291 lines
10 KiB
Java
291 lines
10 KiB
Java
/*
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* This file is part of BlueMap, licensed under the MIT License (MIT).
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*
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* Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
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* Copyright (c) contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package de.bluecolored.bluemap.core.resourcepack.texture;
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import com.google.gson.*;
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import de.bluecolored.bluemap.core.logger.Logger;
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import de.bluecolored.bluemap.core.resourcepack.ParseResourceException;
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import de.bluecolored.bluemap.core.resourcepack.fileaccess.FileAccess;
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import de.bluecolored.bluemap.core.util.FileUtils;
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import de.bluecolored.bluemap.core.util.math.Color;
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import javax.imageio.ImageIO;
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import java.awt.image.BufferedImage;
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import java.io.*;
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import java.util.*;
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/**
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* A {@link TextureGallery} is managing {@link Texture}s and their id's and path's.<br>
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* I can also load and generate the texture.json file, or load new {@link Texture}s from a {@link FileAccess}.
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*/
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public class TextureGallery {
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private static final String EMPTY_BASE64 = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAQAAAC1+jfqAAAAEUlEQVR42mNkIAAYRxWMJAUAE5gAEdz4t9QAAAAASUVORK5CYII=";
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private final Map<String, Texture> textureMap;
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private final List<Texture> textureList;
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public TextureGallery() {
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textureMap = new HashMap<>();
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textureList = new ArrayList<>();
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}
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/**
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* Returns a {@link Texture} by its id, there can always be only one texture per id in a gallery.
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* @param id The texture id
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* @return The {@link Texture}
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*/
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public Texture get(int id) {
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return textureList.get(id);
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}
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/**
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* Returns a {@link Texture} by its path, there can always be only one texture per path in a gallery.
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* @param path The texture-path
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* @return The {@link Texture}
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*/
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public Texture get(String path) {
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Texture texture = textureMap.get(path);
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if (texture == null) throw new NoSuchElementException("There is no texture with the path " + path + " in this gallery!");
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return texture;
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}
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/**
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* The count of {@link Texture}s managed by this gallery
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* @return The count of textures
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*/
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public int size() {
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return textureList.size();
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}
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/**
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* Generates a texture.json file with all the {@link Texture}s in this gallery
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* @param file The file to save the json in
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* @throws IOException If an IOException occurs while writing
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*/
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public void saveTextureFile(File file) throws IOException {
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JsonArray textures = new JsonArray();
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for (int i = 0; i < textureList.size(); i++) {
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Texture texture = textureList.get(i);
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JsonObject textureNode = new JsonObject();
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textureNode.addProperty("id", texture.getPath());
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textureNode.addProperty("texture", texture.getTexture());
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textureNode.addProperty("transparent", texture.isHalfTransparent());
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Color color = texture.getColorStraight();
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JsonArray colorNode = new JsonArray();
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colorNode.add(color.r);
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colorNode.add(color.g);
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colorNode.add(color.b);
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colorNode.add(color.a);
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textureNode.add("color", colorNode);
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textures.add(textureNode);
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}
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JsonObject root = new JsonObject();
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root.add("textures", textures);
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Gson gson = new GsonBuilder()
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.setPrettyPrinting()
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.create();
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String json = gson.toJson(root);
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if (file.exists()) FileUtils.delete(file);
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FileUtils.createFile(file);
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try (FileWriter fileWriter = new FileWriter(file)) {
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fileWriter.append(json);
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fileWriter.flush();
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}
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}
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/**
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* Loads all the {@link Texture}s from the provided texture.json file, removes any existing {@link Texture}s from this gallery.
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* @param file The texture.json file.
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* @throws IOException If an IOException occurs while reading the file.
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* @throws ParseResourceException If the whole file can not be read. Errors with single textures are logged and ignored.
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*/
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public synchronized void loadTextureFile(File file) throws IOException, ParseResourceException {
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textureList.clear();
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textureMap.clear();
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try (FileReader fileReader = new FileReader(file)){
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JsonStreamParser jsonFile = new JsonStreamParser(fileReader);
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JsonArray textures = jsonFile.next().getAsJsonObject().getAsJsonArray("textures");
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int size = textures.size();
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for (int i = 0; i < size; i++) {
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while (i >= textureList.size()) { //prepopulate with placeholder so we don't get an IndexOutOfBounds below
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textureList.add(new Texture(textureList.size(), "empty", new Color(), false, EMPTY_BASE64));
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}
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try {
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JsonObject texture = textures.get(i).getAsJsonObject();
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String path = texture.get("id").getAsString();
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boolean transparent = texture.get("transparent").getAsBoolean();
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Color color = readColor(texture.get("color").getAsJsonArray());
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textureList.set(i, new Texture(i, path, color, transparent, texture.get("texture").getAsString()));
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} catch (ParseResourceException | RuntimeException ex) {
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Logger.global.logWarning("Failed to load texture with id " + i + " from texture file " + file + "!");
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}
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}
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} catch (RuntimeException ex) {
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throw new ParseResourceException("Invalid texture file format!", ex);
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} finally {
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regenerateMap();
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}
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}
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/**
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* Loads a {@link Texture} from the {@link FileAccess} and the given path and returns it.<br>
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* If there is already a {@link Texture} with this path in this Gallery it replaces the {@link Texture} with the new one
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* and the new one will have the same id as the old one.<br>
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* Otherwise the {@link Texture} will be added to the end of this gallery with the next available id.
