46 lines
953 B
C
46 lines
953 B
C
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#ifndef TILEATLAS_H
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#define TILEATLAS_H
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#include "etc-internal.h"
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#include <QList>
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namespace TileAtlas
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{
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/* Abstract definition of a blit
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* operation with undefined rect width */
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struct Blit
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{
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Vec2i src;
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Vec2i dst;
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int h;
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Blit(int sx, int sy,
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int dx, int dy,
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int h)
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: src(sx, sy),
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dst(dx, dy),
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h(h)
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{}
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};
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typedef QList<Blit> BlitList;
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/* Calculates the minimum atlas size required to hold
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* a tileset of height 'tilesetH'. If the required dimensions
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* exceed 'maxAtlasSize', Vec2i(-1, -1) is returned. */
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Vec2i minSize(int tilesetH, int maxAtlasSize);
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/* Calculates a series of blits necessary to fill dstRows
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* with srcRows without wasting any space */
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BlitList calcBlits(int tilesetH, const Vec2i &atlasSize);
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/* Translates a tile coordinate (not pixel!) to a physical
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* pixel coordinate in the atlas */
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Vec2i tileToAtlasCoor(int tileX, int tileY, int tilesetH, int atlasH);
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}
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#endif // TILEATLAS_H
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