Tools::TransferFunction::DisplayColor Class Reference

#include <displaycolor.h>

List of all members.

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Detailed Description

Display a color palette, a unit box is drawn with different colors. With a mouse position (normalized with the box) it is possible to query what color has been selected.

This can be used as a color selector in a transfer function editor.

To draw the colors, this model is used:

	 *      ---------------------- white (1,1,1)
	 *      |                    |
	 *      |                    |
	 *      R      G      B      R
	 *      |------|------|------|
	 *    (100)  (010)  (001)  (100)
	 *      |                    |
	 *      |                    |
	 *      ---------------------- black (0,0,0)
	 * 

Internally, a 128x128 texture is created.

See also:

TransferFunction

Public Member Functions
	DisplayColor ()
	~DisplayColor ()
void	display () const
void	getRGB (float x, float y, float &r, float &g, float &b) const
void	mark (float r, float g, float b)

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Constructor & Destructor Documentation

Tools::TransferFunction::DisplayColor::DisplayColor

(

)

Tools::TransferFunction::DisplayColor::~DisplayColor

(

)

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Member Function Documentation

void Tools::TransferFunction::DisplayColor::display

(

)

const

display the colors in a centered 1x1 square

void Tools::TransferFunction::DisplayColor::getRGB	(	float	x,
		float	y,
		float &	r,
		float &	g,
		float &	b
	)			const

get rgb for a normalized position (0..1)

Parameters:

	x,y	(in) mouse position normalized with the box size (0..1)
	r,g,b	(out) color selected at position x,y

void Tools::TransferFunction::DisplayColor::mark	(	float	r,
		float	g,
		float	b
	)

place a cursor at color rgb

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

• displaycolor.h