初次提交
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@@ -0,0 +1,7 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="src" path="gen"/>
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<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>
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@@ -0,0 +1,33 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Sample8_5</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
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||||
<arguments>
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</arguments>
|
||||
</buildCommand>
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||||
<buildCommand>
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||||
<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
|
||||
<arguments>
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||||
</arguments>
|
||||
</buildCommand>
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||||
<buildCommand>
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||||
<name>org.eclipse.jdt.core.javabuilder</name>
|
||||
<arguments>
|
||||
</arguments>
|
||||
</buildCommand>
|
||||
<buildCommand>
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||||
<name>com.android.ide.eclipse.adt.ApkBuilder</name>
|
||||
<arguments>
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||||
</arguments>
|
||||
</buildCommand>
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||||
</buildSpec>
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||||
<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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#Tue Nov 22 14:54:31 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
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=1.5
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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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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@@ -0,0 +1,18 @@
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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.Sample8_5"
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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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@@ -0,0 +1,12 @@
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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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@@ -0,0 +1,13 @@
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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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@@ -0,0 +1,48 @@
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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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void main()
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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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}
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@@ -0,0 +1,48 @@
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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 vec2 aTexCoor; //顶点纹理坐标
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varying vec2 vTextureCoord; //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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||||
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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
|
||||
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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void main()
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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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vTextureCoord = aTexCoor;//将接收的纹理坐标传递给片元着色器
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}
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@@ -0,0 +1,11 @@
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# This file is automatically generated by Android Tools.
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||||
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
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||||
#
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||||
# 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
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||||
@@ -0,0 +1,31 @@
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||||
/* AUTO-GENERATED FILE. DO NOT MODIFY.
