add xor blending

1 files changed, 9 insertions, 0 deletions

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;