56 lines
2.6 KiB
Java
56 lines
2.6 KiB
Java
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package net.minecraft.core;
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import com.google.common.collect.Maps;
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import com.mojang.math.MatrixUtil;
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import com.mojang.math.Transformation;
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import java.util.Map;
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import net.minecraft.Util;
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import org.joml.Matrix4f;
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import org.joml.Quaternionf;
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import org.joml.Vector3f;
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public class BlockMath {
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private static final Map<Direction, Transformation> VANILLA_UV_TRANSFORM_LOCAL_TO_GLOBAL = Maps.newEnumMap(
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Map.of(
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Direction.SOUTH,
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Transformation.identity(),
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Direction.EAST,
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new Transformation(null, new Quaternionf().rotateY((float) (Math.PI / 2)), null, null),
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Direction.WEST,
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new Transformation(null, new Quaternionf().rotateY((float) (-Math.PI / 2)), null, null),
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Direction.NORTH,
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new Transformation(null, new Quaternionf().rotateY((float) Math.PI), null, null),
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Direction.UP,
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new Transformation(null, new Quaternionf().rotateX((float) (-Math.PI / 2)), null, null),
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Direction.DOWN,
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new Transformation(null, new Quaternionf().rotateX((float) (Math.PI / 2)), null, null)
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)
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);
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private static final Map<Direction, Transformation> VANILLA_UV_TRANSFORM_GLOBAL_TO_LOCAL = Maps.newEnumMap(Util.mapValues(VANILLA_UV_TRANSFORM_LOCAL_TO_GLOBAL, Transformation::inverse));
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public static Transformation blockCenterToCorner(Transformation p_121843_) {
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Matrix4f matrix4f = new Matrix4f().translation(0.5F, 0.5F, 0.5F);
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matrix4f.mul(p_121843_.getMatrix());
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matrix4f.translate(-0.5F, -0.5F, -0.5F);
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return new Transformation(matrix4f);
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}
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public static Transformation blockCornerToCenter(Transformation p_175260_) {
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Matrix4f matrix4f = new Matrix4f().translation(-0.5F, -0.5F, -0.5F);
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matrix4f.mul(p_175260_.getMatrix());
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matrix4f.translate(0.5F, 0.5F, 0.5F);
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return new Transformation(matrix4f);
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}
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public static Transformation getFaceTransformation(Transformation p_392937_, Direction p_392969_) {
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if (MatrixUtil.isIdentity(p_392937_.getMatrix())) {
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return p_392937_;
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} else {
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Transformation transformation = VANILLA_UV_TRANSFORM_LOCAL_TO_GLOBAL.get(p_392969_);
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transformation = p_392937_.compose(transformation);
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Vector3f vector3f = transformation.getMatrix().transformDirection(new Vector3f(0.0F, 0.0F, 1.0F));
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Direction direction = Direction.getApproximateNearest(vector3f.x, vector3f.y, vector3f.z);
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return VANILLA_UV_TRANSFORM_GLOBAL_TO_LOCAL.get(direction).compose(transformation);
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}
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}
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}
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