/// <summary>
/// Restore the state of this drawer
/// </summary>
public void Load(object state)
{
if (state is DrawerState)
{
DrawerState ds = (DrawerState)state;
currentTransform = ds.CurrentTransform;
matrixStack = ds.MatrixStack;
transformRequired = currentTransform != null;
}
else
{
IncompatibleTypeException.Publish(state, typeof(DrawerState));
}
}
/// <summary>
/// Create a new transformation matrix and make it active
/// </summary>
public void PushMatrix()
{
if (currentTransform == null)
{
currentTransform = new Matrix3x3();
}
else
{
//store current transform to stack
if (matrixStack == null)
{
matrixStack = new Matrix3x3Stack();
}
matrixStack.Push(currentTransform);
//create a new matrix
currentTransform = currentTransform.Clone();
}
transformRequired = true;
}
private Matrix3x3Stack(Matrix3x3Stack source)
: base(source)
{
}