/* Copyright (c) 2014-2016 Jesper Öqvist <jesper@llbit.se>
*
* This file is part of Chunky.
*
* Chunky is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Chunky is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with Chunky. If not, see <http://www.gnu.org/licenses/>.
*/
package se.llbit.chunky.map;
abstract public class BitmapLayer extends AbstractLayer {
/**
* Render this layer to a tile.
*/
@Override final public void render(MapTile tile) {
if (tile.scale == 1) {
tile.setPixel(0, 0, getAvgColor());
} else {
int[] pixels = new int[tile.scale * tile.scale];
if (tile.scale == 16) {
for (int z = 0; z < 16; ++z) {
for (int x = 0; x < 16; ++x) {
pixels[z * 16 + x] = colorAt(x, z);
}
}
} else {
float scale = tile.scale / 16.f;
float diffx = 0;
float diffz = 0;
int index = 0;
for (int z = 0; z < 16; ++z) {
while (diffz < scale) {
for (int x = 0; x < 16; ++x) {
int pixel = colorAt(x, z);
while (diffx < scale) {
pixels[index] = pixel;
index += 1;
diffx += 1;
}
diffx -= scale;
}
diffz += 1;
}
diffz -= scale;
}
}
tile.setPixels(pixels);
}
}
abstract public int colorAt(int x, int z);
}