ios - Is there a way to tap into the CoreAnimation completion curve mathematics for custom animations? -

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for various reasons, animating manually using cadisplaylink:

- (void)update:(cadisplaylink *)sender; {     // linearly interpolate proportion animated based on elapsed time     cgfloat proportion = ...       [self updateanimationforproportion:proportion]; }

i want uiviewanimationoptioncurveeaseinout instead of linear calculation.

  • is possible callback coreanimation instead of implementing mathematics manually?

  • or better, possible using ios7 physics based animation?

    [uiview animatewithduration:0.5 delay:0.0      usingspringwithdamping:0.5       initialspringvelocity:0.5                     options:0 animations:^{ ... } completion:nil];

nope not possible seems.

if helps looking use ease curves in ios, took list of handy ease curves jquery.easing.1.3 , ported them useable in c simple header file (,c++,objective-c,etc):

https://gist.github.com/metec/10012959


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