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7
第18章 传感器应用的开发/Sample18_6/.classpath
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7
第18章 传感器应用的开发/Sample18_6/.classpath
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<?xml version="1.0" encoding="UTF-8"?>
|
||||
<classpath>
|
||||
<classpathentry kind="src" path="src"/>
|
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<classpathentry kind="src" path="gen"/>
|
||||
<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
|
||||
<classpathentry kind="output" path="bin"/>
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</classpath>
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||||
33
第18章 传感器应用的开发/Sample18_6/.project
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第18章 传感器应用的开发/Sample18_6/.project
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Sample18_6</name>
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<comment></comment>
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||||
<projects>
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</projects>
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||||
<buildSpec>
|
||||
<buildCommand>
|
||||
<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
|
||||
<arguments>
|
||||
</arguments>
|
||||
</buildCommand>
|
||||
<buildCommand>
|
||||
<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
|
||||
<arguments>
|
||||
</arguments>
|
||||
</buildCommand>
|
||||
<buildCommand>
|
||||
<name>org.eclipse.jdt.core.javabuilder</name>
|
||||
<arguments>
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||||
</arguments>
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||||
</buildCommand>
|
||||
<buildCommand>
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||||
<name>com.android.ide.eclipse.adt.ApkBuilder</name>
|
||||
<arguments>
|
||||
</arguments>
|
||||
</buildCommand>
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||||
</buildSpec>
|
||||
<natures>
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||||
<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
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||||
<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>
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@@ -0,0 +1,12 @@
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#Sun Dec 04 13:21:38 CST 2011
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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
|
||||
org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=1.6
|
||||
org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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||||
org.eclipse.jdt.core.compiler.debug.localVariable=generate
|
||||
org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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||||
org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.source=1.5
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18
第18章 传感器应用的开发/Sample18_6/AndroidManifest.xml
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第18章 传感器应用的开发/Sample18_6/AndroidManifest.xml
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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.bn.Sample18_6"
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android:versionCode="1"
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android:versionName="1.0">
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<uses-sdk android:minSdkVersion="8" />
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<application android:icon="@drawable/icon" android:label="@string/app_name">
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<activity android:name=".MyActivity"
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android:label="@string/app_name">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
|
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</activity>
|
||||
|
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</application>
|
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</manifest>
|
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12
第18章 传感器应用的开发/Sample18_6/assets/frag_color_light.sh
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第18章 传感器应用的开发/Sample18_6/assets/frag_color_light.sh
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precision mediump float;
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varying vec4 vaaColor; //接收从顶点着色器过来的参数
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varying vec4 vambient;
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varying vec4 vdiffuse;
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varying vec4 vspecular;
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void main()
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{
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//将颜色给此片元
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vec4 finalColor = vaaColor;
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//给此片元颜色值
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gl_FragColor = finalColor*vambient+finalColor*vspecular+finalColor*vdiffuse;//给此片元颜色值
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}
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第18章 传感器应用的开发/Sample18_6/assets/frag_tex_light.sh
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第18章 传感器应用的开发/Sample18_6/assets/frag_tex_light.sh
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precision mediump float;
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uniform sampler2D sTexture;//纹理内容数据
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varying vec2 vTextureCoord; //接收从顶点着色器过来的参数
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varying vec4 vambient;
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varying vec4 vdiffuse;
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varying vec4 vspecular;
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void main()
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{
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//将计算出的颜色给此片元
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vec4 finalColor=texture2D(sTexture, vTextureCoord);
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//给此片元颜色值
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gl_FragColor = finalColor*vambient+finalColor*vspecular+finalColor*vdiffuse;//给此片元颜色值
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}
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48
第18章 传感器应用的开发/Sample18_6/assets/vertex_color_light.sh
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第18章 传感器应用的开发/Sample18_6/assets/vertex_color_light.sh
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uniform mat4 uMVPMatrix; //总变换矩阵
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uniform mat4 uMMatrix; //变换矩阵
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uniform vec3 uLightLocation; //光源位置
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uniform vec3 uCamera; //摄像机位置
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attribute vec3 aPosition; //顶点位置
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attribute vec3 aNormal; //顶点法向量
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attribute vec4 aColor; //顶点颜色
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varying vec4 vaaColor; //用于传递给片元着色器的变量
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varying vec4 vambient;
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varying vec4 vdiffuse;
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varying vec4 vspecular;
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//定位光光照计算的方法
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void pointLight( //定位光光照计算的方法
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in vec3 normal, //法向量
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inout vec4 ambient, //环境光最终强度
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inout vec4 diffuse, //散射光最终强度
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inout vec4 specular, //镜面光最终强度
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in vec3 lightLocation, //光源位置
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in vec4 lightAmbient, //环境光强度
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in vec4 lightDiffuse, //散射光强度
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in vec4 lightSpecular //镜面光强度
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){
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ambient=lightAmbient; //直接得出环境光的最终强度
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vec3 normalTarget=aPosition+normal; //计算变换后的法向量
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vec3 newNormal=(uMMatrix*vec4(normalTarget,1)).xyz-(uMMatrix*vec4(aPosition,1)).xyz;
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newNormal=normalize(newNormal); //对法向量规格化
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//计算从表面点到摄像机的向量
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vec3 eye= normalize(uCamera-(uMMatrix*vec4(aPosition,1)).xyz);
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//计算从表面点到光源位置的向量vp
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vec3 vp= normalize(lightLocation-(uMMatrix*vec4(aPosition,1)).xyz);
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vp=normalize(vp);//格式化vp
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vec3 halfVector=normalize(vp+eye); //求视线与光线的半向量
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float shininess=50.0; //粗糙度,越小越光滑
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float nDotViewPosition=max(0.0,dot(newNormal,vp)); //求法向量与vp的点积与0的最大值
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diffuse=lightDiffuse*nDotViewPosition; //计算散射光的最终强度
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float nDotViewHalfVector=dot(newNormal,halfVector); //法线与半向量的点积
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float powerFactor=max(0.0,pow(nDotViewHalfVector,shininess)); //镜面反射光强度因子
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specular=lightSpecular*powerFactor; //计算镜面光的最终强度
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||||
}
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||||
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||||
void main()
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||||
{
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||||
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gl_Position = uMVPMatrix * vec4(aPosition,1); //根据总变换矩阵计算此次绘制此顶点位置
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pointLight(normalize(aNormal),vambient,vdiffuse,vspecular,uLightLocation,vec4(0.3,0.3,0.3,1.0),vec4(0.7,0.7,0.7,1.0),vec4(0.3,0.3,0.3,1.0));
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vaaColor = aColor;//将接收的颜色传递给片元着色器
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||||
}
|
||||
48
第18章 传感器应用的开发/Sample18_6/assets/vertex_tex_light.sh
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第18章 传感器应用的开发/Sample18_6/assets/vertex_tex_light.sh
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||||
uniform mat4 uMVPMatrix; //总变换矩阵
|
||||
uniform mat4 uMMatrix; //变换矩阵
|
||||
uniform vec3 uLightLocation; //光源位置
|
||||
uniform vec3 uCamera; //摄像机位置
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||||
attribute vec3 aPosition; //顶点位置
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||||
attribute vec3 aNormal; //顶点法向量
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||||
attribute vec2 aTexCoor; //顶点纹理坐标
|
||||
varying vec2 vTextureCoord; //用于传递给片元着色器的变量
|
||||
varying vec4 vambient;
|
||||
varying vec4 vdiffuse;
|
||||
varying vec4 vspecular;
|
||||
|
||||
//定位光光照计算的方法
|
||||
void pointLight( //定位光光照计算的方法
|
||||
in vec3 normal, //法向量
|
||||
inout vec4 ambient, //环境光最终强度
|
||||
inout vec4 diffuse, //散射光最终强度
|
||||
inout vec4 specular, //镜面光最终强度
|
||||
in vec3 lightLocation, //光源位置
|
||||
in vec4 lightAmbient, //环境光强度
|
||||
in vec4 lightDiffuse, //散射光强度
|
||||
in vec4 lightSpecular //镜面光强度
|
||||
){
|
||||
ambient=lightAmbient; //直接得出环境光的最终强度
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||||
vec3 normalTarget=aPosition+normal; //计算变换后的法向量
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||||
vec3 newNormal=(uMMatrix*vec4(normalTarget,1)).xyz-(uMMatrix*vec4(aPosition,1)).xyz;
|
||||
newNormal=normalize(newNormal); //对法向量规格化
|
||||
//计算从表面点到摄像机的向量
|
||||
vec3 eye= normalize(uCamera-(uMMatrix*vec4(aPosition,1)).xyz);
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||||
//计算从表面点到光源位置的向量vp
|
||||
vec3 vp= normalize(lightLocation-(uMMatrix*vec4(aPosition,1)).xyz);
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||||
vp=normalize(vp);//格式化vp
|
||||
vec3 halfVector=normalize(vp+eye); //求视线与光线的半向量
|
||||
float shininess=50.0; //粗糙度,越小越光滑
|
||||
float nDotViewPosition=max(0.0,dot(newNormal,vp)); //求法向量与vp的点积与0的最大值
|
||||
diffuse=lightDiffuse*nDotViewPosition; //计算散射光的最终强度
|
||||
float nDotViewHalfVector=dot(newNormal,halfVector); //法线与半向量的点积
|
||||
float powerFactor=max(0.0,pow(nDotViewHalfVector,shininess)); //镜面反射光强度因子
|
||||
specular=lightSpecular*powerFactor; //计算镜面光的最终强度
|
||||
}
|
||||
|
||||
void main()
|
||||
{
|
||||
|
||||
gl_Position = uMVPMatrix * vec4(aPosition,1); //根据总变换矩阵计算此次绘制此顶点位置
|
||||
pointLight(normalize(aNormal),vambient,vdiffuse,vspecular,uLightLocation,vec4(0.3,0.3,0.3,1.0),vec4(0.7,0.7,0.7,1.0),vec4(0.3,0.3,0.3,1.0));
|
||||
vTextureCoord = aTexCoor;//将接收的纹理坐标传递给片元着色器
|
||||
}
|
||||
BIN
第18章 传感器应用的开发/Sample18_6/bin/Sample18_6.apk
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第18章 传感器应用的开发/Sample18_6/bin/classes.dex
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第18章 传感器应用的开发/Sample18_6/bin/classes.dex
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/Ball.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/Ball.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/Constant.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/Constant.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/Cube.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/Cube.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/CubeGroup.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/CubeGroup.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/MatrixState.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/MatrixState.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/MyActivity.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/MyActivity.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/MyMathUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/MyMathUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$attr.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$attr.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$drawable.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$drawable.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$layout.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$layout.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$string.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R$string.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/R.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/RotateUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/RotateUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/ShaderUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/ShaderUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/TextureRect.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/TextureRect.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/VectorUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/com/bn/Sample18_6/VectorUtil.class
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第18章 传感器应用的开发/Sample18_6/bin/resources.ap_
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第18章 传感器应用的开发/Sample18_6/bin/resources.ap_
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第18章 传感器应用的开发/Sample18_6/default.properties
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第18章 传感器应用的开发/Sample18_6/default.properties
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|
||||
# This file is automatically generated by Android Tools.
|
||||
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
|
||||
#
|
||||
# This file must be checked in Version Control Systems.
|
||||
#
|
||||
# To customize properties used by the Ant build system use,
|
||||
# "build.properties", and override values to adapt the script to your
|
||||
# project structure.
|
||||
|
||||
# Project target.
|
||||
target=android-8
|
||||
25
第18章 传感器应用的开发/Sample18_6/gen/com/bn/Sample18_6/R.java
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第18章 传感器应用的开发/Sample18_6/gen/com/bn/Sample18_6/R.java
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|
||||
/* AUTO-GENERATED FILE. DO NOT MODIFY.
|
||||
*
|
||||
* This class was automatically generated by the
|
||||
* aapt tool from the resource data it found. It
|
||||
* should not be modified by hand.
