void Manipulator::update(TouchEvent &touch_event) {
unsigned char type = touch_event._event_type;
if((type & (1 << 6)) && (type & (1<<7))) {
if((type & 1) && (type & 2)){
// do nothing
}else if(type & 1){
rotateTrackball(touch_event._x1, touch_event._y1,_last_cord1._v[0], _last_cord1._v[1]);
}else if(type & 2){
rotateTrackball(touch_event._x2, touch_event._y2,_last_cord2._v[0], _last_cord2._v[1]);
}
}
updateLastPoint(touch_event);
}
void motion(int x, int y)
{
int dx, dy;
dx = x - ox;
dy = y - oy;
ox = x;
oy = y;
switch(trackballMode) {
case ROTATE:
rotateTrackball(dx, dy, xform.rotation);
break;
case SCALEX:
xform.scale[0] += (dx + dy) / 20.0f;
break;
case SCALEY:
xform.scale[1] += (dx + dy) / 20.0f;
break;
case SCALEZ:
xform.scale[2] += (dx + dy) / 20.0f;
break;
case TRANSLATEXY:
xform.translation[0] += dx / 20.0f;
xform.translation[1] -= dy / 20.0f;
break;
case TRANSLATEZ:
xform.translation[2] += (dx + dy) / 20.0f;
break;
}
glutPostRedisplay();
}