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* @param fileAccess The {@link FileAccess} to load the image from.
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* @param path The path of the image on the {@link FileAccess}
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* @return The loaded {@link Texture}
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* @throws FileNotFoundException If there is no image in that FileAccess on that path
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* @throws IOException If an IOException occurred while loading the file
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*/
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public synchronized Texture loadTexture(FileAccess fileAccess, String path) throws FileNotFoundException, IOException {
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try (InputStream input = fileAccess.readFile(path)) {
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BufferedImage image = ImageIO.read(input);
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if (image == null) throw new IOException("Failed to read image: " + path);
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//crop off animation frames
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if (image.getHeight() > image.getWidth()){
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image = image.getSubimage(0, 0, image.getWidth(), image.getWidth());
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}
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//check halfTransparency
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boolean halfTransparent = checkHalfTransparent(image);
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//calculate color
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Color color = calculateColor(image);
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//write to Base64
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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ImageIO.write(image, "png", os);
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String base64 = "data:image/png;base64," + Base64.getEncoder().encodeToString(os.toByteArray());
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//replace if texture with this path already exists
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Texture texture = textureMap.get(path);
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if (texture != null) {
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texture = new Texture(texture.getId(), path, color, halfTransparent, base64);
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textureMap.put(path, texture);
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textureList.set(texture.getId(), texture);
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} else {
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texture = new Texture(textureList.size(), path, color, halfTransparent, base64);
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textureMap.put(path, texture);
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textureList.add(texture);
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}
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return texture;
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}
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}
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/**
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* Tries to reload all {@link Texture}s from the given {@link FileAccess}<br>
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* <br>
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* Exceptions are being logged and ignored.
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* @param fileAccess The {@link FileAccess} to load the {@link Texture}s from
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*/
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public synchronized void reloadAllTextures(FileAccess fileAccess) {
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for (Texture texture : textureList.toArray(new Texture[textureList.size()])) {
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try {
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loadTexture(fileAccess, texture.getPath());
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} catch (IOException ignored) {}
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}
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}
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private synchronized void regenerateMap() {
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textureMap.clear();
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for (int i = 0; i < textureList.size(); i++) {
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Texture texture = textureList.get(i);
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textureMap.put(texture.getPath(), texture);
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}
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}
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private Color readColor(JsonArray jsonArray) throws ParseResourceException {
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if (jsonArray.size() < 4) throw new ParseResourceException("Failed to load Vector4: Not enough values in list-node!");
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float r = jsonArray.get(0).getAsFloat();
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float g = jsonArray.get(1).getAsFloat();
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float b = jsonArray.get(2).getAsFloat();
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float a = jsonArray.get(3).getAsFloat();
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return new Color().set(r, g, b, a, false);
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}
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private boolean checkHalfTransparent(BufferedImage image){
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for (int x = 0; x < image.getWidth(); x++){
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for (int y = 0; y < image.getHeight(); y++){
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int pixel = image.getRGB(x, y);
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int alpha = (pixel >> 24) & 0xff;
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if (alpha > 0x00 && alpha < 0xff){
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return true;
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}
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}
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}
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return false;
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}
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private Color calculateColor(BufferedImage image){
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float alpha = 0f, red = 0f, green = 0f, blue = 0f;
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int count = 0;
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for (int x = 0; x < image.getWidth(); x++){
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for (int y = 0; y < image.getHeight(); y++){
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int pixel = image.getRGB(x, y);
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float pixelAlpha = ((pixel >> 24) & 0xff) / 255f;
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float pixelRed = ((pixel >> 16) & 0xff) / 255f;
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float pixelGreen = ((pixel >> 8) & 0xff) / 255f;
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float pixelBlue = (pixel & 0xff) / 255f;
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count++;
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alpha += pixelAlpha;
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red += pixelRed * pixelAlpha;
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green += pixelGreen * pixelAlpha;
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blue += pixelBlue * pixelAlpha;
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}
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}
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if (count == 0 || alpha == 0) return new Color();
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red /= alpha;
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green /= alpha;
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blue /= alpha;
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alpha /= count;
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return new Color().set(red, green, blue, alpha, false);
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}
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}
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