content: package net.minecraft.client.renderer.tileentity;
  
  import net.minecraft.client.model.ModelSkeletonHead;
  import net.minecraft.client.renderer.GlStateManager;
  import net.minecraft.client.renderer.entity.Render;
  import net.minecraft.client.renderer.entity.RenderManager;
  import net.minecraft.entity.projectile.EntityWitherSkull;
  import net.minecraft.util.ResourceLocation;
  
  public class RenderWitherSkull extends Render<EntityWitherSkull> {
      private static final ResourceLocation invulnerableWitherTextures = new ResourceLocation("textures/entity/wither/wither_invulnerable.png");
      private static final ResourceLocation witherTextures = new ResourceLocation("textures/entity/wither/wither.png");
      private final ModelSkeletonHead skeletonHeadModel = new ModelSkeletonHead();
  
      public RenderWitherSkull(RenderManager renderManagerIn) {
          super(renderManagerIn);
      }
  
      private float func_82400_a(float p_82400_1_, float p_82400_2_, float p_82400_3_) {
          float f;
  
          for (f = p_82400_2_ - p_82400_1_; f < -180.0F; f += 360.0F) {
          }
  
          while (f >= 180.0F) {
              f -= 360.0F;
          }
  
          return p_82400_1_ + p_82400_3_ * f;
      }
  
      public void doRender(EntityWitherSkull entity, double x, double y, double z, float entityYaw, float partialTicks) {
          GlStateManager.pushMatrix();
          GlStateManager.disableCull();
          float f = this.func_82400_a(entity.prevRotationYaw, entity.rotationYaw, partialTicks);
          float f1 = entity.prevRotationPitch + (entity.rotationPitch - entity.prevRotationPitch) * partialTicks;
          GlStateManager.translate((float) x, (float) y, (float) z);
          float f2 = 0.0625F;
          GlStateManager.enableRescaleNormal();
          GlStateManager.scale(-1.0F, -1.0F, 1.0F);
          GlStateManager.enableAlpha();
          this.bindEntityTexture(entity);
          this.skeletonHeadModel.render(entity, 0.0F, 0.0F, 0.0F, f, f1, f2);
          GlStateManager.popMatrix();
          super.doRender(entity, x, y, z, entityYaw, partialTicks);
      }
  
      protected ResourceLocation getEntityTexture(EntityWitherSkull entity) {
          return entity.isInvulnerable() ? invulnerableWitherTextures : witherTextures;
      }
  }
  