[Slimdx]顶点和索引缓冲，绘制了2个分离的三角形

 1 using System;  2 using System.Drawing;  3 using RGeos.SlimScene.Core;  4 using SlimDX;  5 using SlimDX.Direct3D9;  6 using CustomVertex;  7 using RGeos.AppScene.Renderable;  8  9 namespace RGeos.SlimScene.Renderable  10 {  11 /// 
  12 /// 定义网格顶点和索引缓冲  13 ///   14 public class BoxMesh : RenderableObject  15  {  16 private CustomVertex.PositionColored[] vertices;//定义网格顶点  17 private short[] indices;//定义网格中三角形索引  18 private int modelVertCount = 0;  19 private int modelFaceCount = 0;  20 private VertexBuffer vertBuffer;  21 private IndexBuffer indBuffer;  22  23 public BoxMesh(string name)  24 : base(name)  25  {  26 this.isSelectable = true;  27  }  28 private void ComputeVertexs()  29  {  30 vertices = new CustomVertex.PositionColored[6];  31  32 Vector3 pt = new Vector3();  33 pt.X = 0;  34 pt.Y = 0;  35 pt.Z = 0;  36 vertices[0].Position = pt;  37 vertices[0].Color = Color.Red.ToArgb();  38  39 Vector3 pt1 = new Vector3();  40 pt1.X = 0;  41 pt1.Y = 10;  42 pt1.Z = 0;  43 vertices[1].Position = pt1;  44 vertices[1].Color = Color.Red.ToArgb();  45  46 Vector3 pt2 = new Vector3();  47 pt2.X = 0;  48 pt2.Y = 10;  49 pt2.Z = 10;  50 vertices[2].Position = pt2;  51 vertices[2].Color = Color.Red.ToArgb();  52  53 Vector3 pt3 = new Vector3();  54 pt3.X = 0;  55 pt3.Y = 20;  56 pt3.Z = 20;  57 vertices[3].Position = pt3;  58 vertices[3].Color = Color.Blue.ToArgb();  59  60 Vector3 pt4 = new Vector3();  61 pt4.X = 0;  62 pt4.Y = 20;  63 pt4.Z = 0;  64 vertices[4].Position = pt4;  65 vertices[4].Color = Color.Blue.ToArgb();  66  67 Vector3 pt5 = new Vector3();  68 pt5.X = 20;  69 pt5.Y = 0;  70 pt5.Z = 0;  71 vertices[5].Position = pt5;  72 vertices[5].Color = Color.Blue.ToArgb();  73  }  74  75 /// 
  76 /// 计算索引  77 ///   78 private void ComputeIndices()  79  {  80 indices = new short[6];  81  82 indices[0] = 0;  83 indices[1] = 1;  84 indices[2] = 2;  85 indices[3] = 3;  86 indices[4] = 4;  87 indices[5] = 5;  88  89  }  90  91 #region Renderable  92 /// 
  93 /// 初始化对象  94 ///   95 /// 渲染参数  96 public override void Initialize(DrawArgs drawArgs)  97  {  98 LoadTexturesAndMaterials(drawArgs);//导入贴图和材质   99 ComputeVertexs();//计算顶点 100 ComputeIndices();//计算索引 101 102 vertBuffer = BufferCreator.CreateVertexBuffer(drawArgs.Device, vertices); 103 indBuffer = BufferCreator.CreateIndexBuffer(drawArgs.Device, indices); 104 modelVertCount = vertices.Length; 105 modelFaceCount = indices.Length / 3; 106 this.isInitialized = true; 107  } 108 109 110 /// 
 111 /// 渲染对象 112 ///  113 /// 渲染参数 114 public override void Render(DrawArgs drawArgs) 115  { 116 if (!this.IsOn || !this.isInitialized) return; 117 //获取当前世界变换 118 Matrix world = drawArgs.Device.GetTransform(TransformState.World); 119 //获取当前顶点格式 120 VertexFormat format = drawArgs.Device.VertexFormat; 121 //获取当前的Z缓冲方式 122 int zEnable = drawArgs.Device.GetRenderState(RenderState.ZEnable); 123 //获取纹理状态 124 int colorOper = drawArgs.Device.GetTextureStageState(0, TextureStage.ColorOperation); 125 126 try 127  { 128 drawArgs.Device.SetTextureStageState(0, TextureStage.ColorOperation, TextureOperation.Modulate); 129 drawArgs.Device.SetTextureStageState(0, TextureStage.ColorArg1, TextureArgument.Texture); 