package com.warlox;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.Pixmap;
public class Heightmap {
    public final int width;
    public final int height;
    public final float[] elevations;
    public Heightmap (FileHandle file) {
        Pixmap pixmap = new Pixmap(file);
        width = pixmap.getWidth();
        height = pixmap.getHeight();
        elevations = new float[width * height];
        Color color = new Color();
        int i = 0;
        for (int y = 0; y < width; y++) {
            for (int x = 0; x < height; x++) {
                int pixel = pixmap.getPixel(x, y);
                Color.rgba8888ToColor(color, pixel);
                elevations[i] = color.r;
                i++;
            }
        }
    }
    public int index(int x, int y) {
        y = height - 1 - y;
        return y * width + x;
    }
    public float elevation(int x, int y) {
        return elevations[index(x, y)];
    }
}