初次提交

第10章 混合与雾/Sample10_1a/assets/cft.obj

@@ -0,0 +1,30 @@
+# Max2Obj Version 4.0 Mar 10th, 2001
+#
+# object (null) to come ...
+#
+v  -3.681371 -0.000000 3.975810
+v  3.654120 -0.000000 3.975810
+v  -3.681371 -0.000000 -3.988921
+v  3.654120 -0.000000 -3.988921
+v  -3.681371 8.567677 3.975810
+v  3.654120 8.567677 3.975810
+v  -3.681371 8.567677 -3.988921
+v  3.654120 8.567677 -3.988921
+# 8 vertices
+
+g (null)
+f 1 3 4
+f 4 2 1
+f 5 6 8
+f 8 7 5
+f 1 2 6
+f 6 5 1
+f 2 4 8
+f 8 6 2
+f 4 3 7
+f 7 8 4
+f 3 1 5
+f 5 7 3
+# 12 faces
+
+g

第10章 混合与雾/Sample10_1a/assets/frag_light.sh

@@ -0,0 +1,9 @@
+precision mediump float;
+varying vec4 ambient;
+varying vec4 diffuse;
+varying vec4 specular;
+void main()                         
+{//绘制球本身，纹理从球纹理采样
+	vec4 finalColor=vec4(1.0,1.0,1.0,0.0);//物体颜色
+	gl_FragColor = finalColor*ambient+finalColor*specular+finalColor*diffuse;//给此片元颜色值   
+}              

第10章 混合与雾/Sample10_1a/assets/frag_tex.sh

@@ -0,0 +1,8 @@
+precision mediump float;
+varying vec2 vTextureCoord;//接收从顶点着色器过来的参数
+uniform sampler2D sTexture;//纹理内容数据
+void main()                         
+{           
+   //给此片元从纹理中采样出颜色值            
+   gl_FragColor = texture2D(sTexture, vTextureCoord); 
+}              

第10章 混合与雾/Sample10_1a/assets/pm.obj

@@ -0,0 +1,67 @@
+# Max2Obj Version 4.0 Mar 10th, 2001
+#
+# object (null) to come ...
+#
+v  -61.054153 0.000000 60.416534
+v  -30.540934 0.000000 60.416534
+v  -0.027714 0.000000 60.416534
+v  30.485506 0.000000 60.416534
+v  60.998726 0.000000 60.416534
+v  -61.054153 0.000000 30.207113
+v  -30.540934 0.000000 30.207113
+v  -0.027714 0.000000 30.207113
+v  30.485506 0.000000 30.207113
+v  60.998726 0.000000 30.207113
+v  -61.054153 0.000000 -0.002306
+v  -30.540934 0.000000 -0.002306
+v  -0.027714 0.000000 -0.002306
+v  30.485506 0.000000 -0.002306
+v  60.998726 0.000000 -0.002306
+v  -61.054153 0.000000 -30.211725
+v  -30.540934 0.000000 -30.211725
+v  -0.027714 0.000000 -30.211725
+v  30.485506 0.000000 -30.211725
+v  60.998726 0.000000 -30.211725
+v  -61.054153 0.000000 -60.421146
+v  -30.540934 0.000000 -60.421146
+v  -0.027714 0.000000 -60.421146
+v  30.485506 0.000000 -60.421146
+v  60.998726 0.000000 -60.421146
+# 25 vertices
+
+g (null)
+f 6 1 7
+f 2 7 1
+f 7 2 8
+f 3 8 2
+f 8 3 9
+f 4 9 3
+f 9 4 10
+f 5 10 4
+f 11 6 12
+f 7 12 6
+f 12 7 13
+f 8 13 7
+f 13 8 14
+f 9 14 8
+f 14 9 15
+f 10 15 9
+f 16 11 17
+f 12 17 11
+f 17 12 18
+f 13 18 12
+f 18 13 19
+f 14 19 13
+f 19 14 20
+f 15 20 14
+f 21 16 22
+f 17 22 16
+f 22 17 23
+f 18 23 17
+f 23 18 24
+f 19 24 18
+f 24 19 25
+f 20 25 19
+# 32 faces
+
+g

第10章 混合与雾/Sample10_1a/assets/vertex_light.sh

@@ -0,0 +1,49 @@
+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
+attribute vec3 aPosition;  //顶点位置
+attribute vec3 aNormal;    //顶点法向量
+varying vec4 ambient;
+varying vec4 diffuse;
+varying vec4 specular; 
+//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  
+  vec3 normalTarget=aPosition+normal;	//计算变换后的法向量
+  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);  
+  //计算从表面点到光源位置的向量vp
+  vec3 vp= normalize(lightLocation-(uMMatrix*vec4(aPosition,1)).xyz);  
+  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
+   vec4 ambientTemp, diffuseTemp, specularTemp;   //存放环境光、散射光、镜面反射光的临时变量   
+   
+   pointLight(normalize(aNormal),ambientTemp,diffuseTemp,specularTemp,uLightLocation,vec4(0.4,0.4,0.4,1.0),vec4(0.7,0.7,0.7,1.0),vec4(0.3,0.3,0.3,1.0));
+   
+   ambient=ambientTemp;
+   diffuse=diffuseTemp;
+   specular=specularTemp;
+}                      

第10章 混合与雾/Sample10_1a/assets/vertex_tex.sh

@@ -0,0 +1,9 @@
+uniform mat4 uMVPMatrix; //总变换矩阵
+attribute vec3 aPosition;  //顶点位置
+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
+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
+   vTextureCoord = aTexCoor;//将接收的纹理坐标传递给片元着色器
+}

第10章 混合与雾/Sample10_1a/assets/yh.obj

@@ -0,0 +1,874 @@
+# Max2Obj Version 4.0 Mar 10th, 2001
+#
+# object (null) to come ...
+#
+v  -0.052045 11.934561 -0.071060
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+v  -0.052045 9.459118 1.876815
+v  -0.052045 8.834325 1.073145
+v  -0.052045 8.592483 -0.031862
+v  -0.052045 8.798395 -1.142120
+v  -0.052045 9.396887 -1.960137
+v  -0.052045 10.227592 -2.266726
+v  -0.052045 11.067925 -1.979736
+v  -0.052045 11.692719 -1.176066
+v  1.589505 11.722996 -0.068578
+v  1.530315 11.524712 1.041591
+v  1.368607 10.947062 1.859363
+v  1.147708 10.144825 2.165618
+v  0.926810 9.332962 1.878294
+v  0.765101 8.729010 1.074380
+v  0.705912 8.494797 -0.030716
+v  0.765101 8.693080 -1.140885
+v  0.926810 9.270731 -1.958658
+v  1.147708 10.072968 -2.264912
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+v  3.119186 11.102718 -0.061303
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+# 576 faces
+
+g