TLIGHT_PRODUCTS / WS281X

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Diff: PixelBuffer.cpp

Revision:
34:5a141ed5d52a
Parent:
32:64c391617f6c
Child:
35:dffa06d09fdc
--- a/PixelBuffer.cpp	Mon Oct 31 17:50:12 2016 +0000
+++ b/PixelBuffer.cpp	Fri Nov 04 13:19:38 2016 +0000
@@ -95,6 +95,13 @@
     {
         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]));
     }
 }
@@ -105,6 +112,14 @@
     {
         if (index + len > _numPixels)
             len = _numPixels - index;
+
+        if (index < 0)
+		{
+			len = len - (-index);
+			color += (-index);
+			index = 0;
+		}
+
         RGBColor *dest = &_pixels[index];
         do
         {
@@ -299,6 +314,14 @@
     {
         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]));
     }
 }
@@ -309,6 +332,14 @@
     {
         if (index + len > _numPixels)
             len = _numPixels - index;
+
+        if (index < 0)
+		{
+			len = len - (-index);
+			color += (-index);
+			index = 0;
+		}
+
         HSVColor *dest = &_pixels[index];
         do
         {