https://github.com/shnhrrsn/shnunitbezier

C based Unit Bezier solver/interpolator ported from WebKit for use on iOS and OS X
https://github.com/shnhrrsn/shnunitbezier

Last synced: 26 days ago
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C based Unit Bezier solver/interpolator ported from WebKit for use on iOS and OS X

• Host: GitHub
• URL: https://github.com/shnhrrsn/shnunitbezier
• Owner: shnhrrsn
• License: gpl-2.0
• Created: 2015-02-21T20:26:39.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-04-30T18:41:13.000Z (over 9 years ago)
• Last Synced: 2024-09-13T03:59:36.807Z (about 2 months ago)
• Language: C
• Homepage:
• Size: 190 KB
• Stars: 1
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.markdown
  • License: LICENSE

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README

        
# SHNUnitBezier

C based Unit Bezier solver/interpolator ported from WebKit for use on iOS/OS X

## Usage

```c

// Setup some predefined values

const double from = 0.0;

const double to = 10.0;

double duration = 1.0;

double time = 0.3;

double current;

// Using predefined bezier curves:

current = SHNUnitBezierInterpolate(SHNUnitBezierEaseInOut, time / duration, duration, from, to);

NSLog(@"Ease in/out: %.03f", current); // Ease in/out: 1.872

current = SHNUnitBezierInterpolate(SHNUnitBezierEaseIn, time / duration, duration, from, to);

NSLog(@"Ease in: %.03f", current); // Ease in: 1.290

current = SHNUnitBezierInterpolate(SHNUnitBezierEaseOut, time / duration, duration, from, to);

NSLog(@"Ease out: %.03f", current); // Ease out: 4.460

// Using a linear curve:

current = SHNUnitBezierInterpolate(SHNUnitBezierLinear, time / duration, duration, from, to);

NSLog(@"Linear: %.03f", current); // Linear: 3.047

// Or, using a custom bezier curve:

current = SHNUnitBezierInterpolate(SHNUnitBezierMake(0.4, 0.01, 0.16, 1.0), time / duration, duration, from, to);

NSLog(@"Custom: %.03f", current); // Custom: 3.992

```

## License

GNU General Public License (inherited from WebKit)