From c101c2f2f887352316b07ffd057bd4cc0305710e Mon Sep 17 00:00:00 2001
From: Seth Trowbridge <seth111@gmail.com>
Date: Sun, 10 Apr 2022 18:22:48 -0400
Subject: [PATCH] rebuild everything works

---
 app.js | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/app.js b/app.js
index 828a556..526726c 100644
--- a/app.js
+++ b/app.js
@@ -7,26 +7,34 @@ import Region from "./region.js";
 
 let voxels = [];
 voxels[Region.I(0, 0, 0)] = true;
+voxels[Region.I(1, 0, 0)] = true;
+voxels[Region.I(1, 1, 0)] = true;
+voxels[Region.I(1, 2, 0)] = true;
 
 
 let surfaceCubeGeometry = new T.BufferGeometry();
+surfaceCubeGeometry.setAttribute("position", new T.BufferAttribute(new Float32Array(), 3));
 let surfaceCubeObject = new T.Mesh(
     surfaceCubeGeometry,
-    new T.MeshPhongMaterial({color:0x666666, wireframe:false, flatShading:true, side:T.DoubleSide})
+    new T.MeshPhongMaterial({color:0x666666, wireframe:false, flatShading:false, side:T.BackSide})
 );
 
-
 let surfaceCubeNormalHelper;
 
 let rebuildSurface = inVoxels =>
 {
     let { pos, ind } = Region.Surface(inVoxels);
 
-    surfaceCubeGeometry.setAttribute("position", new T.BufferAttribute(pos, 3));
-    surfaceCubeGeometry.setIndex(ind);
+    let surfaceCubePositions = new T.BufferAttribute(pos, 3);
+    surfaceCubePositions.setUsage( T.DynamicDrawUsage );
 
+    surfaceCubeGeometry.dispose();
+    surfaceCubeGeometry = new T.BufferGeometry();
+    surfaceCubeGeometry.setAttribute("position", surfaceCubePositions);
+    surfaceCubeGeometry.setIndex(ind);
     surfaceCubeGeometry.computeVertexNormals();
-    if(surfaceCubeNormalHelper) surfaceCubeNormalHelper.update();
+    surfaceCubeObject.geometry = surfaceCubeGeometry;
+
 };
 rebuildSurface(voxels);
 
@@ -50,7 +58,7 @@ Scene({
 
         inScene.add(surfaceCubeObject);
 
-        inScene.add(new T.GridHelper(10, 10));
+        //inScene.add(new T.GridHelper(10, 10));
         inScene.add(new T.AxesHelper( 5 ));
 
         inScene.add( hitHelper );
@@ -76,6 +84,9 @@ Scene({
                 index = Region.I(Math.floor(hit.point.x), Math.floor(hit.point.y), Math.floor(hit.point.z));
                 voxels[index] = true;
                 rebuildSurface(voxels);
+                inScene.remove(surfaceCubeNormalHelper);
+                surfaceCubeNormalHelper = new VertexNormalsHelper( surfaceCubeObject, -0.2 );
+                inScene.add(surfaceCubeNormalHelper);
                 hitHelper.position.set(hit.point.x, hit.point.y, hit.point.z);
                 console.log(index, hit);
             }