log split

src/main/mesh.js

@@ -175,8 +175,13 @@ let split = {
     },
 
     select() {
+        let { log } = mesh.api;
         let { models, plane } = split.state;
-        Promise.all(models.map(m => m.split(plane))).then(split.end);
+        log.emit(`splitting ${models.length} model(s) at ${plane.z.round(3)}`).pin();
+        Promise.all(models.map(m => m.split(plane))).then(() => {
+            log.emit('split complete').unpin();
+            split.end();
+        });
     },
 
     end() {

src/mesh/model.js

@@ -348,7 +348,7 @@ mesh.model = class MeshModel extends mesh.object {
                 // new model becomes top
                 if (o2.length)
                 this.group.add(new mesh.model({
-                    file: `${this.file}-split`,
+                    file: `${this.file}`,
                     mesh: o2
                 }).applyMatrix4(m4)).select();
                 // this becomes bottom

src/mesh/work.js

@@ -83,6 +83,8 @@ let model = {
         return data;
     },
 
+    // split a model along an axis at a given point
+    // return two arrays of vertices for each resulting object
     split(data) {
         let { id, matrix, z } = data;
         let o1 = [];