From 9fb4798c774e14a359fcb603167dcb28aa4d24cf Mon Sep 17 00:00:00 2001
From: Daniel Mills <danielmillst@gmail.com>
Date: Mon, 2 Aug 2021 15:59:27 -0400
Subject: [PATCH] Streamed expressions

---
 .../com/volmit/iris/engine/object/IrisExpression.java    | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/com/volmit/iris/engine/object/IrisExpression.java b/src/main/java/com/volmit/iris/engine/object/IrisExpression.java
index 1a3d06453..9660a9279 100644
--- a/src/main/java/com/volmit/iris/engine/object/IrisExpression.java
+++ b/src/main/java/com/volmit/iris/engine/object/IrisExpression.java
@@ -26,6 +26,8 @@ import com.volmit.iris.engine.cache.AtomicCache;
 import com.volmit.iris.engine.object.annotations.ArrayType;
 import com.volmit.iris.engine.object.annotations.Desc;
 import com.volmit.iris.engine.object.annotations.Required;
+import com.volmit.iris.engine.stream.ProceduralStream;
+import com.volmit.iris.engine.stream.interpolation.Interpolated;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.math.RNG;
 import lombok.AllArgsConstructor;
@@ -53,6 +55,7 @@ public class IrisExpression extends IrisRegistrant {
     private String expression;
 
     private transient AtomicCache<Expression> expressionCache = new AtomicCache<>();
+    private transient AtomicCache<ProceduralStream<Double>> streamCache = new AtomicCache<>();
 
     private Expression expression() {
         return expressionCache.aquire(() -> {
@@ -82,6 +85,12 @@ public class IrisExpression extends IrisRegistrant {
         });
     }
 
+    public ProceduralStream<Double> stream(RNG rng)
+    {
+        return streamCache.aquire(() -> ProceduralStream.of((x, z) -> evaluate(rng, x, z),
+                (x, y, z) -> evaluate(rng, x, y, z), Interpolated.DOUBLE));
+    }
+
     public double evaluate(RNG rng, double x, double z) {
         double[] g = new double[3 + getVariables().size()];
         int m = 0;