internal void CreateDrawHelper()
{
// World to NDC transform
float height;
height = (DrawViewHeight / DrawViewWidth) * RequestedWorldWidth;
Vector2 min, max;
min = new Vector2(RequestedWorldMin.X, RequestedWorldMin.Y);
max = new Vector2((min.X + RequestedWorldWidth), (min.Y + height));
Vector2 size = max - min;
Vector2 center = min + (size * 0.5f);
m_WorldBound.Center = center;
m_WorldBound.Width = size.X;
m_WorldBound.Height = size.Y;
if (null == m_DrawHelper)
{
m_DrawHelper = new XNACS1LibDrawHelper(m_GraphicsManager.GraphicsDevice, Content, m_WorldBound, m_FontManager, new Vector2(XNACS1_AppWindowWidth, XNACS1_AppWindowHeight));
XNACS1Primitive.SetDrawHelper(m_DrawHelper);
}
else
{
// update the transformation matrices
m_DrawHelper.SetTransformationMatrices(m_WorldBound, new Vector2(XNACS1_AppWindowWidth, XNACS1_AppWindowHeight));
}
}
