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#pragma once
#include "ofMain.h"
#include "ofxOpenCv.h"
class audioGlitcher {
public:
ofxCvColorImage buffer;
ofFbo renderFBO;
IplImage tmp;
vector<float> *samples;
int interp_x,interp_y;
float trans_x,trans_y;
float scale;
float rotation;
float origin_x,origin_y;
void setup(int w,int h,vector<float> *s){
buffer.allocate(w,h);
renderFBO.allocate(w,h,GL_RGB);
samples=s;
origin_x=origin_y=0.5f;
trans_x=trans_y=0.0f;
scale=1.0f;
rotation=0.0f;
interp_x=16;
interp_y=12;
}
void set_interp(int ix,int iy){
interp_x=ix;
interp_y=iy;
}
void set_trans(float x,float y){
trans_x=x;
trans_y=y;
}
void set_scale(float s){
scale=s;
}
void set_origin(float x,float y){
origin_x=x;
origin_y=y;
}
void draw(int x,int y){
renderFBO.draw(x,y);
}
void update(){
renderFBO.readToPixels(buffer.getPixelsRef());
buffer.flagImageChanged();
//create low res remap target
cv::Mat dstX(interp_x,interp_y,CV_32FC1);
cv::Mat dstY(interp_x,interp_y,CV_32FC1);
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;
for (int i=0;i<srcX.cols;i++){
for (int j=0;j<srcX.rows;j++){
srcX.at<float>(j,i)=i*xFactor;
srcY.at<float>(j,i)=j*yFactor;
}
}
//transform the low res matrix
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;
float r=rotation;
cv::Point2f srcTri[3], dstTri[3];
// 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);
}
cv::Mat trans_mat=getAffineTransform(srcTri,dstTri);
warpAffine(srcX,dstX,trans_mat, srcX.size(), cv::INTER_LINEAR, cv::BORDER_WRAP);
warpAffine(srcY,dstY,trans_mat, srcY.size(), cv::INTER_LINEAR, cv::BORDER_WRAP);
cv::Mat scaledstX;
cv::Mat scaledstY;
cv::resize(dstX,scaledstX, cv::Size(renderFBO.getWidth(),renderFBO.getHeight()), 0, 0, cv::INTER_LINEAR);
cv::resize(dstY,scaledstY, cv::Size(renderFBO.getWidth(),renderFBO.getHeight()), 0, 0, cv::INTER_LINEAR);
cv::Mat buf = buffer.getCvImage();
cv::Mat dstbuf;
cv::remap(buf,dstbuf,scaledstX,scaledstY, cv::INTER_NEAREST, cv::BORDER_WRAP); //, cv::Scalar(0,0, 0) );
tmp = IplImage(dstbuf);
//buffer=tmp;
//buffer.remap(scaledstX,scaledstY);
buffer=&tmp;
renderFBO.begin();
//
ofSetColor(255,255,255);
buffer-=1;
buffer.draw(0,0);
//
//ofEnableAlphaBlending();
//ofSetColor(0,0,0,128);
//ofRect(0,0,ofGetWidth(),ofGetHeight());
//ofDisableAlphaBlending();
if (false){
ofNoFill();
ofPushMatrix();
ofTranslate(renderFBO.getWidth()/2,renderFBO.getHeight()/2);
ofRect(-20,-20,40,40);
ofPopMatrix();
}
if (true) {
ofPushMatrix();
ofTranslate(0,renderFBO.getHeight()/2);
ofSetColor(0,0,0);
ofFill();
ofBeginShape();
for (int i=0;i<samples->size();i++){
ofVertex(i,(*samples)[i]*renderFBO.getHeight());
}
ofEndShape();
ofSetColor(255,255,255);
ofNoFill();
ofBeginShape();
for (int i=0;i<samples->size();i++){
ofVertex(i,(*samples)[i]*renderFBO.getHeight());
}
ofEndShape();
ofPopMatrix();
}
renderFBO.end();
//renderFBO.flagImageChanged();
}
};
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