如果做过Zune上XNA 3.1开发的朋友可能会记得，在XNA 3.1中是不支持3D开发的，XNA 4.0中加入的3D支持类，主要包含在Microsoft.Xna.Framework.Graphics命名空间中。

微软前段时间发布根据XNA结构Windows Phone 7游戏开发实例，看到Silverlight for Phone和XNA 4.0的开发文章已经有了不少，并且质量很高。而XNA 4.0的3D开发这个范畴的文章还不是许多，XNA 4.0的3D类库规划的非常好，比iPhone和Android的OpenGLES类库高出一个层次。今后学习3D开发，用XNA类库也是个不错的挑选，并且Windows Phone模拟器对3D的支撑也非常好。仅有的惋惜是，Windows Phone不支撑C++的3D开发。

详解Windows Phone XNA 4.0 3D游戏开发 Windows 第1张

51CTO引荐专题：Windows Phone使用开发详解

程序代码编译环境Visual Stuido 2010, Windows Phone 7 SDK, XNA 4.0 Game Studio, 下载链接：http://files.cnblogs.com/aawolf/XNA_aawolf_3D.rar

假如做过Zune上XNA 3.1开发的朋友可能会记住，在XNA 3.1中是不支撑3D开发的，XNA 4.0中参加的3D支撑类，首要包含在Microsoft.Xna.Framework.Graphics命名空间中。假如XNA 4.0中的3D概念与OpenGLES十分相似，咱们能够找到许多相对应的函数、办法等，某种意义上，XNA 4.0的3D支撑是对OpenGLES 2.0的封装。

一个简略的3D程序

咱们就从一个简略的3D程序开端吧，这个程序的本来介绍在下面这个链接里。

http://msdn.microsoft.com/en-us/library/bb203926.aspx

不过移植到Windows Phone 7上时，仍是遇到了一些小问题，有的是文档的问题，有的是接口改变。如安在Visual Studio 2010里创立XNA 4.0的工程就不多说了，咱们能够参阅我写的《Windows Phone开发工具初体验》，链接如下：

http://www.cnblogs.com/aawolf/archive/2010/08/28/1811438.html

XNA 4.0的程序是派生自Microsoft.Xna.Framework.Game的类，开发者需求重载Game的四个办法：Initialize（初始化）、LoadContent（加载内容）、UnloadContent（卸载内容）、Update（更新）和Draw（制作）等办法。

首要，咱们在Game1类中参加所需求的一些私有变量：

  1. MatrixworldMatrix; 
  3. MatrixviewMatrix; 
  5. MatrixprojectionMatrix; 
  7. VertexPositionNormalTexture[]cubeVertices; 
  9. VertexDeclarationvertexDeclaration; 
  11. VertexBuffervertexBuffer; 
  13. BasicEffectbasicEffect;

Martrix 的中文名叫“矩阵”，还有个翻译叫“黑客帝国”……扯远了，什么是矩阵？咱们就不解说了，只需知道矩阵是全部3D线性改变的根底就能够了。咱们不知道矩阵是什么，却身处其间。在Game1类中用了三个矩阵：worldMatrix用来描绘国际坐标系；viewMatrix用来描绘开麦拉坐标系；projectionMatrix用来描绘投影坐标系。这些都是3D图形学的概念，不解说了。

别的两个重要的变量是vertexBuffer和basicEffect。vertexBuffer包含了一系列的向量，这些向量构成了咱们要显现的正方体的各个极点；basicEffect用来描绘一个根底的烘托作用，其间描绘了坐标系、色彩和灯火等根本的要素，这些要素是3D图形显现的根底。

接下来创立一个叫InitMatrices的办法，对各个坐标系进行初始化，记住，这个InitMatrices的函数是咱们自己创立的，代码如下：

  1. privatevoidInitMatrices() 
  3. { 
  5. //Initializetheworld,view,andprojectionmatrices. 
  7. floattilt=MathHelper.ToRadians(0);//0degreeangle 
  9. //Usetheworldmatrixtotiltthecubealongxandyaxes. 
  11. worldMatrix=Matrix.CreateRotationX(tilt)*Matrix.CreateRotationY(tilt); 
  13. viewMatrix=Matrix.CreateLookAt(newVector3(5,5,5),Vector3.Zero,Vector3.Up); 
  15. projectionMatrix=Matrix.CreatePerspectiveFieldOfView( 
  17. MathHelper.ToRadians(45),//45degreeangle 
  19. (float)GraphicsDevice.Viewport.Width/ 
  21. (float)GraphicsDevice.Viewport.Height, 
  23. 1.0f,100.0f); 
  25. }

