怎么在同一视图现实两个OPENGL小动画

Question

我想做一个小动画,一部分是一个圆柱体,其绕自身的轴线旋转.
另外一部分是一个类似机械手臂的东西.该手臂可以绕其一端
旋转,也可以平移.
   我这么做的
 { SetTimerOn();
 plPushMatrix();
   glRotatef(RotateAngle,0,0,1);

DrawPipe();
  plPushMatrix();
   Drawtoolmove();
   glPopMatrix();
glPopMatrix(); 
}
drawtoomove()
{
glPushMatrix();
glRotatef(dC,0,1,0);
  
glTranslatef(dx,0,dz);
 glPopMatrix();
Drawtool(x0, y0,z0,x0,y0);
 }
但是一运行 就死机,希望大家帮忙看看 谢谢

Answer 1

其中的一个glPopMatrix()
在drawpips()后面  

Answer 2

plPushMatrix();
为glPushMatrix();笔误

Answer 3

CMyJobView::SetTimerOn()
{ 
SetTimer(1,10,NULL);}
void CMyJobView::OnTimer(UINT nIDEvent) 
{
 CView::OnTimer(nIDEvent);
 switch(nIDEvent)
 {case 0:
  break;
 case 1:
   RotateAngle+=10;
  break;
 default:
  {}
 }
 if(RotateAngle>360)
 {KillTimer(1);
 }
 InvalidateRect(NULL,FALSE);
}

Answer 4

SetTimer(1,10,NULL);
改成
SetTimer(1,1000,NULL);

Answer 5

drawtoomove()
{
    glPushMatrix();
    glRotatef(dC,0,1,0);
  
   glTranslatef(dx,0,dz);
    Drawtool(x0, y0,z0,x0,y0);
    glPopMatrix(); }
该函数先作平移，后旋转，opengl矩阵运算是从后往前；
因为你是部分程序，死机有很多原因，从这儿也看不出来。

Answer 6

其实我的源程序时这样的://整体运动的函数{
 SetTimerOn();
 glPushMatrix();
 glRotatef(RotateAngle,0,0,1);
      Draw2PipesNodeTool(); 
         glPopMatrix();
         glPushMatrix();

   CalSpeed(4*y0);//计算移动速度 速度存在Speed.txt中
  FILE  *PSpeed;
     PSpeed=fopen("Speed.txt","r");  
 
 if(PSpeed==NULL)
 {
 MessageBox("打开速度文件夹出错,请查看输入数据"); }
 else
 {
  while(!feof(PSpeed))
 {  fscanf(PSpeed,"%lf %lf %lf",&dC,&dx,&dz);
      toolMove( dC, dx, dz);
}
 }
 
fclose(PSpeed);
   glPopMatrix(); }
//手臂的运动函数
toolMove( dC, dx, dz);
{ 
glPushMatrix();
glRotatef(dC,0,1,0);
  
glTranslatef(dx,0,dz);
 
Drawtool(y0,x0, z0,x0,y0);//画手臂
glPopMatrix();
}

Answer 7

你的程序逻辑思路比较乱，设置时间器怎么能跟绘图放在一个函数里！绘图功能应该是放在onDraw函数里，应该是响应时间器产生的窗口刷新消息。

Answer 8

while(!feof(PSpeed))
 {  fscanf(PSpeed,"%lf %lf %lf",&dC,&dx,&dz);
      toolMove( dC, dx, dz);
}
 }
一直在写文件，造成了死循环

Answer 9

应该是文件读的时候才用到feof(PSpeed)，你写一个文件还能找到文件尾吗？

Answer 10

读文件只影响速度，你的程序还死机吗？
帖出你的ondraw函数的程序。

Answer 11

应该是文件读的时候才用到feof(PSpeed)，你写一个文件还能找到文件尾吗？//////////////////////////////////////////////////////////////////所以说就是你在寻找文件尾的时候，找不到，所以循环无法结束呀！！！！
你去掉循环试一下。

Answer 12

还是死机.
drawtool(double x, double y, double z,double c,double l)
{// glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
   //设置变量
   double  Normal[3];
   double a[1600],b[1600];
   double m=0;
   
