void TransformComponent::onUpdate(float dt)
{
if(localdirty)
{
CalcLocalTransform();
} else if(worlddirty) {
CalcWorldTransform();
}
}
//----------------------------------------------------------------------------------------------
Vector& IDrawInterface::GlobalToLocalTransform(Vector& OutLocalPoint, const Vector& InGlobalPoint) const
{
// build global space matrix
Matrix WTM = CalcWorldTransform();
Vector UnTransformedLocalPosition = InGlobalPoint - WTM.t;
// calc projection to local axis
Vector AxisX = WTM._row0;
Vector AxisY = WTM._row1;
Vector AxisZ = WTM._row2;
AxisX.normalize();
AxisY.normalize();
AxisZ.normalize();
Matrix IWTM;
invert(IWTM, WTM);
OutLocalPoint = Vector(UnTransformedLocalPosition.Dot(AxisX) * IWTM._row0.Length(),
UnTransformedLocalPosition.Dot(AxisY) * IWTM._row1.Length(),
UnTransformedLocalPosition.Dot(AxisZ) * IWTM._row2.Length());
return OutLocalPoint;
}
