62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
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#include "rectangle-packing.h"
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#include <vector>
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#include "RectanglePacker.h"
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namespace msdf_atlas {
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static void copyRectanglePlacement(Rectangle &dst, const Rectangle &src) {
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dst.x = src.x;
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dst.y = src.y;
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}
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static void copyRectanglePlacement(OrientedRectangle &dst, const OrientedRectangle &src) {
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dst.x = src.x;
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dst.y = src.y;
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dst.rotated = src.rotated;
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}
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template <typename RectangleType>
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int packRectangles(RectangleType *rectangles, int count, int width, int height, int padding) {
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if (padding)
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for (int i = 0; i < count; ++i) {
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rectangles[i].w += padding;
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rectangles[i].h += padding;
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}
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int result = RectanglePacker(width+padding, height+padding).pack(rectangles, count);
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if (padding)
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for (int i = 0; i < count; ++i) {
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rectangles[i].w -= padding;
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rectangles[i].h -= padding;
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}
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return result;
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}
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template <class SizeSelector, typename RectangleType>
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std::pair<int, int> packRectangles(RectangleType *rectangles, int count, int padding) {
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std::vector<RectangleType> rectanglesCopy(count);
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int totalArea = 0;
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for (int i = 0; i < count; ++i) {
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rectanglesCopy[i].w = rectangles[i].w+padding;
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rectanglesCopy[i].h = rectangles[i].h+padding;
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totalArea += rectangles[i].w*rectangles[i].h;
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}
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std::pair<int, int> dimensions;
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SizeSelector sizeSelector(totalArea);
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int width, height;
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while (sizeSelector(width, height)) {
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if (!RectanglePacker(width+padding, height+padding).pack(rectanglesCopy.data(), count)) {
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dimensions.first = width;
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dimensions.second = height;
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for (int i = 0; i < count; ++i)
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copyRectanglePlacement(rectangles[i], rectanglesCopy[i]);
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--sizeSelector;
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} else
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++sizeSelector;
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}
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return dimensions;
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}
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}
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