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Re: Getting cartesian values from Bezier curve question
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Re: Getting cartesian values from Bezier curve question


  • Subject: Re: Getting cartesian values from Bezier curve question
  • From: Marcel Weiher <email@hidden>
  • Date: Tue, 15 Jun 2004 16:35:11 +0100

Are you sure you want an NSBezierPath to control a set of values? It seems more like you want to have a lookup of values with smooth interpolation, which could potentially be rendered using a NSBezierPath. However, since you actually need to smoothly interpolate values without the bezier path, it probably won't be necessary.

Cheers,

Marcel

On 15 Jun 2004, at 15:11, Vince Ackerman wrote:

Did you get an answer to this? I too need to find this method.

Vince

On Jun 14, 2004, at 16:05, dan donaldson wrote:

Hello Wise Ones

I am considering adding a control to allow users to use a Bezier Path to edit a set of values that change over time. The essentials are a timeline with values determined by keyframes which will be represented by Bezier nodes.

My question is, is there a simple way to derive the y value of a bezier line segment given an x coordinate. Assume that there is no circumstance where more than one y value might exist for a given x value. I don't see anything in the NSBezierPath documentation that indicates that this is supported.

For the purposes I will be putting this to, a close approximation - eg 2% error - would suffice.

Anyone?
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  • Follow-Ups:
    • Re: Getting cartesian values from Bezier curve question
      • From: Raphael Sebbe <email@hidden>
References: 
 >Getting cartesian values from Bezier curve question (From: dan donaldson <email@hidden>)
 >Re: Getting cartesian values from Bezier curve question (From: Vince Ackerman <email@hidden>)

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