PNMPainter Class Reference

This class provides a number of convenient methods for painting drawings directly into a PNMImage. More...

#include "pnmPainter.h"

Public Member Functions
	PNMPainter (PNMImage &image, int xo=0, int yo=0)
	The constructor stores a pointer to the PNMImage you pass it, but it does not take ownership of the object; you are responsible for ensuring that the PNMImage does not destruct during the lifetime of the PNMPainter object. More...
void	draw_line (float xa, float ya, float xb, float yb)
	Draws an antialiased line on the PNMImage, using the current pen. More...
void	draw_point (float x, float y)
	Draws an antialiased point on the PNMImage, using the current pen. More...
void	draw_rectangle (float xa, float ya, float xb, float yb)
	Draws a filled rectangule on the PNMImage, using the current pen for the outline, and the current fill brush for the interior. More...
PNMBrush *	get_fill () const
PNMBrush *	get_pen () const
void	set_fill (PNMBrush *fill)
void	set_pen (PNMBrush *pen)

Public Attributes
	get_fill
	Returns the current fill brush. More...
	get_pen
	Returns the current pen. More...
	set_fill
	Specifies a PNMBrush that will be used for filling in the interiors of objects. More...
	set_pen
	Specifies a PNMBrush that will be used for drawing lines and edges. More...

Detailed Description

This class provides a number of convenient methods for painting drawings directly into a PNMImage.

It stores a pointer to the PNMImage you pass it, but it does not take ownership of the object; you are responsible for ensuring that the PNMImage does not destruct during the lifetime of the PNMPainter object.

Definition at line 30 of file pnmPainter.h.

Constructor & Destructor Documentation

PNMPainter()

PNMPainter::PNMPainter ( PNMImage &  image, int  xo = 0, int  yo = 0  )

explicit

The constructor stores a pointer to the PNMImage you pass it, but it does not take ownership of the object; you are responsible for ensuring that the PNMImage does not destruct during the lifetime of the PNMPainter object.

The xo, yo coordinates specify an optional offset for fill coordinates. If you are painting with a pattern fill, these specify the virtual coordinates of the upper-left corner of the image, which can allow you to adjust the pattern to line up with nested images, if necessary.

Definition at line 27 of file pnmPainter.cxx.

Member Function Documentation

draw_line()

void PNMPainter::draw_line	(	float	xa,
		float	ya,
		float	xb,
		float	yb
	)

Draws an antialiased line on the PNMImage, using the current pen.

Definition at line 39 of file pnmPainter.cxx.

Referenced by draw_point().

draw_point()

void PNMPainter::draw_point ( float  x, float  y  )

inline

Draws an antialiased point on the PNMImage, using the current pen.

Definition at line 69 of file pnmPainter.I.

References draw_line().

draw_rectangle()

void PNMPainter::draw_rectangle	(	float	xa,
		float	ya,
		float	xb,
		float	yb
	)

Draws a filled rectangule on the PNMImage, using the current pen for the outline, and the current fill brush for the interior.

The two coordinates specify any two diagonally opposite corners.

Definition at line 142 of file pnmPainter.cxx.

Member Data Documentation

get_fill

PNMBrush * PNMPainter::get_fill

inline

Returns the current fill brush.

See set_fill().

Definition at line 41 of file pnmPainter.h.

get_pen

PNMBrush * PNMPainter::get_pen

inline

Returns the current pen.

See set_pen().

Definition at line 40 of file pnmPainter.h.

set_fill

void PNMPainter::set_fill

inline

Specifies a PNMBrush that will be used for filling in the interiors of objects.

If the brush is a bitmap brush, its image will be tiled throughout the space.

Unlike the PNMImage passed to the constructor, the PNMPainter will take ownership of the fill brush. It is not necessary to keep a separate pointer to it.

Definition at line 41 of file pnmPainter.h.

set_pen

void PNMPainter::set_pen

inline

Specifies a PNMBrush that will be used for drawing lines and edges.

If the brush is a bitmap brush, its image will be smeared pixelwise along the line.

Unlike the PNMImage passed to the constructor, the PNMPainter will take ownership of the pen. It is not necessary to keep a separate pointer to it.

Definition at line 40 of file pnmPainter.h.

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

• panda/src/pnmimage/pnmPainter.h
• panda/src/pnmimage/pnmPainter.cxx
• panda/src/pnmimage/pnmPainter.I