算了，不解说了，咱们知道这段代码在干什么就好了。接下来，创立一个叫做InitEffect的函数中，对basicEffect进行初始化，代码如下：

  1. privatevoidInitEffect() 
  3. { 
  5. //InitializeBasicEffectwithtransformationandlightvalues 
  7. basicEffect=newBasicEffect(graphics.GraphicsDevice); 
  9. basicEffect.World=worldMatrix; 
  11. basicEffect.View=viewMatrix; 
  13. basicEffect.Projection=projectionMatrix; 
  15. //primitivecolor 
  17. basicEffect.AmbientLightColor=newVector3(0.1f,0.1f,0.1f); 
  19. basicEffect.DiffuseColor=newVector3(1.0f,1.0f,1.0f); 
  21. basicEffect.SpecularColor=newVector3(0.25f,0.25f,0.25f); 
  23. basicEffect.SpecularPower=5.0f; 
  25. basicEffect.Alpha=1.0f; 
  27. basicEffect.LightingEnabled=true; 
  29. if(basicEffect.LightingEnabled) 
  31. { 
  33. basicEffect.DirectionalLight0.Enabled=true;//enableeachlightindividually 
  35. if(basicEffect.DirectionalLight0.Enabled) 
  37. { 
  39. //xdirection 
  41. basicEffect.DirectionalLight0.DiffuseColor=newVector3(1,0,0);//rangeis0to1 
  43. basicEffect.DirectionalLight0.Direction=Vector3.Normalize(newVector3(-1,0,0)); 
  45. //pointsfromthelighttotheoriginofthescene 
  47. basicEffect.DirectionalLight0.SpecularColor=Vector3.One; 
  49. } 
  51. basicEffect.DirectionalLight1.Enabled=true; 
  53. if(basicEffect.DirectionalLight1.Enabled) 
  55. { 
  57. //ydirection 
  59. basicEffect.DirectionalLight1.DiffuseColor=newVector3(0,0.75f,0); 
  61. basicEffect.DirectionalLight1.Direction=Vector3.Normalize(newVector3(0,-1,0)); 
  63. basicEffect.DirectionalLight1.SpecularColor=Vector3.One; 
  65. } 
  67. basicEffect.DirectionalLight2.Enabled=true; 
  69. if(basicEffect.DirectionalLight2.Enabled) 
  71. { 
  73. //zdirection 
  75. basicEffect.DirectionalLight2.DiffuseColor=newVector3(0,0,0.5f); 
  77. basicEffect.DirectionalLight2.Direction=Vector3.Normalize(newVector3(0,0,-1)); 
  79. basicEffect.DirectionalLight2.SpecularColor=Vector3.One; 
  81. } 
  83. } 
  85. }

然后要对vertexDeclaration、cubeVertices和vertexBuffer变量进行初始化，咱们将这部分代码放在InitVertexBuffer函数中：

