/* * This file is part of BlueMap, licensed under the MIT License (MIT). * * Copyright (c) Blue (Lukas Rieger) * Copyright (c) contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package de.bluecolored.bluemap.core.threejs; import com.google.gson.stream.JsonReader; import com.google.gson.stream.JsonWriter; import de.bluecolored.bluemap.core.util.Preconditions; import java.io.IOException; import java.util.ArrayList; import java.util.List; /** * Represents a ThreeJS BufferAttribute */ public class BufferAttribute { private int itemSize; private boolean normalized; private float[] values; /** * Creates a new {@link BufferAttribute} with the defined item-size */ public BufferAttribute(float[] values, int itemSize) { Preconditions.checkArgument(values.length % itemSize == 0, "The length of the values-array is not a multiple of the item-size!"); this.values = values; this.itemSize = itemSize; this.normalized = false; } /** * Creates a new {@link BufferAttribute} with the defined item-size and the * defined threejs "normalized" attribute */ public BufferAttribute(float[] values, int itemSize, boolean normalized) { Preconditions.checkArgument(values.length % itemSize == 0, "The length of the values-array is not a multiple of the item-size!"); this.values = values; this.itemSize = itemSize; this.normalized = normalized; } public void writeJson(JsonWriter json) throws IOException { json.beginObject(); json.name("type").value("Float32Array"); json.name("itemSize").value(itemSize); json.name("normalized").value(normalized); json.name("array").beginArray(); for (int i = 0; i < values.length; i++) { // rounding and remove ".0" to save string space double d = Math.round(values[i] * 10000d) / 10000d; if (d == (long) d) json.value((long) d); else json.value(d); } json.endArray(); json.endObject(); } public int getItemSize() { return this.itemSize; } public boolean isNormalized() { return this.normalized; } public int getValueCount() { return this.values.length; } public int getItemCount() { return Math.floorDiv(getValueCount(), getItemSize()); } public float[] values() { return values; } public static BufferAttribute readJson(JsonReader json) throws IOException { List list = new ArrayList<>(1000); int itemSize = 1; boolean normalized = false; json.beginObject(); //root while (json.hasNext()){ String name = json.nextName(); if(name.equals("array")){ json.beginArray(); //array while (json.hasNext()){ list.add((float) json.nextDouble()); } json.endArray(); //array } else if (name.equals("itemSize")) { itemSize = json.nextInt(); } else if (name.equals("normalized")) { normalized = json.nextBoolean(); } else json.skipValue(); } json.endObject(); //root //collect values in array float[] values = new float[list.size()]; for (int i = 0; i < values.length; i++) { values[i] = list.get(i); } return new BufferAttribute(values, itemSize, normalized); } }