resurrect wipe as a post-retraction option

src/kiri/conf.js

@@ -330,13 +330,13 @@
                     outputFanLayer: 1,
                     outputRetractDist: 1.5,
                     outputRetractSpeed: 40,
+                    outputRetractWipe: 0,
                     outputRetractDwell: 20,
                     outputBrimCount: 2,
                     outputBrimOffset: 2,
                     outputShortPoly: 100.0,
                     outputMinSpeed: 10.0,
                     outputCoastDist: 0,
-                    outputWipeDistance: 0,
                     outputLayerRetract: false,
                     outputOriginCenter: true,
                     outputLoopLayers: "",

src/kiri/init.js

@@ -1786,9 +1786,9 @@
             advanced:            UC.newGroup(LANG.ad_menu, null, {modes:FDM}),
             outputRetractDist:   UC.newInput(LANG.ad_rdst_s, {title:LANG.ad_rdst_l, convert:UC.toFloat, modes:FDM}),
             outputRetractSpeed:  UC.newInput(LANG.ad_rrat_s, {title:LANG.ad_rrat_l, convert:UC.toInt, modes:FDM}),
+            outputRetractWipe:   UC.newInput(LANG.ad_wpln_s, {title:LANG.ad_wpln_l, bound:UC.bound(0.0,10), convert:UC.toFloat, modes:FDM}),
             outputRetractDwell:  UC.newInput(LANG.ad_rdwl_s, {title:LANG.ad_rdwl_l, convert:UC.toInt, modes:FDM}),
             fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
-            // outputWipeDistance: UC.newInput("wipe", {title:"non-printing move at\close of polygon\nin millimeters", bound:UC.bound(0.0,10), convert:UC.toFloat, modes:FDM}),
             sliceSolidMinArea:   UC.newInput(LANG.ad_msol_s, {title:LANG.ad_msol_l, convert:UC.toFloat, modes:FDM}),
             outputMinSpeed:      UC.newInput(LANG.ad_mins_s, {title:LANG.ad_mins_l, bound:UC.bound(5,200), convert:UC.toFloat, modes:FDM}),
             outputShortPoly:     UC.newInput(LANG.ad_spol_s, {title:LANG.ad_spol_l, bound:UC.bound(0,10000), convert:UC.toFloat, modes:FDM}),

src/kiri/print.js

@@ -449,7 +449,6 @@
             first = true,
             close = !options.open,
             last = startPoint,
-            wipeDist = options.wipe || 0,
             coastDist = options.coast || 0,
             tool = options.tool;
 
@@ -525,10 +524,12 @@
             origin = startPoint.add(offset),
             zhop = process.zHopDistance || 0,
             antiBacklash = process.antiBacklash,
+            wipeDist = process.outputRetractWipe || 0,
             doSupport = opt.support,
             isBelt = device.bedBelt,
             startClone = startPoint.clone(),
-            z = slice.z;
+            z = slice.z,
+            lastPoly;
 
         // apply first layer extrusion multipliers
         if (firstLayer) {
@@ -538,12 +539,15 @@
         }
 
         function retract() {
-            if (preout.length) {
-                preout.last().retract = true;
-            } else if (output.length) {
-                output.last().retract = true;
+            let array = preout.length ? preout : output;
+            if (array.length) {
+                let last = array.last();
+                last.retract = true;
+                if (wipeDist && lastPoly && last.point) {
+                    addOutput(array, last.point.followTo(lastPoly.center(true), wipeDist));
+                }
             } else if (opt.pretract) {
-                opt.pretract();
+                opt.pretract(wipeDist);
             } else {
                 console.log('unable to retract. no preout or output');
             }
@@ -583,6 +587,7 @@
                         }
                     }
                 });
+                lastPoly = output.lastPoly = poly;
             }
         }
 

src/mode/fdm/export.js

@@ -207,7 +207,6 @@
                 // console.log({double_retract: zhop});
                 return;
             }
-            // console.log({retract:zhop});
             retracted = retDist;
             moveTo({e:-retracted}, retSpeed, `e-retract ${retDist}`);
             if (zhop) moveTo({z:zpos + zhop}, seekMMM, "z-hop start");

src/mode/fdm/prepare.js

@@ -403,9 +403,13 @@
                         first: slice.index === 0,
                         support: slice.widget.support,
                         onBelt: slice.onbelt,
-                        pretract: () => {
+                        pretract: (wipeDist) => {
                             if (lastLayer && lastLayer.length) {
-                                lastLayer.last().retract = true;
+                                let lastOut = lastLayer.last();
+                                lastOut.retract = true;
+                                if (wipeDist && lastLayer.lastPoly && lastOut.point) {
+                                    print.addOutput(lastLayer, lastOut.point.followTo(lastLayer.lastPoly.center(true), wipeDist));
+                                }
                             }
                         }
                     }

web/kiri/lang/en.js

@@ -480,6 +480,8 @@ kiri.lang['en-us'] = {
     ad_rrat_s:      "retract rate",
     ad_rrat_l:      "speed of filament\nretraction in mm/s",
     ad_rdwl_s:      "engage dwell",
+    ad_wpln_s:      "retract wipe",
+    ad_wpln_l:      "non-printing move\nafter retraction\nin millimeters",
     ad_rdwl_l:      "time between re-engaging\nfilament and movement\nin milliseconds",
     ad_scst_s:      "shell coast",
     ad_scst_l:      "non-printing end\nof perimeter shells\nin millimeters",