From caa1426e767efdba526c1d2df0b61aafbd6fcca7 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Fri, 28 Feb 2014 10:28:30 +0000
Subject: progressing glitchy transform

---
 glitcher/src/audioGlitcher.h | 39 +++++++++++++++++++++++++--------------
 glitcher/src/ofApp.cpp       |  4 ++--
 glitcher/src/ofApp.h         |  2 +-
 3 files changed, 28 insertions(+), 17 deletions(-)

(limited to 'glitcher')

diff --git a/glitcher/src/audioGlitcher.h b/glitcher/src/audioGlitcher.h
index 8f48288..caa4028 100644
--- a/glitcher/src/audioGlitcher.h
+++ b/glitcher/src/audioGlitcher.h
@@ -22,10 +22,10 @@ class audioGlitcher {
 			samples=s;
 			origin_x=origin_y=0.5f;
 			trans_x=trans_y=0.0f;
-			scale=1.0f;
+			scale=0.9f;
 			rotation=0.0f;
 			interp_x=16;
-			interp_y=12;
+			interp_y=9;
 		}
 		void set_interp(int ix,int iy){
 			interp_x=ix;
@@ -57,8 +57,8 @@ class audioGlitcher {
 		    cv::Mat srcX(interp_x,interp_y,CV_32FC1);
 		    cv::Mat srcY(interp_x,interp_y,CV_32FC1);
 
-		    float xFactor=renderFBO.getWidth()/srcX.cols;
-		    float yFactor=renderFBO.getHeight()/srcX.rows;
+		    float xFactor=(renderFBO.getWidth()-1)/(srcX.cols-1);
+		    float yFactor=(renderFBO.getHeight()-1)/(srcX.rows-1);
 		    for (int i=0;i<srcX.cols;i++){
 		    	for (int j=0;j<srcX.rows;j++){
 		    		srcX.at<float>(j,i)=i*xFactor;
@@ -66,9 +66,19 @@ class audioGlitcher {
 		    	}
 		    }
 
+		    //render =512x384
+		    //interp = 16x12
+		    //xFactor=34.133333 yFactor=34.90909
+
+		    // srcX.at (11,15)=480
+		    // srcY.at (11,15)=352
+
+		    // ==it is an effect caused by the pixels being computed at the centres
+		    // but finally being interpolated to the edges
+
 		    //transform the low res matrix
-		    float tX=trans_x-.05; //fraction of image
-		    float tY=trans_y-.04; //fraction of image
+		    float tX=trans_x; //-.05; //fraction of image
+		    float tY=trans_y; //-.04; //fraction of image
 		    float oX=origin_x; //fraction of image
 		    float oY=origin_y; //fraction of image
 		    float s=scale;
@@ -141,15 +151,9 @@ class audioGlitcher {
 			//ofRect(0,0,ofGetWidth(),ofGetHeight());
 			//ofDisableAlphaBlending();
 
-			if (false){
-				ofNoFill();
-				ofPushMatrix();
-				ofTranslate(renderFBO.getWidth()/2,renderFBO.getHeight()/2);   
-			    ofRect(-20,-20,40,40);
-			    ofPopMatrix();
-			}
+			bool useAudio=false;
 
-		    if (true) {
+		    if (useAudio) {
 			    ofPushMatrix();
 			    ofTranslate(0,renderFBO.getHeight()/2);
 
@@ -172,6 +176,13 @@ class audioGlitcher {
 
 			    ofPopMatrix();
 		    }
+		    else {
+				ofNoFill();
+				ofPushMatrix();
+				ofTranslate(renderFBO.getWidth()/2,renderFBO.getHeight()/2);   
+			    ofRect(-20,-20,40,40);
+			    ofPopMatrix();
+			}
 
 		    renderFBO.end();
 		    //renderFBO.flagImageChanged();
diff --git a/glitcher/src/ofApp.cpp b/glitcher/src/ofApp.cpp
index ec97933..a8937b7 100644
--- a/glitcher/src/ofApp.cpp
+++ b/glitcher/src/ofApp.cpp
@@ -9,9 +9,9 @@ void ofApp::setup() {
 
 	int bufferSize=	ofGetWidth(); //should be based on the size of glitch buffer
 
-	soundStream.listDevices();
+	//soundStream.listDevices();
 	//nb all you have to do to make audio work is to turn off pulseaudio in configuration
-	soundStream.setup(this, 0, 1, 44100, bufferSize, 1);
+	//soundStream.setup(this, 0, 1, 44100, bufferSize, 1);
 	samples.resize(bufferSize);
 
 	glitch.setup(ofGetWidth(),ofGetHeight(),&samples);
diff --git a/glitcher/src/ofApp.h b/glitcher/src/ofApp.h
index beaceaf..4767d0f 100644
--- a/glitcher/src/ofApp.h
+++ b/glitcher/src/ofApp.h
@@ -23,7 +23,7 @@ public:
 
 	audioGlitcher glitch;
 
-	ofSoundStream soundStream;
+	//ofSoundStream soundStream;
 	vector<float> samples;
 
 	int frame;
-- 
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