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/*
This file is part of Advanced Strategic Command; http://www.asc-hq.de
Copyright (C) 1994-2003 Martin Bickel and Marc Schellenberger
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
#include "drawing.h"
/*
SDLmm::ColorRGB lightenColor( const SDLmm::ColorRGB& color, float factor )
{
SDLmm::ColorRGB c = color;
c.r = min( max( int( float(c.r) * factor ), 0 ), 255);
c.g = min( max( int( float(c.g) * factor ), 0 ), 255);
c.b = min( max( int( float(c.b) * factor ), 0 ), 255);
return c;
};
*/
char saturationTranslationTable[256][256];
class TableGenerator {
public:
TableGenerator() {
for ( int i = 0; i < 256; ++i )
for ( int j = 0; j < 256; ++j ) {
int v = i * j / 16;
if ( v > 255 )
v = 255;
if ( v < 0 )
v = 0;
saturationTranslationTable[i][j] = v;
}
};
} tableGenerator;
#if 0
SDLmm::Color lighten_Color( SDLmm::Color color, char factor16 )
{
SDLmm::Color c = saturationTranslationTable[color & 0xff][factor16] |
(saturationTranslationTable[(color >> 8) & 0xff][factor16] << 8 ) |
(saturationTranslationTable[(color >> 16) & 0xff][factor16] << 16 ) |
(color & 0xff000000);
/*
SDLmm::Color c = min( max( int( float(color & 0xff) * factor ), 0 ), 255) |
(min( max( int( float((color >> 8) & 0xff) * factor ), 0 ), 255) << 8) |
(min( max( int( float((color >> 16) & 0xff) * factor ), 0 ), 255) << 16) |
(color & 0xff000000);
*/
return c;
}
SDL_Color lightenColor( const SDL_Color& color, float factor )
{
SDL_Color c = color;
c.r = min( max( int( float(c.r) * factor ), 0 ), 255);
c.g = min( max( int( float(c.g) * factor ), 0 ), 255);
c.b = min( max( int( float(c.b) * factor ), 0 ), 255);
return c;
};
void lighten_Color( SDLmm::Color* color, float factor )
{
*color = lighten_Color( *color, factor );
}
void PutPixel( Surface& s, const SPoint& pos, Uint32 src )
{
typedef Uint32 PixelType;
char* c = (char*) s.pixels();
c += pos.y * s.pitch();
PixelType* dest = (Uint32*) c;
dest += pos.x;
PixelType alpha = src >> 24;
if ( alpha != PixelType(Surface::transparent)) {
// copied from SDL
/*
* take out the middle component (green), and process
* the other two in parallel. One multiply less.
*/
PixelType d = *dest;
PixelType dalpha = d & 0xff000000;
PixelType s1 = src & 0xff00ff;
PixelType d1 = d & 0xff00ff;
d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff;
src &= 0xff00;
d &= 0xff00;
d = (d + ((src - d) * alpha >> 8)) & 0xff00;
*dest = d1 | d | dalpha;
}
}
#endif
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