110 lines
3.9 KiB
C
110 lines
3.9 KiB
C
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// NoesisGUI - http://www.noesisengine.com
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// Copyright (c) 2013 Noesis Technologies S.L. All Rights Reserved.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef __GUI_EASINGDOUBLEKEYFRAME_H__
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#define __GUI_EASINGDOUBLEKEYFRAME_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/ReflectionDeclare.h>
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#include <NsGui/DoubleKeyFrame.h>
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#include <NsGui/AnimationApi.h>
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namespace Noesis
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{
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class EasingFunctionBase;
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// A class that enables you to associate easing functions with a DoubleAnimationUsingKeyFrames
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/// key frame animation.
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///
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/// The following example shows how to use key frames with easing functions associated with them to
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/// create an animation of a rectangle that contracts upward, slows down, then expands downward (as
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/// though falling), and then bounces to a stop.
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///
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/// .. code-block:: xml
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///
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/// <Rectangle Name="myRectangle" Width="200" Height="200" Fill="Blue">
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/// <Rectangle.Triggers>
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/// <EventTrigger RoutedEvent="Rectangle.MouseDown">
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/// <BeginStoryboard>
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/// <Storyboard>
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/// <DoubleAnimationUsingKeyFrames
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/// Storyboard.TargetProperty="Height"
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/// Storyboard.TargetName="myRectangle">
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///
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/// <!-- This keyframe animates the ellipse up to the crest
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/// where it slows down and stops. -->
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/// <EasingDoubleKeyFrame Value="30" KeyTime="00:00:02">
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/// <EasingDoubleKeyFrame.EasingFunction>
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/// <CubicEase EasingMode="EaseOut"/>
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/// </EasingDoubleKeyFrame.EasingFunction>
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/// </EasingDoubleKeyFrame>
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///
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/// <!-- This keyframe animates the ellipse back down and makes
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/// it bounce. -->
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/// <EasingDoubleKeyFrame Value="200" KeyTime="00:00:06">
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/// <EasingDoubleKeyFrame.EasingFunction>
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/// <BounceEase Bounces="5" EasingMode="EaseOut"/>
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/// </EasingDoubleKeyFrame.EasingFunction>
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/// </EasingDoubleKeyFrame>
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///
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/// </DoubleAnimationUsingKeyFrames>
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/// </Storyboard>
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/// </BeginStoryboard>
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/// </EventTrigger>
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/// </Rectangle.Triggers>
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/// </Rectangle>
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///
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/// This class is used as part of a DoubleKeyFrameCollection in conjunction with a
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/// DoubleAnimationUsingKeyFrames to animate a Double property value along a set of key frames.
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/// This DoubleKeyFrame interpolates between the Double value of the previous key frame and its own
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/// value linearly with an easing function to produce its output value.
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///
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/// http://msdn.microsoft.com/en-us/library/system.windows.media.animation.easingdoublekeyframe.aspx
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_ANIMATION_API EasingDoubleKeyFrame final: public DoubleKeyFrame
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{
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public:
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/// Gets or sets the easing function applied to the key frame
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//@{
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EasingFunctionBase* GetEasingFunction() const;
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void SetEasingFunction(EasingFunctionBase* function);
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//@}
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// Hides Freezable methods for convenience
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//@{
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Ptr<EasingDoubleKeyFrame> Clone() const;
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Ptr<EasingDoubleKeyFrame> CloneCurrentValue() const;
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//@}
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public:
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/// Dependency properties
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//@{
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static const DependencyProperty* EasingFunctionProperty;
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//@}
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protected:
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/// From Freezable
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//@{
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Ptr<Freezable> CreateInstanceCore() const override;
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//@}
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/// From KeyFrame
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//@{
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float InterpolateValueCore(float baseValue, float keyFrameProgress) override;
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//@}
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NS_DECLARE_REFLECTION(EasingDoubleKeyFrame, DoubleKeyFrame)
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};
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}
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#endif
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