130 drawArgs.Device.SetTextureStageState(0, TextureStage.ColorArg2, TextureArgument.Diffuse); 131 drawArgs.Device.SetTextureStageState(0, TextureStage.AlphaOperation, TextureOperation.Disable); 132 133 //设置顶点格式 134 drawArgs.Device.VertexFormat = CustomVertex.PositionColored.Format; 135 //设置Z缓冲 136 drawArgs.Device.SetRenderState(RenderState.ZEnable, 1); 137 //设置纹理状态，此处使用纹理 138 //drawArgs.Device.SetTexture(0, texture);//设置贴图  139 drawArgs.Device.SetStreamSource(0, vertBuffer, 0, PositionColored.SizeBytes); 140 drawArgs.Device.Indices = indBuffer; 141 drawArgs.Device.VertexFormat = PositionColored.Format; 142 drawArgs.Device.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, modelVertCount, 0, modelFaceCount); 143  } 144 catch (Exception e) 145  { 146  Utility.Log.Write(e); 147  } 148 finally 149  { 150  drawArgs.Device.SetTransform(TransformState.World, world); 151 drawArgs.Device.VertexFormat = format; 152  drawArgs.Device.SetRenderState(RenderState.ZEnable, zEnable); 153 drawArgs.Device.SetTextureStageState(0, TextureStage.ColorOperation, colorOper); 154  } 155 if (disposing) 156  { 157  Dispose(); 158 disposing = false; 159  } 160  } 161 public bool disposing = false; 162 /// 
 163 /// 更新对象 164 ///  165 /// 渲染参数 166 public override void Update(DrawArgs drawArgs) 167  { 168 if (!this.isInitialized) 169  { 170 this.Initialize(drawArgs); 171  } 172  } 173 174 /// 
 175 /// 执行选择操作 176 ///  177 /// 点选X坐标 178 /// 点选Y坐标 179 /// 渲染参数 180 ///  
      选择返回True,否则返回False 181 public bool PerformSelectionAction(int X, int Y, DrawArgs drawArgs) 182  { 183 return false; 184  } 185 186 187 /// 
 188 /// 释放对象 189 ///  190 public override void Dispose() 191  { 192 this.isInitialized = false; 193 //base.Dispose(); 194  } 195 #endregion 196 197 private void LoadTexturesAndMaterials(DrawArgs drawArgs)//导入贴图和材质  198  { 199 200  } 201 202 203 public override bool PerformSelectionAction(DrawArgs drawArgs) 204  { 205 bool flag = PerformSelectionAction(DrawArgs.LastMousePosition.X, DrawArgs.LastMousePosition.Y, drawArgs); 206 return flag; 207  } 208 209  } 210 }

1  public static VertexBuffer CreateVertexBuffer(Device device, PositionColored[] vertices)
2         {
3             VertexBuffer vertexBuffer = new VertexBuffer(device, vertices.Length * CustomVertex.PositionColored.SizeBytes, Usage.Dynamic | Usage.WriteOnly, CustomVertex.PositionColored.Format, Pool.Default);
4             DataStream vs = vertexBuffer.Lock(0, vertices.Length * CustomVertex.PositionColored.SizeBytes, LockFlags.None);
5             vs.WriteRange(vertices);
6             vertexBuffer.Unlock();
7             vs.Dispose();
8             return vertexBuffer;
9         }

1  public static IndexBuffer CreateIndexBuffer(Device device, short[] indicesData)
2         {
3             IndexBuffer indexBuffer = new IndexBuffer(device, 16 * indicesData.Length, Usage.WriteOnly, Pool.Default, true);
4             DataStream ds = indexBuffer.Lock(0, 16 * indicesData.Length, LockFlags.None);
5             ds.WriteRange(indicesData);
6             indexBuffer.Unlock();
7             ds.Dispose();
8             return indexBuffer;
9         }