|
||||
*/
|
||||
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
public final class R {
|
||||
public static final class attr {
|
||||
}
|
||||
public static final class drawable {
|
||||
public static final int icon=0x7f020000;
|
||||
public static final int tex_floor=0x7f020001;
|
||||
public static final int tex_wall=0x7f020002;
|
||||
}
|
||||
public static final class layout {
|
||||
public static final int main=0x7f030000;
|
||||
}
|
||||
public static final class string {
|
||||
public static final int app_name=0x7f040001;
|
||||
public static final int hello=0x7f040000;
|
||||
}
|
||||
}
|
||||
40
第18章 传感器应用的开发/Sample18_6/proguard.cfg
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第18章 传感器应用的开发/Sample18_6/proguard.cfg
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|
||||
-optimizationpasses 5
|
||||
-dontusemixedcaseclassnames
|
||||
-dontskipnonpubliclibraryclasses
|
||||
-dontpreverify
|
||||
-verbose
|
||||
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
|
||||
|
||||
-keep public class * extends android.app.Activity
|
||||
-keep public class * extends android.app.Application
|
||||
-keep public class * extends android.app.Service
|
||||
-keep public class * extends android.content.BroadcastReceiver
|
||||
-keep public class * extends android.content.ContentProvider
|
||||
-keep public class * extends android.app.backup.BackupAgentHelper
|
||||
-keep public class * extends android.preference.Preference
|
||||
-keep public class com.android.vending.licensing.ILicensingService
|
||||
|
||||
-keepclasseswithmembernames class * {
|
||||
native <methods>;
|
||||
}
|
||||
|
||||
-keepclasseswithmembers class * {
|
||||
public <init>(android.content.Context, android.util.AttributeSet);
|
||||
}
|
||||
|
||||
-keepclasseswithmembers class * {
|
||||
public <init>(android.content.Context, android.util.AttributeSet, int);
|
||||
}
|
||||
|
||||
-keepclassmembers class * extends android.app.Activity {
|
||||
public void *(android.view.View);
|
||||
}
|
||||
|
||||
-keepclassmembers enum * {
|
||||
public static **[] values();
|
||||
public static ** valueOf(java.lang.String);
|
||||
}
|
||||
|
||||
-keep class * implements android.os.Parcelable {
|
||||
public static final android.os.Parcelable$Creator *;
|
||||
}
|
||||
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-hdpi/icon.png
Normal file
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-hdpi/icon.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 4.0 KiB |
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-ldpi/icon.png
Normal file
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-ldpi/icon.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 1.7 KiB |
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-mdpi/icon.png
Normal file
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-mdpi/icon.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 2.5 KiB |
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/Thumbs.db
Normal file
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/Thumbs.db
Normal file
Binary file not shown.
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/icon.png
Normal file
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/icon.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 4.0 KiB |
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/tex_floor.png
Normal file
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/tex_floor.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 22 KiB |
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/tex_wall.png
Normal file
BIN
第18章 传感器应用的开发/Sample18_6/res/drawable-nodpi/tex_wall.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 3.9 KiB |
12
第18章 传感器应用的开发/Sample18_6/res/layout/main.xml
Normal file
12
第18章 传感器应用的开发/Sample18_6/res/layout/main.xml
Normal file
@@ -0,0 +1,12 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
|
||||
android:orientation="vertical"
|
||||
android:layout_width="fill_parent"
|
||||
android:layout_height="fill_parent"
|
||||
>
|
||||
<TextView
|
||||
android:layout_width="fill_parent"
|
||||
android:layout_height="wrap_content"
|
||||
android:text="@string/hello"
|
||||
/>
|
||||
</LinearLayout>
|
||||
5
第18章 传感器应用的开发/Sample18_6/res/values/strings.xml
Normal file
5
第18章 传感器应用的开发/Sample18_6/res/values/strings.xml
Normal file
@@ -0,0 +1,5 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<resources>
|
||||
<string name="hello">Hello World, MyActivity!</string>
|
||||
<string name="app_name">Sample18_6</string>
|
||||
</resources>
|
||||
288
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/Ball.java
Normal file
288
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/Ball.java
Normal file
@@ -0,0 +1,288 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
import static com.bn.Sample18_6.ShaderUtil.createProgram;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.ByteOrder;
|
||||
import java.nio.FloatBuffer;
|
||||
import java.util.ArrayList;
|
||||
|
||||
import android.opengl.GLES20;
|
||||
|
||||
/*
|
||||
* 正二十面体
|
||||
* 基于三个互相垂直的黄金长方形
|
||||
*/
|
||||
public class Ball
|
||||
{
|
||||
int mProgram;//自定义渲染管线着色器程序id
|
||||
int muMVPMatrixHandle;//总变换矩阵引用
|
||||
int maPositionHandle; //顶点位置属性引用
|
||||
int maColorHandle; //顶点颜色属性引用
|
||||
int muMMatrixHandle;
|
||||
|
||||
int maCameraHandle; //摄像机位置属性引用
|
||||
int maNormalHandle; //顶点法向量属性引用
|
||||
int maLightLocationHandle;//光源位置属性引用
|
||||
|
||||
|
||||
String mVertexShader;//顶点着色器
|
||||
String mFragmentShader;//片元着色器
|
||||
|
||||
FloatBuffer mVertexBuffer;//顶点坐标数据缓冲
|
||||
FloatBuffer mColorBuffer; //顶点颜色数据缓冲
|
||||
FloatBuffer mNormalBuffer;//顶点法向量数据缓冲
|
||||
int vCount=0;
|
||||
float xAngle=0;//绕x轴旋转的角度
|
||||
float yAngle=0;//绕y轴旋转的角度
|
||||
float zAngle=0;//绕z轴旋转的角度
|
||||
|
||||
float bHalf=0;//黄金长方形的宽
|
||||
float r=0;//球的半径
|
||||
|
||||
public Ball(MySurfaceView mv,float scale,float aHalf,int n)
|
||||
{
|
||||
//调用初始化顶点数据的initVertexData方法
|
||||
initVertexData(scale,aHalf,n);
|
||||
//调用初始化着色器的intShader方法
|
||||
initShader(mv);
|
||||
}
|
||||
|
||||
//自定义的初始化顶点数据的方法
|
||||
public void initVertexData(float scale, float aHalf, int n) //大小,黄金长方形的长的一半,分段数
|
||||
{
|
||||
aHalf*=scale;
|
||||
//初始化成员变量
|
||||
bHalf=aHalf*0.618034f;
|
||||
r=(float) Math.sqrt(aHalf*aHalf+bHalf*bHalf);
|
||||
vCount=3*20*n*n;//顶点个数,共有20个三角形,每个三角形都有三个顶点
|
||||
//正20面体坐标数据初始化
|
||||
ArrayList<Float> alVertix20=new ArrayList<Float>();//正20面体的顶点列表(未卷绕)
|
||||
ArrayList<Integer> alFaceIndex20=new ArrayList<Integer>();//正20面体组织成面的顶点的索引值列表(按逆时针卷绕)
|
||||
//正20面体顶点
|
||||
alVertix20.add(0f); alVertix20.add(aHalf); alVertix20.add(-bHalf);//顶正棱锥顶点
|
||||
|
||||
alVertix20.add(0f); alVertix20.add(aHalf); alVertix20.add(bHalf);//棱柱上的点
|
||||
alVertix20.add(aHalf); alVertix20.add(bHalf); alVertix20.add(0f);
|
||||
alVertix20.add(bHalf); alVertix20.add(0f); alVertix20.add(-aHalf);
|
||||
alVertix20.add(-bHalf); alVertix20.add(0f); alVertix20.add(-aHalf);
|
||||
alVertix20.add(-aHalf); alVertix20.add(bHalf); alVertix20.add(0f);
|
||||
|
||||
alVertix20.add(-bHalf); alVertix20.add(0f); alVertix20.add(aHalf);
|
||||
alVertix20.add(bHalf); alVertix20.add(0f); alVertix20.add(aHalf);
|
||||
alVertix20.add(aHalf); alVertix20.add(-bHalf); alVertix20.add(0f);
|
||||
alVertix20.add(0f); alVertix20.add(-aHalf); alVertix20.add(-bHalf);
|
||||
alVertix20.add(-aHalf); alVertix20.add(-bHalf); alVertix20.add(0f);
|
||||
|
||||
alVertix20.add(0f); alVertix20.add(-aHalf); alVertix20.add(bHalf);//底棱锥顶点
|
||||
//正20面体索引
|
||||
alFaceIndex20.add(0); alFaceIndex20.add(1); alFaceIndex20.add(2);
|
||||
alFaceIndex20.add(0); alFaceIndex20.add(2); alFaceIndex20.add(3);
|
||||
alFaceIndex20.add(0); alFaceIndex20.add(3); alFaceIndex20.add(4);
|
||||
alFaceIndex20.add(0); alFaceIndex20.add(4); alFaceIndex20.add(5);
|
||||
alFaceIndex20.add(0); alFaceIndex20.add(5); alFaceIndex20.add(1);
|
||||
|
||||
alFaceIndex20.add(1); alFaceIndex20.add(6); alFaceIndex20.add(7);
|
||||
alFaceIndex20.add(1); alFaceIndex20.add(7); alFaceIndex20.add(2);
|
||||
alFaceIndex20.add(2); alFaceIndex20.add(7); alFaceIndex20.add(8);
|
||||
alFaceIndex20.add(2); alFaceIndex20.add(8); alFaceIndex20.add(3);
|
||||
alFaceIndex20.add(3); alFaceIndex20.add(8); alFaceIndex20.add(9);
|
||||
alFaceIndex20.add(3); alFaceIndex20.add(9); alFaceIndex20.add(4);
|
||||
alFaceIndex20.add(4); alFaceIndex20.add(9); alFaceIndex20.add(10);
|
||||
alFaceIndex20.add(4); alFaceIndex20.add(10); alFaceIndex20.add(5);
|
||||
alFaceIndex20.add(5); alFaceIndex20.add(10); alFaceIndex20.add(6);
