/*
* Copyright 2014 MovingBlocks
*
* 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 org.terasology.rendering.assets.texture;
import java.nio.ByteBuffer;
import org.terasology.math.TeraMath;
import org.terasology.rendering.assets.texture.Texture.FilterMode;
import org.terasology.rendering.assets.texture.Texture.WrapMode;
import org.terasology.rendering.nui.Color;
import org.terasology.utilities.random.FastRandom;
import org.terasology.utilities.random.Random;
/**
* Creates TextureData objects based on specific criteria
*
*/
public final class TextureDataFactory {
// Lwjgl 2.x currently requires textures to be powers of 16, although this should change in 3.0.
private static final int TEXTURE_WIDTH = 16;
private static final int TEXTURE_HEIGHT = 16;
private TextureDataFactory() {
}
/**
* Create TextureData for a Texture all of a single color.
* @param color to use for creating TextureData
* @return TextureData created using specified color
*/
public static TextureData newInstance(Color color) {
byte red = (byte) color.r();
byte green = (byte) color.g();
byte blue = (byte) color.b();
byte alpha = (byte) color.a();
ByteBuffer data = ByteBuffer.allocateDirect(4 * TEXTURE_WIDTH * TEXTURE_HEIGHT);
for (int height = 0; height < TEXTURE_HEIGHT; height++) {
for (int width = 0; width < TEXTURE_WIDTH; width++) {
data.put(red).put(green).put(blue).put(alpha);
}
}
// The buffer must be reset back to the initial position before passing it onward.
data.rewind();
return new TextureData(TEXTURE_WIDTH, TEXTURE_HEIGHT, new ByteBuffer[]{data}, WrapMode.REPEAT, FilterMode.NEAREST);
}
public static TextureData createWhiteNoiseTexture(int size, long seed, int min, int max) {
int width = size;
int height = size;
ByteBuffer data = ByteBuffer.allocateDirect(4 * width * height);
Random rng = new FastRandom(seed);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
data.put((byte) TeraMath.clamp(rng.nextInt(min, max), 0, 255));
data.put((byte) TeraMath.clamp(rng.nextInt(min, max), 0, 255));
data.put((byte) TeraMath.clamp(rng.nextInt(min, max), 0, 255));
data.put((byte) 255);
}
}
// The buffer must be reset back to the initial position before passing it onward.
data.rewind();
return new TextureData(width, height, new ByteBuffer[]{data}, WrapMode.REPEAT, FilterMode.NEAREST);
}
}