void controlLight()
{
// //The first
// if(screenTouches.Count==2&&lastScreenTouches.Count!=0)
// {}
if (screenTouches.Count == 2 && lastScreenTouches.Count == 2)
{
ScreenTouch lastTouch1 = lastScreenTouches [0];
ScreenTouch lastTouch2 = lastScreenTouches [1];
ScreenTouch touch1 = screenTouches [0];
ScreenTouch touch2 = screenTouches [1];
if (lastTouch1.getId() == screenTouches [1].getId())
{
touch1 = screenTouches [1];
touch2 = screenTouches [0];
}
float dis1 = Vector2.Distance(lastTouch1.getTouchPosition(), touch1.getTouchPosition());
float dis2 = Vector2.Distance(lastTouch2.getTouchPosition(), touch2.getTouchPosition());
float lastDis = Vector2.Distance(lastTouch1.getTouchPosition(), lastTouch2.getTouchPosition());
float dis = Vector2.Distance(touch1.getTouchPosition(), touch2.getTouchPosition());
float disVariance = dis - lastDis;
lightTheta += disVariance / 2;
Vector2 lastVec = new Vector2();
Vector2 vec = new Vector2();
if (dis1 > dis2)
{
lastVec = lastTouch1.getTouchPosition() - lastTouch2.getTouchPosition();
vec = touch1.getTouchPosition() - touch2.getTouchPosition();
}
if (dis1 < dis2)
{
lastVec = lastTouch2.getTouchPosition() - lastTouch1.getTouchPosition();
vec = touch2.getTouchPosition() - touch1.getTouchPosition();
}
lastVec.Normalize();
vec.Normalize();
float cross = lastVec.x * vec.y - lastVec.y * vec.x;
float alphaVariance = Mathf.Acos(Vector2.Dot(lastVec, vec));
if (cross > 0)
{
lightAlpha += alphaVariance;
}
if (cross < 0)
{
lightAlpha -= alphaVariance;
}
}
}
float CheckRotateAngle(ref bool rotate)
{
float rotateAngle = 0;
if (screenTouches.Count == 1 && lastScreenTouches.Count == 1)
{
ScreenTouch touch = (ScreenTouch)screenTouches [0];
ScreenTouch lastTouch = (ScreenTouch)lastScreenTouches [0];
if (touch.getId() == lastFingerId)
{
rotateAngle = touch.getTouchPosition().y - lastTouch.getTouchPosition().y;
rotate = true;
}
lastFingerId = touch.getId();
}
return(rotateAngle / 50);
}