コード例 #1
0
void display(void){
    glClear(GL_COLOR_BUFFER_BIT);

    if(leftFirst){
        drawLeftTriangle();
        drawRightTriangle();
    } else {
        drawRightTriangle();
        drawLeftTriangle();
    }

    glFlush();
}
コード例 #2
0
ファイル: qblending.cpp プロジェクト: svbt/opengldemo
void qblending::paintGL()
{
    glClear(GL_COLOR_BUFFER_BIT);
    if (leftFirst) {
    drawLeftTriangle();
    drawRightTriangle();
    }
    else {
    drawRightTriangle();
    drawLeftTriangle();
    }
    glFlush();
}
コード例 #3
0
ファイル: alpha.c プロジェクト: thisisadu/vincent-opengles1.1
void display(UGWindow uwin)
{
   glClear(GL_COLOR_BUFFER_BIT);

   if (leftFirst) {
      drawLeftTriangle();
      drawRightTriangle();
   }
   else {
      drawRightTriangle();
      drawLeftTriangle();
   }

   glFlush();
   ugSwapBuffers(uwin);
}
コード例 #4
0
ファイル: tri-z.c プロジェクト: astrofimov/vgallium
void display(void)
{
    printf("GL_CLEAR_DEPTH = %f  GL_DEPTH_FUNC = %s\n",
           clearVal, funcs[curFunc].str);
    glClearDepth(clearVal);
    glDepthFunc(funcs[curFunc].func);

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    if (leftFirst) {
        drawLeftTriangle();
        drawRightTriangle();
    }
    else {
        drawRightTriangle();
        drawLeftTriangle();
    }

    glFlush();
}
コード例 #5
0
ファイル: alpha.c プロジェクト: insidepower/eclipseandroid
void display(void)
{
   glClear(GL_COLOR_BUFFER_BIT);
   glClearColor(0.5f, 0.5f, 0.5f, 1.0f); // Clear the background of our window to red

   if (rotateY){
	   rotateY = !rotateY;
	   glRotatef(yRotationAngle, 0.0f, 1.0f, 0.0f); // Rotate our object around the y axis
	   yRotationAngle += 0.05f;

	   if (yRotationAngle > 360.0f) // If we have rotated beyond 360 degrees (a full rotation)
		   yRotationAngle -= 360.0f; // Subtract 360 degrees off of our rotation
   }

   if (translateZ){
	   translateZ = !translateZ;
	   glLoadIdentity(); // Load the Identity Matrix to reset our drawing locations
	   glTranslatef(zLocation, 0.0f, 0.0f); // Translate our object along the y axis
	   zLocation += 0.05f;

	   if (zLocation > 1.0f){ // If we have rotated beyond 360 degrees (a full rotation)
		   zLocation = 0.0f;
		   glLoadIdentity(); // Load the Identity Matrix to reset our drawing locations
	   	   glTranslatef(0.0f, 0.0f, 0.0f); // Translate our object along the y axis
	   }
   }

   if (leftFirst) {
      drawLeftTriangle();
      drawRightTriangle();
   }
   else {
      drawRightTriangle();
      drawLeftTriangle();
   }


   glFlush();
}
コード例 #6
0
ファイル: lowlevel.c プロジェクト: bradens/uvc
/* Main triangle drawing function */
void endTriangle() {

  vertex* b; vertex* t; vertex* m;
  int flag = 0x0; /* bit flags for tests */ 
  int A,B,C; /* implcit line coefficients */
  
  /* First, figure out which vertex should be 
     b (bottom vertex), t (top vertex) and m (middle vertex) */

  if (v[0]->y < v[1]->y) flag = 0x1;
  flag <<= 1; /* shift over one bit */

  if (v[1]->y < v[2]->y) flag |= 0x1;
  flag <<= 1; 

  if (v[2]->y < v[0]->y) flag |= 0x1;

  switch (flag) {

  case 0x1: /* 001 */ 
    t = v[0]; m = v[1]; b = v[2];
    break;

  case 0x2: /* 010 */
    m = v[0]; b = v[1]; t = v[2]; 
    break;

  case 0x3: /* 011 */ 
    t = v[0]; b = v[1]; m = v[2];
    break;

  case 0x4: /* 100 */
    b = v[0]; t = v[1]; m = v[2];
    break;

  case 0x5: /* 101 */
    m = v[0]; t = v[1]; b = v[2]; 
    break;

  case 0x6: /* 110 */
    b = v[0]; m = v[1]; t = v[2]; 
    break;

  default: 
    printf("Bad triangle! \n"); /* only gets here if all vertices equal */
    return;
  }

  /* Now test to see if m is right or left of line bt */
  /* Use implicit line equation */
  A = b->y  -  t->y;
  B = t->x  -  b->x;
  C = b->x * t->y  -  t->x * b->y;

  if (A*m->x + B*m->y + C > 0) 
    drawLeftTriangle(b,t,m);
  else 
    drawRightTriangle(b,t,m);

  free(v[0]);
  free(v[1]);
  free(v[2]);
}