|
||||
alFaceIndex20.add(5); alFaceIndex20.add(6); alFaceIndex20.add(1);
|
||||
|
||||
alFaceIndex20.add(6); alFaceIndex20.add(11); alFaceIndex20.add(7);
|
||||
alFaceIndex20.add(7); alFaceIndex20.add(11); alFaceIndex20.add(8);
|
||||
alFaceIndex20.add(8); alFaceIndex20.add(11); alFaceIndex20.add(9);
|
||||
alFaceIndex20.add(9); alFaceIndex20.add(11); alFaceIndex20.add(10);
|
||||
alFaceIndex20.add(10); alFaceIndex20.add(11); alFaceIndex20.add(6);
|
||||
//计算卷绕顶点
|
||||
float[] vertices20=VectorUtil.calVertices(alVertix20, alFaceIndex20);//只计算顶点
|
||||
|
||||
//坐标数据初始化
|
||||
ArrayList<Float> alVertix=new ArrayList<Float>();//原顶点列表(未卷绕)
|
||||
ArrayList<Integer> alFaceIndex=new ArrayList<Integer>();//组织成面的顶点的索引值列表(按逆时针卷绕)
|
||||
int vnCount=0;//前i-1行前所有顶点数的和
|
||||
for(int k=0;k<vertices20.length;k+=9)//对正20面体每个大三角形循环
|
||||
{
|
||||
float [] v1=new float[]{vertices20[k+0], vertices20[k+1], vertices20[k+2]};
|
||||
float [] v2=new float[]{vertices20[k+3], vertices20[k+4], vertices20[k+5]};
|
||||
float [] v3=new float[]{vertices20[k+6], vertices20[k+7], vertices20[k+8]};
|
||||
//顶点
|
||||
for(int i=0;i<=n;i++)
|
||||
{
|
||||
float[] viStart=VectorUtil.devideBall(r, v1, v2, n, i);
|
||||
float[] viEnd=VectorUtil.devideBall(r, v1, v3, n, i);
|
||||
for(int j=0;j<=i;j++)
|
||||
{
|
||||
float[] vi=VectorUtil.devideBall(r, viStart, viEnd, i, j);
|
||||
alVertix.add(vi[0]); alVertix.add(vi[1]); alVertix.add(vi[2]);
|
||||
}
|
||||
}
|
||||
//索引
|
||||
for(int i=0;i<n;i++)
|
||||
{
|
||||
if(i==0){//若是第0行,直接加入卷绕后顶点索引012
|
||||
alFaceIndex.add(vnCount+0); alFaceIndex.add(vnCount+1);alFaceIndex.add(vnCount+2);
|
||||
vnCount+=1;
|
||||
if(i==n-1){//如果是每个大三角形的最后一次循环,将下一列的顶点个数也加上
|
||||
vnCount+=2;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
int iStart=vnCount;//第i行开始的索引
|
||||
int viCount=i+1;//第i行顶点数
|
||||
int iEnd=iStart+viCount-1;//第i行结束索引
|
||||
|
||||
int iStartNext=iStart+viCount;//第i+1行开始的索引
|
||||
int viCountNext=viCount+1;//第i+1行顶点数
|
||||
int iEndNext=iStartNext+viCountNext-1;//第i+1行结束的索引
|
||||
//前面的四边形
|
||||
for(int j=0;j<viCount-1;j++)
|
||||
{
|
||||
int index0=iStart+j;//四边形的四个顶点索引
|
||||
int index1=index0+1;
|
||||
int index2=iStartNext+j;
|
||||
int index3=index2+1;
|
||||
alFaceIndex.add(index0); alFaceIndex.add(index2);alFaceIndex.add(index3);//加入前面的四边形
|
||||
alFaceIndex.add(index0); alFaceIndex.add(index3);alFaceIndex.add(index1);
|
||||
}// j
|
||||
alFaceIndex.add(iEnd); alFaceIndex.add(iEndNext-1);alFaceIndex.add(iEndNext); //最后一个三角形
|
||||
vnCount+=viCount;//第i行前所有顶点数的和
|
||||
if(i==n-1){//如果是每个大三角形的最后一次循环,将下一列的顶点个数也加上
|
||||
vnCount+=viCountNext;
|
||||
}
|
||||
}// i
|
||||
}
|
||||
|
||||
//计算卷绕顶点
|
||||
float[] vertices=VectorUtil.calVertices(alVertix, alFaceIndex);//只计算顶点
|
||||
float[] normals=vertices;//顶点就是法向量
|
||||
|
||||
//顶点坐标数据初始化
|
||||
ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length*4);//创建顶点坐标数据缓冲
|
||||
vbb.order(ByteOrder.nativeOrder());//设置字节顺序为本地操作系统顺序
|
||||
mVertexBuffer = vbb.asFloatBuffer();//转换为float型缓冲
|
||||
mVertexBuffer.put(vertices);//向缓冲区中放入顶点坐标数据
|
||||
mVertexBuffer.position(0);//设置缓冲区起始位置
|
||||
//法向量数据初始化
|
||||
ByteBuffer nbb = ByteBuffer.allocateDirect(normals.length*4);//创建顶点法向量数据缓冲
|
||||
nbb.order(ByteOrder.nativeOrder());//设置字节顺序为本地操作系统顺序
|
||||
mNormalBuffer = nbb.asFloatBuffer();//转换为float型缓冲
|
||||
mNormalBuffer.put(normals);//向缓冲区中放入顶点法向量数据
|
||||
mNormalBuffer.position(0);//设置缓冲区起始位置
|
||||
|
||||
float[] colors=new float[vCount*4];//顶点颜色数组
|
||||
int Count=0;
|
||||
for(int i=0;i<vCount;i++)
|
||||
{
|
||||
colors[Count++]=1; //r
|
||||
colors[Count++]=1; //g
|
||||
colors[Count++]=1; //b
|
||||
colors[Count++]=1; //a
|
||||
|
||||
}
|
||||
//创建顶点着色数据缓冲
|
||||
ByteBuffer cbb = ByteBuffer.allocateDirect(colors.length*4);
|
||||
cbb.order(ByteOrder.nativeOrder());//设置字节顺序为本地操作系统顺序
|
||||
mColorBuffer = cbb.asFloatBuffer();//转换为Float型缓冲
|
||||
mColorBuffer.put(colors);//向缓冲区中放入顶点着色数据
|
||||
mColorBuffer.position(0);//设置缓冲区起始位置
|
||||
}
|
||||
|
||||
//初始化着色器
|
||||
public void initShader(MySurfaceView mv)
|
||||
{
|
||||
//加载顶点着色器的脚本内容
|
||||
mVertexShader=ShaderUtil.loadFromAssetsFile("vertex_color_light.sh", mv.getResources());
|
||||
//加载片元着色器的脚本内容
|
||||
mFragmentShader=ShaderUtil.loadFromAssetsFile("frag_color_light.sh", mv.getResources());
|
||||
//基于顶点着色器与片元着色器创建程序
|
||||
mProgram = createProgram(mVertexShader, mFragmentShader);
|
||||
//获取程序中顶点位置属性引用id
|
||||
maPositionHandle = GLES20.glGetAttribLocation(mProgram, "aPosition");
|
||||
//获取程序中顶点颜色属性引用id
|
||||
maColorHandle= GLES20.glGetAttribLocation(mProgram, "aColor");
|
||||
//获取程序中总变换矩阵引用id
|
||||
muMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
|
||||
|
||||
|
||||
//获取程序中顶点法向量属性引用id
|
||||
maNormalHandle= GLES20.glGetAttribLocation(mProgram, "aNormal");
|
||||
//获取程序中摄像机位置引用id
|
||||
maCameraHandle=GLES20.glGetUniformLocation(mProgram, "uCamera");
|
||||
//获取程序中光源位置引用id
|
||||
maLightLocationHandle=GLES20.glGetUniformLocation(mProgram, "uLightLocation");
|
||||
//获取位置、旋转变换矩阵引用id
|
||||
muMMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMMatrix");
|
||||
|
||||
|
||||
}
|
||||
|
||||
public void drawSelf()
|
||||
{
|
||||
|
||||
MatrixState.rotate(xAngle, 1, 0, 0);
|
||||
MatrixState.rotate(yAngle, 0, 1, 0);
|
||||
MatrixState.rotate(zAngle, 0, 0, 1);
|
||||
|
||||
//制定使用某套shader程序
|
||||
GLES20.glUseProgram(mProgram);
|
||||
|
||||
//将最终变换矩阵传入shader程序
|
||||
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, MatrixState.getFinalMatrix(), 0);
|
||||
|
||||
//将位置、旋转变换矩阵传入shader程序
|
||||
GLES20.glUniformMatrix4fv(muMMatrixHandle, 1, false, MatrixState.getMMatrix(), 0);
|
||||
//将摄像机位置传入shader程序
|
||||
GLES20.glUniform3fv(maCameraHandle, 1, MatrixState.cameraFB);
|
||||
//将光源位置传入shader程序
|
||||
GLES20.glUniform3fv(maLightLocationHandle, 1, MatrixState.lightPositionFB);
|
||||
|
||||
|
||||
//传送顶点位置数据
|
||||
GLES20.glVertexAttribPointer
|
||||
(
|
||||
maPositionHandle,
|
||||
3,
|
||||
GLES20.GL_FLOAT,
|
||||
false,
|
||||
3*4,
|
||||
mVertexBuffer
|
||||
);
|
||||
//传送顶点颜色数据
|
||||
GLES20.glVertexAttribPointer
|
||||
(
|
||||
maColorHandle,
|
||||
4,
|
||||
GLES20.GL_FLOAT,
|
||||
false,
|
||||
4*4,
|
||||
mColorBuffer
|
||||
);
|
||||
//传送顶点法向量数据
|
||||
GLES20.glVertexAttribPointer
|
||||
(
|
||||
maNormalHandle,
|
||||
4,
|
||||
GLES20.GL_FLOAT,
|
||||
false,
|
||||
3*4,
|
||||
mNormalBuffer
|
||||
);
|
||||
|
||||
//启用顶点位置数据
|
||||
GLES20.glEnableVertexAttribArray(maPositionHandle);
|
||||
//启用顶点颜色数据
|
||||
GLES20.glEnableVertexAttribArray(maColorHandle);
|
||||
//启用顶点法向量数据
|
||||
GLES20.glEnableVertexAttribArray(maNormalHandle);
|
||||
|
||||
//绘制线条的粗细
|
||||
GLES20.glLineWidth(2);
|
||||
//绘制
|
||||
GLES20.glDrawArrays(GLES20.GL_LINE_STRIP, 0, vCount);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,100 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
import static com.bn.Sample18_6.Constant.*;
|
||||
import android.opengl.Matrix;
|
||||
|
||||
//用于控制的球
|
||||
public class BallForControl {
|
||||
MySurfaceView mv;
|
||||
Ball ball;//用于绘制的桌球
|
||||
|
||||
float rotateX; //球的旋转轴
|
||||
float rotateY;
|
||||
float rotateZ;
|
||||
|
||||
float tempX; //球位置的临时变量
|
||||
float tempZ;
|
||||
|
||||
float tempSPANX; //球移动距离的临时变量
|
||||
float tempSPANZ;
|
||||
|
||||
float tempLength; //球前进的距离临时变量
|
||||
|
||||
float tempAngle; //球旋转的角度
|
||||
|
||||
float[] selfRotateMatrix;//自带旋转矩阵
|
||||
|
||||
public BallForControl(MySurfaceView mv,float scale,float aHalf,int n)
|
||||
{
|
||||
this.mv=mv;
|
||||
ball=new Ball(mv,scale,aHalf,n);
|
||||
//初始化自带旋转矩阵
|
||||
selfRotateMatrix=new float[16];
|
||||
//初始时旋转一定的度数
|
||||
Matrix.setRotateM(selfRotateMatrix, 0, 10, 0, 1, 0);
|
||||
}
|
||||
|
||||
public void drawSelf()
|
||||
{
|
||||
MatrixState.pushMatrix();
|
||||
//移动到指定位置
|
||||
MatrixState.translate(Constant.XOFFSET, 1.2f, Constant.ZOFFSET);
|
||||
//加上自带旋转矩阵
|
||||
MatrixState.matrix(selfRotateMatrix);
|
||||
//绘制球
|
||||
ball.drawSelf();
|
||||
MatrixState.popMatrix();
|
||||
}
|
||||
|
||||
//球前进的方法
|
||||
public void go(){
|
||||
tempSPANX=Constant.SPANX; //球移动距离的临时变量赋值
|
||||
tempSPANZ=Constant.SPANZ;
|
||||
|
||||
tempX=Constant.XOFFSET+tempSPANX; //根据传感器,变化当前球的位置
|
||||
tempZ=Constant.ZOFFSET+tempSPANZ;
|
||||
|
||||
|
||||
//如果与上下两条边发生碰撞
|
||||
if( (tempZ<-ZBOUNDARY)||(tempZ>ZBOUNDARY))
|
||||
{
|
||||
tempSPANZ=0;
|
||||
}
|
||||
//如果与左右两条边发生碰撞
|
||||
if((tempX<-XBOUNDARY)|| (tempX>XBOUNDARY))
|
||||
{
|
||||
tempSPANX=0;
|
||||
}
|
||||
|
||||
|
||||
//球当前的位置发生变化
