Add lazyloading util class and cache blockcolor-calculation to improve render-speed

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/render/hires/blockmodel/ResourceModelBuilder.java

@@ -44,6 +44,7 @@
 import de.bluecolored.bluemap.core.resourcepack.Texture;
 import de.bluecolored.bluemap.core.resourcepack.TransformedBlockModelResource;
 import de.bluecolored.bluemap.core.util.Direction;
+import de.bluecolored.bluemap.core.util.Lazy;
 import de.bluecolored.bluemap.core.world.Block;
 
 /**
@@ -58,16 +59,20 @@ public class ResourceModelBuilder {
 	private ExtendedBlockContext context;
 	private RenderSettings renderSettings;
 	private BlockColorCalculator colorCalculator;
+	private Lazy<Vector3f> tintColor;
 	
 	public ResourceModelBuilder(RenderSettings renderSettings, ExtendedBlockContext context, BlockColorCalculator colorCalculator) {
 		this.context = context;
 		this.renderSettings = renderSettings;
 		this.colorCalculator = colorCalculator;
+		this.tintColor = new Lazy<>(() -> colorCalculator.getBlockColor(context));
 	}
 	
 	public BlockStateModel build(TransformedBlockModelResource bmr) {
 		BlockStateModel model = new BlockStateModel();
 		
+		colorCalculator.getBlockColor(context);
+		
 		for (BlockModelResource.Element element : bmr.getModel().getElements()){
 			model.merge(fromModelElementResource(element, bmr));
 		}
@@ -213,7 +218,7 @@ private void createElementFace(BlockStateModel model, TransformedBlockModelResou
 		//tint the face
 		Vector3f color = Vector3f.ONE;
 		if (face.isTinted()){
-			color = colorCalculator.getBlockColor(context); //TODO: cache this so we don't recalculate the tint color again for each face?
+			color = tintColor.getValue();
 		}
 	
 		color = color.mul(light);

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/util/Lazy.java

@@ -0,0 +1,56 @@
+/*
+ * This file is part of BlueMap, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
+ * 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.util;
+
+import java.util.function.Supplier;
+
+public class Lazy<T> {
+
+	private Supplier<T> loader;
+	private T value;
+	
+	public Lazy(Supplier<T> loader) {
+		this.loader = loader;
+		this.value = null;
+	}
+	
+	public Lazy(T value) {
+		this.loader = null;
+		this.value = value;
+	}
+	
+	public T getValue() {
+		if (!isLoaded()) {
+			this.value = loader.get();
+		}
+		
+		return this.value;
+	}
+	
+	public boolean isLoaded() {
+		return this.value != null;
+	}
+	
+}