195 lines
8.6 KiB
Java
195 lines
8.6 KiB
Java
package com.mojang.math;
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import com.mojang.datafixers.util.Pair;
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import it.unimi.dsi.fastutil.booleans.BooleanArrayList;
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import it.unimi.dsi.fastutil.booleans.BooleanList;
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import java.util.Arrays;
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import java.util.Map;
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import java.util.stream.Collectors;
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import net.minecraft.Util;
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import net.minecraft.core.Direction;
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import net.minecraft.core.FrontAndTop;
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import net.minecraft.util.StringRepresentable;
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import org.jetbrains.annotations.Nullable;
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import org.joml.Matrix3f;
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import org.joml.Matrix3fc;
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public enum OctahedralGroup implements StringRepresentable {
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IDENTITY("identity", SymmetricGroup3.P123, false, false, false),
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ROT_180_FACE_XY("rot_180_face_xy", SymmetricGroup3.P123, true, true, false),
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ROT_180_FACE_XZ("rot_180_face_xz", SymmetricGroup3.P123, true, false, true),
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ROT_180_FACE_YZ("rot_180_face_yz", SymmetricGroup3.P123, false, true, true),
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ROT_120_NNN("rot_120_nnn", SymmetricGroup3.P231, false, false, false),
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ROT_120_NNP("rot_120_nnp", SymmetricGroup3.P312, true, false, true),
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ROT_120_NPN("rot_120_npn", SymmetricGroup3.P312, false, true, true),
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ROT_120_NPP("rot_120_npp", SymmetricGroup3.P231, true, false, true),
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ROT_120_PNN("rot_120_pnn", SymmetricGroup3.P312, true, true, false),
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ROT_120_PNP("rot_120_pnp", SymmetricGroup3.P231, true, true, false),
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ROT_120_PPN("rot_120_ppn", SymmetricGroup3.P231, false, true, true),
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ROT_120_PPP("rot_120_ppp", SymmetricGroup3.P312, false, false, false),
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ROT_180_EDGE_XY_NEG("rot_180_edge_xy_neg", SymmetricGroup3.P213, true, true, true),
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ROT_180_EDGE_XY_POS("rot_180_edge_xy_pos", SymmetricGroup3.P213, false, false, true),
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ROT_180_EDGE_XZ_NEG("rot_180_edge_xz_neg", SymmetricGroup3.P321, true, true, true),
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ROT_180_EDGE_XZ_POS("rot_180_edge_xz_pos", SymmetricGroup3.P321, false, true, false),
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ROT_180_EDGE_YZ_NEG("rot_180_edge_yz_neg", SymmetricGroup3.P132, true, true, true),
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ROT_180_EDGE_YZ_POS("rot_180_edge_yz_pos", SymmetricGroup3.P132, true, false, false),
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ROT_90_X_NEG("rot_90_x_neg", SymmetricGroup3.P132, false, false, true),
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ROT_90_X_POS("rot_90_x_pos", SymmetricGroup3.P132, false, true, false),
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ROT_90_Y_NEG("rot_90_y_neg", SymmetricGroup3.P321, true, false, false),
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ROT_90_Y_POS("rot_90_y_pos", SymmetricGroup3.P321, false, false, true),
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ROT_90_Z_NEG("rot_90_z_neg", SymmetricGroup3.P213, false, true, false),
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ROT_90_Z_POS("rot_90_z_pos", SymmetricGroup3.P213, true, false, false),
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INVERSION("inversion", SymmetricGroup3.P123, true, true, true),
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INVERT_X("invert_x", SymmetricGroup3.P123, true, false, false),
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INVERT_Y("invert_y", SymmetricGroup3.P123, false, true, false),
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INVERT_Z("invert_z", SymmetricGroup3.P123, false, false, true),
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ROT_60_REF_NNN("rot_60_ref_nnn", SymmetricGroup3.P312, true, true, true),
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ROT_60_REF_NNP("rot_60_ref_nnp", SymmetricGroup3.P231, true, false, false),
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ROT_60_REF_NPN("rot_60_ref_npn", SymmetricGroup3.P231, false, false, true),
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ROT_60_REF_NPP("rot_60_ref_npp", SymmetricGroup3.P312, false, false, true),
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ROT_60_REF_PNN("rot_60_ref_pnn", SymmetricGroup3.P231, false, true, false),
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ROT_60_REF_PNP("rot_60_ref_pnp", SymmetricGroup3.P312, true, false, false),
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ROT_60_REF_PPN("rot_60_ref_ppn", SymmetricGroup3.P312, false, true, false),
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ROT_60_REF_PPP("rot_60_ref_ppp", SymmetricGroup3.P231, true, true, true),
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SWAP_XY("swap_xy", SymmetricGroup3.P213, false, false, false),
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SWAP_YZ("swap_yz", SymmetricGroup3.P132, false, false, false),
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SWAP_XZ("swap_xz", SymmetricGroup3.P321, false, false, false),
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SWAP_NEG_XY("swap_neg_xy", SymmetricGroup3.P213, true, true, false),
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SWAP_NEG_YZ("swap_neg_yz", SymmetricGroup3.P132, false, true, true),
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SWAP_NEG_XZ("swap_neg_xz", SymmetricGroup3.P321, true, false, true),
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ROT_90_REF_X_NEG("rot_90_ref_x_neg", SymmetricGroup3.P132, true, false, true),
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ROT_90_REF_X_POS("rot_90_ref_x_pos", SymmetricGroup3.P132, true, true, false),
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ROT_90_REF_Y_NEG("rot_90_ref_y_neg", SymmetricGroup3.P321, true, true, false),
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ROT_90_REF_Y_POS("rot_90_ref_y_pos", SymmetricGroup3.P321, false, true, true),
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ROT_90_REF_Z_NEG("rot_90_ref_z_neg", SymmetricGroup3.P213, false, true, true),
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ROT_90_REF_Z_POS("rot_90_ref_z_pos", SymmetricGroup3.P213, true, false, true);
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private static final Direction.Axis[] AXES = Direction.Axis.values();
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private final Matrix3fc transformation;
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private final String name;
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@Nullable
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private Map<Direction, Direction> rotatedDirections;
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private final boolean invertX;
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private final boolean invertY;
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private final boolean invertZ;
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private final SymmetricGroup3 permutation;
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private static final OctahedralGroup[][] CAYLEY_TABLE = Util.make(
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new OctahedralGroup[values().length][values().length],
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octahedralGroups -> {
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Map<Pair<SymmetricGroup3, BooleanList>, OctahedralGroup> map = (Map<Pair<SymmetricGroup3, BooleanList>, OctahedralGroup>)Arrays.stream(values())
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.collect(
