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https://github.com/darlinghq/darling-cocotron.git
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79 lines
2.1 KiB
Objective-C
79 lines
2.1 KiB
Objective-C
#import <Foundation/NSRaise.h>
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#import <Foundation/NSString.h>
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#import <QuartzCore/CAMediaTimingFunction.h>
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NSString *const kCAMediaTimingFunctionLinear = @"kCAMediaTimingFunctionLinear";
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NSString *const kCAMediaTimingFunctionEaseIn = @"kCAMediaTimingFunctionEaseIn";
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NSString *const kCAMediaTimingFunctionEaseOut =
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@"kCAMediaTimingFunctionEaseOut";
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NSString *const kCAMediaTimingFunctionEaseInEaseOut =
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@"kCAMediaTimingFunctionEaseInEaseOut";
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NSString *const kCAMediaTimingFunctionDefault =
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@"kCAMediaTimingFunctionDefault";
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@implementation CAMediaTimingFunction
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- initWithControlPoints: (CGFloat)
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c1x: (CGFloat) c1y
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:(CGFloat) c2x
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:(CGFloat) c2y
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{
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_c1x = c1x;
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_c1y = c1y;
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_c2x = c2x;
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_c2y = c2y;
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return self;
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}
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+ functionWithControlPoints: (CGFloat)
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c1x: (CGFloat) c1y
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:(CGFloat) c2x
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:(CGFloat) c2y
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{
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return [[[self alloc] initWithControlPoints: c1x: c1y:c2x:c2y] autorelease];
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}
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+ functionWithName: (NSString *) name {
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if ([name isEqualToString: kCAMediaTimingFunctionLinear])
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return [self functionWithControlPoints: 0: 0:1:1];
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if ([name isEqualToString: kCAMediaTimingFunctionEaseIn])
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return [self functionWithControlPoints: 0.5: 0:1:1];
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if ([name isEqualToString: kCAMediaTimingFunctionEaseOut])
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return [self functionWithControlPoints: 0: 0:0.5:1];
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if ([name isEqualToString: kCAMediaTimingFunctionEaseInEaseOut])
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return [self functionWithControlPoints: 0.5: 0:0.5:1];
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if ([name isEqualToString: kCAMediaTimingFunctionDefault])
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return [self functionWithControlPoints: 0.25: 0.1:0.25:1];
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return nil;
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}
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- (void) getControlPointAtIndex: (size_t) index values: (CGFloat[2]) ptr {
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switch (index) {
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default:
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case 0:
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ptr[0] = 0;
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ptr[1] = 0;
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break;
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case 1:
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ptr[0] = _c1x;
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ptr[1] = _c1y;
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break;
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case 2:
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ptr[0] = _c2x;
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ptr[1] = _c2y;
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break;
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case 3:
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ptr[0] = 1;
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ptr[1] = 1;
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break;
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}
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}
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@end
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