|
||||
Constant.XOFFSET+=tempSPANX;
|
||||
Constant.ZOFFSET+=tempSPANZ;
|
||||
|
||||
|
||||
//*****************旋转 begin************************
|
||||
|
||||
//前进的方向向量为Constant.SPANX Constant.SPANZ,
|
||||
//那么旋转轴为
|
||||
rotateX=tempSPANZ;
|
||||
rotateY=0;
|
||||
rotateZ=-tempSPANX;
|
||||
//前进的距离
|
||||
tempLength=(float) Math.sqrt(tempSPANX*tempSPANX+tempSPANZ*tempSPANZ);
|
||||
//计算前进的角度值
|
||||
tempAngle=(float) Math.toDegrees(tempLength/Constant.BALLR);
|
||||
|
||||
//改变球的旋转矩阵
|
||||
//旋转时要求角度不为0且轴不能全为0
|
||||
if(Math.abs(tempAngle)!=0&&(Math.abs(rotateZ)!=0||Math.abs(rotateX)!=0))
|
||||
{
|
||||
float[] newMatrix=new float[16];
|
||||
Matrix.setRotateM(newMatrix, 0, tempAngle, rotateX, rotateY, rotateZ);
|
||||
float[] resultMatrix=new float[16];
|
||||
Matrix.multiplyMM(resultMatrix, 0, newMatrix, 0, selfRotateMatrix,0);
|
||||
selfRotateMatrix=resultMatrix;
|
||||
}
|
||||
|
||||
//************************旋转 end************************
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,33 @@
|
||||
package com.bn.Sample18_6;
|
||||
/*
|
||||
* 控制球运动的线程
|
||||
*/
|
||||
public class BallGoThread extends Thread {
|
||||
BallForControl ballForControl;//声明AllBalls的引用
|
||||
int timeSpan=12;
|
||||
private boolean flag=false;//循环标志位
|
||||
|
||||
public BallGoThread(BallForControl ballForControl)//构造器
|
||||
{
|
||||
this.ballForControl=ballForControl;//成员变量赋值
|
||||
}
|
||||
|
||||
@Override
|
||||
public void run()//重写run方法
|
||||
{
|
||||
while(flag)//while循环
|
||||
{
|
||||
ballForControl.go();//调用使所有球运动的方法
|
||||
|
||||
try{
|
||||
Thread.sleep(timeSpan);//一段时间后再运动
|
||||
}
|
||||
catch(Exception e){
|
||||
e.printStackTrace();//打印异常
|
||||
}
|
||||
}
|
||||
}
|
||||
public void setFlag(boolean flag) {
|
||||
this.flag = flag;
|
||||
}
|
||||
}
|
||||
32
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/Constant.java
Normal file
32
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/Constant.java
Normal file
@@ -0,0 +1,32 @@
|
||||
package com.bn.Sample18_6;
|
||||
//常量类
|
||||
public class Constant
|
||||
{
|
||||
public static final float SCALE=1;
|
||||
|
||||
//黄金长方形长边的一半
|
||||
public static final float AHALF=1;
|
||||
|
||||
//给定木块凹槽的数据
|
||||
public static final float CUBE_LENGTH=18; //矩形平面的长度
|
||||
public static final float CUBE_HEIGHT=1; //墙的高度
|
||||
public static final float CUBE_WIDTH=12; //矩形平面的宽度
|
||||
public static final float WALL_WIDTH=1f; //墙的厚度
|
||||
//----------------------------数据给定结束-----------------------------------------
|
||||
|
||||
public static float D3_CUBE_LENGTH=CUBE_LENGTH*SCALE; //三维空间中底面矩形的真正长度
|
||||
public static float D3_CUBE_WIDTH=CUBE_WIDTH*SCALE; //三维空间中底面矩形的真正宽度
|
||||
public static float D3_WALL_WIDTH=WALL_WIDTH*SCALE; //三维空间中墙的真正厚度
|
||||
public static float BALLR=(float) Math.sqrt(SCALE*AHALF*SCALE*AHALF+SCALE*AHALF*0.618034f*SCALE*AHALF*0.618034f); //球的半径
|
||||
|
||||
//底面凹槽的边界,均为正值
|
||||
public static float XBOUNDARY=D3_CUBE_LENGTH/2-D3_WALL_WIDTH-BALLR; //x方向上的边界
|
||||
public static float ZBOUNDARY=D3_CUBE_WIDTH/2-D3_WALL_WIDTH-BALLR; //z方向上的边界
|
||||
|
||||
|
||||
public static float XOFFSET=0; //球位置坐标
|
||||
public static float ZOFFSET=0;
|
||||
|
||||
public static float SPANX=0; //球的步进
|
||||
public static float SPANZ=0;
|
||||
}
|
||||
72
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/Cube.java
Normal file
72
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/Cube.java
Normal file
@@ -0,0 +1,72 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
public class Cube
|
||||
{
|
||||
MySurfaceView mv;
|
||||
TextureRect[] rect=new TextureRect[6];
|
||||
float xAngle=0;//绕x轴旋转的角度
|
||||
float yAngle=0;//绕y轴旋转的角度
|
||||
float zAngle=0;//绕z轴旋转的角度
|
||||
float a; //立方体的长
|
||||
float b; //立方体的高
|
||||
float c; //立方体的宽(厚度)
|
||||
float size;//尺寸
|
||||
public Cube(MySurfaceView mv,float scale,float[] abc)
|
||||
{
|
||||
a=abc[0];
|
||||
b=abc[1];
|
||||
c=abc[2];
|
||||
rect[0]=new TextureRect(mv,scale,a,b);
|
||||
rect[1]=new TextureRect(mv,scale,a,b);
|
||||
rect[2]=new TextureRect(mv,scale,c,b);
|
||||
rect[3]=new TextureRect(mv,scale,c,b);
|
||||
rect[4]=new TextureRect(mv,scale,a,c);
|
||||
rect[5]=new TextureRect(mv,scale,a,c);
|
||||
// 初始化完成后再改变各量的值
|
||||
size=scale;
|
||||
a*=size;
|
||||
b*=size;
|
||||
c*=size;
|
||||
}
|
||||
public void drawSelf(int ballTexId)
|
||||
{
|
||||
MatrixState.rotate(xAngle, 1, 0, 0);
|
||||
MatrixState.rotate(yAngle, 0, 1, 0);
|
||||
MatrixState.rotate(zAngle, 0, 0, 1);
|
||||
//前面
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(0, 0, c/2);
|
||||
rect[0].drawSelf(ballTexId);
|
||||
MatrixState.popMatrix();
|
||||
//后面
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(0, 0, -c/2);
|
||||
MatrixState.rotate(180.0f, 0, 1, 0);
|
||||
rect[1].drawSelf(ballTexId);
|
||||
MatrixState.popMatrix();
|
||||
//右面
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(a/2, 0, 0);
|
||||
MatrixState.rotate(90.0f, 0, 1, 0);
|
||||
rect[2].drawSelf(ballTexId);
|
||||
MatrixState.popMatrix();
|
||||
//左面
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(-a/2, 0, 0);
|
||||
MatrixState.rotate(-90.0f, 0, 1, 0);
|
||||
rect[3].drawSelf(ballTexId);
|
||||
MatrixState.popMatrix();
|
||||
//下面
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(0, -b/2, 0);
|
||||
MatrixState.rotate(90.0f, 1, 0, 0);
|
||||
rect[4].drawSelf(ballTexId);
|
||||
MatrixState.popMatrix();
|
||||
//上面
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(0, b/2, 0);
|
||||
MatrixState.rotate(-90.0f, 1, 0, 0);
|
||||
rect[5].drawSelf(ballTexId);
|
||||
MatrixState.popMatrix();
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,67 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
public class CubeGroup {
|
||||
|
||||
MySurfaceView mv;
|
||||
|
||||
TextureRect textureRect;//底部立方体
|
||||
Cube sideCube1;//左右侧立方体
|
||||
Cube sideCube2;//前后侧立方体
|
||||
float size;//尺寸
|
||||
float a;
|
||||
float b;
|
||||
float c;
|
||||
float width;
|
||||
public CubeGroup(MySurfaceView mv,
|
||||
float scale, //比例
|
||||
float a, //矩形平面长度
|
||||
float b, //墙的高度
|
||||
float c , //矩形平面宽度
|
||||
float width //墙的厚度
|
||||
){
|
||||
//创建各个组成部分的对象
|
||||
textureRect = new TextureRect(mv,scale,a,c);//立方体
|
||||
sideCube1 = new Cube(mv, scale, new float[]{c, b, width});//立方体
|
||||
sideCube2 = new Cube(mv, scale, new float[]{a-2*width, b, width});//立方体
|
||||
// 初始化完成后再改变各量的值
|
||||
size = scale;
|
||||
a *= size;
|
||||
b *= size;
|
||||
c *= size;
|
||||
width *= size;
|
||||
//初始化成员变量的值
|
||||
this.a = a;
|
||||
this.b = b;
|
||||
this.c = c;
|
||||
this.width = width;
|
||||
}
|
||||
public void drawSelf(int floorTexId,int wallTexId){
|
||||
//底部
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.rotate(-90, 1, 0, 0);
|
||||
textureRect.drawSelf(floorTexId);
|
||||
MatrixState.popMatrix();
|
||||
//左右侧
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(-(a - width)/2,b/2, 0);
|
||||
MatrixState.rotate(90, 0, 1, 0);
|
||||
sideCube1.drawSelf(wallTexId);
|
||||
MatrixState.popMatrix();
|
||||
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate((a - width)/2,b/2, 0);
|
||||
MatrixState.rotate(90, 0, 1, 0);
|
||||
sideCube1.drawSelf(wallTexId);
|
||||
MatrixState.popMatrix();
|
||||
//前后侧
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(0,b/2, (c - width)/2);
|
||||
sideCube2.drawSelf(wallTexId);
|
||||
MatrixState.popMatrix();
|
||||
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(0,b/2, -(c - width)/2);
|
||||
sideCube2.drawSelf(wallTexId);
|
||||
MatrixState.popMatrix();
|
||||
}
|
||||
}
|
||||
182
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/MatrixState.java
Normal file
182
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/MatrixState.java
Normal file
@@ -0,0 +1,182 @@
|
||||
package com.bn.Sample18_6;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.ByteOrder;
|
||||
import java.nio.FloatBuffer;
|
||||
import android.opengl.Matrix;
|
||||
|
||||
//存储系统矩阵状态的类
|
||||
public class MatrixState
|
||||
{
|
||||
private static float[] mProjMatrix = new float[16];//4x4矩阵 投影用
|
||||
private static float[] mVMatrix = new float[16];//摄像机位置朝向9参数矩阵
|
||||
private static float[] currMatrix;//当前变换矩阵
|
||||
public static float[] lightLocation=new float[]{0,0,0};//定位光光源位置
|
||||
public static FloatBuffer cameraFB;
|
||||
public static FloatBuffer lightPositionFB;
|
||||
|
||||
//保护变换矩阵的栈
|
||||
static float[][] mStack=new float[10][16];
|
||||
static int stackTop=-1;
|
||||
|
||||
public static void setInitStack()//获取不变换初始矩阵
|
||||
{
|
||||
