141 lines
4.9 KiB
C++
141 lines
4.9 KiB
C++
#include "TextureSheet.h"
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bool pixmapSortFunc(const std::pair<QString, boost::shared_ptr<QPixmap>>& pixmap1, const std::pair<QString, boost::shared_ptr<QPixmap>>& pixmap2)
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{
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return pixmap1.second->width() * pixmap1.second->height() > pixmap2.second->width() * pixmap2.second->height();
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}
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bool resultTexturePositionsSortFunc(const std::pair<QString, TexCoordRect>& result1, const std::pair<QString, TexCoordRect>& result2)
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{
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return result1.first < result2.first;
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}
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void TextureSheet::Calculate(int width, int height)
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{
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spaceAreaArr.clear();
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resultTexturePositions.clear();
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std::sort(pixmapArray.begin(), pixmapArray.end(), &pixmapSortFunc);
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resultPixmap = boost::shared_ptr<QPixmap>(new QPixmap(width, height));
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QColor transparentColor(0,0,0,0);
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resultPixmap->fill(transparentColor);
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spaceAreaArr.push_back(SpaceArea(0,0,width,height));
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QPainter p;
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p.begin(&(*resultPixmap));
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for (std::vector<std::pair<QString, boost::shared_ptr<QPixmap>>>::iterator pixmapItr = pixmapArray.begin(); pixmapItr != pixmapArray.end(); pixmapItr++)
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{
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boost::shared_ptr<QPixmap> selectedPixmap = pixmapItr->second;
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int foundIndex = -1;
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for (size_t i = 0; i < spaceAreaArr.size(); i++)
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{
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if (spaceAreaArr[i].Width >= selectedPixmap->width()
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&& spaceAreaArr[i].Height >= selectedPixmap->height()
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&& (foundIndex == -1 ||
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spaceAreaArr[i].Width*spaceAreaArr[i].Height < spaceAreaArr[foundIndex].Width*spaceAreaArr[foundIndex].Height))
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{
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foundIndex = i;
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}
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}
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if (foundIndex != -1)
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{
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//split space
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SpaceArea rightSpaceArea(spaceAreaArr[foundIndex].posX + selectedPixmap->width(),
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spaceAreaArr[foundIndex].posY,
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spaceAreaArr[foundIndex].Width - selectedPixmap->width(),
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selectedPixmap->height());
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SpaceArea topSpaceArea(spaceAreaArr[foundIndex].posX,
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spaceAreaArr[foundIndex].posY + selectedPixmap->height(),
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spaceAreaArr[foundIndex].Width,
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spaceAreaArr[foundIndex].Height - selectedPixmap->height());
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p.drawPixmap(spaceAreaArr[foundIndex].posX, spaceAreaArr[foundIndex].posY, *selectedPixmap);
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TexCoordRect texCoordRect(spaceAreaArr[foundIndex].posX / static_cast<float>(width),
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spaceAreaArr[foundIndex].posY / static_cast<float>(height),
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(spaceAreaArr[foundIndex].posX + selectedPixmap->width()) / static_cast<float>(width),
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(spaceAreaArr[foundIndex].posY + selectedPixmap->height()) / static_cast<float>(height));
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texCoordRect.texCoordFromY = 1.f - texCoordRect.texCoordFromY;
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texCoordRect.texCoordToY = 1.f - texCoordRect.texCoordToY;
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float temp = texCoordRect.texCoordFromY;
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texCoordRect.texCoordFromY = texCoordRect.texCoordToY;
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texCoordRect.texCoordToY = temp;
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resultTexturePositions.push_back(std::pair<QString, TexCoordRect>(pixmapItr->first, texCoordRect));
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spaceAreaArr.erase(spaceAreaArr.begin() + foundIndex);
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spaceAreaArr.push_back(rightSpaceArea);
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spaceAreaArr.push_back(topSpaceArea);
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}
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else
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{
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throw std::runtime_error("Not enough space");
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}
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}
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}
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QString TextureSheet::GetCalculatedXml()
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{
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QString result;
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result = "<TextureSheet>\n\t<TextureElements>\n";
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std::sort(imageNamesArray.begin(), imageNamesArray.end());
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std::sort(resultTexturePositions.begin(), resultTexturePositions.end(), &resultTexturePositionsSortFunc);
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for (size_t i = 0; i < imageNamesArray.size(); i++)
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{
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result += QString("\t\t<Texture><Name>%1</Name><TexCoordFrom x='%2' y='%3'/><TexCoordTo x='%4' y='%5'/></Texture>\n")
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.arg(imageNamesArray[i])
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.arg(QString::number(resultTexturePositions[i].second.texCoordFromX))
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.arg(QString::number(resultTexturePositions[i].second.texCoordFromY))
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.arg(QString::number(resultTexturePositions[i].second.texCoordToX))
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.arg(QString::number(resultTexturePositions[i].second.texCoordToY));
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}
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result += "\t</TextureElements>\n</TextureSheet>";
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return result;
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}
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void TextureSheet::Clear()
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{
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spaceAreaArr.clear();
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resultTexturePositions.clear();
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pixmapArray.clear();
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imageNamesArray.clear();
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resultPixmap = boost::shared_ptr<QPixmap>(new QPixmap(4,4));
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QColor transparentColor(0,0,0,0);
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resultPixmap->fill(transparentColor);
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}
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