add widget hiding option in cam preview. change move color for better contrast

src/kiri/init.js

@@ -1578,7 +1578,8 @@
             layerDelta:    UC.newBoolean(LANG.la_dlta, onLayerToggle, {modes:FDM}),
             layerSolid:    UC.newBoolean(LANG.la_slds, onLayerToggle, {modes:FDM}),
             layerPrint:    UC.newBoolean(LANG.la_prnt, onLayerToggle, {modes:GCODE}),
-            layerMoves:    UC.newBoolean(LANG.la_move, onLayerToggle, {modes:GCODE})
+            layerMoves:    UC.newBoolean(LANG.la_move, onLayerToggle, {modes:GCODE}),
+            layerParts:    UC.newBoolean(LANG.la_part, onLayerToggle, {modes:CAM})
         });
 
         function showLaserKnife() {

src/kiri/main.js

@@ -593,6 +593,19 @@
         return showing;
     }
 
+    function setWidgetVisibility(bool) {
+        if (bool) {
+            UI.layerParts.checked = true;
+        }
+        forAllWidgets(w => {
+            if (bool) {
+                w.show();
+            } else {
+                w.hide();
+            }
+        });
+    }
+
     /**
      * hide or show slice-layers and their sub-elements
      *
@@ -603,6 +616,10 @@
             return;
         }
 
+        if (MODE === MODES.CAM) {
+            setWidgetVisibility(UI.layerParts.checked);
+        }
+
         showSlider();
 
         if (typeof(layer) === 'string' || typeof(layer) === 'number') {
@@ -1997,13 +2014,16 @@
                 hideSlider();
                 clearWidgetCache();
                 updateSliderMax();
+                setWidgetVisibility(true);
                 break;
             case VIEWS.SLICE:
                 $('lt-back').style.display = 'flex';
                 updateSliderMax();
+                setWidgetVisibility(true);
                 break;
             case VIEWS.PREVIEW:
-            $('lt-back').style.display = 'flex';
+                $('lt-back').style.display = 'flex';
+                setWidgetVisibility(true);
                 break;
             default:
                 DBUG.log("invalid view mode: "+mode);

src/kiri/widget.js

@@ -758,4 +758,12 @@
         }
     };
 
+    PRO.show = function() {
+        this.mesh.visible = true;
+    };
+
+    PRO.hide = function() {
+        this.mesh.visible = false;
+    };
+
 })();

src/mode/cam/driver.js

@@ -2101,7 +2101,7 @@
     };
 
     function printRender(print) {
-        return KIRI.driver.FDM.printRender(print, {aslines: true, color: 0x010101});
+        return KIRI.driver.FDM.printRender(print, {aslines: true, color: 0x010101, move_color: 0xcc3333});
     }
 
 })();

src/mode/fdm/driver.js

@@ -1352,7 +1352,7 @@
             emits = KIRI.newLayer(scope.group);
             if (showmoves) {
                 moves = KIRI.newLayer(scope.group);
-                moves.lines(move, 0x888888);
+                moves.lines(move, opt.move_color || 0x888888);
             }
             emits.setTransparent(false);
             // emit printing shapes