From f4170d6bfb763ad0af4002277a37dcd1692534d5 Mon Sep 17 00:00:00 2001
From: Comment <tim@gray.(none)>
Date: Fri, 26 Jul 2013 22:46:17 +0100
Subject: tidy files

---
 rotord/src/cvimage.cpp | 156 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 rotord/src/cvimage.cpp

(limited to 'rotord/src/cvimage.cpp')

diff --git a/rotord/src/cvimage.cpp b/rotord/src/cvimage.cpp
new file mode 100644
index 0000000..c18c585
--- /dev/null
+++ b/rotord/src/cvimage.cpp
@@ -0,0 +1,156 @@
+#include "cvimage.h"
+
+using namespace std;
+
+namespace Rotor {
+	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::operator*=(const Image &other) {
+		if (other.w!=w||other.h!=h) {
+			cerr<<"Rotor: cannot multiply images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+		}
+		else {
+			//rgb/=other.rgb; //does funny glitchy stuff
+			//could use cv::Mat.mul() here
+			for (int i=0;i<w*h*3;i++){
+				//calculate with tables
+				rgb.data[i]=pixels.multiply[rgb.data[i]][other.rgb.data[i]];
+			}
+		}
+		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;
+		}
+		else {
+			for (int i=0;i<w*h*3;i++){
+				//creates rainbow overload, openCV doesn't do this
+				rgb.data[i]=(unsigned char)(((int)other.rgb.data[i]+(int)rgb.data[i]));
+			}
+		}
+		return *this;
+	}
+	Image & Image::divide_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;
+		}
+		else {
+			for (int i=0;i<w*h*3;i++){
+				//creates rainbow overload, openCV doesn't do this
+				rgb/=other.rgb; //does funny glitchy stuff
+			}
+		}
+		return *this;
+	}
+	//THIS OPENCV VERSION IS SLOWER THAN THE OLDSKOOL VERSION BELOW
+	Image & Image::alpha_blend_cv(const Image &other) {
+		if (other.w!=w||other.h!=h) {
+			cerr<<"Rotor: cannot blend images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+			//why not??
+		}
+		else if (!other.alpha.data){
+			//default to full on alpha
+			rgb=other.rgb.clone();
+		}
+		else {
+			//overlay the other image based on its alpha values
+			//https://gist.github.com/Brick85/5009046 - this is a dumb way to do it?
+			//how to invert a matrix?
+			//'invert' is matrix invert - different
+			//subtract from a scalar (1) ?
+			vector<cv::Mat> ichans,ochans;
+			vector<cv::Mat> compchans;
+			cv::split(rgb,ichans);
+			cv::split(other.rgb,ochans);
+			uint8_t b=0xFF;
+			cv::Mat iA=b-other.alpha;
+			for (int i=0;i<3;i++) {
+				compchans.push_back(ichans[i].mul(iA,1.0/255.0)+ochans[i].mul(other.alpha,1.0/255.0));
+			}
+			merge(compchans,rgb);
+			//rgb+=other.rgb;
+			//for (int i=0;i<w*h*3;i++) {
+			//	rgb.data[i]=(uint8_t)(((((int)rgb.data[i])*(0xFF-other.alpha.data[i/3]))>>8)+((((int)other.rgb.data[i])*((int)other.alpha.data[i/3]))>>8));
+			//}
+		}
+
+		return *this;
+	}
+	Image & Image::alpha_blend(const Image &other) {
+		if (other.w!=w||other.h!=h) {
+			cerr<<"Rotor: cannot blend images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+			//why not??
+		}
+		else if (!other.alpha.data){
+			//default to full on alpha
+			rgb=other.rgb.clone();
+		}
+		else {
+			for (int i=0;i<w*h*3;i++) {
+				rgb.data[i]=(uint8_t)(((((int)rgb.data[i])*(0xFF-other.alpha.data[i/3]))>>8)+((((int)other.rgb.data[i])*((int)other.alpha.data[i/3]))>>8));
+			}
+		}
+		return *this;
+	}
+	Image & Image::alpha_merge(const Image &other) {
+		//converts the incoming image to monochrome and inserts it into the alpha channel of this image
+		if (other.w!=w||other.h!=h) {
+			cerr<<"Rotor: cannot merge alpha with different size! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+		}
+		else {
+			cv::cvtColor(other.rgb,alpha,CV_RGB2GRAY);
+		}
+		return *this;
+	}
+	//channel rearrangement
+	//RGBAZ - these are channels 0-4
+	//HSB - can also have these virtual channels 5-7
+	//convert channels- int outChannel[5] - {0,1,2,-5,4} - this mapping sends inverted brightness to alpha
+
+	//scalar operations allocate a new image.
+	//maybe this could not be the case if the data is owned by this image?
+	//need to look into auto_ptr
+	Image & Image::operator*=(const float &amount) {
+		rgb*=amount;
+		return *this;
+	}
+	Image * Image::operator*(const float &amount) {
+		Image *other=new Image(w,h);
+		other->rgb=rgb*amount;
+		return other;
+	}
+	Image * Image::operator+(const float &amount) {
+		uint8_t amt=(uint8_t)(amount*255.0f);
+		Image *other=new Image(w,h);
+		other->rgb=rgb+amt;
+		return other;
+	}
+	Image * Image::operator-(const float &amount) {
+		uint8_t amt=(uint8_t)(amount*255.0f);
+		Image *other=new Image(w,h);
+		other->rgb=rgb-amt;
+		return other;
+	}
+	Image * Image::operator/(const float &amount) {
+		Image *other=new Image(w,h);
+		other->rgb=rgb/amount;
+		return other;
+	}
+}
-- 
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