   const double pi=3.1415926;   int i=0; 
  //做手臂的上下面需要的点
   for(m=0;m<=2*pi;m=m+pi/500)
   { a[i]=l*cos(m)/8;
     b[i]=l*sin(m)/8;
  i=i+1; 
   }
  //做手臂  该手臂由三部分组成
   while(i>0)
   {  double   point3d1[]= {x ,y ,z }; 
      double   point3d2[]={x+l/2 ,y+b[i],z+a[i]}; 
  double   point3d3[]={x+l/2,y+b[i+1],z+a[i+1]}; 
  double   point3d4[]={x+4*l/2,y+b[i],z+a[i]};
  double   point3d5[]={x+4*l/2,y+b[i+1],z+a[i+1]};
  double   point3d6[]={x+4*l/2 ,y,z };
//部分一
     CalculateNormal(point3d1 ,point3d2 ,point3d3 ,Normal );//计算法向量
     glColor3ub(200,0,255);  
            glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                     glBegin(GL_TRIANGLE_FAN);
                  glNormal3dv(Normal );
                  glVertex3d(x ,y ,z);
                  glVertex3d(x+l/2 ,y+b[i],z+a[i]);
                  glVertex3d (x+l/2,y+b[i+1],z+a[i+1]);
  glEnd(); 
// 部分二
CalculateNormal(point3d2 ,point3d4 ,point3d3 ,Normal );
            glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                     glBegin(GL_TRIANGLE_FAN);
                  glNormal3dv(Normal );
                  glVertex3d(x+l/2 ,y+b[i],z+a[i]);
                  glVertex3d(x+4*l/2,y+b[i],z+a[i]);
                  glVertex3d (x+l/2,y+b[i+1],z+a[i+1]);
  glEnd();  
CalculateNormal(point3d2 ,point3d5 ,point3d4 ,Normal );
            glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                     glBegin(GL_TRIANGLE_FAN);
                  glNormal3dv(Normal );
                  glVertex3d(x+l/2 ,y+b[i],z+a[i]);
                  glVertex3d(x+4*l/2,y+b[i+1],z+a[i+1]);
                  glVertex3d (x+4*l/2,y+b[i],z+a[i]);
  glEnd();    
 //的三部分
 CalculateNormal(point3d4 ,point3d5 ,point3d6 ,Normal );
         glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
              glBegin(GL_TRIANGLE_FAN);
              glNormal3dv(Normal );
              glVertex3d(x+4*l/2,y+b[i],z+a[i]);
              glVertex3d(x+4*l/2,y+b[i+1],z+a[i+1]);
              glVertex3d (x+4*l/2 ,y,z);
  glEnd(); 
              
  i=i-1;
  
   }
      glFlush(); 
}
Draw2PipesNodeTool(); 
{
  double Normal[3];
   double x[10000],y[10000] ,z[10000];
 
   double xg[10000],yg[10000] ,zg[10000];
 
   
  const  double pi=3.1415926;  
  FILE *pI, *pG;
      int i=0;//设置参数 控制循环变量
 
   pI=fopen("Intersection.txt","r");//读取文件数据作图
    pG=fopen("Groove.txt","r"); 
// 如果不能打开文件   退出程序  if( pIntersection==NULL||pGroove==NULL)
  { MessageBox("不能打开文件"); exit(1); }            //从文件中读取数据 并存入到 数组中
     
    
while((!feof(pIntersection))&&(!feof(pGroove)))
{
 
       fscanf(pIntersection,"%lf %lf %lf %lf %lf %lf  ",&x[i],&y[i],&z[i], &x[i+1],&y[i+1],&z[i+1]);
       fscanf(pGroove,"%lf %lf   %lf %lf %lf %lf  ",
   &xg[i],&yg[i] ,&zg[i],   &xg[i+1],&yg[i+1],&zg[i+1]   );
        q=max(max(x[i],y[i]),z[i]);     
      
 
   i=i+1;
}
 fclose(pIntersection); 
 
   fclose(pGroove);     i=i-1;
  
 for(i;i>0;i=i-1)
 {  
       

            double   point3d1[]= {x[i],y[i],z[i]}; 
       double   point3d3[]={x[i+1],y[i+1],z[i+1]};       double   point3d2[]={x[i],y[i],4*q}; 
        double point3d4[]={x[i+1],y[i+1],4*q};
 
 
       double point3dg1[]={xg[i],yg[i],zg[i]};       double   point3dg3[]={xg[i+1],yg[i+1],zg[i+1] };        double   point3dg2[]={xg[i],yg[i],4*q};  
       double point3dg4[]={xg[i+1],yg[i+1],4*q};   //做整个柱体
     
