/** getTiles
*
* Given a map gets the tiles for the map
*/
int HandlerUtils::GetTiles(const Map& map, Magick::Image& tileset, std::vector<Magick::Image>& tiles)
{
int numTilesX = tileset.columns() / map.GetTileWidth();
int numTilesY = tileset.rows() / map.GetTileHeight();
tiles.reserve(numTilesX * numTilesY);
for (int i = 0; i < numTilesY; i++)
{
for (int j = 0; j < numTilesX; j++)
{
Magick::Geometry dim(map.GetTileWidth(), map.GetTileHeight(), j * map.GetTileWidth(), i * map.GetTileHeight());
int index = i * numTilesX + j;
tiles[index] = tileset;
tiles[index].crop(dim);
}
}
return 0;
}
/** layerToImage
*
* Converts a layer into an ImageMagick Image
*/
int HandlerUtils::LayerToImage(const Map& map, const Layer& layer, std::vector<Magick::Image>& tiles,
Magick::Image& image)
{
for (unsigned int i = 0; i < map.GetHeight(); i++)
{
for (unsigned int j = 0; j < map.GetWidth(); j++)
{
int index = i * map.GetWidth() + j;
int tile = layer[index];
if (tile == -1)
continue;
image.composite(tiles[tile], j * map.GetTileWidth(), i * map.GetTileHeight(), Magick::AtopCompositeOp);
}
}
return 0;
}
/** layerToImage
*
* Converts a layer into an ImageMagick Image
*/
int HandlerUtils::LayerToImage(const Map& map, const Layer& layer, Magick::Image& image)
{
std::vector<Magick::Image> tiles;
if (HandlerUtils::GetTiles(map, tiles))
return -1;
Magick::Color color = Magick::ColorRGB(0, 0, 0);
color.alpha(0);
int width = map.GetWidth() * map.GetTileWidth();
int height = map.GetHeight() * map.GetTileHeight();
image.matte(true);
image.resize(Magick::Geometry(width, height));
image.backgroundColor(color);
image.erase();
return HandlerUtils::LayerToImage(map, layer, tiles, image);
}