From: Shaheen Gandhi <shaheen@fb.com>
Date: Wed, 14 Aug 2013 04:10:29 +0000 (-0700)
Subject: [Helix] Soften edges
X-Git-Url: https://git.piment-noir.org/?p=SugarCubes.git;a=commitdiff_plain;h=c27cb07897f82f0b9f515587855a1473def2a312

[Helix] Soften edges
---

diff --git a/ShaheenGandhi.pde b/ShaheenGandhi.pde
index 5ab568e..740883d 100644
--- a/ShaheenGandhi.pde
+++ b/ShaheenGandhi.pde
@@ -120,9 +120,11 @@ class HelixPattern extends SCPattern {
       // the helix.  Figure out if the current point is inside that
       // region.
       float d = PVector.dist(p, toroidPoint);
-      boolean inToroid = abs(d) < girth;
+      boolean inToroid = d < girth;
       
-      return color((lx.getBaseHuef() + (360*(phase / TWO_PI)))%360, (inToroid ? 100 : 0), (inToroid ? 100 : 0));
+      // Soften edges by fading brightness
+      float b = constrain(100*(1 - ((d-.5*girth)/(girth*.5))), 0, 100);
+      return color((lx.getBaseHuef() + (360*(phase / TWO_PI)))%360, (inToroid ? 80 : 0), b);
     }
   }
 
@@ -158,6 +160,7 @@ class HelixPattern extends SCPattern {
     // parameterized t value.  select base pairs and
     // associated colors.  lerp between colors for each
     // base pair to produce a DNA effect.
+    
   }
   
   void run(int deltaMs) {