minecraft_25w45a_unobfuscated/net/minecraft/client/renderer/block/model/BlockElement.java

/*
 * Decompiled with CFR 0.152.
 * 
 * Could not load the following classes:
 *  com.google.common.collect.Maps
 *  com.google.gson.JsonArray
 *  com.google.gson.JsonDeserializationContext
 *  com.google.gson.JsonDeserializer
 *  com.google.gson.JsonElement
 *  com.google.gson.JsonObject
 *  com.google.gson.JsonParseException
 *  org.joml.Vector3f
 *  org.joml.Vector3fc
 *  org.jspecify.annotations.Nullable
 */
package net.minecraft.client.renderer.block.model;

import com.google.common.collect.Maps;
import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import java.lang.reflect.Type;
import java.util.EnumMap;
import java.util.Locale;
import java.util.Map;
import net.minecraft.client.renderer.block.model.BlockElementFace;
import net.minecraft.client.renderer.block.model.BlockElementRotation;
import net.minecraft.core.Direction;
import net.minecraft.util.GsonHelper;
import net.minecraft.util.Mth;
import org.joml.Vector3f;
import org.joml.Vector3fc;
import org.jspecify.annotations.Nullable;

public record BlockElement(Vector3fc from, Vector3fc to, Map<Direction, BlockElementFace> faces, @Nullable BlockElementRotation rotation, boolean shade, int lightEmission) {
    private static final boolean DEFAULT_RESCALE = false;
    private static final float MIN_EXTENT = -16.0f;
    private static final float MAX_EXTENT = 32.0f;

    public BlockElement(Vector3fc from, Vector3fc to, Map<Direction, BlockElementFace> faces) {
        this(from, to, faces, null, true, 0);
    }

    protected static class Deserializer
    implements JsonDeserializer<BlockElement> {
        private static final boolean DEFAULT_SHADE = true;
        private static final int DEFAULT_LIGHT_EMISSION = 0;

        protected Deserializer() {
        }

        public BlockElement deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
            JsonObject object = json.getAsJsonObject();
            Vector3f from = this.getFrom(object);
            Vector3f to = this.getTo(object);
            BlockElementRotation rotation = this.getRotation(object);
            Map<Direction, BlockElementFace> faces = this.getFaces(context, object);
            if (object.has("shade") && !GsonHelper.isBooleanValue(object, "shade")) {
                throw new JsonParseException("Expected shade to be a Boolean");
            }
            boolean shade = GsonHelper.getAsBoolean(object, "shade", true);
            int lightEmission = 0;
            if (object.has("light_emission")) {
                boolean isNumber = GsonHelper.isNumberValue(object, "light_emission");
                if (isNumber) {
                    lightEmission = GsonHelper.getAsInt(object, "light_emission");
                }
                if (!isNumber || lightEmission < 0 || lightEmission > 15) {
                    throw new JsonParseException("Expected light_emission to be an Integer between (inclusive) 0 and 15");
                }
            }
            return new BlockElement((Vector3fc)from, (Vector3fc)to, faces, rotation, shade, lightEmission);
        }

        private @Nullable BlockElementRotation getRotation(JsonObject object) {
            BlockElementRotation rotation = null;
            if (object.has("rotation")) {
                JsonObject rotationObject = GsonHelper.getAsJsonObject(object, "rotation");
                Vector3f origin = this.getVector3f(rotationObject, "origin");
                origin.mul(0.0625f);
                Direction.Axis axis = this.getAxis(rotationObject);
                float angle = this.getAngle(rotationObject);
                boolean rescale = GsonHelper.getAsBoolean(rotationObject, "rescale", false);
                rotation = new BlockElementRotation((Vector3fc)origin, axis, angle, rescale);
            }
            return rotation;
        }

        private float getAngle(JsonObject object) {
            float angle = GsonHelper.getAsFloat(object, "angle");
            if (Mth.abs(angle) > 45.0f) {
                throw new JsonParseException("Invalid rotation " + angle + " found, only values in [-45,45] range allowed");
            }
            return angle;
        }

        private Direction.Axis getAxis(JsonObject object) {
            String axisName = GsonHelper.getAsString(object, "axis");
            Direction.Axis axis = Direction.Axis.byName(axisName.toLowerCase(Locale.ROOT));
            if (axis == null) {
                throw new JsonParseException("Invalid rotation axis: " + axisName);
            }
            return axis;
        }

        private Map<Direction, BlockElementFace> getFaces(JsonDeserializationContext context, JsonObject object) {
            Map<Direction, BlockElementFace> faces = this.filterNullFromFaces(context, object);
            if (faces.isEmpty()) {
                throw new JsonParseException("Expected between 1 and 6 unique faces, got 0");
            }
            return faces;
        }

        private Map<Direction, BlockElementFace> filterNullFromFaces(JsonDeserializationContext context, JsonObject object) {
            EnumMap result = Maps.newEnumMap(Direction.class);
            JsonObject faceObjects = GsonHelper.getAsJsonObject(object, "faces");
            for (Map.Entry entry : faceObjects.entrySet()) {
                Direction direction = this.getFacing((String)entry.getKey());
                result.put(direction, (BlockElementFace)context.deserialize((JsonElement)entry.getValue(), BlockElementFace.class));
            }
            return result;
        }

        private Direction getFacing(String name) {
            Direction direction = Direction.byName(name);
            if (direction == null) {
                throw new JsonParseException("Unknown facing: " + name);
            }
            return direction;
        }

        private Vector3f getTo(JsonObject object) {
            Vector3f to = this.getVector3f(object, "to");
            if (to.x() < -16.0f || to.y() < -16.0f || to.z() < -16.0f || to.x() > 32.0f || to.y() > 32.0f || to.z() > 32.0f) {
                throw new JsonParseException("'to' specifier exceeds the allowed boundaries: " + String.valueOf(to));
            }
            return to;
        }

        private Vector3f getFrom(JsonObject object) {
            Vector3f from = this.getVector3f(object, "from");
            if (from.x() < -16.0f || from.y() < -16.0f || from.z() < -16.0f || from.x() > 32.0f || from.y() > 32.0f || from.z() > 32.0f) {
                throw new JsonParseException("'from' specifier exceeds the allowed boundaries: " + String.valueOf(from));
            }
            return from;
        }

        private Vector3f getVector3f(JsonObject object, String key) {
            JsonArray vecArray = GsonHelper.getAsJsonArray(object, key);
            if (vecArray.size() != 3) {
                throw new JsonParseException("Expected 3 " + key + " values, found: " + vecArray.size());
            }
            float[] elements = new float[3];
            for (int i = 0; i < elements.length; ++i) {
                elements[i] = GsonHelper.convertToFloat(vecArray.get(i), key + "[" + i + "]");
            }
            return new Vector3f(elements[0], elements[1], elements[2]);
        }
    }
}