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108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
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/*****************************************************************************
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** **
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** Neversoft Entertainment. **
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** **
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** Copyright (C) 2000 - All Rights Reserved **
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** **
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******************************************************************************
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** **
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** Project: **
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** **
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** Module: **
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** **
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** File name: **
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** **
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** Created by: rjm **
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** **
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** Description: **
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** **
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*****************************************************************************/
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#ifndef __GFX_IMAGE_IMAGEBASIC_H
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#define __GFX_IMAGE_IMAGEBASIC_H
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/*****************************************************************************
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** Includes **
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*****************************************************************************/
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#ifndef __CORE_DEFINES_H
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#include <core/defines.h>
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#endif
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/*****************************************************************************
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** Defines **
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*****************************************************************************/
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namespace Image
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{
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enum JustX
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{
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vJUST_LEFT = 0,
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vJUST_CENTER_X,
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vJUST_RIGHT,
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};
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enum JustY
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{
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vJUST_TOP = 0,
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vJUST_CENTER_Y,
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vJUST_BOTTOM,
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};
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struct RGBA
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{
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RGBA() { }
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RGBA(uint8 red, uint green, uint blue, uint alpha) :
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r(red),
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g(green),
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b(blue),
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a(alpha) { }
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void Blend128(const RGBA & rgba);
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void Blend255(const RGBA & rgba);
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uint8 r;
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uint8 g;
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uint8 b;
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uint8 a;
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};
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////////////////////////
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// Inlines
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inline void RGBA::Blend128(const RGBA & rgba)
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{
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int blend_val;
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blend_val = r * rgba.r;
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r = (uint8) (blend_val >> 7);
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blend_val = g * rgba.g;
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g = (uint8) (blend_val >> 7);
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blend_val = b * rgba.b;
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b = (uint8) (blend_val >> 7);
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blend_val = a * rgba.a;
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a = (uint8) (blend_val >> 7);
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}
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inline void RGBA::Blend255(const RGBA & rgba)
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{
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int blend_val;
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blend_val = r * rgba.r;
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r = (uint8) (blend_val / 255);
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blend_val = g * rgba.g;
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g = (uint8) (blend_val / 255);
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blend_val = b * rgba.b;
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b = (uint8) (blend_val / 255);
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blend_val = a * rgba.a;
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a = (uint8) (blend_val >> 7); // Alpha is always 128 == 1.0
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}
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}
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#endif //__GFX_IMAGE_IMAGEBASIC_H
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