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||||
*
|
||||
* 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.Sample8_5;
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||||
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||||
public final class R {
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||||
public static final class attr {
|
||||
}
|
||||
public static final class drawable {
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||||
public static final int android_robot0=0x7f020000;
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||||
public static final int icon=0x7f020001;
|
||||
}
|
||||
public static final class id {
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||||
public static final int RadioButton01=0x7f050003;
|
||||
public static final int RadioButton02=0x7f050004;
|
||||
public static final int RadioGroup01=0x7f050001;
|
||||
public static final int main_liner=0x7f050000;
|
||||
public static final int textView1=0x7f050002;
|
||||
}
|
||||
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;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,40 @@
|
||||
-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 *;
|
||||
}
|
||||
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|
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|
After Width: | Height: | Size: 2.5 KiB |
@@ -0,0 +1,34 @@
|
||||
<?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"
|
||||
android:id="@+id/main_liner"
|
||||
>
|
||||
<RadioGroup
|
||||
android:id="@+id/RadioGroup01"
|
||||
android:orientation="horizontal"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content">
|
||||
<TextView
|
||||
android:text="填充方式:"
|
||||
android:id="@+id/textView1"
|
||||
android:textSize="16dip"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content">
|
||||
</TextView>
|
||||
<RadioButton
|
||||
android:text="面填充"
|
||||
android:id="@+id/RadioButton01"
|
||||
android:checked="true"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content">
|
||||
</RadioButton>
|
||||
<RadioButton
|
||||
android:text="线填充"
|
||||
android:id="@+id/RadioButton02"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content">
|
||||
</RadioButton>
|
||||
</RadioGroup>
|
||||
</LinearLayout>
|
||||
@@ -0,0 +1,5 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<resources>
|
||||
<string name="hello">Hello World, Sample9_1Activity!</string>
|
||||
<string name="app_name">Sample8_5</string>
|
||||
</resources>
|
||||
@@ -0,0 +1,182 @@
|
||||
package com.bn.Sample8_5;
|
||||
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);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,91 @@
|
||||
package com.bn.Sample8_5;
|
||||
|
||||
import android.app.Activity;
|
||||
import android.content.pm.ActivityInfo;
|
||||
import android.os.Bundle;
|
||||
import android.view.KeyEvent;
|
||||
import android.view.Window;
|
||||
import android.view.WindowManager;
|
||||
import android.widget.CompoundButton;
|
||||
import android.widget.LinearLayout;
|
||||
import android.widget.RadioButton;
|
||||
import android.widget.CompoundButton.OnCheckedChangeListener;
|
||||
|
||||
|
||||
public class MyActivity extends Activity {
|
||||
MySurfaceView mySurfaceView;
|
||||
@Override
|
||||
public void onCreate(Bundle savedInstanceState) {
|
||||
super.onCreate(savedInstanceState);
|
||||
//设置为全屏
|
||||
requestWindowFeature(Window.FEATURE_NO_TITLE);
|
||||
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN ,
|
||||
WindowManager.LayoutParams.FLAG_FULLSCREEN);
|
||||
//设置为横屏模式
|
||||
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
|
||||
//切换到主界面
|
||||
setContentView(R.layout.main);
|
||||
//初始化GLSurfaceView
|
||||
mySurfaceView = new MySurfaceView(this);
|
||||
mySurfaceView.requestFocus();//获取焦点
|
||||
mySurfaceView.setFocusableInTouchMode(true);//设置为可触控
|
||||
//将自定义的GLSurfaceView添加到外层LinearLayout中
|
||||
LinearLayout ll=(LinearLayout)findViewById(R.id.main_liner);
|
||||
ll.addView(mySurfaceView);
|
||||
|
||||
|
||||
//为RadioButton添加监听器及SxT选择代码
|
||||
RadioButton rab=(RadioButton)findViewById(R.id.RadioButton01);
|
||||
rab.setOnCheckedChangeListener(
|
||||
new OnCheckedChangeListener()
|
||||
{
|
||||
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked)
|
||||
{
|
||||
//面填充
|
||||
if(isChecked)
|
||||
{
|
||||
mySurfaceView.drawWhatFlag=true;
|
||||
}
|
||||
}
|
||||
}
|
||||
);
|
||||
rab=(RadioButton)findViewById(R.id.RadioButton02);
|
||||
|
||||
