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Thread: Curves

  1. #1

    Curves

    What is the most efficient way to draw curves in opengles? Thanks.

  2. #2
    Senior Member
    Join Date
    May 2006
    Posts
    353
    Typically you'd tesselate them into lines/triangles until they're rounded enough for your purposes. You need to be more specific if you want a more specific answer.
    Georg Kolling, Imagination Technologies
    Please ask questions specific to PowerVR hardware or SDKs on the PowerVR Insider Forum
    DevTech@imgtec.com | http://www.powervrinsider.com

  3. #3

    Beziers

    I'm thinknig of an animation similar to the "Beziers" screensaver on winXP. I dont think tesellation would work there. Is there any way, any transformation, that would draw a line as a curve?

  4. #4
    Senior Member
    Join Date
    May 2006
    Posts
    353

    Re: Beziers

    Quote Originally Posted by akhil
    I'm thinknig of an animation similar to the "Beziers" screensaver on winXP. I dont think tesellation would work there. Is there any way, any transformation, that would draw a line as a curve?
    No, rasterization is always linear.

    Why do you think tessellation would not work? Many curve drawing libraries work by tessellating a curve into sufficiently small line segments.
    Georg Kolling, Imagination Technologies
    Please ask questions specific to PowerVR hardware or SDKs on the PowerVR Insider Forum
    DevTech@imgtec.com | http://www.powervrinsider.com

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