Gdc2.cpp File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "Lgi.h"

Functions
COLOUR	RgbToHls (COLOUR Rgb24)
COLOUR	HlsToRgb (COLOUR Hls)
GSurface *	ConvertDC (GSurface *pDC, int Bits)
	Converts a context to a different bit depth.
COLOUR	CBit (int DstBits, COLOUR c, int SrcBits, GPalette *Pal)
	Converts a colour to a different bit depth.
COLOUR	GdcGreyScale (COLOUR c, int Bits)
	Turns a colour into an 8 bit grey scale representation.
COLOUR	GdcMixColour (COLOUR c1, COLOUR c2, double HowMuchC1)
	blends 2 24bit colours by the amount specified

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Detailed Description

Author:

Matthew Allen, fret@memecode.com

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Function Documentation

GSurface* ConvertDC	(	GSurface *	pDC,
		int	Bits
	)

Converts a context to a different bit depth.

Parameters:

pDC	The source image
Bits	The destination bit depth

References GSurface::Blt(), GSurface::Create(), GSurface::X(), and GSurface::Y().

COLOUR HlsToRgb

(

COLOUR

Hsl32

)

Converts a hls32 colour to a rgb24

See also:

Hls32

References H32, L32, Rgb24, and S32.

COLOUR RgbToHls

(

COLOUR

Rgb24

)

Converts a rgb24 colour to a hls32

See also:

Hls32

References B24, G24, Hls32, HUE_UNDEFINED, and R24.