void MobileSimulator::MouseMotionEvent(Vec2i screenCoordinates)
{
Vector2 pos = MathUtil::ScreenToWorld(screenCoordinates);
_fingerGhost1->SetPosition(pos);
_fingerGhost2->SetPosition(-pos);
if (_mouseDown)
{
//move touch(es)
TouchList *tl = &TouchListener::GetTouchList();
if (tl->size() > 0)
{
(*tl)[0]->CurrentPoint = screenCoordinates;
if ( (*tl)[0]->MotionStartTime < 0.0f )
{
(*tl)[0]->MotionStartTime = theWorld.GetCurrentTimeSeconds();
}
}
if (tl->size() > 1)
{
Vector2 negCoordsVec = MathUtil::WorldToScreen(-pos);
Vec2i negCoords(negCoordsVec.X, negCoordsVec.Y);
(*tl)[1]->CurrentPoint = negCoords;
if ( (*tl)[1]->MotionStartTime < 0.0f )
{
(*tl)[1]->MotionStartTime = theWorld.GetCurrentTimeSeconds();
}
Touch* t1 = (*tl)[0];
Touch* t2 = (*tl)[1];
Vector2 start1(t1->StartingPoint);
Vector2 current1(t1->CurrentPoint);
Vector2 start2(t2->StartingPoint);
Vector2 current2(t2->CurrentPoint);
Vector2 initialVector = start2 - start1;
Vector2 currentVector = current2 - current1;
Vector2 initNorm = Vector2::Normalize(initialVector);
Vector2 currentNorm = Vector2::Normalize(currentVector);
float radiansRotated = acos(Vector2::Dot(initNorm, currentNorm));
if (!_multiGestureOngoing)
{
Vector2 motion = current1 - start1;
if (motion.LengthSquared() >= (MULTI_MIN_DISTANCE * MULTI_MIN_DISTANCE) )
{
_multiGestureOngoing = true;
// figure out if it's a rotate or a pinch
if (radiansRotated > MULTI_ROTATE_ANGLE)
{
_gestureType = ROTATE;
}
else
{
_gestureType = PINCH;
}
}
}
if (_multiGestureOngoing)
{
GestureData gd;
gd.Velocity = 0.0f; // don't want to store all the extra datums
// needed to actually calculate this
if (_gestureType == ROTATE)
{
float cross = Vector2::Cross(initNorm, currentNorm);
if (cross > 0.0f)
{
radiansRotated = -radiansRotated;
}
gd.GestureMagnitude = radiansRotated;
theSwitchboard.Broadcast(new TypedMessage<GestureData>("MultiTouchRotate", gd));
}
else if (_gestureType == PINCH)
{
gd.GestureMagnitude = currentVector.Length() / initialVector.Length();
theSwitchboard.Broadcast(new TypedMessage<GestureData>("MultiTouchPinch", gd));
}
}
}
}
}
