index.html

@@ -26,31 +26,27 @@ import { Region } from "./region.js";
 let surfaceTest = () =>
 {
     let voxels = [];
-    voxels[Region.I(0, 0, 0)] = true;
-    voxels[Region.I(1, 0, 0)] = true;
+    voxels[Region.I(2, 2, 2)] = true;
+    voxels[Region.I(2, 3, 2)] = true;
     let surface = Region.Surface(voxels)
     console.log(surface);
 
     let surfaceGeometry = new THREE.BufferGeometry();
-    surfaceGeometry.setAttribute('position', new THREE.BufferAttribute(new Float32Array(surface.vertices.flat()), 3) );
+    surfaceGeometry.setAttribute('position', new THREE.BufferAttribute(surface.vert, 3) );
     surfaceGeometry.setIndex(surface.triPointVert);
-    surfaceGeometry.computeVertexNormals(true);
+    surfaceGeometry.computeVertexNormals();
 
     let surfaceObject = new THREE.Mesh(
         surfaceGeometry,
-        new THREE.MeshPhongMaterial({color:0xaa9900, side:THREE.DoubleSide, shading:THREE.FlatShading})
+        new THREE.MeshBasicMaterial({color:0xaa9900, wireframe:true})
     );
 
     return {
         DOM:"canvas",
         Init(inScene)
-        {   
-            let light = new THREE.PointLight(0xffffff, 1, 100)
-            light.position.set(0, 2, -4);
-            inScene.add(light)
+        {
             inScene.add(surfaceObject);
             inScene.add(new THREE.GridHelper(10, 10));
-            inScene.add(new THREE.AxesHelper( 5 ));
         },
         Update(inScene, inDelta){}
     };

region.js

@@ -1,5 +1,47 @@
+export const Kernel = 
+{
+    Corners:
+    [
+        [ 1,  1, -1],
+        [ 1, -1, -1],
+        [-1,  1, -1],
+        [-1, -1, -1],
+        [ 1,  1,  1],
+        [ 1, -1,  1],
+        [-1,  1,  1],
+        [-1, -1,  1]
+    ],
+    Cardinal:
+    [
+        [ 1,  0,  0],
+        [ 0,  1,  0],
+        [-1,  0,  0],
+        [ 0, -1,  0],
+        [ 0,  0,  1],
+        [ 0,  0, -1]
+    ],
+    Loop(inList, inVector, inHandler)
+    {
+        for(let i=0; i<inList.length; i++)
+        {
+            let delta = inList[i];
+            if(inHandler(inVector[0]+delta[0], inVector[1]+delta[1], inVector[2]+delta[2]))
+            {
+                return;
+            }
+        }
+    }
+};
 export const Region = 
 {
+    Create()
+    {
+        return {
+            Voxels:[],
+            Filled:[],
+            Surface:[]
+        };
+    },
     I(inX, inY, inZ)
     {
         return inX + inY*16 + inZ*256;
@@ -14,87 +56,55 @@ export const Region =
     },
     Surface(inVoxels)
     {
-        var vertices = []; // array of surface vertices
-        var voxPointVert = []; // vox array, contains integer pointers to vertices
-        var triPointVert = []; // triangle array, contains integer pointers to vertices
-        var vertPointNeighbors = []; // vertex array, contains arrays of integer pointers to vertices
-
-        function Vert(inVoxIndex)
+        function Vert(a)
         {
-            /*
-                If not preexisting, create a vertex with the coordinates of the voxel at `voxPointVert[inVoxIndex]`.
-                Add the new vertex to `vertices`.
-                Initialize empty neighbor connections.
-                Put the *index* of new vertex back in the voxel array at `inVoxIndex`
-                Return the vertex *index*, plus a flag if a vertex was already there.
-
-                Impure refs: voxPointVert, vertPointNeighbors, vertices
-            */
-            var vertPointer = voxPointVert[inVoxIndex]
+            var vertPointer = voxPointVert[a]
             if(vertPointer === undefined)
             {
-                let vert = Region.XYZ(inVoxIndex);
+                let vert = Region.XYZ(a);
                 vertPointer = vertices.length;
-                voxPointVert[inVoxIndex] = vertPointer;
+                voxPointVert[a] = vertPointer;
                 vertPointNeighbors.push([]);
                 vertices.push(vert);
-
-                return [vertPointer, false];
-            }
-            else
-            {
-                return [vertPointer, true];
             }
+            return vertPointer;
         }
-        function Edge(vert1, vert1WasFull, vert2, vert2WasFull)
+        function Face(a, b, c, d)
         {
-            /*
-                Sets up neighbor relationships between vert1 and vert2.
-                Contains a check for if they have already been connected.
-
-                Impure refs: vertPointNeighbors
-            */
-
-            let p1Neighbors = vertPointNeighbors[vert1];
-            let p2Neighbors = vertPointNeighbors[vert2];
-
-            // if the two verts were already filled
-            if((vert1WasFull && vert2WasFull))
-            {
-                // it's possible that they are already connected
-                if(p1Neighbors.indexOf(vert2) !== -1)
-                {
-                    // quit if they are
-                    return;
-                }
-            }
-
-            p1Neighbors.push(vert2);
-            p2Neighbors.push(vert1);
-        }
-        function Face(a, b, c, d /* vox indices */)
-        {
-            let [p1, p1WasFull] = Vert(a);
-            let [p2, p2WasFull] = Vert(b);
-            let [p3, p3WasFull] = Vert(c);
-            let [p4, p4WasFull] = Vert(d);
+            let p1 = Vert(a);
+            let p2 = Vert(b);
+            let p3 = Vert(c);
+            let p4 = Vert(d);
 
             triPointVert.push(p1, p2, p3, p3, p4, p1);
 
-            Edge(p1, p1WasFull, p2, p2WasFull);
-            Edge(p2, p2WasFull, p3, p3WasFull);
-            Edge(p3, p3WasFull, p4, p4WasFull);
-            Edge(p4, p4WasFull, p1, p1WasFull);
+            vertPointNeighbors[p1].push(p2);
+            vertPointNeighbors[p2].push(p1);
+
+            vertPointNeighbors[p2].push(p3);
+            vertPointNeighbors[p3].push(p2);
+
+            vertPointNeighbors[p3].push(p4);
+            vertPointNeighbors[p4].push(p3);
+
+            vertPointNeighbors[p4].push(p1);
+            vertPointNeighbors[p1].push(p2);
         }
 
+        var vertices = [];
+        var voxPointVert = [];
+        var triPointVert = [];
+        var vertPointNeighbors = [];
+
         var i;
-        var x, y, z;
         var BA, BU, BC, BR,  TA, TU, TC, TR,  CL, CD, CB;
         for(i=0; i<inVoxels.length; i++)
         {
             if(inVoxels[i])
             {
-                [x, y, z] = Region.XYZ(i);
+                let [x, y, z] = Region.XYZ(i);
+
+                console.log("at", x, y, z);
 
                 // bottom: at, "up", corner, right
                 BA = i;
@@ -123,6 +133,6 @@ export const Region =
             }
         }
 
-        return {vertices, triPointVert, vertPointNeighbors};
+        return {vert:new Float32Array(vertices.flat()), voxPointVert, triPointVert, vertPointNeighbors};
     }
 };

scene.js

@@ -45,7 +45,7 @@ export function Scene(inSettings)
     scene.add(light);
     //scene.add(new T.GridHelper(10, 10));
     light.position.set(-1, 2, 4);
-    camera.position.set(-1, 2, -1);
+    camera.position.set(0, 5, 5);
     camera.lookAt(new T.Vector3(0,0,0));
     controls.update();