Fix brim

brim now always prints the most outer layer first

src/sliceActions/addBrim.js

@@ -27,10 +27,9 @@ export default function addBrim(slices, settings) {
     }))
   ), new Shape([], true)).simplify('pftNonZero');
 
-  firstLayer.brim = new Shape([], true);
-
+  firstLayer.brim = [];
   for (let offset = 0; offset < brimSize; offset += nozzleDiameter) {
     const brimPart = brim.offset(offset, offsetOptions);
-    firstLayer.brim = firstLayer.brim.join(brimPart);
+    firstLayer.brim.unshift(brimPart);
   }
 }

src/sliceActions/optimizePaths.js

@@ -7,9 +7,13 @@ export default function optimizePaths(slices, settings) {
   for (let layer = 0; layer < slices.length; layer ++) {
     const slice = slices[layer];
 
-    if (typeof slice.brim !== 'undefined' && slice.brim.paths.length > 0) {
-      slice.brim = optimizeShape(slice.brim, start);
-      start.copy(slice.brim.lastPoint(true));
+    if (typeof slice.brim !== 'undefined') {
+      for (let i = 0; i < slice.brim.length; i ++) {
+        if (slice.brim[i].paths.length > 0) {
+          slice.brim[i] = optimizeShape(slice.brim[i], start);
+          start.copy(slice.brim[i].lastPoint(true));
+        }
+      }
     }
 
     const parts = [];

src/sliceActions/removePrecision.js

@@ -25,7 +25,9 @@ export default function removePrecision(slices) {
       slice.support.scaleDown(inversePrecision);
     }
     if (typeof slice.brim !== 'undefined') {
-      slice.brim.scaleDown(inversePrecision);
+      for (let i = 0; i < slice.brim.length; i ++) {
+        slice.brim[i].scaleDown(inversePrecision);
+      }
     }
   }
 }

src/sliceActions/slicesToGCode.js

@@ -48,7 +48,9 @@ export default function slicesToGCode(slices, settings) {
     }, {});
 
     if (typeof slice.brim !== 'undefined') {
-      pathToGCode(null, false, gcode, slice.brim, true, true, z, profiles.brim);
+      for (let i = 0; i < slice.brim.length; i ++) {
+        pathToGCode(null, false, gcode, slice.brim[i], false, false, z, profiles.brim);
+      }
     }
 
     for (let i = 0; i < slice.parts.length; i ++) {