/** TODO: avoid recalculating when nothing changed */
Matrix44 Entity2D::GetCenterTransformationMatrix()
{
Matrix44 matrix = Matrix44::Identity;
matrix.Scale(Vector3::Create(m_vScale.X, m_vScale.Y, 1.0f));
matrix.Rotate(Vector3::Create(0.0f, 0.0f, m_fRotation*Math::DegToRadFactor));
matrix.Translate(Vector3::Create(m_vPosition.X, m_vPosition.Y, 0.0f));
// TODO: use type checking at initialization time in AddChild() and only use static_cast here
if(Entity2D* pEntity2D = GetAncestor<Entity2D>())
{
matrix *= pEntity2D->GetTransformationMatrix();
}
return matrix;
}
//! returns true if the button is touched
bool Button::IsTouched() const
{
Matrix44 transformation = Matrix44::Identity;
transformation.Translate(-Vector3::Create(m_vCenter.X, m_vCenter.Y, 0.0f));
transformation.Scale(Vector3::Create(m_vScale.X, m_vScale.Y, 1.0f));
transformation.Rotate(Vector3::Create(0.0f, 0.0f, m_fRotation*Math::DegToRadFactor));
transformation.Translate(Vector3::Create(m_vOriginalPosition.X, m_vOriginalPosition.Y, 0.0f));
if(Entity2D* p2DEntity = GetAncestor<Entity2D>())
{
transformation *= p2DEntity->GetTransformationMatrix();
}
Matrix44 inverse;
if(transformation.GetInverse(inverse))
{
Vector2 vTouchPos = InputManager::Instance()->GetTouchState().vPosition;
Vector3 invTouchPos3D = inverse.TransformVect(Vector3::Create(vTouchPos.X, vTouchPos.Y, 0.0f));
Vector2 vInvTouchPos(invTouchPos3D.X, invTouchPos3D.Y);
return GetBoundingBox().Contains(vInvTouchPos);
}
return false;
}