bezier spline



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    On 10/11/2005 at 07:32, xxxxxxxx wrote:

    User Information:
    Cinema 4D Version:   8.5 
    Platform:      
    Language(s) :   C.O.F.F.E.E  ;

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    Hi,

    I have the following problem: I want to add points to a given bezier spline in the scene. But it's shape needs to remain the same!
    I know I can get the tangents of that spline of a certain position x along the spline with "GetSplineTangent( x, segment )", but what does that tell me about the required coordinates of that points handles, if I add a point at that position? It only tells me the angle, right?

    Obviously longer handles produce a larger radius, but how is the influence of the length of a handle to the radius defined mathematicly?
    I didn't find any beziersplines in a maths book that are controlled through tangents! Maybe you tell me that I have to look harder, or it is a cinema thing, which I absolutely love, by the way!

    Well anyways, it might be the wrong approach.

    I also thought about the "sendmodelingcommand()" function and the "MCOMMAND_SPLINE_ADDPOINT" command, since added points to a bezierspline in cinema automatically take on the right tangents.
    But what woud this look like?
    How do I tell cinema where to add my point in the spline?

    SendModelingCommand(MCOMMAND_SPLINE_ADDPOINT, doc, op, ????, MODIFY_ALL)

    I hope you are understanding what I am trying to do.
    Can anyone help me? Am I thinking in the right direction?


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