1 files changed, 19 insertions, 3 deletions
diff --git a/Colours.cpp b/Colours.cpp
index bb77e85..50b782d 100644
--- a/Colours.cpp
+++ b/Colours.cpp
@@ -6,6 +6,16 @@
 #include "Colours.h"
 
 Colours::Colours(int rPin,int gPin,int bPin) {
+    _initPINs(rPin,gPin,bPin);
+    _invert = false;
+}
+
+Colours::Colours(int rPin,int gPin,int bPin,bool invert) {
+    _initPINs(rPin,gPin,bPin);
+    _invert = invert;
+}
+
+void Colours::_initPINs(int rPin,int gPin,int bPin) {
     _rPin = rPin;
     _gPin = gPin;
     _bPin = bPin;
@@ -15,9 +25,15 @@ Colours::Colours(int rPin,int gPin,int bPin) {
 }
 
 void Colours::writeRGB(unsigned char r,unsigned char g,unsigned char b) {
-    analogWrite(_rPin, r);
-    analogWrite(_gPin, g);
-    analogWrite(_bPin, b);
+    if (_invert) {
+        analogWrite(_rPin, 255-r);
+        analogWrite(_gPin, 255-g);
+        analogWrite(_bPin, 255-b);
+    } else {
+        analogWrite(_rPin, r);
+        analogWrite(_gPin, g);
+        analogWrite(_bPin, b);
+    }
 }
 
 void Colours::writeHSV(unsigned int h,unsigned char s,unsigned char v) {