按鍵響應會導致影像停止移動

我有一個是基於Giawa教程數字一個OpenGL程序1-5.Basically我創建一個圖像，在屏幕上顯示出來，並使其旋轉。我想要完成的是添加鍵盤事件來更改圖像的某些參數。舉例來說，在我的代碼我想按F6，使圖像旋轉，速度快：按鍵響應會導致影像停止移動

using System; 
using Tao.FreeGlut; 
using OpenGL; 
using System; 
using System.Windows; 
using System.Windows.Forms; 

namespace OpenGLTutorial5 
{ 
    class Program 
    { 
     private static int width = 640, height = 480; 
     private static ShaderProgram program; 

     private static VBO<Vector3> top_pyramid, cube, bottom_pyramid; 
     private static VBO<Vector3> top_pyramidColor, cubeColor, bottom_pyramidColor; 
     private static VBO<int> top_pyramidElements, cubeElements, bottom_pyramidElements; 

     private static System.Diagnostics.Stopwatch watch; 
     private static float angle; 
     private static int rotate = 1; 

     static void Main(string[] args) 
     { 
      // create an OpenGL window 
      Glut.glutInit(); 
      Glut.glutInitDisplayMode(Glut.GLUT_DOUBLE | Glut.GLUT_DEPTH); 
      Glut.glutInitWindowSize(width, height); 
      Glut.glutCreateWindow("OpenGL Tutorial"); 

      // provide the Glut callbacks that are necessary for running this tutorial 
      Glut.glutIdleFunc(OnRenderFrame); 
      Glut.glutDisplayFunc(OnDisplay); 
      // Glut.glutKeyboardFunc(new Glut.KeyboardCallback(OnKeyPress)); 
      Glut.glutSpecialFunc(new Glut.SpecialCallback(OnKeyPress)); 
      Glut.glutCloseFunc(OnClose); 

      // enable depth testing to ensure correct z-ordering of our fragments 
      Gl.Enable(EnableCap.DepthTest); 

      // compile the shader program 
      program = new ShaderProgram(VertexShader, FragmentShader); 

      // set the view and projection matrix, which are static throughout this tutorial 
      program.Use(); 
      program["projection_matrix"].SetValue(Matrix4.CreatePerspectiveFieldOfView(0.45f, (float)width/height, 0.1f, 1000f)); 
      program["view_matrix"].SetValue(Matrix4.LookAt(new Vector3(10, 0, 10), Vector3.Zero, Vector3.Up)); 


      top_pyramid = new VBO<Vector3>(new Vector3[] 
      { 
       new Vector3(-1.5, 0, -0.5), new Vector3(-0.5, 1, -0.5), new Vector3(0, 0, -1.5), 
       new Vector3(-0.5, 1, -0.5), new Vector3(0.5, 1, -0.5), new Vector3(0, 0, -1.5), 
       new Vector3(0.5, 1, -0.5), new Vector3(1.5, 0, -0.5), new Vector3(0, 0, -1.5), 
       new Vector3(1.5, 0, -0.5), new Vector3(0.5, -1, -0.5), new Vector3(0, 0, -1.5), 
       new Vector3(0.5, -1, -0.5), new Vector3(-0.5, -1, -0.5), new Vector3(0, 0, -1.5), 
       new Vector3(-0.5, -1, -0.5), new Vector3(-1.5, 0, -0.5), new Vector3(0, 0, -1.5) 
      }); 

      cube = new VBO<Vector3>(new Vector3[] 
      { 
       new Vector3(-1.5, 0, -0.5), new Vector3(-0.5, 1, -0.5), new Vector3(-0.5, 1, 0.5), new Vector3(-1.5, 0, 0.5), 
       new Vector3(-0.5, 1, -0.5), new Vector3(0.5, 1, -0.5), new Vector3(0.5, 1, 0.5), new Vector3(-0.5, 1, 0.5), 
       new Vector3(0.5, 1, -0.5), new Vector3(1.5, 0, -0.5), new Vector3(1.5, 0, 0.5), new Vector3(0.5, 1, 0.5), 
       new Vector3(1.5, 0, -0.5), new Vector3(1.5, 0, 0.5), new Vector3(0.5, -1, 0.5), new Vector3(0.5, -1, -0.5), 
       new Vector3(0.5, -1, 0.5), new Vector3(0.5, -1, -0.5), new Vector3(-0.5, -1, -0.5), new Vector3(-0.5, -1, 0.5), 
       new Vector3(-0.5, -1, -0.5), new Vector3(-0.5, -1, 0.5), new Vector3(-1.5, 0, 0.5), new Vector3(-1.5, 0, -0.5) 
      }); 