currMatrix=new float[16];
|
||||
Matrix.setRotateM(currMatrix, 0, 0, 1, 0, 0);
|
||||
}
|
||||
|
||||
public static void pushMatrix()//保护变换矩阵
|
||||
{
|
||||
stackTop++;
|
||||
for(int i=0;i<16;i++)
|
||||
{
|
||||
mStack[stackTop][i]=currMatrix[i];
|
||||
}
|
||||
}
|
||||
|
||||
public static void popMatrix()//恢复变换矩阵
|
||||
{
|
||||
for(int i=0;i<16;i++)
|
||||
{
|
||||
currMatrix[i]=mStack[stackTop][i];
|
||||
}
|
||||
stackTop--;
|
||||
}
|
||||
|
||||
public static void translate(float x,float y,float z)//设置沿xyz轴移动
|
||||
{
|
||||
Matrix.translateM(currMatrix, 0, x, y, z);
|
||||
}
|
||||
|
||||
public static void rotate(float angle,float x,float y,float z)//设置绕xyz轴移动
|
||||
{
|
||||
Matrix.rotateM(currMatrix,0,angle,x,y,z);
|
||||
}
|
||||
|
||||
public static void scale(float x,float y,float z)
|
||||
{
|
||||
Matrix.scaleM(currMatrix,0, x, y, z);
|
||||
}
|
||||
|
||||
//插入自带矩阵
|
||||
public static void matrix(float[] self)
|
||||
{
|
||||
float[] result=new float[16];
|
||||
Matrix.multiplyMM(result,0,currMatrix,0,self,0);
|
||||
currMatrix=result;
|
||||
}
|
||||
|
||||
|
||||
//设置摄像机
|
||||
static ByteBuffer llbb= ByteBuffer.allocateDirect(3*4);
|
||||
static float[] cameraLocation=new float[3];//摄像机位置
|
||||
public static void setCamera
|
||||
(
|
||||
float cx, //摄像机位置x
|
||||
float cy, //摄像机位置y
|
||||
float cz, //摄像机位置z
|
||||
float tx, //摄像机目标点x
|
||||
float ty, //摄像机目标点y
|
||||
float tz, //摄像机目标点z
|
||||
float upx, //摄像机UP向量X分量
|
||||
float upy, //摄像机UP向量Y分量
|
||||
float upz //摄像机UP向量Z分量
|
||||
)
|
||||
{
|
||||
Matrix.setLookAtM
|
||||
(
|
||||
mVMatrix,
|
||||
0,
|
||||
cx,
|
||||
cy,
|
||||
cz,
|
||||
tx,
|
||||
ty,
|
||||
tz,
|
||||
upx,
|
||||
upy,
|
||||
upz
|
||||
);
|
||||
|
||||
cameraLocation[0]=cx;
|
||||
cameraLocation[1]=cy;
|
||||
cameraLocation[2]=cz;
|
||||
|
||||
llbb.clear();
|
||||
llbb.order(ByteOrder.nativeOrder());//设置字节顺序
|
||||
cameraFB=llbb.asFloatBuffer();
|
||||
cameraFB.put(cameraLocation);
|
||||
cameraFB.position(0);
|
||||
}
|
||||
|
||||
//设置透视投影参数
|
||||
public static void setProjectFrustum
|
||||
(
|
||||
float left, //near面的left
|
||||
float right, //near面的right
|
||||
float bottom, //near面的bottom
|
||||
float top, //near面的top
|
||||
float near, //near面距离
|
||||
float far //far面距离
|
||||
)
|
||||
{
|
||||
Matrix.frustumM(mProjMatrix, 0, left, right, bottom, top, near, far);
|
||||
}
|
||||
|
||||
//设置正交投影参数
|
||||
public static void setProjectOrtho
|
||||
(
|
||||
float left, //near面的left
|
||||
float right, //near面的right
|
||||
float bottom, //near面的bottom
|
||||
float top, //near面的top
|
||||
float near, //near面距离
|
||||
float far //far面距离
|
||||
)
|
||||
{
|
||||
Matrix.orthoM(mProjMatrix, 0, left, right, bottom, top, near, far);
|
||||
}
|
||||
//获取具体物体的总变换矩阵
|
||||
static float[] mMVPMatrix=new float[16];
|
||||
public static float[] getFinalMatrix()
|
||||
{
|
||||
Matrix.multiplyMM(mMVPMatrix, 0, mVMatrix, 0, currMatrix, 0);
|
||||
Matrix.multiplyMM(mMVPMatrix, 0, mProjMatrix, 0, mMVPMatrix, 0);
|
||||
return mMVPMatrix;
|
||||
}
|
||||
|
||||
//获取具体物体的变换矩阵
|
||||
public static float[] getMMatrix()
|
||||
{
|
||||
return currMatrix;
|
||||
}
|
||||
|
||||
//获取投影矩阵
|
||||
public static float[] getProjMatrix()
|
||||
{
|
||||
return mProjMatrix;
|
||||
}
|
||||
|
||||
//获取摄像机朝向的矩阵
|
||||
public static float[] getCaMatrix()
|
||||
{
|
||||
return mVMatrix;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//设置灯光位置的方法
|
||||
static ByteBuffer llbbL = ByteBuffer.allocateDirect(3*4);
|
||||
public static void setLightLocation(float x,float y,float z)
|
||||
{
|
||||
llbbL.clear();
|
||||
|
||||
lightLocation[0]=x;
|
||||
lightLocation[1]=y;
|
||||
lightLocation[2]=z;
|
||||
|
||||
llbbL.order(ByteOrder.nativeOrder());//设置字节顺序
|
||||
lightPositionFB=llbbL.asFloatBuffer();
|
||||
lightPositionFB.put(lightLocation);
|
||||
lightPositionFB.position(0);
|
||||
}
|
||||
}
|
||||
113
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/MyActivity.java
Normal file
113
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/MyActivity.java
Normal file
@@ -0,0 +1,113 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
import android.app.Activity;
|
||||
import android.content.pm.ActivityInfo;
|
||||
import android.hardware.Sensor;
|
||||
import android.hardware.SensorEvent;
|
||||
import android.hardware.SensorEventListener;
|
||||
import android.hardware.SensorManager;
|
||||
import android.os.Bundle;
|
||||
import android.view.KeyEvent;
|
||||
import android.view.Window;
|
||||
import android.view.WindowManager;
|
||||
|
||||
public class MyActivity extends Activity {
|
||||
//SensorManager对象引用
|
||||
SensorManager mySensorManager;
|
||||
|
||||
Sensor mySensor; //传感器类型
|
||||
|
||||
MySurfaceView mySurfaceView;
|
||||
|
||||
|
||||
|
||||
@Override
|
||||
public void onCreate(Bundle savedInstanceState) {
|
||||
super.onCreate(savedInstanceState);
|
||||
|
||||
//全屏
|
||||
requestWindowFeature(Window.FEATURE_NO_TITLE);
|
||||
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN ,
|
||||
WindowManager.LayoutParams.FLAG_FULLSCREEN);
|
||||
//设置为屏模式
|
||||
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
|
||||
|
||||
//获得SensorManager对象
|
||||
mySensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
|
||||
//姿态传感器
|
||||
mySensor=mySensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
|
||||
|
||||
|
||||
mySurfaceView = new MySurfaceView(this);
|
||||
this.setContentView(mySurfaceView);
|
||||
//获取焦点
|
||||
mySurfaceView.requestFocus();
|
||||
//设置为可触控
|
||||
mySurfaceView.setFocusableInTouchMode(true);
|
||||
|
||||
}
|
||||
|
||||
private SensorEventListener mySensorListener =
|
||||
new SensorEventListener(){//开发实现了SensorEventListener接口的传感器监听器
|
||||
@Override
|
||||
public void onAccuracyChanged(Sensor sensor, int accuracy){}
|
||||
@Override
|
||||
public void onSensorChanged(SensorEvent event){
|
||||
float []values=event.values;//获取三个轴方向上的值
|
||||
|
||||
float directionDotXYZ[]=RotateUtil.getDirectionDot
|
||||
(
|
||||
new double[]{values[0],values[1],values[2]}
|
||||
);
|
||||
//标准化xy位移量
|
||||
double mLength=directionDotXYZ[0]*directionDotXYZ[0]+
|
||||
directionDotXYZ[1]*directionDotXYZ[1];
|
||||
mLength=Math.sqrt(mLength);
|
||||
|
||||
if(mLength==0)
|
||||
{
|
||||
return;
|
||||
}
|
||||
if( directionDotXYZ[2]<0)
|
||||
{
|
||||
Constant.SPANX=(float)((directionDotXYZ[1]/mLength)*0.08f);
|
||||
Constant.SPANZ=(float)((directionDotXYZ[0]/mLength)*0.08f);
|
||||
}
|
||||
else
|
||||
{
|
||||
Constant.SPANX=(float)((directionDotXYZ[1]/mLength)*0.08f);
|
||||
Constant.SPANZ=-(float)((directionDotXYZ[0]/mLength)*0.08f);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
@Override
|
||||
protected void onResume() { //重写onResume方法
|
||||
mySensorManager.registerListener( //注册监听器
|
||||
mySensorListener, //监听器对象
|
||||
mySensor, //传感器类型
|
||||
SensorManager.SENSOR_DELAY_NORMAL //传感器事件传递的频度
|
||||
);
|
||||
|
||||
super.onResume();
|
||||
}
|
||||
@Override
|
||||
protected void onPause() { //重写onPause方法
|
||||
mySensorManager.unregisterListener(mySensorListener); //取消注册监听器
|
||||
super.onPause();
|
||||
}
|
||||
@Override
|
||||
public boolean onKeyDown(int keyCode,KeyEvent e)
|
||||
{
|
||||
switch(keyCode)
|
||||
{
|
||||
case 4:
|
||||
System.exit(0);
|
||||
break;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
|
||||
}
|
||||
116
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/MyMathUtil.java
Normal file
116
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/MyMathUtil.java
Normal file
@@ -0,0 +1,116 @@
|
||||
package com.bn.Sample18_6;
|
||||
public class MyMathUtil{
|
||||
|
||||
/***
|
||||
*
|
||||
* @param a 增广矩阵
|
||||
* @return 结果数组(一维)
|
||||
*/
|
||||
static double a[][];
|
||||
//通过doolittle分解解n元一次线性方程组的工具方法
|
||||
static double[] doolittle(double a[][]){
|
||||
MyMathUtil.a=a;
|
||||
int rowNum = a.length ;//获得未知数的个数
|
||||
int xnum = a[0].length-rowNum;// 所求解的组数(一)
|
||||
|
||||
double AugMatrix[][]=new double[10][20];//拓展的增广矩阵
|
||||
|
||||
readData(a,rowNum,xnum,AugMatrix);
|
||||
|
||||
for(int i=1;i<=rowNum;i++)
|
||||
{
|
||||
prepareChoose(i,rowNum,AugMatrix);
|
||||
choose(i,rowNum,xnum,AugMatrix);
|
||||
resolve(i,rowNum,xnum,AugMatrix);
|
||||
}
|
||||
|
||||
findX(rowNum,xnum,AugMatrix);
|
||||
|
||||
double[] result=new double[rowNum];
|
||||
for(int i=0;i<rowNum;i++)
|
||||
{
|
||||
result[i]=AugMatrix[i+1][rowNum+1];
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static void readData(double a[][],int rowNum,int xnum,double AugMatrix[][])
|
