Align object to a face



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 31/05/2006 at 01:23, xxxxxxxx wrote:

    User Information:
    Cinema 4D Version:   8+ 
    Platform:   Windows  ;   
    Language(s) :     C++  ;

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    To simulate that an object is moving on a surface, I need to align an object to a face. I know collision point with the surface, and I get the normal of the found face, now I need to rotate the object according with the normal! This make me crazy, I'm new on vector math, and I can't find a way to do this!
    Can someone help me with an exhaustive example ?
    Thank's



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 31/05/2006 at 03:36, xxxxxxxx wrote:

    The normal alone does not specify the rotation fully. You also need to specify a direction within the surface for the bank. Then the normal will be the Z azis and the chosen direction will be the X axis. The Y axis is Z % X, where % is the cross product.
    You can do these things directly in the object matrix. Just make sure that the vectors are normalized.



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 31/05/2006 at 06:29, xxxxxxxx wrote:

    Thank's Mikael, I'll test it, I hope to have understood!


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