      bottom_pyramid = new VBO<Vector3>(new Vector3[] 
      { 
       new Vector3(-1.5, 0, 0.5), new Vector3(-0.5, 1, 0.5), new Vector3(0, 0, 1.5), 
       new Vector3(-0.5, 1, 0.5), new Vector3(0.5, 1, 0.5), new Vector3(0, 0, 1.5), 
       new Vector3(0.5, 1, 0.5), new Vector3(1.5, 0, 0.5), new Vector3(0, 0, 1.5), 
       new Vector3(1.5, 0, 0.5), new Vector3(0.5, -1, 0.5), new Vector3(0, 0, 1.5), 
       new Vector3(0.5, -1, 0.5), new Vector3(-0.5, -1, 0.5), new Vector3(0, 0, 1.5), 
       new Vector3(-0.5, -1, 0.5), new Vector3(-1.5, 0, 0.5), new Vector3(0, 0, 1.5) 
      }); 

      top_pyramidColor = new VBO<Vector3>(new Vector3[] 
      { 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 0), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 0), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 0), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 0), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 0), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 0) 
      }); 

      cubeColor = new VBO<Vector3>(new Vector3[] 
      { 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 0, 1), new Vector3(0,0,1), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 0, 1), new Vector3(0,0,1), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 0, 1), new Vector3(0,0,1), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 0, 1), new Vector3(0,0,1), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 0, 1), new Vector3(0,0,1), 
       new Vector3(1, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 0, 1), new Vector3(0,0,1), 
      }); 

      bottom_pyramidColor = new VBO<Vector3>(new Vector3[] 
      { 
       new Vector3(0, 0, 1), new Vector3(0, 0, 1), new Vector3(1, 1, 0), 
       new Vector3(0, 0, 1), new Vector3(0, 0, 1), new Vector3(1, 1, 0), 
       new Vector3(0, 0, 1), new Vector3(0, 0, 1), new Vector3(1, 1, 0), 
       new Vector3(0, 0, 1), new Vector3(0, 0, 1), new Vector3(1, 1, 0), 
       new Vector3(0, 0, 1), new Vector3(0, 0, 1), new Vector3(1, 1, 0), 
       new Vector3(0, 0, 1), new Vector3(0, 0, 1), new Vector3(1, 1, 0) 
      }); 

      top_pyramidElements = new VBO<int>(new int[] { 
       0,1,2, 
       3,4,5, 
       6,7,8, 
       9,10,11, 
       12,13,14, 
       15,16,17}, BufferTarget.ElementArrayBuffer); 

      cubeElements = new VBO<int>(new int[]{ 
       0,1,2,3, 
       4,5,6,7, 
       8,9,10,11, 
       12,13,14,15, 
       16,17,18,19, 
       20,21,22,23}, BufferTarget.ElementArrayBuffer); 

      bottom_pyramidElements = new VBO<int>(new int[] { 
       0,1,2, 
       3,4,5, 
       6,7,8, 
       9,10,11, 
       12,13,14, 
       15,16,17}, BufferTarget.ElementArrayBuffer); 

      watch = System.Diagnostics.Stopwatch.StartNew(); 

