Make ~/, round, ceil, floor, truncate return ints. Remove toInt.

samples/spirodraw/Spirodraw.dart

Index: samples/spirodraw/Spirodraw.dart
diff --git a/samples/spirodraw/Spirodraw.dart b/samples/spirodraw/Spirodraw.dart
index 98e03c39883d3da76871a40f7028169407300656..809291a26bc4a1453983f0cbfccbf6a3fc332c11 100644
--- a/samples/spirodraw/Spirodraw.dart
+++ b/samples/spirodraw/Spirodraw.dart
@@ -102,7 +102,7 @@ class Spirodraw {
   }
 
   void onPenWidthChange() {
-    penWidth = penWidthSlider.valueAsNumber.toInt();
+    penWidth = penWidthSlider.valueAsNumber.truncate();
     drawFrame(rad);
   }
 
@@ -114,18 +114,18 @@ class Spirodraw {
     // based on starting diameter == min / 2, fixed radius == 10 units
     int min = Math.min(height, width);
     double pixelsPerUnit = min / 40;
-    RUnits = fixedRadiusSlider.valueAsNumber.toInt();
+    RUnits = fixedRadiusSlider.valueAsNumber.truncate();
     R = RUnits * pixelsPerUnit;
     // Scale inner radius and pen distance in units of fixed radius
-    rUnits = wheelRadiusSlider.valueAsNumber.toInt();
+    rUnits = wheelRadiusSlider.valueAsNumber.truncate();
     r = rUnits * R/RUnits * int.parse(inOrOut.value);
-    dUnits = penRadiusSlider.valueAsNumber.toInt();
+    dUnits = penRadiusSlider.valueAsNumber.truncate();
     d = dUnits * R/RUnits;
     numPoints = calcNumPoints();
     maxTurns = calcTurns();
     onSpeedChange();
     numTurns.text = "0 / ${maxTurns}";
-    penWidth = penWidthSlider.valueAsNumber.toInt();
+    penWidth = penWidthSlider.valueAsNumber.truncate();
     drawFrame(0.0);
   }
 
@@ -157,7 +157,7 @@ class Spirodraw {
     if (run && rad <= maxTurns * PI2) {
       rad+=stepSize;
       drawFrame(rad);
-      int nTurns = (rad / PI2).toInt();
+      int nTurns = (rad / PI2).truncate();

[Lasse Reichstein Nielsen, 2013/01/04 10:29:42]

/ -> ~/ ?

[floitsch, 2013/03/11 13:39:15]

done in different CL.

       numTurns.text = '${nTurns}/$maxTurns';
       window.requestAnimationFrame(animate);
     } else {
@@ -178,7 +178,7 @@ class Spirodraw {
     int ru = rUnits.abs();
     int wrUnits = RUnits + rUnits;
     int g = gcf (wrUnits, ru);
-    return (ru ~/ g).toInt();
+    return ru ~/ g;
   }
 
   void stop() {