Prevent faces from drawing

On 08/06/2014 at 06:55, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   14 
Language(s) :     C++  ;

I have a tag that draws faces on top of the existing faces of an object, using DrawPoly.
If I draw them at the exact location of the original face, I get flicker because both faces are being drawn.
If I displace the draw faces a screen unit in the direction of the normals, some faces are drawn visible, some not completely. But all of them will show a distinct mesh separation as, being displaced, their vertexes don't exactly match.
So, is there any way to force faces of an object not to show in the editor, only showing the faces I draw?