public virtual void Begin()
{
// Save the current matrix
CCDrawManager.PushMatrix();
CCSize texSize = m_pTexture.ContentSizeInPixels;
// Calculate the adjustment ratios based on the old and new projections
CCDirector director = CCDirector.SharedDirector;
CCSize size = director.WinSizeInPixels;
float widthRatio = size.Width / texSize.Width;
float heightRatio = size.Height / texSize.Height;
CCDrawManager.SetRenderTarget(m_pTexture);
CCDrawManager.SetViewPort(0, 0, (int)texSize.Width, (int)texSize.Height);
Matrix projection = Matrix.CreateOrthographicOffCenter(
-1.0f / widthRatio, 1.0f / widthRatio,
-1.0f / heightRatio, 1.0f / heightRatio,
-1, 1
);
CCDrawManager.MultMatrix(ref projection);
if (m_bFirstUsage)
{
CCDrawManager.Clear(Color.Transparent);
m_bFirstUsage = false;
}
}
/// <summary>
/// Sets the camera using gluLookAt using its eye, center and up_vector
/// </summary>
public void Locate()
{
if (m_bDirty)
{
m_lookupMatrix = Matrix.CreateLookAt(new Vector3(m_fEyeX, m_fEyeY, m_fEyeZ),
new Vector3(m_fCenterX, m_fCenterY, m_fCenterZ),
new Vector3(m_fUpX, m_fUpY, m_fUpZ));
m_bDirty = false;
}
CCDrawManager.MultMatrix(ref m_lookupMatrix);
}
public void Transform()
{
CCDrawManager.MultMatrix(NodeToParentTransform(), m_fVertexZ);
// XXX: Expensive calls. Camera should be integrated into the cached affine matrix
if (m_pCamera != null && !(m_pGrid != null && m_pGrid.Active))
{
bool translate = (m_obAnchorPointInPoints.X != 0.0f || m_obAnchorPointInPoints.Y != 0.0f);
if (translate)
{
CCDrawManager.Translate(m_obAnchorPointInPoints.X, m_obAnchorPointInPoints.Y, 0);
}
m_pCamera.Locate();
if (translate)
{
CCDrawManager.Translate(-m_obAnchorPointInPoints.X, -m_obAnchorPointInPoints.Y, 0);
}
}
}
