1 files changed, 18 insertions, 0 deletions
diff --git a/src/main/java/me/shedaniel/rei/api/Renderable.java b/src/main/java/me/shedaniel/rei/api/Renderable.java
index 35c9890b8..9059af798 100644
--- a/src/main/java/me/shedaniel/rei/api/Renderable.java
+++ b/src/main/java/me/shedaniel/rei/api/Renderable.java
@@ -2,8 +2,11 @@ package me.shedaniel.rei.api;
 
 import me.shedaniel.rei.gui.renderables.EmptyRenderer;
 import me.shedaniel.rei.gui.renderables.ItemStackRenderer;
+import me.shedaniel.rei.gui.renderables.SimpleRecipeRenderer;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.math.MathHelper;
 
+import java.util.List;
 import java.util.function.Supplier;
 
 public interface Renderable {
@@ -30,5 +33,20 @@ public interface Renderable {
         return EmptyRenderer.INSTANCE;
     }
     
+    static SimpleRecipeRenderer fromRecipe(Supplier<List<List<ItemStack>>> input, Supplier<List<ItemStack>> output) {
+        return new SimpleRecipeRenderer(input, output);
+    }
+    
+    static ItemStackRenderer fromItemStacks(List<ItemStack> stacks) {
+        return new ItemStackRenderer() {
+            @Override
+            public ItemStack getItemStack() {
+                if (stacks.isEmpty())
+                    return ItemStack.EMPTY;
+                return stacks.get(MathHelper.floor((System.currentTimeMillis() / 500 % (double) stacks.size()) / 1f));
+            }
+        };
+    }
+    
     void render(int x, int y, double mouseX, double mouseY, float delta);
 }