protected void PushScissor()
{
var wScissor = new Scissor(AbsoluteLocation, Size).Merge(mScissorStack.FirstOrDefault());
wScissor.Apply();
mScissorStack.Push(wScissor);
}
public Scissor Merge(Scissor scissor)
{
if (scissor == null)
{
return(this);
}
var wX = Math.Max(mLocation.X, scissor.mLocation.X);
var wY = Math.Max(mLocation.Y, scissor.mLocation.Y);
var wTopLeft = new Vector2(wX, wY);
var wThisBottomRight = mLocation + mSize;
var wBottomRight = scissor.mLocation + scissor.mSize;
wX = Math.Min(wThisBottomRight.X, wBottomRight.X);
wY = Math.Min(wThisBottomRight.Y, wBottomRight.Y);
wBottomRight = new Vector2(wX, wY);
var wWidth = wBottomRight.X - wTopLeft.X;
var wHeigth = wBottomRight.Y - wTopLeft.Y;
var wSize = new Vector2(wWidth, wHeigth);
return(new Scissor(wTopLeft, wSize));
}