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Collectors.toMap(octahedralGroupx -> Pair.of(octahedralGroupx.permutation, octahedralGroupx.packInversions()), octahedralGroupx -> octahedralGroupx)
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);
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for (OctahedralGroup octahedralGroup : values()) {
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for (OctahedralGroup octahedralGroup2 : values()) {
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BooleanList booleanList = octahedralGroup.packInversions();
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BooleanList booleanList2 = octahedralGroup2.packInversions();
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SymmetricGroup3 symmetricGroup3 = octahedralGroup2.permutation.compose(octahedralGroup.permutation);
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BooleanArrayList booleanArrayList = new BooleanArrayList(3);
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for (int i = 0; i < 3; i++) {
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booleanArrayList.add(booleanList.getBoolean(i) ^ booleanList2.getBoolean(octahedralGroup.permutation.permutation(i)));
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}
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octahedralGroups[octahedralGroup.ordinal()][octahedralGroup2.ordinal()] = (OctahedralGroup)map.get(Pair.of(symmetricGroup3, booleanArrayList));
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}
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}
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}
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);
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private static final OctahedralGroup[] INVERSE_TABLE = (OctahedralGroup[])Arrays.stream(values())
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.map(
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octahedralGroup -> (OctahedralGroup)Arrays.stream(values())
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.filter(octahedralGroup2 -> octahedralGroup.compose(octahedralGroup2) == IDENTITY)
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.findAny()
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.get()
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)
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.toArray(OctahedralGroup[]::new);
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private static final OctahedralGroup[][] XY_TABLE = Util.make(new OctahedralGroup[Quadrant.values().length][Quadrant.values().length], octahedralGroups -> {
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for (Quadrant quadrant : Quadrant.values()) {
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for (Quadrant quadrant2 : Quadrant.values()) {
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OctahedralGroup octahedralGroup = IDENTITY;
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for (int i = 0; i < quadrant2.shift; i++) {
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octahedralGroup = octahedralGroup.compose(ROT_90_Y_NEG);
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}
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for (int i = 0; i < quadrant.shift; i++) {
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octahedralGroup = octahedralGroup.compose(ROT_90_X_NEG);
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}
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octahedralGroups[quadrant.ordinal()][quadrant2.ordinal()] = octahedralGroup;
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}
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}
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});
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private OctahedralGroup(final String name, final SymmetricGroup3 permutation, final boolean invertX, final boolean invertY, final boolean invertZ) {
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this.name = name;
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this.invertX = invertX;
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this.invertY = invertY;
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this.invertZ = invertZ;
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this.permutation = permutation;
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Matrix3f matrix3f = new Matrix3f().scaling(invertX ? -1.0F : 1.0F, invertY ? -1.0F : 1.0F, invertZ ? -1.0F : 1.0F);
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matrix3f.mul(permutation.transformation());
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this.transformation = matrix3f;
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}
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private BooleanList packInversions() {
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return new BooleanArrayList(new boolean[]{this.invertX, this.invertY, this.invertZ});
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}
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public OctahedralGroup compose(OctahedralGroup other) {
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return CAYLEY_TABLE[this.ordinal()][other.ordinal()];
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}
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public OctahedralGroup inverse() {
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return INVERSE_TABLE[this.ordinal()];
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}
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public Matrix3fc transformation() {
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return this.transformation;
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}
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public String toString() {
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return this.name;
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}
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@Override
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public String getSerializedName() {
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return this.name;
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}
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public Direction rotate(Direction direction) {
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if (this.rotatedDirections == null) {
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this.rotatedDirections = Util.makeEnumMap(Direction.class, directionx -> {
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Direction.Axis axis = directionx.getAxis();
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Direction.AxisDirection axisDirection = directionx.getAxisDirection();
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Direction.Axis axis2 = this.permute(axis);
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Direction.AxisDirection axisDirection2 = this.inverts(axis2) ? axisDirection.opposite() : axisDirection;
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return Direction.fromAxisAndDirection(axis2, axisDirection2);
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});
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}
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return (Direction)this.rotatedDirections.get(direction);
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}
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public boolean inverts(Direction.Axis axis) {
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return switch (axis) {
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case X -> this.invertX;
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case Y -> this.invertY;
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case Z -> this.invertZ;
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};
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}
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public Direction.Axis permute(Direction.Axis axis) {
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return AXES[this.permutation.permutation(axis.ordinal())];
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}
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public FrontAndTop rotate(FrontAndTop frontAndTop) {
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return FrontAndTop.fromFrontAndTop(this.rotate(frontAndTop.front()), this.rotate(frontAndTop.top()));
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}
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public static OctahedralGroup fromXYAngles(Quadrant x, Quadrant y) {
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return XY_TABLE[x.ordinal()][y.ordinal()];
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}
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}
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