CTrackBall() {
radius = 106;
saferadius = radius -1;
reset();
touch1.clear();
touch2.clear();
nFingers = 0;
}
inline void processTouches(int command, int x, int y) {
switch (command) {
case CMD_TOUCH_END2:
touch2.clear();
nFingers--;
break;
case CMD_TOUCH_START2:
touch2.x = x; touch2.y = y;
oldlen = touch2.subtract(touch2, touch1).length();
m_spinning = false;
nFingers++;
break;
case CMD_TOUCHMOVE2:
touch2.x = x; touch2.y = y;
m_spinning = false;
break;
case CMD_TOUCHMOVE:
{
if (m_spinning && !isPinching()) {
start = MapToSphere(m_fingerStart);
end = MapToSphere(vec2(x,y));
delta = CQuaternion::CreateFromVectors(start, end);
m_orientation = delta.Rotated(m_prevOrientation);
}
}
break;
case CMD_TOUCH_START:
touch1.x = x; touch1.y = y;
onTouchDown(x,y);
nFingers++;
break;
case CMD_TOUCH_END:
touch1.x = x; touch1.y = y;
onTouchUp(x,y);
touch1.clear();
touch2.clear();
m_spinning = false;
nFingers--;
break;
case CMD_SCREENSIZE:
touch1.x = x; touch1.y = y;
onScreenSize(x,y);
break;
}
}
void reset() {
m_orientation.clear();
m_prevOrientation.clear();
touch1.clear();
touch2.clear();
}