IlvSimpleBitmapTransition Class Reference

Bitmap transition class. More...

#include <ilviews/bitmaps/transition.h>

Inheritance diagram for IlvSimpleBitmapTransition:

Public Types
enum	Transition { ,   WipeLeft, WipeRight, WipeDown, WipeUp ,   BoxIn, BoxOut, SplitHorizontalIn, SplitHorizontalOut,   SplitVerticalIn, SplitVerticalOut , SnailIn , BandVerticalIn,   BandHorizontalIn }
	This enumeration defines the various transitions that IlvSimpleBitmapTransition objects can deal with. More...

Public Member Functions
	IlvSimpleBitmapTransition (Transition type)
	Constructor. More...
virtual void	computeTransitionBitmapData (IlDouble oldRate, IlDouble newRate, const IlvRGBBitmapData &src, const IlvRGBBitmapData &dst, IlvRGBBitmapData &bitmap, IlvRegion &region) const
	Computes a transition image between the specified bitmap data objects. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvBitmapTransition
static void	Draw (IlvPort &dst, const IlvPoint &at, const IlvBitmapData &src, const IlvRegion &region)
	Draws the specified region of the bitmap data object into the specified port. More...

Detailed Description

Bitmap transition class.

Library: display

This class handles bitmap transitions using simple geometric algorithms.

See Also

IlvAlphaBitmapTransition, IlvDissolveBitmapTransition

Member Enumeration Documentation

enum IlvSimpleBitmapTransition::Transition

This enumeration defines the various transitions that IlvSimpleBitmapTransition objects can deal with.

Enumerator
WipeLeft	Wipes the source image from the right to the left, revealing the destination image.
WipeRight	Wipes the source image from the left to the right, revealing the destination image.
WipeDown	Wipes the source image from the top to the bottom, revealing the destination image.
WipeUp	Wipes the source image from the bottom to the top, revealing the destination image.
BoxIn	Wipes the source image by describing a box from the borders of the image to the center, revealing the destination image.
BoxOut	Wipes the source image by describing a box from the center of the image to the borders, revealing the destination image.
SplitHorizontalIn	Wipes the source image both from the left to the center and from the right to the center, revealing the destination image.
SplitHorizontalOut	Wipes the source image both from the center to the left and from the center to the right, revealing the destination image.
SplitVerticalIn	Wipes the source image both from the top to the center and from the bottom to the center, revealing the destination image.
SplitVerticalOut	Wipes the source image both from the center to the top and from the center to the bottom, revealing the destination image.
SnailIn	Wipes the source image by using a 'snail', revealing the destination image.
BandVerticalIn	Wipes the source image by using vertical lines, revealing the destination image.
BandHorizontalIn	Wipes the source image by using horizontal lines, revealing the destination image.

Constructor & Destructor Documentation

IlvSimpleBitmapTransition::IlvSimpleBitmapTransition

(

Transition

type

)

Constructor.

Initializes a new instance of the IlvSimpleBitmapTransition class.

Parameters

type	The type of transition.

Member Function Documentation

virtual void IlvSimpleBitmapTransition::computeTransitionBitmapData ( IlDouble  oldRate, IlDouble  newRate, const IlvRGBBitmapData &  src, const IlvRGBBitmapData &  dst, IlvRGBBitmapData &  current, IlvRegion &  region  ) const

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.

Parameters

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.

Implements IlvBitmapTransition.