clean up obj export floats

src/mesh/object.js

@@ -97,7 +97,6 @@ mesh.object = class MeshObject {
         scale.set(...arguments);
         this.matrixChanged();
         let [ x, y, z ] = arguments;
-        moto.client.fn.object_scale({id: this.id, x, y, z});
     }
 
     rotate(x = 0, y = 0, z = 0) {

src/mesh/work.js

@@ -103,10 +103,10 @@ let file = {
         switch (format) {
             case "obj":
                 let p = 1;
-                let obj = [];
+                let obj = [`# Generated By Kiri:Moto (units = millimeters)`];
                 for (let rec of recs) {
                     let { id, matrix, file } = rec;
-                    let verts = translate_encode(id, matrix);
+                    let verts = Array.from(translate_encode(id, matrix)).map(v => v.round(5));
                     obj.push(`g ${file}`);
                     for (let i=0; i<verts.length; p += 3) {
                         obj.push(`v ${verts[i++]} ${verts[i++]} ${verts[i++]}`);