||||
{//增广矩阵的拓展
|
||||
for(int i=0;i<=rowNum;i++)
|
||||
{
|
||||
AugMatrix[i][0]=0;
|
||||
}
|
||||
for(int i=0;i<=rowNum+xnum;i++)
|
||||
{
|
||||
AugMatrix[0][i]=0;
|
||||
}
|
||||
for(int i=1;i<=rowNum;i++)
|
||||
for(int j=1;j<=rowNum+xnum;j++)
|
||||
AugMatrix[i][j]=a[i-1][j-1];
|
||||
}
|
||||
|
||||
static void prepareChoose(int times,int rowNum,double AugMatrix[][])
|
||||
{//计算准备选主元
|
||||
for(int i=times;i<=rowNum;i++)
|
||||
{
|
||||
for(int j=times-1;j>=1;j--)
|
||||
{
|
||||
AugMatrix[i][times]=AugMatrix[i][times]-AugMatrix[i][j]*AugMatrix[j][times];
|
||||
}
|
||||
}
|
||||
}
|
||||
static void choose(int times,int rowNum,int xnum,double AugMatrix[][])
|
||||
{//选主元
|
||||
int line=times;
|
||||
for(int i=times+1;i<=rowNum;i++)//选最大行
|
||||
{
|
||||
if(AugMatrix[i][times]*AugMatrix[i][times]>AugMatrix[line][times]*AugMatrix[line][times])
|
||||
line=i;
|
||||
}
|
||||
if(AugMatrix[line][times]==0)//最大数等于零
|
||||
{
|
||||
System.out.println("doolittle fail !!!");
|
||||
|
||||
}
|
||||
if(line!=times)//交换
|
||||
{
|
||||
double temp;
|
||||
for(int i=1;i<=rowNum+xnum;i++)
|
||||
{
|
||||
temp=AugMatrix[times][i];
|
||||
AugMatrix[times][i]=AugMatrix[line][i];
|
||||
AugMatrix[line][i]=temp;
|
||||
}
|
||||
}
|
||||
}
|
||||
static void resolve(int times,int rowNum,int xnum,double AugMatrix[][])
|
||||
{//分解
|
||||
for(int i=times+1;i<=rowNum;i++)
|
||||
{
|
||||
AugMatrix[i][times]=AugMatrix[i][times]/AugMatrix[times][times];
|
||||
}
|
||||
for(int i=times+1;i<=rowNum+xnum;i++)
|
||||
{
|
||||
for(int j=times-1;j>=1;j--)
|
||||
{
|
||||
AugMatrix[times][i]=AugMatrix[times][i]-AugMatrix[times][j]*AugMatrix[j][i];
|
||||
}
|
||||
}
|
||||
}
|
||||
static void findX(int rowNum,int xnum,double AugMatrix[][])
|
||||
{//求解
|
||||
for(int k=1;k<=xnum;k++)
|
||||
{
|
||||
AugMatrix[rowNum][rowNum+k]=AugMatrix[rowNum][rowNum+k]/AugMatrix[rowNum][rowNum];
|
||||
for(int i=rowNum-1;i>=1;i--)
|
||||
{
|
||||
for(int j=rowNum;j>i;j--)
|
||||
{
|
||||
AugMatrix[i][rowNum+k]=AugMatrix[i][rowNum+k]-AugMatrix[i][j]*AugMatrix[j][rowNum+k];
|
||||
}
|
||||
AugMatrix[i][rowNum+k]=AugMatrix[i][rowNum+k]/AugMatrix[i][i];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,213 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import android.opengl.GLSurfaceView;
|
||||
import android.opengl.GLUtils;
|
||||
import android.opengl.GLES20;
|
||||
import android.view.MotionEvent;
|
||||
import android.view.SurfaceHolder;
|
||||
import javax.microedition.khronos.egl.EGLConfig;
|
||||
import javax.microedition.khronos.opengles.GL10;
|
||||
import android.content.Context;
|
||||
import android.graphics.Bitmap;
|
||||
import android.graphics.BitmapFactory;
|
||||
|
||||
class MySurfaceView extends GLSurfaceView {
|
||||
|
||||
private final float TOUCH_SCALE_FACTOR = 180.0f/320;//角度缩放比例
|
||||
private float mPreviousY;//上次的触控位置Y坐标
|
||||
private float mPreviousX;//上次的触控位置X坐标
|
||||
|
||||
private float cameraX=0;//摄像机的位置
|
||||
private float cameraY=30;
|
||||
private float cameraZ=0;
|
||||
|
||||
private float targetX=0;//看点
|
||||
private float targetY=0;
|
||||
private float targetZ=0;
|
||||
|
||||
private float sightDis=26;//摄像机和目标的距离
|
||||
private float angdegElevation=90;//仰角
|
||||
private float angdegAzimuth=0;//方位角
|
||||
|
||||
private SceneRenderer mRenderer;//场景渲染器
|
||||
int texFloorId; //地板的纹理id
|
||||
int texWallId; //墙面的纹理
|
||||
|
||||
BallGoThread ballGoThread; //球运动的线程
|
||||
|
||||
public MySurfaceView(Context context) {
|
||||
super(context);
|
||||
this.setEGLContextClientVersion(2); //设置使用OPENGL ES2.0
|
||||
mRenderer = new SceneRenderer(); //创建场景渲染器
|
||||
setRenderer(mRenderer); //设置渲染器
|
||||
setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);//设置渲染模式为主动渲染
|
||||
}
|
||||
|
||||
//触摸事件回调方法
|
||||
@Override
|
||||
public boolean onTouchEvent(MotionEvent e) {
|
||||
float y = e.getY();
|
||||
float x = e.getX();
|
||||
switch (e.getAction()) {
|
||||
case MotionEvent.ACTION_MOVE:
|
||||
float dy = y - mPreviousY;//计算触控笔Y位移
|
||||
float dx = x - mPreviousX;//计算触控笔X位移
|
||||
|
||||
angdegAzimuth += dx * TOUCH_SCALE_FACTOR;//设置沿y轴旋转角度
|
||||
angdegElevation+= dy * TOUCH_SCALE_FACTOR;//设置沿x轴旋转角度
|
||||
|
||||
//仰角
|
||||
if(angdegElevation>=90){
|
||||
angdegElevation=90;
|
||||
}else if(angdegElevation<=0){
|
||||
angdegElevation=0;
|
||||
}
|
||||
}
|
||||
mPreviousY = y;//记录触控笔位置
|
||||
mPreviousX = x;//记录触控笔位置
|
||||
return true;
|
||||
}
|
||||
|
||||
private class SceneRenderer implements GLSurfaceView.Renderer
|
||||
{
|
||||
CubeGroup cubeGroup;//立方体组
|
||||
BallForControl ballForControl; //球
|
||||
|
||||
public void onDrawFrame(GL10 gl)
|
||||
{
|
||||
//清除深度缓冲与颜色缓冲
|
||||
GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
|
||||
|
||||
double angradElevation=Math.toRadians(angdegElevation);//仰角(弧度)
|
||||
double angradAzimuth=Math.toRadians(angdegAzimuth);//方位角
|
||||
cameraX=(float) (targetX+sightDis*Math.cos(angradElevation)*Math.sin(angradAzimuth));
|
||||
cameraY=(float) (targetY+sightDis*Math.sin(angradElevation));
|
||||
cameraZ=(float) (targetZ+sightDis*Math.cos(angradElevation)*Math.cos(angradAzimuth));
|
||||
|
||||
MatrixState.setCamera(//设置camera位置
|
||||
cameraX, //人眼位置的X
|
||||
cameraY, //人眼位置的Y
|
||||
cameraZ, //人眼位置的Z
|
||||
|
||||
targetX, //人眼球看的点X
|
||||
targetY, //人眼球看的点Y
|
||||
targetZ, //人眼球看的点Z
|
||||
|
||||
0, //头的朝向
|
||||
1,
|
||||
0
|
||||
);
|
||||
|
||||
//绘制墙面
|
||||
MatrixState.pushMatrix();
|
||||
cubeGroup.drawSelf(texFloorId,texWallId);
|
||||
MatrixState.popMatrix();
|
||||
|
||||
MatrixState.pushMatrix();
|
||||
//绘制球
|
||||
ballForControl.drawSelf();
|
||||
MatrixState.popMatrix();
|
||||
|
||||
}
|
||||
|
||||
public void onSurfaceChanged(GL10 gl, int width, int height) {
|
||||
//设置视窗大小及位置
|
||||
GLES20.glViewport(0, 0, width, height);
|
||||
//计算GLSurfaceView的宽高比
|
||||
float ratio= (float) width / height;
|
||||
//调用此方法计算产生透视投影矩阵
|
||||
MatrixState.setProjectFrustum(-ratio, ratio, -1, 1, 4f, 100);
|
||||
//初始化光源
|
||||
MatrixState.setLightLocation(0 , 12 , 0);
|
||||
//创建线程对象
|
||||
ballGoThread=new BallGoThread(ballForControl);
|
||||
//线程标志位设为true
|
||||
ballGoThread.setFlag(true);
|
||||
//开启线程
|
||||
ballGoThread.start();
|
||||
|
||||
}
|
||||
|
||||
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
|
||||
//设置屏幕背景色RGBA
|
||||
GLES20.glClearColor(0.0f,0.0f,0.0f, 1.0f);
|
||||
//启用深度测试
|
||||
GLES20.glEnable(GLES20.GL_DEPTH_TEST);
|
||||
//设置为打开背面剪裁
|
||||
GLES20.glEnable(GLES20.GL_CULL_FACE);
|
||||
//初始化变换矩阵
|
||||
MatrixState.setInitStack();
|
||||
//地板的纹理id
|
||||
texFloorId=initTexture(R.drawable.tex_floor);
|
||||
//墙面的纹理id
|
||||
texWallId=initTexture(R.drawable.tex_wall);
|
||||
|
||||
//创建各个立方体
|
||||
cubeGroup=new CubeGroup(MySurfaceView.this,Constant.SCALE,
|
||||
Constant.CUBE_LENGTH, Constant.CUBE_HEIGHT, Constant.CUBE_WIDTH ,Constant.WALL_WIDTH);//立方体组
|
||||
|
||||
//创建球的对象
|
||||
ballForControl=new BallForControl(MySurfaceView.this,Constant.SCALE,Constant.AHALF,5);
|
||||
|
||||
|
||||
|
||||
}
|
||||
}
|
||||
@Override
|
||||
public void surfaceDestroyed(SurfaceHolder holder) {
|
||||
//关闭线程
|
||||
ballGoThread.setFlag(false);
|
||||
}
|
||||
|
||||
public int initTexture(int drawableId)//textureId
|
||||
{
|
||||
//生成纹理ID
|
||||
int[] textures = new int[1];
|
||||
GLES20.glGenTextures
|
||||
(
|
||||
1, //产生的纹理id的数量
|
||||
textures, //纹理id的数组
|
||||
0 //偏移量
|
||||
);
|
||||
int textureId=textures[0];
|
||||
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);
|
||||
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER,GLES20.GL_NEAREST);
|
||||
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D,GLES20.GL_TEXTURE_MAG_FILTER,GLES20.GL_LINEAR);
|
||||
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S,GLES20.GL_CLAMP_TO_EDGE);
|
||||
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T,GLES20.GL_CLAMP_TO_EDGE);
|
||||
|
||||
//通过输入流加载图片===============begin===================
|
||||
InputStream is = this.getResources().openRawResource(drawableId);
|
||||
Bitmap bitmapTmp;
|
||||
try
|
||||
{
|
||||
bitmapTmp = BitmapFactory.decodeStream(is);
|
||||
}
|
||||
finally
|
||||
{
|
||||
try
|
||||
{
|
||||
is.close();
|
||||
}
|
||||
catch(IOException e)
|
||||
{
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
//通过输入流加载图片===============end=====================
|
||||
|
||||
//实际加载纹理
|
||||
GLUtils.texImage2D
|
||||
(
|
||||
GLES20.GL_TEXTURE_2D, //纹理类型,在OpenGL ES中必须为GL10.GL_TEXTURE_2D
|
||||
0, //纹理的层次,0表示基本图像层,可以理解为直接贴图
|
||||
bitmapTmp, //纹理图像
