[3D]绘制XYZ小坐标轴

源码：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using SlimDX;
 using RGeos.SlimScene.Core;
 using SlimDX.Direct3D9;
 using System.Drawing;

 namespace RGeos.SlimScene.Renderable
 {
     public class Axis :  IRenderable
     {
         public bool IsOn = true;
         public bool IsInitialize = false;
         public Mesh mMeshArrow = null;
         public Mesh mMeshStick = null;
         private Material material;//定义材质变量
         private Material materialStick;//定义材质变量
         public void Initialize(DrawArgs drawArgs)
         {
             if (IsOn && !IsInitialize)
             {
                 mMeshArrow = Mesh.CreateCylinder(drawArgs.Device, 1.5f, 0.0f, 5.0f, , );
                 mMeshStick = Mesh.CreateCylinder(drawArgs.Device, 0.5f, 0.5f, 10.0f, , );
                 LoadTexturesAndMaterials(drawArgs);
             }
             IsInitialize = true;
         }
         private void LoadTexturesAndMaterials(DrawArgs drawArgs)//导入贴图和材质
         {
             material = new Material();
             material.Diffuse = Color.Red;
             material.Ambient = Color.White;
             material.Specular = Color.Yellow;
             material.Power = 15.0F;

             materialStick = new Material();
             materialStick.Diffuse = Color.Yellow;
             materialStick.Ambient = Color.White;
             materialStick.Specular = Color.Yellow;
             materialStick.Power = 15.0F;
         }
         public void Update(DrawArgs drawArgs)
         {
             if (IsOn && !IsInitialize)
             {
                 Initialize(drawArgs);
             }
         }

         public void Render(DrawArgs drawArgs)
         {
             Matrix world = drawArgs.Device.GetTransform(TransformState.World);
             int currentColorOp = drawArgs.Device.GetTextureStageState(, TextureStage.ColorOperation);
             int lightCur = drawArgs.Device.GetRenderState(RenderState.Lighting);
             try
             {
                 drawArgs.Device.SetRenderState(RenderState.Lighting, true);
                 drawArgs.Device.EnableLight(, true);
                 AxisX(drawArgs);
                 AxisY(drawArgs);
                 AxisZ(drawArgs);

             }
             catch (Exception)
             {
             }
             finally
             {
                 drawArgs.Device.EnableLight(, false);
                 drawArgs.Device.SetTextureStageState(, TextureStage.ColorOperation, currentColorOp);
                 drawArgs.Device.SetTransform(TransformState.World, world);
                 drawArgs.Device.SetRenderState(RenderState.Lighting, lightCur);
             }

         }

         public void AxisX(DrawArgs drawArgs)
         {
             Light light = new Light();
             light.Type = LightType.Spot;
             light.Diffuse = Color.White;
             light.Direction = new Vector3(mPosition.X, mPosition.Y + , mPosition.Z + );
             drawArgs.Device.SetLight(, light);

             //drawArgs.Device.SetTextureStageState(0, TextureStage.ColorOperation, TextureOperation.SelectArg1);
             drawArgs.Device.SetRenderState(RenderState.Ambient, Color.FromArgb(Color.Red.ToArgb()).ToArgb());

             drawArgs.Device.Material = material;

             Matrix MoveModel = Matrix.Translation(new Vector3(12.5f, 0f, 0f));
             MoveModel = Matrix.RotationY((float)Math.PI / ) * MoveModel;//右乘
             Matrix tmp = Matrix.RotationZ((float)mAngle);
             tmp = tmp * Matrix.Translation(mPosition.X, mPosition.Y, mPosition.Z);
             tmp = MoveModel * tmp;
             drawArgs.Device.SetTransform(TransformState.World, tmp);
             //设置顶点格式
             mMeshArrow.DrawSubset();

             Light light2 = new Light();
             light2.Type = LightType.Directional;
             light2.Diffuse = Color.White;
             light.Direction = new Vector3(mPosition.X, mPosition.Y + , mPosition.Z + );
             drawArgs.Device.SetLight(, light2);

             drawArgs.Device.SetRenderState(RenderState.Ambient, Color.FromArgb(Color.Red.ToArgb()).ToArgb());

             drawArgs.Device.Material = materialStick;

             Matrix MoveModel2 = Matrix.Translation(new Vector3(, , ));
             MoveModel2 = Matrix.RotationY((float)Math.PI / ) * MoveModel2;
             Matrix tmp2 = Matrix.RotationZ((float)mAngle);
             tmp2 = tmp2 * Matrix.Translation(mPosition.X, mPosition.Y, mPosition.Z);
             tmp2 = MoveModel2 * tmp2;
             drawArgs.Device.SetTransform(TransformState.World, tmp2);
             mMeshStick.DrawSubset();
         }

         public void AxisY(DrawArgs drawArgs)
         {

             Light light = new Light();
             light.Type = LightType.Spot;
             light.Diffuse = Color.White;
             light.Direction = new Vector3(mPosition.X, mPosition.Y + , mPosition.Z + );
             drawArgs.Device.SetLight(, light);

