improve efficiency of wire mesh generation. free point cache after slice

app.js

@@ -231,7 +231,7 @@ const script = {
         "add/array",
         "add/three",
         "geo/base",
-        "geo/render",
+        // "geo/render",
         "geo/point",
         "geo/points",
         "geo/slope",
@@ -364,7 +364,7 @@ const script = {
         "add/array",
         "add/three",
         "geo/base",
-        "geo/render",
+        // "geo/render",
         "geo/point",
         "geo/points",
         "geo/slope",
@@ -395,7 +395,7 @@ const script = {
         "add/array",
         "add/three",
         "geo/base",
-        "geo/render",
+        // "geo/render",
         "geo/point",
         "geo/slope",
         "geo/line",

src/add/three.js

@@ -106,17 +106,6 @@
         return this;
     };
 
-    // may be faster than the equivalent matrix transform. to be tested
-//     BP.translate = function(x,y,z) {
-//         let off = [x,y,z],
-//             arr = this.attributes.position.array,
-//             len = arr.length;
-//         for (let i=0; i<len; i++) {
-//             arr[i] += off[i%3];
-//         }
-//         return this;
-//     }
-
     THREE.Object3D.prototype.newGroup = function() {
         var group = new THREE.Group();
         this.add(group);

src/kiri/widget.js

@@ -796,6 +796,9 @@ console.log/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
                 ondone('invalid mode: '+settings.mode);
             }
         }
+
+        // discard point cache
+        widget.points = undefined;
     };
 
     /**
@@ -815,12 +818,15 @@ console.log/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
         let mesh = this.mesh,
             widget = this;
         if (this.wire) {
+            this.setOpacity(solid_opacity);
             mesh.remove(this.wire);
             this.wire = null;
-            this.setOpacity(solid_opacity);
         }
         if (set) {
-            widget.wire = base.render.wireframe(mesh, this.getPoints(), color);
+            let geo = new THREE.WireframeGeometry(mesh.geometry);
+            let mat = new THREE.LineBasicMaterial({ color: 0 });
+            let wire = widget.wire = new THREE.LineSegments(geo, mat);
+            mesh.add(wire);
         }
         if (opacity !== undefined) {
             widget.setOpacity(opacity);

src/moto/space.js

@@ -1064,7 +1064,8 @@
 
             renderer = new THREE.WebGLRenderer({
                 antialias: true,
-                preserveDrawingBuffer: true
+                preserveDrawingBuffer: true,
+                logarithmicDepthBuffer: true
             });
             camera = ortho ?
                 new THREE.OrthographicCamera(-100 * aspect(), 100 * aspect(), 100, -100, 0.1, 100000) :