Add checkbox for new setting 'printer.bottomEnableTraveling'.

Implement bottom layer traveling in GCode generation as well as sketch rendering.

js/Shape.js

@@ -25,7 +25,7 @@ function shapeMoveTo(x,y) {
   _points.push([x, y, true]);
   adjustBounds(x, y);
   adjustPreviewTransformation();
-  draw(x, y, .5);
+  draw(x, y, -1);
 }
 
 function shapeLineTo(x,y) {

js/Svg.js

@@ -116,7 +116,7 @@ function loadFromSvg(svgData) {
 				adjustBounds(x, y);
 				adjustPreviewTransformation();
 
-				if (isMove) draw(x, y, .5);
+				if (isMove) draw(x, y, -1);
 				else draw(x, y);
 			}
 			p++;

js/canvasDrawing.js

@@ -97,17 +97,30 @@ function initDoodleDrawing() {
  *  CANVAS DRAWING FUNCTION
  *
  * * * * * * * * * */
+
+//If _width is not specified, it is calculated from the distance between this and the previous point.
+//If _width is negative, the path is 'floating', and only drawn if the setting printer.bottomEnableTraveling is true.
 function draw(_x, _y, _width) {
   //console.log("canvasDrawing:draw");
-  //    console.log("f:draw() >> _width: " + _width);
+  //console.log("f:draw() >> _width: " + _width);
 
-  if (prevX == 0 && prevY ==0) {
+  if (prevX == 0 && prevY == 0) {
     prevX = _x;
     prevY = _y;
   }
 
   ctx.beginPath();
   ctx.moveTo(prevX, prevY);
+  
+  if (_width != undefined && _width < 0) {
+    if (settings['printer.bottomEnableTraveling']) {
+      ctx.moveTo(_x, _y);
+    } else {
+      ctx.lineTo(_x, _y);
+      ctx.lineWidth = 0.5;
+      ctx.stroke();
+    }
+  } else {
     ctx.lineTo(_x, _y);
 
     if (_width != undefined) {
@@ -142,7 +155,9 @@ function draw(_x, _y, _width) {
       ctx.lineWidth = lineweight;
     }
     ctx.lineCap = 'round';
+
     ctx.stroke();
+  }
 
   prevX = _x;
   prevY = _y;
@@ -202,7 +217,7 @@ function redrawDoodle(recalcBoundsAndTransforms) {
   for (var i = 0; i < _points.length; i++) {
     //      console.log("     drawing points " + _points[i]);
     if (_points[i][2] == true) {
-      draw(_points[i][0], _points[i][1], 0.5);
+      draw(_points[i][0], _points[i][1], -1);
     } else {
       draw(_points[i][0], _points[i][1]);
     }
@@ -301,7 +316,7 @@ function onCanvasMouseDown(e) {
   _points.push([x, y, true]);
   adjustBounds(x, y);
   adjustPreviewTransformation();
-  draw(x, y, 0.5);
+  draw(x, y, -1);
 }
 
 var prevPoint = {x:-1, y:-1};
@@ -401,7 +416,7 @@ function onCanvasTouchDown(e) {
   _points.push([x, y, true]);
   adjustBounds(x, y);
   adjustPreviewTransformation();
-  draw(x, y, .5);
+  draw(x, y, -1);
 
   movementCounter = 0;
 
@@ -489,8 +504,3 @@ function onCanvasTouchEnd(e) {
 function prevent(e) {
   e.preventDefault();
 }
-
-
-
-
-

js/gcodeGenerating.js

@@ -20,6 +20,7 @@ function generate_gcode() {
   var bottomSpeed 			      = settings["printer.bottomLayerSpeed"];
   var firstLayerSlow			  = settings["printer.firstLayerSlow"];
   var bottomFlowRate			  = settings["printer.bottomFlowRate"];
+  var bottomEnableTraveling		  = settings["printer.bottomEnableTraveling"];
   var travelSpeed 			      = settings["printer.travelSpeed"]
   var filamentThickness       = settings["printer.filamentThickness"];
   var wallThickness 		      = settings["printer.wallThickness"];
@@ -159,8 +160,10 @@ function generate_gcode() {
         var isTraveling = !isLoop && i==0;
         var doRetract = retractionEnabled && prev.distance(to) > retractionminDistance;
 
+        //Always travel to first point, then optionally disable traveling for first two layers and use settings for remainder of print.
         var firstPointEver = (layer == 0 && i == 0 && j == 0);
-        if (firstPointEver || layer > 2 && enableTraveling && isTraveling) { //always travel to first point, then disable traveling for first two layers and use settings for remainder of print
+        var travelingAllowed = firstPointEver || bottomEnableTraveling || layer > 2;
+        if (travelingAllowed && enableTraveling && isTraveling) {
           if (!firstPointEver && doRetract) gcode.push("G0 E" + (extruder - retractionamount).toFixed(3) + " F" + (retractionspeed * 60).toFixed(3)); //retract
           gcode.push("G0 X" + to.x.toFixed(3) + " Y" + to.y.toFixed(3) + " Z" + z.toFixed(3) + " F" + (travelSpeed * 60).toFixed(3));
           if (!firstPointEver && doRetract) gcode.push("G0 E" + extruder.toFixed(3) + " F" + (retractionspeed * 60).toFixed(3)); // return to normal

js/settings/SettingsWindow.js

@@ -116,6 +116,10 @@ function SettingsWindow() {
 				settingsPopup.close();
 				self.signin();
 			}
+			
+			//FIXME: instead of this rather ugly call, implement events for changes to settings so we can keep code decoupled
+			redrawDoodle(false);
+      
 			_btnOK.removeAttr("disabled");
 		});
 	};

www/settings.html

@@ -99,6 +99,7 @@
       <label for="bottomLayerSpeed">Bottom layer speed:</label><input id="bottomLayerSpeed" type="number" name="printer.bottomLayerSpeed" class="small">mm/s<br>
       <label for="travelSpeed">Travel speed:</label><input id="travelSpeed" type="number" name="printer.travelSpeed" class="small">mm/s<br>
       <label for="enableTraveling">Enable traveling:</label><input id="enableTraveling" type="checkbox" name="printer.enableTraveling" value="enableTraveling"><br>
+      <label for="bottomEnableTraveling">Bottom layers traveling:</label><input id="bottomEnableTraveling" type="checkbox" name="printer.bottomEnableTraveling" value="bottomEnableTraveling"><br>
       <label for="firstLayerSlow">Bottom layers slow:</label><input id="firstLayerSlow" type="checkbox" name="printer.firstLayerSlow" value="firstLayerSlow"><br>
       <label for="bottomFlowRate">Bottom layers flow rate*:</label><input id="bottomFlowRate" type="number" name="printer.bottomFlowRate" class="small"><br>
       <small>* Multiplier for extrusion rate in first few layers</small>