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43 lines
1.4 KiB
43 lines
1.4 KiB
/** |
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Copyright (c) 2014-present, Facebook, Inc. |
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All rights reserved. |
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This source code is licensed under the BSD-style license found in the |
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LICENSE file in the root directory of this source tree. An additional grant |
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of patent rights can be found in the PATENTS file in the same directory. |
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*/ |
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#import <QuartzCore/CAAnimation.h> |
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#import <pop/POPDefines.h> |
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#import <pop/POPSpringAnimation.h> |
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/** |
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@abstract The current drag coefficient. |
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@discussion A value greater than 1.0 indicates Simulator slow-motion animations are enabled. Defaults to 1.0. |
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*/ |
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extern CGFloat POPAnimationDragCoefficient(); |
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@interface CAAnimation (POPAnimationExtras) |
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/** |
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@abstract Apply the current drag coefficient to animation speed. |
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@discussion Convenience utility to respect Simulator slow-motion animation settings. |
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*/ |
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- (void)pop_applyDragCoefficient; |
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@end |
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@interface POPSpringAnimation (POPAnimationExtras) |
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/** |
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@abstract Converts from spring bounciness and speed to tension, friction and mass dynamics values. |
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*/ |
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+ (void)convertBounciness:(CGFloat)bounciness speed:(CGFloat)speed toTension:(CGFloat *)outTension friction:(CGFloat *)outFriction mass:(CGFloat *)outMass; |
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/** |
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@abstract Converts from dynamics tension, friction and mass to spring bounciness and speed values. |
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*/ |
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+ (void)convertTension:(CGFloat)tension friction:(CGFloat)friction toBounciness:(CGFloat *)outBounciness speed:(CGFloat *)outSpeed; |
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@end
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