      Glut.glutMainLoop(); 
     } 



     public static void OnKeyPress(int theKey, int x, int y) 
     { 
      switch (theKey) 
      { 
       case Glut.GLUT_KEY_F6: 
        { 
         rotate += 3; 
         Console.WriteLine("Hallo!"); 
         Console.ReadLine(); 
        } 
        break; 
      } 
      Glut.glutPostRedisplay(); 
     } 

     private static void OnClose() 
     { 
      top_pyramid.Dispose(); 
      top_pyramidColor.Dispose(); 
      top_pyramidElements.Dispose(); 

      program.DisposeChildren = true; 
      program.Dispose(); 
     } 

     private static void OnDisplay() 
     { 

     } 

     private static void OnRenderFrame() 
     { 
      // calculate how much time has elapsed since the last frame 
      watch.Stop(); 
      float deltaTime = (float)watch.ElapsedTicks/System.Diagnostics.Stopwatch.Frequency; 
      watch.Restart(); 

      // use the deltaTime to adjust the angle of the cube and pyramid 
      angle += deltaTime; 



      // set up the OpenGL viewport and clear both the color and depth bits 
      Gl.Viewport(0, 0, width, height); 
      Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit); 

      // use our shader program 
      Gl.UseProgram(program); 

      //top pyramid 
      program["model_matrix"].SetValue(Matrix4.CreateRotationY(angle * rotate) * Matrix4.CreateTranslation(new Vector3(0.0f, 0, 1))); 
      Gl.BindBufferToShaderAttribute(top_pyramid, program, "vertexPosition"); 
      Gl.BindBufferToShaderAttribute(top_pyramidColor, program, "vertexColor"); 
      Gl.BindBuffer(top_pyramidElements); 
      //top pyramid 
      Gl.DrawElements(BeginMode.Triangles, top_pyramidElements.Count, DrawElementsType.UnsignedInt, IntPtr.Zero); 

      //cubes 
      program["model_matrix"].SetValue(Matrix4.CreateRotationY(angle * rotate) * Matrix4.CreateTranslation(new Vector3(0.0f, 0, 1))); 
      Gl.BindBufferToShaderAttribute(cube, program, "vertexPosition"); 
      Gl.BindBufferToShaderAttribute(cubeColor, program, "vertexColor"); 
      Gl.BindBuffer(cubeElements); 
      //cubes 
      Gl.DrawElements(BeginMode.Quads, cubeElements.Count, DrawElementsType.UnsignedInt, IntPtr.Zero); 

      //bottom pyramid 
      program["model_matrix"].SetValue(Matrix4.CreateRotationY(angle * rotate) * Matrix4.CreateTranslation(new Vector3(0.0f, 0, 1))); 
      Gl.BindBufferToShaderAttribute(bottom_pyramid, program, "vertexPosition"); 
      Gl.BindBufferToShaderAttribute(bottom_pyramidColor, program, "vertexColor"); 
      Gl.BindBuffer(bottom_pyramidElements); 
      //top pyramid 
      Gl.DrawElements(BeginMode.Triangles, bottom_pyramidElements.Count, DrawElementsType.UnsignedInt, IntPtr.Zero); 

      Glut.glutSwapBuffers(); 
     } 

     public static string VertexShader = @" 
#version 130 

in vec3 vertexPosition; 
in vec3 vertexColor; 

out vec3 color; 

uniform mat4 projection_matrix; 
uniform mat4 view_matrix; 
uniform mat4 model_matrix; 

void main(void) 
{ 
    color = vertexColor; 
    gl_Position = projection_matrix * view_matrix * model_matrix * vec4(vertexPosition, 1); 
} 
"; 

     public static string FragmentShader = @" 
#version 130 

in vec3 color; 

out vec4 fragment; 

void main(void) 
{ 
    fragment = vec4(color, 1); 
} 
"; 
    } 
}

圖像顯示正常，但是當我做按F6的圖像停止在所有旋轉。有想法該怎麼解決這個嗎？

來源

2014-05-14 Code Vader

我懷疑你的問題無關用OpenGL。看你的處理程序F6鍵，它具有以下代碼：

rotate += 3; 
Console.WriteLine("Hallo!"); 
Console.ReadLine();

最後這些線路的等待你的標準輸入輸入文字。我相信它會阻止，直到你輸入一些東西。取出ReadLine()通話，看看是否解決了問題。

來源

2014-05-14 14:07:50

完成，完美的作品！謝謝：-） –

按鍵響應會導致影像停止移動

回答

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