From 0c2b109bcac035e5fd9370b78eecad7cf40793cc Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@herge.(none)>
Date: Thu, 18 Jul 2013 11:21:47 +0100
Subject: add xor blending

---
 rotord/cvimage.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'rotord/cvimage.cpp')

diff --git a/rotord/cvimage.cpp b/rotord/cvimage.cpp
index a82c1ec..c18c585 100644
--- a/rotord/cvimage.cpp
+++ b/rotord/cvimage.cpp
@@ -26,6 +26,15 @@ namespace Rotor {
 		}
 		return *this;
 	}
+	Image & Image::operator^=(const Image &other) {
+		if (other.w!=w||other.h!=h) {
+			cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+		}
+		else {
+			rgb^=other.rgb;
+		}
+		return *this;
+	}
 	Image & Image::add_wrap(const Image &other) {
 		if (other.w!=w||other.h!=h) {
 			cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
-- 
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