add sliceSupportGrow to help merge close supports

src/kiri-mode/fdm/slice.js

@@ -778,7 +778,11 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
             forSlices(0.5, promises ? 0.6 : 0.7, slice => {
                 let params = slice.params || process;
                 let density = params.sliceSupportDensity;
-                let supports = slice.supports = slice.topShells();
+                let supports = slice.topShells();
+                if (params.sliceSupportGrow > 0) {
+                    supports  = POLY.expand(supports, params.sliceSupportGrow, slice.z, []);
+                }
+                slice.supports = supports;
                 slice.tops = undefined; // remove outline leave only supports
                 let polys = [];
                 if (density) {

src/kiri/conf.js

@@ -318,6 +318,7 @@ const conf = exports({
                 sliceSupportSize: 5,
                 sliceSupportArea: 0.1,
                 sliceSupportSpan: 5,
+                sliceSupportGrow: 0,
                 sliceSupportExtra: 0,
                 sliceSupportAngle: 50,
                 sliceSupportNozzle: 0,

src/kiri/init.js

@@ -1870,7 +1870,8 @@ gapp.register("kiri.init", [], (root, exports) => {
             sliceSupportGap:     uc.newInput(LANG.sp_gaps_s, {title:LANG.sp_gaps_l, bound:uc.bound(0,5), convert:uc.toInt, modes:FDM}),
             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}),
+            sliceSupportExtra:   uc.newInput(LANG.sp_xpnd_s, {title:LANG.sp_xpnd_l, bound:uc.bound(0.0,10.0), convert:uc.toFloat, modes:FDM}),
+            sliceSupportGrow:    uc.newInput(LANG.sp_grow_s, {title:LANG.sp_grow_l, bound:uc.bound(0.0,10.0), convert:uc.toFloat, modes:FDM}),
             fdmSep:              uc.newBlank({class:"pop-sep", modes:FDM}),
             sliceSupportAngle:   uc.newInput(LANG.sp_angl_s, {title:LANG.sp_angl_l, bound:uc.bound(0.0,90.0), convert:uc.toFloat, modes:FDM}),
             sliceSupportSpan:    uc.newInput(LANG.sp_span_s, {title:LANG.sp_span_l, bound:uc.bound(0.0,200.0), convert:uc.toFloat, modes:FDM, show:() => ui.sliceSupportEnable.checked}),

web/kiri/lang/en.js

@@ -417,6 +417,8 @@ self.kiri.lang['en-us'] = {
     sp_area_l:      ["minimum area for","a support column","in millimeters","smaller values will","slow detection"],
     sp_xpnd_s:      "expand",
     sp_xpnd_l:      ["expand support area","beyond part boundary","in millimeters"],
+    sp_grow_s:      "grow",
+    sp_grow_l:      ["grow support column to fill small gaps","in millimeters"],
     sp_nozl_s:      "extruder",
     sp_nozl_l:      ["in multi-extruder systems","the extruder to use for","support material"],
     sp_outl_s:      "outline",