  1. privatevoidInitVertexBuffer() 
  3. { 
  5. //CreateavertexdeclarationforthetypeVertexPositionNormalTexture 
  7. vertexDeclaration=newVertexDeclaration(newVertexElement[] 
  9. { 
  11. newVertexElement(0,VertexElementFormat.Vector3,VertexElementUsage.Position,0), 
  13. newVertexElement(12,VertexElementFormat.Vector3,VertexElementUsage.Normal,0), 
  15. newVertexElement(24,VertexElementFormat.Vector2,VertexElementUsage.TextureCoordinate,0) 
  17. } 
  19. ); 
  21. //Createthepervertexdata 
  23. cubeVertices=newVertexPositionNormalTexture[36]; 
  25. Vector3topLeftFront=newVector3(-1.0f,1.0f,1.0f); 
  27. Vector3bottomLeftFront=newVector3(-1.0f,-1.0f,1.0f); 
  29. Vector3topRightFront=newVector3(1.0f,1.0f,1.0f); 
  31. Vector3bottomRightFront=newVector3(1.0f,-1.0f,1.0f); 
  33. Vector3topLeftBack=newVector3(-1.0f,1.0f,-1.0f); 
  35. Vector3topRightBack=newVector3(1.0f,1.0f,-1.0f); 
  37. Vector3bottomLeftBack=newVector3(-1.0f,-1.0f,-1.0f); 
  39. Vector3bottomRightBack=newVector3(1.0f,-1.0f,-1.0f); 
  41. Vector2textureTopLeft=newVector2(0.0f,0.0f); 
  43. Vector2textureTopRight=newVector2(1.0f,0.0f); 
  45. Vector2textureBottomLeft=newVector2(0.0f,1.0f); 
  47. Vector2textureBottomRight=newVector2(1.0f,1.0f); 
  49. Vector3frontNormal=newVector3(0.0f,0.0f,1.0f); 
  51. Vector3backNormal=newVector3(0.0f,0.0f,-1.0f); 
  53. Vector3topNormal=newVector3(0.0f,1.0f,0.0f); 
  55. Vector3bottomNormal=newVector3(0.0f,-1.0f,0.0f); 
  57. Vector3leftNormal=newVector3(-1.0f,0.0f,0.0f); 
  59. Vector3rightNormal=newVector3(1.0f,0.0f,0.0f); 
  61. //Frontface. 
  63. cubeVertices[0]= 
  65. newVertexPositionNormalTexture( 
  67. topLeftFront,frontNormal,textureTopLeft); 
  69. cubeVertices[1]= 
  71. newVertexPositionNormalTexture( 
  73. bottomLeftFront,frontNormal,textureBottomLeft); 
  75. cubeVertices[2]= 
  77. newVertexPositionNormalTexture( 
  79. topRightFront,frontNormal,textureTopRight); 
  81. cubeVertices[3]= 
  83. newVertexPositionNormalTexture( 
  85. bottomLeftFront,frontNormal,textureBottomLeft); 
  87. cubeVertices[4]= 
  89. newVertexPositionNormalTexture( 
  91. bottomRightFront,frontNormal,textureBottomRight); 
  93. cubeVertices[5]= 
  95. newVertexPositionNormalTexture( 
  97. topRightFront,frontNormal,textureTopRight); 
  99. //Backface. 
  101. cubeVertices[6]= 
  103. newVertexPositionNormalTexture( 
  105. topLeftBack,backNormal,textureTopRight); 
  107. cubeVertices[7]= 
  109. newVertexPositionNormalTexture( 
  111. topRightBack,backNormal,textureTopLeft); 
  113. cubeVertices[8]= 
  115. newVertexPositionNormalTexture( 
  117. bottomLeftBack,backNormal,textureBottomRight); 
  119. cubeVertices[9]= 
  121. newVertexPositionNormalTexture( 
  123. bottomLeftBack,backNormal,textureBottomRight); 
  125. cubeVertices[10]= 
  127. newVertexPositionNormalTexture( 
  129. topRightBack,backNormal,textureTopLeft); 
  131. cubeVertices[11]= 
  133. newVertexPositionNormalTexture( 
  135. bottomRightBack,backNormal,textureBottomLeft); 
  137. //Topface. 
  139. cubeVertices[12]= 
  141. newVertexPositionNormalTexture( 
  143. topLeftFront,topNormal,textureBottomLeft); 
  145. cubeVertices[13]= 
  147. newVertexPositionNormalTexture( 
  149. topRightBack,topNormal,textureTopRight); 
  151. cubeVertices[14]= 
  153. newVertexPositionNormalTexture( 
  155. topLeftBack,topNormal,textureTopLeft); 
  157. cubeVertices[15]= 
  159. newVertexPositionNormalTexture( 
  161. topLeftFront,topNormal,textureBottomLeft); 
  163. cubeVertices[16]= 
  165. newVertexPositionNormalTexture( 
  167. topRightFront,topNormal,textureBottomRight); 
  169. cubeVertices[17]= 
  171. newVertexPositionNormalTexture( 
  173. topRightBack,topNormal,textureTopRight); 
  175. //Bottomface. 
  177. cubeVertices[18]= 
  179. newVertexPositionNormalTexture( 
  181. bottomLeftFront,bottomNormal,
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