コード例 #1
0
void motion(int x, int y)
{
    OSG::Real32 w = clientWindow->getWidth(), h = clientWindow->getHeight();


    OSG::Real32 a = -2. * ( lastx / w - .5 ),
                b = -2. * ( .5 - lasty / h ),
                c = -2. * ( x / w - .5 ),
                d = -2. * ( .5 - y / h );

    if ( mouseb & ( 1 << GLUT_LEFT_BUTTON ) )
    {
        tball.updateRotation( a, b, c, d );
    }
    else if ( mouseb & ( 1 << GLUT_MIDDLE_BUTTON ) )
    {
        tball.updatePosition( a, b, c, d );
    }
    else if ( mouseb & ( 1 << GLUT_RIGHT_BUTTON ) )
    {
        tball.updatePositionNeg( a, b, c, d );
    }
    lastx = x;
    lasty = y;
	glutPostRedisplay();
}
コード例 #2
0
/*! Simple show text function
 */
void displayInfo(int x, int y)
{
  int len, i;
#ifdef WIN32
#ifdef OSG_WIN32_CL
  void *font = (void *) 2;
#else
  void *font = 2;
#endif
#else
#ifdef OSG_DEBUG_OLD_C_CASTS
  void *font = glutBitmap9By15;
#else
  void *font = GLUT_BITMAP_9_BY_15;
#endif
#endif

  char text[1024];
  sprintf(text,
          "FPS:        %12.1f\n"
          "Positions:  %12u\n"
          "Triangles:  %12u\n"
          "Geometries: %12u",
          1.0/frame_time,
          sum_positions,
          sum_triangles,
          sum_geometries);

  glPushAttrib(GL_ALL_ATTRIB_BITS);
  glDisable(GL_LIGHTING);
  glEnable(GL_COLOR_MATERIAL);
  glPushMatrix();
  glLoadIdentity();
  glMatrixMode(GL_PROJECTION);
  glPushMatrix();
  glLoadIdentity();
  gluOrtho2D(0,clientWindow->getWidth(),0,clientWindow->getHeight());
  glDisable(GL_DEPTH_TEST);  
  glEnable(GL_BLEND);
  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

  int x1=x-5;
  int x2=x1+24*9+10;
  int y1=y+14;
  int y2=y1-4*20;
  glBegin(GL_QUADS);
  glColor4f(.1f, .1f, .7f, .5f);
  glVertex2i(x1,y1);
  glVertex2i(x1,y2);
  glVertex2i(x2,y2);
  glVertex2i(x2,y1);
  glEnd();
  glBegin(GL_LINE_LOOP);
  glColor3f(1.0, 1.0, 0.0);
  glVertex2i(x1,y1);
  glVertex2i(x1,y2);
  glVertex2i(x2,y2);
  glVertex2i(x2,y1);
  glEnd();

  glColor3f(1.0, 1.0, 0.0);
  glRasterPos2f(x, y);
  len = int(strlen(text));
  for (i = 0; i < len; i++) {
      if(text[i] == '\n')
      {
          y-=20;
          glRasterPos2f(x, y);
      }
      else
          glutBitmapCharacter(font, text[i]);
  }
  glPopMatrix();
  glMatrixMode(GL_MODELVIEW);
  glPopMatrix();
  glPopAttrib();
}