|
||||
0 //纹理边框尺寸
|
||||
);
|
||||
bitmapTmp.recycle(); //纹理加载成功后释放图片
|
||||
|
||||
return textureId;
|
||||
}
|
||||
}
|
||||
100
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/RotateUtil.java
Normal file
100
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/RotateUtil.java
Normal file
@@ -0,0 +1,100 @@
|
||||
package com.bn.Sample18_6;
|
||||
/*
|
||||
* 该类为静态工具类,提供静态方法来计算
|
||||
* 小球应该的运动方向
|
||||
*/
|
||||
public class RotateUtil
|
||||
{
|
||||
//angle为弧度 gVector 为重力向量[x,y,z,1]
|
||||
//返回值为旋转后的向量
|
||||
public static double[] pitchRotate(double angle,double[] gVector)
|
||||
{
|
||||
double[][] matrix=//绕x轴旋转变换矩阵
|
||||
{
|
||||
{1,0,0,0},
|
||||
{0,Math.cos(angle),Math.sin(angle),0},
|
||||
{0,-Math.sin(angle),Math.cos(angle),0}, //原来为:{0,-Math.sin(angle),Math.cos(angle),0},
|
||||
{0,0,0,1}
|
||||
};
|
||||
|
||||
double[] tempDot={gVector[0],gVector[1],gVector[2],gVector[3]};
|
||||
for(int j=0;j<4;j++)
|
||||
{
|
||||
gVector[j]=(tempDot[0]*matrix[0][j]+tempDot[1]*matrix[1][j]+
|
||||
tempDot[2]*matrix[2][j]+tempDot[3]*matrix[3][j]);
|
||||
}
|
||||
|
||||
return gVector;
|
||||
}
|
||||
|
||||
//angle为弧度 gVector 为重力向量[x,y,z,1]
|
||||
//返回值为旋转后的向量
|
||||
public static double[] rollRotate(double angle,double[] gVector)
|
||||
{
|
||||
double[][] matrix=//绕y轴旋转变换矩阵
|
||||
{
|
||||
{Math.cos(angle),0,-Math.sin(angle),0},
|
||||
{0,1,0,0},
|
||||
{Math.sin(angle),0,Math.cos(angle),0},
|
||||
{0,0,0,1}
|
||||
};
|
||||
|
||||
double[] tempDot={gVector[0],gVector[1],gVector[2],gVector[3]};
|
||||
for(int j=0;j<4;j++)
|
||||
{
|
||||
gVector[j]=(tempDot[0]*matrix[0][j]+tempDot[1]*matrix[1][j]+
|
||||
tempDot[2]*matrix[2][j]+tempDot[3]*matrix[3][j]);
|
||||
}
|
||||
|
||||
return gVector;
|
||||
}
|
||||
|
||||
//angle为弧度 gVector 为重力向量[x,y,z,1]
|
||||
//返回值为旋转后的向量
|
||||
public static double[] yawRotate(double angle,double[] gVector)
|
||||
{
|
||||
double[][] matrix=//绕z轴旋转变换矩阵
|
||||
{
|
||||
{Math.cos(angle),Math.sin(angle),0,0},
|
||||
{-Math.sin(angle),Math.cos(angle),0,0},
|
||||
{0,0,1,0},
|
||||
{0,0,0,1}
|
||||
};
|
||||
|
||||
double[] tempDot={gVector[0],gVector[1],gVector[2],gVector[3]};
|
||||
for(int j=0;j<4;j++)
|
||||
{
|
||||
gVector[j]=(tempDot[0]*matrix[0][j]+tempDot[1]*matrix[1][j]+
|
||||
tempDot[2]*matrix[2][j]+tempDot[3]*matrix[3][j]);
|
||||
}
|
||||
|
||||
return gVector;
|
||||
}
|
||||
|
||||
|
||||
public static float[] getDirectionDot(double[] values)
|
||||
{
|
||||
double yawAngle=-Math.toRadians(values[0]);//获取Yaw轴旋转角度弧度
|
||||
double pitchAngle=-Math.toRadians(values[1]);//获取Pitch轴旋转角度弧度
|
||||
double rollAngle=-Math.toRadians(values[2]);//获取Roll轴旋转角度弧度
|
||||
|
||||
//虚拟一个重力向量
|
||||
double[] gVector={0,0,-100,1};
|
||||
|
||||
//yaw轴恢复
|
||||
gVector=RotateUtil.yawRotate(yawAngle,gVector);
|
||||
|
||||
//pitch轴恢复
|
||||
gVector=RotateUtil.pitchRotate(pitchAngle,gVector);
|
||||
|
||||
//roll轴恢复
|
||||
gVector=RotateUtil.rollRotate(rollAngle,gVector);
|
||||
|
||||
double mapX=gVector[0];
|
||||
double mapY=gVector[1];
|
||||
double mapZ=gVector[2];
|
||||
|
||||
float[] result={(float) mapX,(float) mapY,(float) mapZ};
|
||||
return result;
|
||||
}
|
||||
}
|
||||
126
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/ShaderUtil.java
Normal file
126
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/ShaderUtil.java
Normal file
@@ -0,0 +1,126 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.InputStream;
|
||||
|
||||
import android.content.res.Resources;
|
||||
import android.opengl.GLES20;
|
||||
import android.util.Log;
|
||||
|
||||
//加载顶点Shader与片元Shader的工具类
|
||||
public class ShaderUtil
|
||||
{
|
||||
//加载制定shader的方法
|
||||
public static int loadShader
|
||||
(
|
||||
int shaderType, //shader的类型 GLES20.GL_VERTEX_SHADER GLES20.GL_FRAGMENT_SHADER
|
||||
String source //shader的脚本字符串
|
||||
)
|
||||
{
|
||||
//创建一个新shader
|
||||
int shader = GLES20.glCreateShader(shaderType);
|
||||
//若创建成功则加载shader
|
||||
if (shader != 0)
|
||||
{
|
||||
//加载shader的源代码
|
||||
GLES20.glShaderSource(shader, source);
|
||||
//编译shader
|
||||
GLES20.glCompileShader(shader);
|
||||
//存放编译成功shader数量的数组
|
||||
int[] compiled = new int[1];
|
||||
//获取Shader的编译情况
|
||||
GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, compiled, 0);
|
||||
if (compiled[0] == 0)
|
||||
{//若编译失败则显示错误日志并删除此shader
|
||||
Log.e("ES20_ERROR", "Could not compile shader " + shaderType + ":");
|
||||
Log.e("ES20_ERROR", GLES20.glGetShaderInfoLog(shader));
|
||||
GLES20.glDeleteShader(shader);
|
||||
shader = 0;
|
||||
}
|
||||
}
|
||||
return shader;
|
||||
}
|
||||
|
||||
//创建shader程序的方法
|
||||
public static int createProgram(String vertexSource, String fragmentSource)
|
||||
{
|
||||
//加载顶点着色器
|
||||
int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, vertexSource);
|
||||
if (vertexShader == 0)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
//加载片元着色器
|
||||
int pixelShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);
|
||||
if (pixelShader == 0)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
//创建程序
|
||||
int program = GLES20.glCreateProgram();
|
||||
//若程序创建成功则向程序中加入顶点着色器与片元着色器
|
||||
if (program != 0)
|
||||
{
|
||||
//向程序中加入顶点着色器
|
||||
GLES20.glAttachShader(program, vertexShader);
|
||||
checkGlError("glAttachShader");
|
||||
//向程序中加入片元着色器
|
||||
GLES20.glAttachShader(program, pixelShader);
|
||||
checkGlError("glAttachShader");
|
||||
//链接程序
|
||||
GLES20.glLinkProgram(program);
|
||||
//存放链接成功program数量的数组
|
||||
int[] linkStatus = new int[1];
|
||||
//获取program的链接情况
|
||||
GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0);
|
||||
//若链接失败则报错并删除程序
|
||||
if (linkStatus[0] != GLES20.GL_TRUE)
|
||||
{
|
||||
Log.e("ES20_ERROR", "Could not link program: ");
|
||||
Log.e("ES20_ERROR", GLES20.glGetProgramInfoLog(program));
|
||||
GLES20.glDeleteProgram(program);
|
||||
program = 0;
|
||||
}
|
||||
}
|
||||
return program;
|
||||
}
|
||||
|
||||
//检查每一步操作是否有错误的方法
|
||||
public static void checkGlError(String op)
|
||||
{
|
||||
int error;
|
||||
while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR)
|
||||
{
|
||||
Log.e("ES20_ERROR", op + ": glError " + error);
|
||||
throw new RuntimeException(op + ": glError " + error);
|
||||
}
|
||||
}
|
||||
|
||||
//从sh脚本中加载shader内容的方法
|
||||
public static String loadFromAssetsFile(String fname,Resources r)
|
||||
{
|
||||
String result=null;
|
||||
try
|
||||
{
|
||||
InputStream in=r.getAssets().open(fname);
|
||||
int ch=0;
|
||||
ByteArrayOutputStream baos = new ByteArrayOutputStream();
|
||||
while((ch=in.read())!=-1)
|
||||
{
|
||||
baos.write(ch);
|
||||
}
|
||||
byte[] buff=baos.toByteArray();
|
||||
baos.close();
|
||||
in.close();
|
||||
result=new String(buff,"UTF-8");
|
||||
result=result.replaceAll("\\r\\n","\n");
|
||||
}
|
||||
catch(Exception e)
|
||||
{
|
||||
e.printStackTrace();
|
||||
}
|
||||
return result;
|
||||
}
|
||||
}
|
||||
183
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/TextureRect.java
Normal file
183
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/TextureRect.java
Normal file
@@ -0,0 +1,183 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
import static com.bn.Sample18_6.ShaderUtil.createProgram;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.ByteOrder;
|
||||
import java.nio.FloatBuffer;
|
||||
import android.opengl.GLES20;
|
||||
|
||||
//矩形平面
|
||||
public class TextureRect
|
||||
{
|
||||
int mProgram;//自定义渲染管线着色器程序id
|
||||
int muMVPMatrixHandle;//总变换矩阵引用
|
||||
int maPositionHandle; //顶点位置属性引用
|
||||
int maTexCoorHandle; //顶点纹理坐标属性引用
|
||||
|
||||
int muMMatrixHandle;//位置、旋转、缩放变换矩阵
|
||||
int maCameraHandle; //摄像机位置属性引用
|
||||
int maNormalHandle; //顶点法向量属性引用
|
||||
int maLightLocationHandle;//光源位置属性引用
|
||||
|
||||
|
||||
String mVertexShader;//顶点着色器代码脚本
|
||||
String mFragmentShader;//片元着色器代码脚本
|
||||
|
||||
FloatBuffer mVertexBuffer;//顶点坐标数据缓冲
|
||||
FloatBuffer mTexCoorBuffer;//顶点纹理坐标数据缓冲
|
||||
FloatBuffer mNormalBuffer;//顶点法向量数据缓冲
|
||||
int vCount=0;
|
||||
float xAngle=0;//绕x轴旋转的角度
|
||||
float yAngle=0;//绕y轴旋转的角度
|
||||
float zAngle=0;//绕z轴旋转的角度
|
||||
|
||||
public TextureRect(MySurfaceView mv,float scale,float a,float b)
|
||||
{
|
||||
//调用初始化顶点数据的initVertexData方法
|
||||
initVertexData(scale,a,b);
|
||||
//调用初始化着色器的intShader方法
|
||||
initShader(mv);
|
||||
}
|
||||
|
||||
//自定义初始化顶点坐标数据的方法
|
||||
public void initVertexData(float scale,float a, float b) {
|
||||
|
||||
a*=scale;
|
||||
b*=scale;
|
||||
float xOffset=a/2;
|
||||
float yOffset=b/2;
|
||||
vCount=6;
|
||||
//坐标数据初始化
|
