bmptk::graphics::frame_filter Class Reference

apply a function to the color before writing More...

#include <graphics.h>

Inheritance diagram for bmptk::graphics::frame_filter:

Public Member Functions
	frame_filter (frame &f, color(&filter)(color))
	construct a frame_filter from the underlying frame and a filter function
	frame_filter (frame &f, void(&writer)(frame &f, vector p, color c, color bg))
	construct a frame_filter from the underlying frame and a writer function
void	checked_write (const vector p, const color c)
	apply the filter function, write the result to the underlying frame
void	flush ()
	flush the underlying frame
void	clear (const color c=color::white())
	clear the underlying frame with the filtered color, and remember it
Public Member Functions inherited from bmptk::graphics::frame
	frame (const vector size)
	create a frame of specified size
vector	size_get () const
	get the size of the frame
virtual vector	translate_outfrom (const vector p) const
	translate a subframe coordinate to a master frame coordinate
virtual vector	translate_into (const vector p) const
	translate a master frame coordinate to a subframe coordinate
bool	is_valid (vector p)
	whether p is within the frame
color	bg_get ()
	get the backround color
void	write (const vector p, const color c)
	write one pixel, address specified by vector

Additional Inherited Members
Protected Attributes inherited from bmptk::graphics::frame
const vector	size
	frame size
color	bg
	most recently applied background color (as used in clear())

Detailed Description

apply a function to the color before writing

When a frame_filter is consructed a filter function is specified that will be applied to the color of each pixel before it is written.

Alternatively, a writer function can be specified that is called to write a pixel. Besides changing the color, it can for instance write to one or more (different) points.

Definition at line 1077 of file graphics.h.

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

• graphics/graphics.h