124 lines
3.7 KiB
C++
124 lines
3.7 KiB
C++
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#include "lightmap.hpp"
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#include "effects.hpp"
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/*******************************************************************************
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** LightMapExpand
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*******************************************************************************/
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void
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LightMapExpand(Picture* dst, Picture* lightmap, Picture* tile, int level, int dx, int dy)
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{
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int i, j, u, v, l, ll, line, a, b;
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int y[2000], yy[2000];
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Pixel* p;
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dx /= (16 / level);
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dy /= (16 / level);
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PictureCreate(dst, (lightmap->width - 1) * level, (lightmap->height - 1) * level);
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EffectTile(dst, tile, -dx, -dy);
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/*
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**
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*/
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for (v = 0; v < lightmap->height - 1; v++)
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{
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for (u = 0; u < lightmap->width; u++)
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{
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a = INT_TO_FIX(PixelRed(lightmap->pixels[v + 0][u]));
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b = INT_TO_FIX(PixelRed(lightmap->pixels[v + 1][u]));
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y[u] = a;
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yy[u] = (b - a) / level;
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}
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line = v * level;
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for (i = 0; i < level; i++, line++)
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{
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p = dst->pixels[line];
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for (u = 0; u < lightmap->width - 1; u++)
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{
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l = y[u];
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ll = (y[u + 1] - y[u]) / level;
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for (j = 0; j < level; j++, p++, l += ll)
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{
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PixelSetRed(p, (PixelRed(*p) * l) / INT_TO_FIX(31));
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}
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y[u] += yy[u];
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}
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y[u] += yy[u];
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}
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}
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/*
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**
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*/
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for (v = 0; v < lightmap->height - 1; v++)
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{
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for (u = 0; u < lightmap->width; u++)
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{
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a = INT_TO_FIX(PixelGreen(lightmap->pixels[v + 0][u]));
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b = INT_TO_FIX(PixelGreen(lightmap->pixels[v + 1][u]));
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y[u] = a;
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yy[u] = (b - a) / level;
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}
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line = v * level;
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for (i = 0; i < level; i++, line++)
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{
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p = dst->pixels[line];
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for (u = 0; u < lightmap->width - 1; u++)
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{
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l = y[u];
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ll = (y[u + 1] - y[u]) / level;
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for (j = 0; j < level; j++, p++, l += ll)
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{
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PixelSetGreen(p, (PixelGreen(*p) * l) / INT_TO_FIX(31));
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}
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y[u] += yy[u];
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}
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y[u] += yy[u];
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}
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}
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/*
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**
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*/
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for (v = 0; v < lightmap->height - 1; v++)
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{
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for (u = 0; u < lightmap->width; u++)
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{
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a = INT_TO_FIX(PixelBlue(lightmap->pixels[v + 0][u]));
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b = INT_TO_FIX(PixelBlue(lightmap->pixels[v + 1][u]));
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y[u] = a;
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yy[u] = (b - a) / level;
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}
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line = v * level;
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for (i = 0; i < level; i++, line++)
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{
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p = dst->pixels[line];
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for (u = 0; u < lightmap->width - 1; u++)
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{
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l = y[u];
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ll = (y[u + 1] - y[u]) / level;
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for (j = 0; j < level; j++, p++, l += ll)
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{
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PixelSetBlue(p, (PixelBlue(*p) * l) / INT_TO_FIX(31));
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}
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y[u] += yy[u];
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}
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y[u] += yy[u];
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}
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}
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}
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