/**
* Mouse active motion callback (when button is pressed)
*/
void MouseMotionCallback(int x, int y)
{
if (gPreviousMouseX >= 0 && gPreviousMouseY >= 0)
{
//compute delta
float deltaX = x-gPreviousMouseX;
float deltaY = y-gPreviousMouseY;
gPreviousMouseX = x;
gPreviousMouseY = y;
float zoomSensitivity = 0.2f;
float rotateSensitivity = 0.5f;
//orbit or zoom
if (gMouseButton == GLUT_LEFT_BUTTON)
{
AdjustCameraAzimuthBy(-deltaX*rotateSensitivity);
AdjustCameraElevationBy(-deltaY*rotateSensitivity);
} else if (gMouseButton == GLUT_RIGHT_BUTTON)
{
STVector3 zoom(0,0,deltaX);
AdjustCameraTranslationBy(zoom * zoomSensitivity);
}
} else
{
gPreviousMouseX = x;
gPreviousMouseY = y;
}
}
void SpecialKeyCallback(int key, int x, int y)
{
switch(key) {
case GLUT_KEY_LEFT:
AdjustCameraTranslationBy(STVector3(-0.2,0,0));
break;
case GLUT_KEY_RIGHT:
AdjustCameraTranslationBy(STVector3(0.2,0,0));
break;
case GLUT_KEY_DOWN:
AdjustCameraTranslationBy(STVector3(0,-0.2,0));
break;
case GLUT_KEY_UP:
AdjustCameraTranslationBy(STVector3(0,0.2,0));
break;
default:
break;
}
glutPostRedisplay();
}
