BaseBitmap draw off the area



  • On 14/05/2014 at 09:05, xxxxxxxx wrote:

    User Information:
    Cinema 4D Version:   R13 
    Platform:   Windows  ;   
    Language(s) :     C++  ;

    ---------
    Hello,

    I have a little problem to draw lines into a BaseBitmap.

    When all the lines are inside the area, it's ok, but when there is one point out of the bitmap area, the line is not drawn.

    _<_img src="http://vonc.fr/temp/fc4d/zone.png" border="0" /_>_

    Is there a way to set a kind of clipping region for a basebitmap, to be able to draw lines who exceed the bitmap area ?



  • On 14/05/2014 at 10:45, xxxxxxxx wrote:

    It's ok, I used the Cohen–Sutherland algorithm to make the clipping and it works fine !

    http://en.wikipedia.org/wiki/Cohen–Sutherland_algorithm

    For anyone who want ot use it : don't forget to use (Width - 1) and (Height - 1) for the size of the area in the algorythm, because it represent the max position pixel value (for 100 width, pixels X are 0 to 99).


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