added new "footprints" symbol

symbols.js

@@ -41,7 +41,7 @@
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.symbols = '2017-September-19';
+modules.symbols = '2017-September-25';
 
 var SymbolMorph;
 
@@ -51,8 +51,8 @@ WorldMorph.prototype.customMorphs = function () {
 
     return [
         new SymbolMorph(
-            'location',
-            50,
+            'footprints',
+            18,
             new Color(250, 250, 250),
             new Point(-1, -1),
             new Color(20, 20, 20)
@@ -132,7 +132,8 @@ SymbolMorph.prototype.names = [
     'magnifierOutline',
     'notes',
     'camera',
-    'location'
+    'location',
+    'footprints'
 ];
 
 // SymbolMorph instance creation:
@@ -312,6 +313,8 @@ SymbolMorph.prototype.symbolCanvasColored = function (aColor) {
         return this.drawSymbolCamera(canvas, aColor);
     case 'location':
         return this.drawSymbolLocation(canvas, aColor);
+    case 'footprints':
+        return this.drawSymbolFootprints(canvas, aColor);
     default:
         return canvas;
     }
@@ -1590,7 +1593,7 @@ SymbolMorph.prototype.drawSymbolCamera = function (canvas, color) {
 };
 
 SymbolMorph.prototype.drawSymbolLocation = function (canvas, color) {
-    // answer a canvas showing a camera
+    // answer a canvas showing a map pin
     var ctx = canvas.getContext('2d'),
         w = canvas.width,
         h = canvas.height,
@@ -1613,3 +1616,42 @@ SymbolMorph.prototype.drawSymbolLocation = function (canvas, color) {
 
     return canvas;
 };
+
+SymbolMorph.prototype.drawSymbolFootprints = function (canvas, color) {
+    // answer a canvas showing a pair of (shoe) footprints
+    var ctx = canvas.getContext('2d'),
+        w = canvas.width,
+        u = w / 10,
+        r = u * 1.5;
+
+    ctx.fillStyle = color.toString();
+
+    // left shoe
+    // tip
+    ctx.beginPath();
+    ctx.arc(r, r, r, radians(-200), radians(0), false);
+    ctx.lineTo(r * 2, u * 5.5);
+    ctx.lineTo(u, u * 6);
+    ctx.closePath();
+    ctx.fill();
+    // heel
+    ctx.beginPath();
+    ctx.arc(u * 2.25, u * 6.75, u , radians(-40), radians(-170), false);
+    ctx.closePath();
+    ctx.fill();
+
+    // right shoe
+    // tip
+    ctx.beginPath();
+    ctx.arc(w - r, u * 4.5, r, radians(-180), radians(20), false);
+    ctx.lineTo(w - u, u * 8.5);
+    ctx.lineTo(w - (r * 2), u * 8);
+    ctx.closePath();
+    ctx.fill();
+    // heel
+    ctx.beginPath();
+    ctx.arc(w - (u * 2.25), u * 9, u, radians(0), radians(-150), false);
+    ctx.closePath();
+    ctx.fill();
+    return canvas;
+};