58 lines
2.4 KiB
Java
58 lines
2.4 KiB
Java
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(
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Util.mapValues(VANILLA_UV_TRANSFORM_LOCAL_TO_GLOBAL, Transformation::inverse)
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);
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public static Transformation blockCenterToCorner(Transformation transformation) {
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Matrix4f matrix4f = new Matrix4f().translation(0.5F, 0.5F, 0.5F);
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matrix4f.mul(transformation.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 transformation) {
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Matrix4f matrix4f = new Matrix4f().translation(-0.5F, -0.5F, -0.5F);
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matrix4f.mul(transformation.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 transformation, Direction direction) {
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if (MatrixUtil.isIdentity(transformation.getMatrix())) {
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return transformation;
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} else {
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Transformation transformation2 = (Transformation)VANILLA_UV_TRANSFORM_LOCAL_TO_GLOBAL.get(direction);
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transformation2 = transformation.compose(transformation2);
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Vector3f vector3f = transformation2.getMatrix().transformDirection(new Vector3f(0.0F, 0.0F, 1.0F));
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Direction direction2 = Direction.getApproximateNearest(vector3f.x, vector3f.y, vector3f.z);
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return ((Transformation)VANILLA_UV_TRANSFORM_GLOBAL_TO_LOCAL.get(direction2)).compose(transformation2);
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}
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}
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}
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