calculating parameters for defining subsections of quadratic bezier curves

Posted by jedierikb on Stack Overflow See other posts from Stack Overflow or by jedierikb
Published on 2010-04-16T21:19:50Z Indexed on 2010/04/16 21:23 UTC
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Filed under:

bezier

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algorithm

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math

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language-agnostic

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geometry

I have a quadratic bezier curve described as (startX, startY) to (anchorX, anchorY) and using a control point(controlX, controlY).

I have two questions:

(1) I want to determine y points on that curve based on an x point.

(2) Then, given two intermediary points on that bezier curve, I want to know the 6 parameters needed to create that mini-bezier curve.

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