a2dAggDrawerRgba Class Reference
[classes used for drawing with a2dDrawer2D]

the antigrain based drawing context derived from a2dDrawer2D More...

#include <aggdrawer.h>

Inheritance diagram for a2dAggDrawerRgba:

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Collaboration diagram for a2dAggDrawerRgba:

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List of all members.

Public Member Functions
	a2dAggDrawerRgba (int width=0, int height=0)
	Drawer having a buffer of w pixel wide and h pixels heigh.
	a2dAggDrawerRgba (const wxSize &size)
	Drawer having a buffer of w pixel wide and h pixels height given by size.
	a2dAggDrawerRgba (const wxBitmap &bitmap)
	a2dAggDrawerRgba (const a2dAggDrawerRgba &other)
	copy constructor
wxBitmap	GetBuffer () const
	get buffer as bitmap pointer
wxImage	GetImageBuffer () const
	return wxImage which is used as buffer here
void	SetBufferSize (int w, int h)
	set buffer size to w pixel wide and h pixels heigh
wxBitmap	GetSubBitmap (wxRect sub_rect) const
	get part of the buffer given a rect
void	CopyIntoBuffer (const wxBitmap &bitm)
void	BlitBuffer (wxDC *dc, wxRect rect, const wxPoint &bufferpos=wxPoint(0, 0))
	used for blitting to a wxDC.
void	ShiftBuffer (int dxy, bool yshift)
	quick scroll over small distance
void	DrawImage (const wxImage &image, double x, double y, double width, double height, wxUint8 Opacity=255)
	Draw wxImage in world coordinates.
void	DrawImage (const a2dImageRGBA &image, double x, double y, double width, double height, wxUint8 Opacity=255)
Protected Member Functions
void	DoSetDrawStyle (a2dDrawStyle drawstyle)
void	Render (bool fillColor)
virtual void	RenderGradient (bool radial)
virtual void	RenderBitmapFill ()
virtual void	RenderSetClip ()
Protected Attributes
a2dImageRGBA	m_buffer
bool	m_needbufferupdate

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Detailed Description

the antigrain based drawing context derived from a2dDrawer2D

This drawing context does anti aliased and alpha drawing. And uses a a2dImageRGBA as a buffer. A strong feature is the ability to draw (rotated) wxImage's

Definition at line 666 of file aggdrawer.h.

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Constructor & Destructor Documentation

a2dAggDrawerRgba::a2dAggDrawerRgba

(

const wxBitmap &

bitmap

)

bitmap is converted to image on which you can draw. Use GetBuffer() to get a bitmap back.

Definition at line 1917 of file aggdrawer.cpp.

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Member Function Documentation

void a2dAggDrawerRgba::DrawImage	(	const wxImage &	image,
		double	x,
		double	y,
		double	width,
		double	height,
		wxUint8	Opacity = 255
	)			[virtual]

Draw wxImage in world coordinates.

Draw the wxImage to the screen in such a manner that the image is mapped into the rectangle defined by points (x-width/2,y-width/2) and (x+width/2,y+height/2) in world coordinates, with the center of the image at (x,y).

Parameters:

	image	image to draw
	x	world x position of center of image
	y	world y position of center of image
	width	width in world coordinates to map width of image to
	height	height in world coordinates to map height of image to

Implements a2dDrawer2D.

Definition at line 1999 of file aggdrawer.cpp.

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The documentation for this class was generated from the following files:

• aggdrawer.h
• aggdrawer.cpp