ItemTransformVec3fDeserializer.java

package slimeknights.tconstruct.library.client.deserializer;

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 net.minecraft.client.renderer.block.model.ItemTransformVec3f;
import net.minecraft.util.JsonUtils;
import net.minecraft.util.math.MathHelper;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

import org.lwjgl.util.vector.Vector3f;

import java.lang.reflect.Type;

/**
 * Since ATs don't work properly on inner classes in CI/obf environments we simply copy the implementation
 * 1:1 copy of net.minecraft.client.renderer.block.model.ItemTransformVec3f.Deserializer
 */
@SideOnly(Side.CLIENT)
public class ItemTransformVec3fDeserializer implements JsonDeserializer<ItemTransformVec3f> {

  public static final ItemTransformVec3fDeserializer INSTANCE = new ItemTransformVec3fDeserializer();

  private static final Vector3f ROTATION_DEFAULT = new Vector3f(0.0F, 0.0F, 0.0F);
  private static final Vector3f TRANSLATION_DEFAULT = new Vector3f(0.0F, 0.0F, 0.0F);
  private static final Vector3f SCALE_DEFAULT = new Vector3f(1.0F, 1.0F, 1.0F);

  @Override
  public ItemTransformVec3f deserialize(JsonElement p_deserialize_1_, Type p_deserialize_2_, JsonDeserializationContext p_deserialize_3_)
      throws
      JsonParseException {
    JsonObject jsonobject = p_deserialize_1_.getAsJsonObject();
    Vector3f vector3f = this.parseVector3f(jsonobject, "rotation", ROTATION_DEFAULT);
    Vector3f vector3f1 = this.parseVector3f(jsonobject, "translation", TRANSLATION_DEFAULT);
    vector3f1.scale(0.0625F);
    vector3f1.x = MathHelper.clamp(vector3f1.x, -5.0F, 5.0F);
    vector3f1.y = MathHelper.clamp(vector3f1.y, -5.0F, 5.0F);
    vector3f1.z = MathHelper.clamp(vector3f1.z, -5.0F, 5.0F);
    Vector3f vector3f2 = this.parseVector3f(jsonobject, "scale", SCALE_DEFAULT);
    vector3f2.x = MathHelper.clamp(vector3f2.x, -4.0F, 4.0F);
    vector3f2.y = MathHelper.clamp(vector3f2.y, -4.0F, 4.0F);
    vector3f2.z = MathHelper.clamp(vector3f2.z, -4.0F, 4.0F);
    return new ItemTransformVec3f(vector3f, vector3f1, vector3f2);
  }

  private Vector3f parseVector3f(JsonObject jsonObject, String key, Vector3f defaultValue) {
    if(!jsonObject.has(key)) {
      return defaultValue;
    }
    else {
      JsonArray jsonarray = JsonUtils.getJsonArray(jsonObject, key);

      if(jsonarray.size() != 3) {
        throw new JsonParseException("Expected 3 " + key + " values, found: " + jsonarray.size());
      }
      else {
        float[] afloat = new float[3];

        for(int i = 0; i < afloat.length; ++i) {
          afloat[i] = JsonUtils.getFloat(jsonarray.get(i), key + "[" + i + "]");
        }

        return new Vector3f(afloat[0], afloat[1], afloat[2]);
      }
    }
  }
}