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 +++++++++
 rotord/cvimage.h   | 1 +
 rotord/rotor.h     | 5 +++++
 3 files changed, 15 insertions(+)

(limited to 'rotord')

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;
diff --git a/rotord/cvimage.h b/rotord/cvimage.h
index a8a7a09..44cbca8 100644
--- a/rotord/cvimage.h
+++ b/rotord/cvimage.h
@@ -160,6 +160,7 @@ namespace Rotor {
 			//believe these still work, don't know if these optimisations are better than opencvs..
 			Image & operator+=(const Image &other);
 			Image & operator*=(const Image &other);
+			Image & operator^=(const Image &other);
 			Image & alpha_blend(const Image &other);
 			Image & alpha_blend_cv(const Image &other);
 			Image & alpha_merge(const Image &other);
diff --git a/rotord/rotor.h b/rotord/rotor.h
index 1b68f2b..293d3fa 100755
--- a/rotord/rotor.h
+++ b/rotord/rotor.h
@@ -1012,6 +1012,7 @@ namespace Rotor {
 	#define BLEND_alpha 4
 	#define BLEND_screen_wrap 5
 	#define BLEND_multiply_wrap 6
+	#define BLEND_xor 7
 	class Blend: public Image_node {
 		public:
 			Blend(){image=nullptr;};
@@ -1026,6 +1027,7 @@ namespace Rotor {
 				if (_mode=="alpha") mode=BLEND_alpha;
 				if (_mode=="screen_wrap") mode=BLEND_screen_wrap;
 				if (_mode=="multiply_wrap") mode=BLEND_multiply_wrap;
+				if (_mode=="xor") mode=BLEND_xor;
 			};
 			void link_params() {
 				for (auto p:parameter_inputs){
@@ -1049,6 +1051,9 @@ namespace Rotor {
 									case BLEND_multiply:
 										(*image)*=(*(((Image_node*)image_inputs[1]->connection)->get_output(frame)));
 										break;
+									case BLEND_xor:
+										(*image)^=(*(((Image_node*)image_inputs[1]->connection)->get_output(frame)));
+										break;
 									case BLEND_alpha:
 										(*image)=(*image).alpha_blend(*(((Image_node*)image_inputs[1]->connection)->get_output(frame)));
 										break;
-- 
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