more intelligent sync. but clear/sync in belt mode. eliminate layer support gap in belt mode

notes.md

@@ -2,7 +2,6 @@
 
 ## `C` cosmetic, `F` functional, `P` performance, `B` bug fix
 
-* `B` client/worker cache invalidated by latest rotation work. revisit sync.
 * `B` normals possibly inverted on faces in 2D to 3D conversion
 * `B` origin bug (Onshape?) when switching modes in 2.5 and 2.6
 

src/kiri/client.js

@@ -121,6 +121,9 @@ KIRI.work = {
 
     // widget sync
     sync: function() {
+        // send list of currently valid widgets
+        send("sync", { valid: KIRI.api.widgets.all().map(w => w.id) }, () =>  {});
+        // sync any widget that has changed
         let widgets = KIRI.api.widgets.all();
         widgets.forEach(widget => {
             if (widget.modified || !syncd[widget.id]) {

src/kiri/init.js

@@ -1685,7 +1685,7 @@
             fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
             sliceSupportSize:    UC.newInput(LANG.sp_size_s, {title:LANG.sp_size_l, bound:UC.bound(1.0,200.0), convert:UC.toFloat, modes:FDM}),
             sliceSupportOffset:  UC.newInput(LANG.sp_offs_s, {title:LANG.sp_offs_l, bound:UC.bound(0.0,200.0), convert:UC.toFloat, modes:FDM}),
-            sliceSupportGap:     UC.newInput(LANG.sp_gaps_s, {title:LANG.sp_gaps_l, bound:UC.bound(0,5), convert:UC.toInt, modes:FDM}),
+            sliceSupportGap:     UC.newInput(LANG.sp_gaps_s, {title:LANG.sp_gaps_l, bound:UC.bound(0,5), convert:UC.toInt, modes:FDM, show:isNotBelt}),
             fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
             sliceSupportArea:    UC.newInput(LANG.sp_area_s, {title:LANG.sp_area_l, bound:UC.bound(0.0,200.0), convert:UC.toFloat, modes:FDM}),
             sliceSupportExtra:   UC.newInput(LANG.sp_xpnd_s, {title:LANG.sp_xpnd_l, bound:UC.bound(0.0,200.0), convert:UC.toFloat, modes:FDM}),

src/kiri/main.js

@@ -871,7 +871,7 @@
         setOpacity(color.slicing_opacity);
 
         STACKS.clear();
-        if (mode === 'FDM') {
+        if (settings.device.bedBelt) {
             KIRI.client.clear();
         }
         KIRI.client.sync();

src/kiri/worker.js

@@ -51,6 +51,20 @@ KIRI.worker = {
 
     // widget sync
     sync: function(data, send) {
+        if (data.valid) {
+            // remove widgets not present in valid list
+            for (let key in wcache) {
+                if (data.valid.indexOf(key) < 0) {
+                    delete wcache[key];
+                    for (let [id,group] of Object.entries(wgroup)) {
+                        wgroup[id] = group = group.filter(v => v.id !== key);
+                        group.id = id;
+                    }
+                }
+            }
+            return;
+        }
+
         let group = wgroup[data.group];
         if (!group) {
             group = [];

src/mode/fdm/slice.js

@@ -191,7 +191,7 @@
                             slice.addTop(u);
                         }
                     }
-                    let gap = sliceHeight * spro.sliceSupportGap
+                    let gap = sliceHeight * (isBelt ? 0 : spro.sliceSupportGap);
                     // clip tops to other widgets in group
                     tops = slice.topPolys();
                     for (let peer of widget.group) {