   { 
         glColor3ub(125,125,125);
      CalculateNormal(point3d1 ,point3d2 ,point3d3 ,Normal );
            glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                     glBegin(GL_TRIANGLE_FAN);
                  glNormal3dv(Normal );
                  glVertex3d(x[i] ,y[i] ,z[i] );
                  glVertex3d(x[i]  ,y[i]  ,4*q );
                  glVertex3d (x[i+1],y[i+1],z[i+1]);
                        glEnd();
          CalculateNormal(point3d3 ,point3d2 ,point3d4 ,Normal );
                  glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                       glBegin(GL_TRIANGLE_FAN);
                    glNormal3dv(Normal);
                    glVertex3d(x[i+1],y[i+1],z[i+1]);
                         glVertex3d(x[i] ,y[i] ,4*q );
                             glVertex3d (x[i+1],y[i+1],4*q);
                             glEnd();  
   //画出圆管外壁
       CalculateNormal(point3dg3 ,point3dg2 ,point3dg4 ,Normal );
                  glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                  glBegin(GL_TRIANGLE_FAN);
                glNormal3dv(Normal);
                glVertex3d(xg[i],yg[i],zg[i]);
               glVertex3d(xg[i] ,yg[i] ,4*q);
                 glVertex3d(xg[i+1],yg[i+1],zg[i+1]);
                                     glEnd(); 
     CalculateNormal(point3dg1 ,point3dg2 ,point3dg3 ,Normal);
                     glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                                      glBegin(GL_TRIANGLE_FAN);
                          glNormal3dv(Normal );
                       glVertex3d(xg[i],yg[i],4*q);
                          glVertex3d(xg[i+1],yg[i+1],4*q);
                        glVertex3d(xg[i+1],yg[i+1],zg[i+1]);
glEnd();    
  
   }
//一段 口面
 if(drawgrooveloop)
 {  glColor3ub(200,200,200);
     CalculateNormal(point3d1 ,point3dg1 ,point3d3 ,Normal );
                glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                     glBegin(GL_TRIANGLE_FAN);
                     glNormal3dv(Normal );
                     glVertex3d(x[i],y[i],z[i]);
                     glVertex3d(xg[i],yg[i],zg[i] );
                     glVertex3d (x[i+1],y[i+1],z[i+1]);
                                  glEnd();        CalculateNormal(point3dg1 ,point3dg3 ,point3d3 ,Normal );
                     glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                           glBegin(GL_TRIANGLE_FAN);
                              glNormal3dv(Normal );
                              glVertex3d(xg[i],yg[i],zg[i]);
                              glVertex3d(xg[i+1] ,yg[i+1] ,zg[i+1]);
                              glVertex3d(x[i+1],y[i+1],z[i+1]);
  glEnd();   
  glColor3ub(200,200,200);
     CalculateNormal(point3d1 ,point3dg1 ,point3d3 ,Normal );
                glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                     glBegin(GL_TRIANGLE_FAN);
                     glNormal3dv(Normal );
                     glVertex3d(x[i],y[i],4*q);
                     glVertex3d(xg[i],yg[i],4*q );
                     glVertex3d (x[i+1],y[i+1],4*q);
                                  glEnd();        CalculateNormal(point3dg1 ,point3dg3 ,point3d3 ,Normal );
                     glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
                           glBegin(GL_TRIANGLE_FAN);
                              glNormal3dv(Normal );
                              glVertex3d(xg[i],yg[i],4*q);
                              glVertex3d(xg[i+1] ,yg[i+1] ,4*q);
                              glVertex3d(x[i+1],y[i+1],4*q);
  glEnd();   }
    
 
           }
   
  x0=xg[0];
  y0=yg[0];
  z0=zg[0];
  
  
   
    }
}

Answer 13

fscanf(PSpeed,"%lf %lf %lf",&dC,&dx,&dz);
可能是这个地方出错，查查看

Answer 14

再重复一遍,一定要试试!!!SetTimer(1,10,NULL);
改成
SetTimer(1,1000,NULL);

Answer 15

程序也比较长，我一时也看不出头序，不过有几点：
1、你读文件应该放在onDraw外面，读进数组里面；
2、你读的文件好象是文本文件，应该这样：
pI=fopen("Intersection.txt","rt");//读取文件数据作图
....
fscanf(PSpeed,"%lf %lf %lf\n",&dC,&dx,&dz);
3、一定要单步跟踪调试，以找出错误所在。

Answer 16

fscanf(PSpeed,"%lf %lf %lf",&dC,&dx,&dz);读文件的时候要与写文件的时候格式一致
否则出错看看你文档的格式

Answer 17

格式是一致的.
还有 我单步 调试的时候, 出现这样的提示 symbol "this" not fond, 但是程序还是能运行.
这个"this"是不是其他地方的错误?
 还有 好像我的 killsettimmer(1) 没有起作用

Answer 18

“symbol "this" not fond”，没有关系，表示dll是Release版，不含调试信息；
那你好好找找。

Answer 19

“1、你读文件应该放在onDraw外面，读进数组里面；”
数据是不是太大了？

Answer 20

谢谢 syy64(太平洋)  大哥,程序已经收到,但是 在我这里还是运行不起来.
  在你的机器上可以运行么 ?

Answer 21

我知道我最大的错误了, 我的机器手臂的运动根本不是运动,没有利用SetTimer()
只是简单的画图了,我现在就应该把S`ETTIMER()gen跟画机器手臂 连起来.

Answer 22

还有我这个程序为什么REASE版本 不能运行呢? 根本就不能运行.