Rogue Wave Views Foundation Package API Reference Guide |
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Bitmap transition class. More...
#include <ilviews/bitmaps/transition.h>
Public Member Functions | |
virtual void | computeTransitionBitmapData (IlDouble oldRate, IlDouble newRate, const IlvRGBBitmapData &src, const IlvRGBBitmapData &dst, IlvRGBBitmapData ¤t, IlvRegion ®ion) const =0 |
Computes a transition image between the specified bitmap data objects. More... | |
Static Public Member Functions | |
static void | Draw (IlvPort &dst, const IlvPoint &at, const IlvBitmapData &src, const IlvRegion ®ion) |
Draws the specified region of the bitmap data object into the specified port. More... | |
Bitmap transition class.
Library: xviews or winviews or mviews (mutually exclusive)
This abstract class is the base class for all bitmap transition classes. It provides an interface to sample transitions between two bitmap data objects of the same size and color depth.
This class can be used with the IlvBitmapTransitionHandler
class to provide animation between two images.
IlvRGBBitmapData
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pure virtual |
Computes a transition image between the specified bitmap data objects.
This method is pure and must be defined in subclasses. It computes a transition image given a source bitmap data object, a destination bitmap data object, and a percentage of completion of the transition. src and dst must have the same size and color depth.
When calling this method, current must contain the transition image corresponding to the oldRate percentage of completion. After returning, current contains the transition image corresponding to the newRate percentage of completion.
oldRate | The previous percentage of completion of the transition. Valid values are double values in the interval 0-100. |
newRate | The new percentage of completion of the transition. Valid values are double values in the interval 0-100. |
src | The source bitmap data. |
dst | The destination bitmap data. |
current | The current bitmap data. |
region | The region of the current bitmap that has changed between the transition from oldRate to newRate. |
Implemented in IlvDissolveBitmapTransition, IlvSimpleBitmapTransition, and IlvAlphaBitmapTransition.
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static |
Draws the specified region of the bitmap data object into the specified port.
dst | The destination port. |
at | The location where the bitmap data will be copied. |
src | The source bitmap data. |
region | The region of the bitmap data that will be copied into dst. |
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