initial commit

1 files changed, 154 insertions, 0 deletions

diff --git a/glitcher/src/ofApp.cpp b/glitcher/src/ofApp.cpp
new file mode 100644
index 0000000..6055485
--- /dev/null
+++ b/glitcher/src/ofApp.cpp
@@ -0,0 +1,154 @@
+#include "ofApp.h"
+
+
+//--------------------------------------------------------------
+void ofApp::setup() {
+	ofSetLogLevel(OF_LOG_WARNING);
+	
+	ofSetFrameRate(60);
+	
+	buffer.allocate(ofGetWidth(),ofGetHeight());
+	renderFBO.allocate(ofGetWidth(),ofGetHeight(),GL_RGB);
+	//buffer.clear();
+}
+
+//--------------------------------------------------------------
+void ofApp::update() {
+	ofSetWindowTitle(ofToString(ofGetFrameRate()));
+}
+
+//--------------------------------------------------------------
+void ofApp::draw() {
+
+	//rough out how it could be possible to perform an avs style glitch transform
+	//within a drawing
+	//drawing- to an fbo
+	//distorting- from an opencv texture
+	//how to get from an fbo to an opencv texture
+	ofSetColor(255, 255, 255);
+	
+	renderFBO.begin();
+	buffer.draw(0,0);
+
+
+	ofNoFill();
+	ofTranslate(ofGetWidth()/2,ofGetHeight()/2);
+    ofRect(-20,-20,40,40);
+    renderFBO.end();
+    renderFBO.readToPixels(buffer.getPixelsRef());
+    buffer.flagImageChanged();
+
+    cv::Mat buf = buffer.getCvImage();
+    cv::Mat dstbuf;
+
+    //create low res remap target
+
+    cv::Mat dstX(32,24,CV_32FC1);
+    cv::Mat dstY(32,24,CV_32FC1);
+    cv::Mat srcX(32,24,CV_32FC1);
+    cv::Mat srcY(32,24,CV_32FC1);
+
+    float xFactor=ofGetWidth()/dstX.rows;
+    float yFactor=ofGetHeight()/dstX.cols;
+    for (int i=0;i<dstX.cols;i++){
+    	for (int j=0;j<dstX.rows;j++){
+    		dstX.at<double>(i,j)=i*xFactor;
+    		dstY.at<double>(i,j)=j*yFactor;
+    	}
+    }
+
+    //transform the low res matrix
+    float tX=0; //fraction of image
+    float tY=0; //fraction of image
+    float oX=0; //fraction of image
+    float oY=0; //fraction of image
+    float s=0.99;
+    float r=0.0;
+
+    cv::Point2f srcTri[3], dstTri[3];
+	cv::Mat rot_mat(2,3,CV_32FC1);
+	cv::Mat trans_mat(2,3,CV_32FC1);
+	cv::Mat out_mat(3,3,CV_32FC1);
+
+	// Compute matrix by creating triangle and transforming
+	srcTri[0].x=0;
+	srcTri[0].y=0;
+	srcTri[1].x=dstX.rows-1;
+	srcTri[1].y=0;
+	srcTri[2].x=0;
+	srcTri[2].y=dstX.cols-1;
+	for (int i=0;i<3;i++){
+		dstTri[i].x=srcTri[i].x+(tX*dstX.cols);
+		dstTri[i].y=srcTri[i].y+(tY*dstX.cols); //use cols for equiv coords
+		//rotate and scale around centre
+		//transform to centre
+		dstTri[i].x-=(oX*dstX.cols);
+		dstTri[i].y-=(oY*dstX.cols);
+
+		dstTri[i].x*=s;
+		dstTri[i].y*=s;
+
+		double dx=(dstTri[i].x*cos(r))-(dstTri[i].y*sin(r));
+		double dy=(dstTri[i].x*sin(r))+(dstTri[i].y*cos(r));
+
+		dstTri[i].x=dx;
+		dstTri[i].y=dy;
+
+		//transform back
+		dstTri[i].x+=(oX*dstX.cols);
+		dstTri[i].y+=(oY*dstX.cols);
+	}
+	trans_mat=getAffineTransform( srcTri, dstTri );
+	warpAffine( srcX, dstX, trans_mat, srcX.size(), cv::INTER_NEAREST, cv::BORDER_WRAP);
+	warpAffine( srcY, dstY, trans_mat, srcX.size(), cv::INTER_NEAREST, cv::BORDER_WRAP);
+
+	cv::Mat scaledstX;
+	cv::Mat scaledstY;
+
+	cv::resize(dstX,scaledstX, cv::Size(ofGetWidth(),ofGetHeight()), 0, 0, cv::INTER_NEAREST);
+	cv::resize(dstY,scaledstY, cv::Size(ofGetWidth(),ofGetHeight()), 0, 0, cv::INTER_NEAREST);
+
+	cv::remap(buf,dstbuf,scaledstX,scaledstY, cv::INTER_LINEAR, cv::BORDER_WRAP, cv::Scalar(0,0, 0) );
+	IplImage *tmp = new IplImage(dstbuf);
+
+	buffer=tmp;
+	delete tmp;
+
+    renderFBO.draw(0,0); //eventually textured into a viewport
+
+}
+
+
+
+//--------------------------------------------------------------
+void ofApp::exit() {
+	
+}
+
+//--------------------------------------------------------------
+void ofApp::keyPressed (int key) {
+	switch (key) {
+			
+		case OF_KEY_UP:
+			break;
+			
+		case OF_KEY_DOWN:
+			break;
+	}
+}
+
+//--------------------------------------------------------------
+void ofApp::mouseDragged(int x, int y, int button)
+{}
+
+//--------------------------------------------------------------
+void ofApp::mousePressed(int x, int y, int button)
+{}
+
+//--------------------------------------------------------------
+void ofApp::mouseReleased(int x, int y, int button)
+{}
+
+//--------------------------------------------------------------
+void ofApp::windowResized(int w, int h)
+{}