             //drawArgs.Device.SetTextureStageState(0, TextureStage.ColorOperation, TextureOperation.SelectArg1);
             drawArgs.Device.SetRenderState(RenderState.Ambient, Color.FromArgb(Color.Green.ToArgb()).ToArgb());

             drawArgs.Device.Material = material;

             Matrix MoveModel = Matrix.Translation(new Vector3(0f, 12.5f, 0f));
             MoveModel = Matrix.RotationX((float)-Math.PI / ) * MoveModel;//右乘
             Matrix tmp = Matrix.RotationZ((float)mAngle);
             tmp = tmp * Matrix.Translation(mPosition.X, mPosition.Y, mPosition.Z);
             tmp = MoveModel * tmp;
             drawArgs.Device.SetTransform(TransformState.World, tmp);
             //设置顶点格式
             mMeshArrow.DrawSubset();

             Light light2 = new Light();
             light2.Type = LightType.Directional;
             light2.Diffuse = Color.White;
             light.Direction = new Vector3(mPosition.X, mPosition.Y + , mPosition.Z + );
             drawArgs.Device.SetLight(, light2);

             drawArgs.Device.SetRenderState(RenderState.Ambient, Color.FromArgb(Color.Green.ToArgb()).ToArgb());

             drawArgs.Device.Material = materialStick;

             Matrix MoveModel2 = Matrix.Translation(new Vector3(, , ));
             MoveModel2 = Matrix.RotationX((float)-Math.PI / ) * MoveModel2;
             Matrix tmp2 = Matrix.RotationZ((float)mAngle);
             tmp2 = tmp2 * Matrix.Translation(mPosition.X, mPosition.Y, mPosition.Z);
             tmp2 = MoveModel2 * tmp2;
             drawArgs.Device.SetTransform(TransformState.World, tmp2);
             mMeshStick.DrawSubset();
         }

         public void AxisZ(DrawArgs drawArgs)
         {

             Light light = new Light();
             light.Type = LightType.Spot;
             light.Diffuse = Color.White;
             light.Direction = new Vector3(mPosition.X, mPosition.Y + , mPosition.Z + );
             drawArgs.Device.SetLight(, light);

             //drawArgs.Device.SetTextureStageState(0, TextureStage.ColorOperation, TextureOperation.SelectArg1);
             drawArgs.Device.SetRenderState(RenderState.Ambient, Color.FromArgb(Color.Blue.ToArgb()).ToArgb());

             drawArgs.Device.Material = material;

             Matrix MoveModel = Matrix.Translation(new Vector3(0f, 0f, 12.5f));
           //  MoveModel = Matrix.RotationX((float)Math.PI) * MoveModel;//右乘
             Matrix tmp = Matrix.RotationZ((float)mAngle);
             tmp = tmp * Matrix.Translation(mPosition.X, mPosition.Y, mPosition.Z);
             tmp = MoveModel * tmp;
             drawArgs.Device.SetTransform(TransformState.World, tmp);
             //设置顶点格式
             mMeshArrow.DrawSubset();

             Light light2 = new Light();
             light2.Type = LightType.Directional;
             light2.Diffuse = Color.White;
             light.Direction = new Vector3(mPosition.X, mPosition.Y + , mPosition.Z + );
             drawArgs.Device.SetLight(, light2);

             drawArgs.Device.SetRenderState(RenderState.Ambient, Color.FromArgb(Color.Blue.ToArgb()).ToArgb());

             drawArgs.Device.Material = materialStick;

             Matrix MoveModel2 = Matrix.Translation(new Vector3(, , ));
            // MoveModel2 = Matrix.RotationX((float)Math.PI) * MoveModel2;
             Matrix tmp2 = Matrix.RotationZ((float)mAngle);
             tmp2 = tmp2 * Matrix.Translation(mPosition.X, mPosition.Y, mPosition.Z);
             tmp2 = MoveModel2 * tmp2;
             drawArgs.Device.SetTransform(TransformState.World, tmp2);
             mMeshStick.DrawSubset();
         }

         public void Dispose()
         {
             if (mMeshArrow != null && !mMeshArrow.Disposed)
             {
                 mMeshArrow.Dispose();
                 mMeshArrow = null;
             }
             if (mMeshStick != null && !mMeshStick.Disposed)
             {
                 mMeshStick.Dispose();
                 mMeshStick = null;
             }
             IsInitialize = false;
         }

         public double mAngle
         {
             get;
             set;
         }

         public Vector3 mPosition
         {
             get;
             set;
         }

         public void SetTransform(Vector3 position)
         {
             mPosition = position;
         }

         public void SetRotateZ(double angle)
         {
             mAngle = angle;
         }
     }
 }

结果：