||||
float[] vertices=new float[]{
|
||||
-xOffset,-yOffset,0,
|
||||
xOffset,yOffset,0,
|
||||
-xOffset,yOffset,0,
|
||||
|
||||
-xOffset,-yOffset,0,
|
||||
xOffset,-yOffset,0,
|
||||
xOffset,yOffset,0
|
||||
};
|
||||
ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length*4);//创建顶点坐标数据缓冲
|
||||
vbb.order(ByteOrder.nativeOrder());//设置字节顺序
|
||||
mVertexBuffer = vbb.asFloatBuffer();//转换为float型缓冲
|
||||
mVertexBuffer.put(vertices);//向缓冲区中放入顶点坐标数据
|
||||
mVertexBuffer.position(0);//设置缓冲区起始位置
|
||||
//法向量数据初始化
|
||||
float[] normals=new float[]{
|
||||
0,0,1,
|
||||
0,0,1,
|
||||
0,0,1,
|
||||
|
||||
0,0,1,
|
||||
0,0,1,
|
||||
0,0,1,
|
||||
};//法向量数组
|
||||
ByteBuffer nbb = ByteBuffer.allocateDirect(normals.length*4);//创建顶点法向量数据缓冲
|
||||
nbb.order(ByteOrder.nativeOrder());//设置字节顺序
|
||||
mNormalBuffer = nbb.asFloatBuffer();//转换为float型缓冲
|
||||
mNormalBuffer.put(normals);//向缓冲区中放入顶点法向量数据
|
||||
mNormalBuffer.position(0);//设置缓冲区起始位置
|
||||
//纹理数据的初始化
|
||||
float[] textures=new float[]{//顶点纹理S、T坐标值数组
|
||||
0,1,
|
||||
1,0,
|
||||
0,0,
|
||||
|
||||
0,1,
|
||||
1,1,
|
||||
1,0,
|
||||
};
|
||||
ByteBuffer cbb = ByteBuffer.allocateDirect(textures.length*4);//创建顶点纹理数据缓冲
|
||||
cbb.order(ByteOrder.nativeOrder());//设置字节顺序
|
||||
mTexCoorBuffer = cbb.asFloatBuffer();//转换为float型缓冲
|
||||
mTexCoorBuffer.put(textures);//向缓冲区中放入顶点纹理数据
|
||||
mTexCoorBuffer.position(0);//设置缓冲区起始位置
|
||||
}
|
||||
|
||||
//自定义初始化着色器的initShader方法
|
||||
public void initShader(MySurfaceView mv)
|
||||
{
|
||||
//加载顶点着色器的脚本内容
|
||||
mVertexShader=ShaderUtil.loadFromAssetsFile("vertex_tex_light.sh", mv.getResources());
|
||||
//加载片元着色器的脚本内容
|
||||
mFragmentShader=ShaderUtil.loadFromAssetsFile("frag_tex_light.sh", mv.getResources());
|
||||
//基于顶点着色器与片元着色器创建程序
|
||||
mProgram = createProgram(mVertexShader, mFragmentShader);
|
||||
//获取程序中顶点位置属性引用id
|
||||
maPositionHandle = GLES20.glGetAttribLocation(mProgram, "aPosition");
|
||||
//获取程序中顶点纹理坐标属性引用id
|
||||
maTexCoorHandle= GLES20.glGetAttribLocation(mProgram, "aTexCoor");
|
||||
//获取程序中总变换矩阵引用id
|
||||
muMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
|
||||
|
||||
//获取程序中顶点法向量属性引用id
|
||||
maNormalHandle= GLES20.glGetAttribLocation(mProgram, "aNormal");
|
||||
//获取程序中摄像机位置引用id
|
||||
maCameraHandle=GLES20.glGetUniformLocation(mProgram, "uCamera");
|
||||
//获取程序中光源位置引用id
|
||||
maLightLocationHandle=GLES20.glGetUniformLocation(mProgram, "uLightLocation");
|
||||
//获取位置、旋转变换矩阵引用id
|
||||
muMMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMMatrix");
|
||||
|
||||
|
||||
}
|
||||
|
||||
public void drawSelf(int texId)
|
||||
{
|
||||
//制定使用某套shader程序
|
||||
GLES20.glUseProgram(mProgram);
|
||||
//将最终变换矩阵传入shader程序
|
||||
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, MatrixState.getFinalMatrix(), 0);
|
||||
//将位置、旋转变换矩阵传入shader程序
|
||||
GLES20.glUniformMatrix4fv(muMMatrixHandle, 1, false, MatrixState.getMMatrix(), 0);
|
||||
//将摄像机位置传入shader程序
|
||||
GLES20.glUniform3fv(maCameraHandle, 1, MatrixState.cameraFB);
|
||||
//将光源位置传入shader程序
|
||||
GLES20.glUniform3fv(maLightLocationHandle, 1, MatrixState.lightPositionFB);
|
||||
|
||||
//传送顶点位置数据
|
||||
GLES20.glVertexAttribPointer
|
||||
(
|
||||
maPositionHandle,
|
||||
3,
|
||||
GLES20.GL_FLOAT,
|
||||
false,
|
||||
3*4,
|
||||
mVertexBuffer
|
||||
);
|
||||
//传送顶点纹理坐标数据
|
||||
GLES20.glVertexAttribPointer
|
||||
(
|
||||
maTexCoorHandle,
|
||||
2,
|
||||
GLES20.GL_FLOAT,
|
||||
false,
|
||||
2*4,
|
||||
mTexCoorBuffer
|
||||
);
|
||||
//传送顶点法向量数据
|
||||
GLES20.glVertexAttribPointer
|
||||
(
|
||||
maNormalHandle,
|
||||
4,
|
||||
GLES20.GL_FLOAT,
|
||||
false,
|
||||
3*4,
|
||||
mNormalBuffer
|
||||
);
|
||||
|
||||
//启用顶点位置数据
|
||||
GLES20.glEnableVertexAttribArray(maPositionHandle);
|
||||
//启用顶点纹理数据
|
||||
GLES20.glEnableVertexAttribArray(maTexCoorHandle);
|
||||
//启用顶点法向量数据
|
||||
GLES20.glEnableVertexAttribArray(maNormalHandle);
|
||||
//绑定纹理
|
||||
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
|
||||
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texId);
|
||||
|
||||
//绘制纹理矩形
|
||||
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vCount);
|
||||
}
|
||||
}
|
||||
131
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/VectorUtil.java
Normal file
131
第18章 传感器应用的开发/Sample18_6/src/com/bn/Sample18_6/VectorUtil.java
Normal file
@@ -0,0 +1,131 @@
|
||||
package com.bn.Sample18_6;
|
||||
|
||||
import java.util.ArrayList;
|
||||
|
||||
//计算三角形法向量的工具类
|
||||
public class VectorUtil {
|
||||
//向量规格化的方法
|
||||
public static float[] normalizeVector(float [] vec){
|
||||
float mod=module(vec);
|
||||
return new float[]{vec[0]/mod, vec[1]/mod, vec[2]/mod};//返回规格化后的向量
|
||||
}
|
||||
//求向量的模的方法
|
||||
public static float module(float [] vec){
|
||||
return (float) Math.sqrt(vec[0]*vec[0]+vec[1]*vec[1]+vec[2]*vec[2]);
|
||||
}
|
||||
//两个向量叉乘的方法
|
||||
public static float[] crossTwoVectors(float[] a, float[] b)
|
||||
{
|
||||
float x=a[1]*b[2]-a[2]*b[1];
|
||||
float y=a[2]*b[0]-a[0]*b[2];
|
||||
float z=a[0]*b[1]-a[1]*b[0];
|
||||
return new float[]{x, y, z};//返回叉乘结果
|
||||
}
|
||||
//两个向量点乘的方法
|
||||
public static float dotTwoVectors(float[] a, float[] b)
|
||||
{
|
||||
return a[0]*b[0]+a[1]*b[1]+a[2]*b[2];//返回点乘结果
|
||||
}
|
||||
|
||||
//根据原纹理坐标和索引,计算卷绕后的纹理的方法
|
||||
public static float[] calTextures(
|
||||
ArrayList<Float> alST,//原纹理坐标列表(未卷绕)
|
||||
ArrayList<Integer> alTexIndex//组织成面的纹理坐标的索引值列表(按逆时针卷绕)
|
||||
)
|
||||
{
|
||||
float[] textures=new float[alTexIndex.size()*2];
|
||||
//生成顶点的数组
|
||||
int stCount=0;
|
||||
for(int i:alTexIndex){
|
||||
textures[stCount++]=alST.get(2*i);
|
||||
textures[stCount++]=alST.get(2*i+1);
|
||||
}
|
||||
return textures;
|
||||
}
|
||||
public static float[] calVertices(
|
||||
ArrayList<Float> alv,//原顶点列表(未卷绕)
|
||||
ArrayList<Integer> alFaceIndex//组织成面的顶点的索引值列表(按逆时针卷绕)
|
||||
)
|
||||
{
|
||||
float[] vertices=new float[alFaceIndex.size()*3];
|
||||
//生成顶点的数组
|
||||
int vCount=0;
|
||||
for(int i:alFaceIndex){
|
||||
vertices[vCount++]=alv.get(3*i);
|
||||
vertices[vCount++]=alv.get(3*i+1);
|
||||
vertices[vCount++]=alv.get(3*i+2);
|
||||
}
|
||||
return vertices;
|
||||
}
|
||||
//计算圆弧的n等分点坐标的方法
|
||||
public static float[] devideBall(
|
||||
float r, //球的半径
|
||||
float[] start, //指向圆弧起点的向量
|
||||
float[] end, //指向圆弧终点的向量
|
||||
int n, //圆弧分的份数
|
||||
int i //求第i份在圆弧上的坐标(i为0和n时分别代表起点和终点坐标)
|
||||
)
|
||||
{
|
||||
/*
|
||||
* 先求出所求向量的规格化向量,再乘以半径r即可
|
||||
* s0*x+s1*y+s2*z=cos(angle1)//根据所求向量和起点向量夹角为angle1---1式
|
||||
* e0*x+e1*y+e2*z=cos(angle2)//根据所求向量和终点向量夹角为angle2---2式
|
||||
* x*x+y*y+z*z=1//所球向量的规格化向量模为1---3式
|
||||
* x*n0+y*n1+z*n2=0//所球向量与法向量垂直---4式
|
||||
* 算法为:将1、2两式用换元法得出x=a1+b1*z,y=a2+b2*z的形式,
|
||||
* 将其代入4式求出z,再求出x、y,最后将向量(x,y,z)乘以r即为所求坐标。
|
||||
* 1式和2式是将3式代入得到的,因此已经用上了。
|
||||
* 由于叉乘的结果做了分母,因此起点、终点、球心三点不能共线
|
||||
* 注意结果是将劣弧等分
|
||||
*/
|
||||
//先将指向起点和终点的向量规格化
|
||||
float[] s=VectorUtil.normalizeVector(start);
|
||||
float[] e=VectorUtil.normalizeVector(end);
|
||||
if(n==0){//如果n为零,返回起点坐标
|
||||
return new float[]{s[0]*r, s[1]*r, s[2]*r};
|
||||
}
|
||||
//求两个向量的夹角
|
||||
double angrad=Math.acos(VectorUtil.dotTwoVectors(s, e));//起点终点向量夹角
|
||||
double angrad1=angrad*i/n;//所球向量和起点向量的夹角
|
||||
double angrad2=angrad-angrad1;//所球向量和终点向量的夹角
|
||||
//求法向量normal
|
||||
float[] normal=VectorUtil.crossTwoVectors(s, e);
|
||||
//用doolittle分解算法解n元一次线性方程组
|
||||
double matrix[][]={//增广矩阵
|
||||
{s[0],s[1],s[2],Math.cos(angrad1)},
|
||||
{e[0],e[1],e[2],Math.cos(angrad2)},
|
||||
{normal[0],normal[1],normal[2],0}
|
||||
};
|
||||
double result[]=MyMathUtil.doolittle(matrix);//解
|
||||
//求规格化向量xyz的值
|
||||
float x=(float) result[0];
|
||||
float y=(float) result[1];
|
||||
float z=(float) result[2];
|
||||
//返回圆弧的n等分点坐标
|
||||
return new float[]{x*r, y*r, z*r};
|
||||
}
|
||||
//计算线段的n等分点坐标的方法
|
||||
public static float[] devideLine(
|
||||
float[] start, //线段起点坐标
|
||||
float[] end, //线段终点坐标
|
||||
int n, //线段分的份数
|
||||
int i //求第i份在线段上的坐标(i为0和n时分别代表起点和终点坐标)
|
||||
)
|
||||
{
|
||||
if(n==0){//如果n为零,返回起点坐标
|
||||
return start;
|
||||
}
|
||||
//求起点到终点的向量
|
||||
float[] ab=new float[]{end[0]-start[0], end[1]-start[1], end[2]-start[2]};
|
||||
//求向量比例
|
||||
float vecRatio=i/(float)n;
|
||||
//求起点到所求点的向量
|
||||
float[] ac=new float[]{ab[0]*vecRatio, ab[1]*vecRatio, ab[2]*vecRatio};
|
||||
//所求坐标
|
||||
float x=start[0]+ac[0];
|
||||
float y=start[1]+ac[1];
|
||||
float z=start[2]+ac[2];
|
||||
//返回线段的n等分点坐标
|
||||
return new float[]{x, y, z};
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user