rab.setOnCheckedChangeListener(
|
||||
new OnCheckedChangeListener()
|
||||
{
|
||||
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked)
|
||||
{
|
||||
//线填充
|
||||
if(isChecked)
|
||||
{
|
||||
mySurfaceView.drawWhatFlag=false;
|
||||
}
|
||||
}
|
||||
}
|
||||
);
|
||||
}
|
||||
@Override
|
||||
protected void onResume() {
|
||||
super.onResume();
|
||||
mySurfaceView.onResume();
|
||||
mySurfaceView.lightFlag=true;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onPause() {
|
||||
super.onPause();
|
||||
mySurfaceView.onPause();
|
||||
mySurfaceView.lightFlag=false;
|
||||
}
|
||||
public boolean onKeyDown(int keyCode,KeyEvent e)
|
||||
{
|
||||
switch(keyCode)
|
||||
{
|
||||
case 4:
|
||||
System.exit(0);
|
||||
break;
|
||||
}
|
||||
return true;
|
||||
};
|
||||
}
|
||||
@@ -0,0 +1,110 @@
|
||||
package com.bn.Sample8_5;
|
||||
public class MyMathUtil{
|
||||
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 +1,190 @@
|
||||
package com.bn.Sample8_5;
|
||||
|
||||
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 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 SceneRenderer mRenderer;//场景渲染器
|
||||
int textureId; //系统分配的纹理id
|
||||
|
||||
boolean drawWhatFlag=true; //绘制线填充方式的标志位
|
||||
boolean lightFlag=true; //光照旋转的标志位
|
||||
|
||||
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
|
||||
mRenderer.regular20.yAngle += dx * TOUCH_SCALE_FACTOR;//设置绕y轴旋转角度
|
||||
mRenderer.regular20.zAngle+= dy * TOUCH_SCALE_FACTOR;//设置绕z轴旋转角度
|
||||
|
||||
mRenderer.regular20l.yAngle += dx * TOUCH_SCALE_FACTOR;//设置绕y轴旋转角度
|
||||
mRenderer.regular20l.zAngle+= dy * TOUCH_SCALE_FACTOR;//设置绕z轴旋转角度
|
||||
}
|
||||
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
|
||||
{
|
||||
|
||||
Regular20 regular20;
|
||||
Regular20L regular20l;
|
||||
|
||||
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);
|
||||
|
||||
//保护现场
|
||||
MatrixState.pushMatrix();
|
||||
MatrixState.translate(0, 0, -10);
|
||||
|
||||
if(drawWhatFlag)
|
||||
{
|
||||
regular20.drawSelf(textureId);
|
||||
}
|
||||
else
|
||||
{
|
||||
regular20l.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);
|
||||
//调用此方法产生摄像机9参数位置矩阵
|
||||
MatrixState.setCamera(0,0,8.0f,0f,0f,0f,0f,1.0f,0.0f);
|
||||
|
||||
//初始化光源
|
||||
MatrixState.setLightLocation(10 , 0 , -10);
|
||||
|
||||
//启动一个线程定时修改灯光的位置
|
||||
new Thread()
|
||||
{
|
||||
public void run()
|
||||
{
|
||||
float redAngle = 0;
|
||||
while(lightFlag)
|
||||
{
|
||||
//根据角度计算灯光的位置
|
||||
redAngle=(redAngle+5)%360;
|
||||
float rx=(float) (15*Math.sin(Math.toRadians(redAngle)));
|
||||
float rz=(float) (15*Math.cos(Math.toRadians(redAngle)));
|
||||
MatrixState.setLightLocation(rx, 0, rz);
|
||||
|
||||
try {
|
||||
Thread.sleep(40);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
}.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();
|
||||
//加载纹理
|
||||
textureId=initTexture(R.drawable.android_robot0);
|
||||
|
||||
//创建正20面体对象
|
||||
regular20 = new Regular20(MySurfaceView.this,2,1.6f,5);
|
||||
//创建正20面体骨架对象
|
||||
regular20l= new Regular20L(MySurfaceView.this,2,1.6f,5);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,367 @@
|
||||
package com.bn.Sample8_5;
|
||||
|
||||
import static com.bn.Sample8_5.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 Regular20
|
||||
{
|
||||
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;
|
||||
|
||||
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
|
||||
|
||||
|
||||
float bHalf=0;//黄金长方形的宽
|
||||
float r=0;//球的半径
|
||||
|
||||
public Regular20(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,黄金长方形长边的一半,分段数
|
||||
{
|
||||
aHalf*=scale; //长边的一半
|
||||
bHalf=aHalf*0.618034f; //短边的一半
|
||||
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
|
||||
initAlVertix20(alVertix20,aHalf,bHalf);
|
||||
//正20面体索引
|
||||
initAlFaceIndex20(alFaceIndex20);
|
||||
//计算卷绕顶点
|
||||
float[] vertices20=VectorUtil.cullVertex(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
|
||||
}// k
|
||||
|
||||
//计算卷绕顶点
|
||||
float[] vertices=VectorUtil.cullVertex(alVertix, alFaceIndex);//只计算顶点
|
||||
float[] normals=vertices;//顶点就是法向量
|
||||
|
||||
//纹理
|
||||
//正20面体纹理坐标数据初始化
|
||||
ArrayList<Float> alST20=new ArrayList<Float>();//正20面体的纹理坐标列表(未卷绕)
|
||||
ArrayList<Integer> alTexIndex20=new ArrayList<Integer>();//正20面体组织成面的纹理坐标的索引值列表(按逆时针卷绕)
|
||||
//正20面体纹理坐标
|
||||
float sSpan=1/5.5f;//每个纹理三角形的边长
|
||||
float tSpan=1/3.0f;//每个纹理三角形的高
|
||||
//按正二十面体的平面展开图计算纹理坐标
|
||||
for(int i=0;i<5;i++){
