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/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.tools.texturepacker;

import java.util.Random;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import com.badlogic.gdx.math.Matrix4;
import com.badlogic.gdx.tools.texturepacker.TexturePacker.Page;
import com.badlogic.gdx.tools.texturepacker.TexturePacker.Rect;
import com.badlogic.gdx.tools.texturepacker.TexturePacker.Settings;
import com.badlogic.gdx.utils.Array;

/** @author Nathan Sweet */
public class TexturePackerTest extends ApplicationAdapter {
	ShapeRenderer renderer;
	Array pages;

	public void create () {
		renderer = new ShapeRenderer();
	}

	public void render () {
		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

		Settings settings = new Settings();
		settings.fast = false;
		settings.pot = false;
		settings.maxWidth = 1024;
		settings.maxHeight = 1024;
		settings.rotation = false;
		settings.paddingX = 0;

		if (pages == null) {
			Random random = new Random(1243);
			Array inputRects = new Array();
			for (int i = 0; i < 240; i++) {
				Rect rect = new Rect();
				rect.name = "rect" + i;
				rect.height = 16 + random.nextInt(120);
				rect.width = 16 + random.nextInt(240);
				inputRects.add(rect);
			}
			for (int i = 0; i < 10; i++) {
				Rect rect = new Rect();
				rect.name = "rect" + (40 + i);
				rect.height = 400 + random.nextInt(340);
				rect.width = 1 + random.nextInt(10);
				inputRects.add(rect);
			}

			long s = System.nanoTime();

			pages = new MaxRectsPacker(settings).pack(inputRects);

			long e = System.nanoTime();
			System.out.println("fast: " + settings.fast);
			System.out.println((e - s) / 1e6f + " ms");
			System.out.println();
		}

		int x = 20, y = 20;
		for (Page page : pages) {
			renderer.setColor(Color.GRAY);
			renderer.begin(ShapeType.Filled);
			for (int i = 0; i < page.outputRects.size; i++) {
				Rect rect = page.outputRects.get(i);
				renderer.rect(x + rect.x + settings.paddingX, y + rect.y + settings.paddingY, rect.width - settings.paddingX,
					rect.height - settings.paddingY);
			}
			renderer.end();
			renderer.setColor(Color.RED);
			renderer.begin(ShapeType.Line);
			for (int i = 0; i < page.outputRects.size; i++) {
				Rect rect = page.outputRects.get(i);
				renderer.rect(x + rect.x + settings.paddingX, y + rect.y + settings.paddingY, rect.width - settings.paddingX,
					rect.height - settings.paddingY);
			}
			renderer.setColor(Color.GREEN);
			renderer.rect(x, y, page.width + settings.paddingX * 2, page.height + settings.paddingY * 2);
			renderer.end();
			x += page.width + 20;
		}
	}

	public void resize (int width, int height) {
		renderer.setProjectionMatrix(new Matrix4().setToOrtho2D(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight()));
	}

	public static void main (String[] args) throws Exception {
		new LwjglApplication(new TexturePackerTest(), "", 640, 480);
	}
}