TLIGHT_PRODUCTS / WS281X

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Diff: WS281X.cpp

Revision:
34:5a141ed5d52a
Parent:
32:64c391617f6c
Child:
35:dffa06d09fdc
diff -r 9ffb9a4abbf0 -r 5a141ed5d52a WS281X.cpp
--- a/WS281X.cpp	Mon Oct 31 17:50:12 2016 +0000
+++ b/WS281X.cpp	Fri Nov 04 13:19:38 2016 +0000
@@ -416,6 +416,14 @@
     {
         if (index + len > _numPixels)
             len = _numPixels - index;
+
+        if (index < 0)
+		{
+			len = len - (-index);
+			color += (-index);
+			index = 0;
+		}
+
         memcpy(&_pixels[index], color, len * sizeof(_pixels[0]));
     }
 }
@@ -426,6 +434,14 @@
     {
         if (index + len > _numPixels)
             len = _numPixels - index;
+
+        if (index < 0)
+		{
+			len = len - (-index);
+			color += (-index);
+			index = 0;
+		}
+
         RGBColor *dest = &_pixels[index];
         do
         {