|
||||
alST20.add(sSpan+sSpan*i); alST20.add(0f);
|
||||
}
|
||||
for(int i=0;i<6;i++){
|
||||
alST20.add(sSpan/2+sSpan*i); alST20.add(tSpan);
|
||||
}
|
||||
for(int i=0;i<6;i++){
|
||||
alST20.add(sSpan*i); alST20.add(tSpan*2);
|
||||
}
|
||||
for(int i=0;i<5;i++){
|
||||
alST20.add(sSpan/2+sSpan*i); alST20.add(tSpan*3);
|
||||
}
|
||||
//正20面体索引
|
||||
initAlTexIndex20(alTexIndex20);
|
||||
|
||||
//计算卷绕纹理坐标
|
||||
float[] st20=VectorUtil.cullTexCoor(alST20, alTexIndex20);//只计算纹理坐标
|
||||
ArrayList<Float> alST=new ArrayList<Float>();//原纹理坐标列表(未卷绕)
|
||||
for(int k=0;k<st20.length;k+=6)
|
||||
{
|
||||
float [] st1=new float[]{st20[k+0], st20[k+1], 0};//三角形的纹理坐标
|
||||
float [] st2=new float[]{st20[k+2], st20[k+3], 0};
|
||||
float [] st3=new float[]{st20[k+4], st20[k+5], 0};
|
||||
for(int i=0;i<=n;i++)
|
||||
{
|
||||
float[] stiStart=VectorUtil.devideLine(st1, st2, n, i);
|
||||
float[] stiEnd=VectorUtil.devideLine(st1, st3, n, i);
|
||||
for(int j=0;j<=i;j++)
|
||||
{
|
||||
float[] sti=VectorUtil.devideLine(stiStart, stiEnd, i, j);
|
||||
//将纹理坐标加入列表
|
||||
alST.add(sti[0]); alST.add(sti[1]);
|
||||
}
|
||||
}
|
||||
}
|
||||
//计算卷绕后纹理坐标
|
||||
float[] textures=VectorUtil.cullTexCoor(alST, alFaceIndex);
|
||||
|
||||
//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
|
||||
//st坐标数据初始化
|
||||
ByteBuffer tbb = ByteBuffer.allocateDirect(textures.length*4);//创建顶点纹理数据缓冲
|
||||
tbb.order(ByteOrder.nativeOrder());//设置字节顺序为本地操作系统顺序
|
||||
mTexCoorBuffer = tbb.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
|
||||
}
|
||||
|
||||
public void initAlVertix20(ArrayList<Float> alVertix20,float aHalf,float bHalf){
|
||||
|
||||
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
|
||||
|
||||
}
|
||||
|
||||
public void initAlFaceIndex20(ArrayList<Integer> alFaceIndex20){ //初始化正二十面体的顶点索引数据
|
||||
|
||||
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);
|
||||
}
|
||||
public void initAlTexIndex20(ArrayList<Integer> alTexIndex20) //初始化顶点纹理索引数据
|
||||
{
|
||||
alTexIndex20.add(0); alTexIndex20.add(5); alTexIndex20.add(6);
|
||||
alTexIndex20.add(1); alTexIndex20.add(6); alTexIndex20.add(7);
|
||||
alTexIndex20.add(2); alTexIndex20.add(7); alTexIndex20.add(8);
|
||||
alTexIndex20.add(3); alTexIndex20.add(8); alTexIndex20.add(9);
|
||||
alTexIndex20.add(4); alTexIndex20.add(9); alTexIndex20.add(10);
|
||||
|
||||
alTexIndex20.add(5); alTexIndex20.add(11); alTexIndex20.add(12);
|
||||
alTexIndex20.add(5); alTexIndex20.add(12); alTexIndex20.add(6);
|
||||
alTexIndex20.add(6); alTexIndex20.add(12); alTexIndex20.add(13);
|
||||
alTexIndex20.add(6); alTexIndex20.add(13); alTexIndex20.add(7);
|
||||
alTexIndex20.add(7); alTexIndex20.add(13); alTexIndex20.add(14);
|
||||
alTexIndex20.add(7); alTexIndex20.add(14); alTexIndex20.add(8);
|
||||
alTexIndex20.add(8); alTexIndex20.add(14); alTexIndex20.add(15);
|
||||
alTexIndex20.add(8); alTexIndex20.add(15); alTexIndex20.add(9);
|
||||
alTexIndex20.add(9); alTexIndex20.add(15); alTexIndex20.add(16);
|
||||
alTexIndex20.add(9); alTexIndex20.add(16); alTexIndex20.add(10);
|
||||
|
||||
alTexIndex20.add(11); alTexIndex20.add(17); alTexIndex20.add(12);
|
||||
alTexIndex20.add(12); alTexIndex20.add(18); alTexIndex20.add(13);
|
||||
alTexIndex20.add(13); alTexIndex20.add(19); alTexIndex20.add(14);
|
||||
alTexIndex20.add(14); alTexIndex20.add(20); alTexIndex20.add(15);
|
||||
alTexIndex20.add(15); alTexIndex20.add(21); alTexIndex20.add(16);
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
//自定义初始化着色器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)
|
||||
{
|
||||
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);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,288 @@
|
||||
package com.bn.Sample8_5;
|
||||
|
||||
import static com.bn.Sample8_5.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 Regular20L
|
||||
{
|
||||
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 Regular20L(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.cullVertex(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.cullVertex(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 +1,126 @@
|
||||
package com.bn.Sample8_5;
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,131 @@
|
||||
package com.bn.Sample8_5;
|
||||
|
||||
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[] cullTexCoor(
|
||||
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[] cullVertex(
|
||||
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