TimeFrame/phase two at master · Mehrbano/TimeFrame · GitHub

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#include "ofApp.h"
//========================================================================
int main( ){
    ofSetupOpenGL(1000,600, OF_WINDOW);
    // <-------- setup the GL context
    // this kicks off the running of my app
    // can be OF_WINDOW or OF_FULLSCREEN
    // pass in width and height too:
    ofRunApp( new ofApp());
}
//========================================================================

#pragma once

#include "ofMain.h"
#include "ofxOpticalFlowFarneback.h"

#define ROWS 100
#define COLUMNS 100
#define O_NUTS ROWS * COLUMNS

class ofApp : public ofBaseApp {
	public:
		void setup();
		void update();
		void draw();

//IMPORT VIDEO
        ofVideoPlayer video;
//CAM
        ofVideoGrabber vidGrabber;
//DECLARE OPTIC FLOW
		ofxOpticalFlowFarneback flowSolver;
//INTS/FLOATS
        float rotation [O_NUTS];
		    float rotationVelocity [O_NUTS];
        float speed;
        float dx, dy, xin, yin, x, y, segLength;
//TO IMPORT IMAGES
        ofImage image2;
};
//========================================================================

#include "ofApp.h"
#define WIDTH  1000
#define HEIGHT 600

//--------------------------------------------------------------

void ofApp::setup() {

    ofSetBackgroundColor(255);
    ofSetBackgroundColor(false);
	  ofEnableDepthTest();
    ofEnableAlphaBlending();
	  vidGrabber.setDesiredFrameRate(30);
	  vidGrabber.initGrabber (320, 240);

// LOAD VIDEO OF PHASE ONE
    video.loadMovie( "Final_Second_Term_Small.mov" );
    video.play();
// LOAD IMAGE
    image2.load("mk2.png");
    image2.resize(WIDTH, HEIGHT);
// FROM OPTICALFLOWFARNEBACK ADDON
    flowSolver.setup (vidGrabber.getWidth(),vidGrabber.getHeight(), 0.35, 1, 100, 1, 3, 0.25, false, false);
    for(int i=0; i<O_NUTS; i++){
		rotation[i] = 360;
	}
}

//--------------------------------------------------------------

void ofApp::update() {

	video.update();
    vidGrabber.update();
	  if(vidGrabber.isFrameNew()){
		flowSolver.update(vidGrabber);
	}
// ROTATION VALUE & VELOCITY SLOW DOWN // FROM OPTICALFLOWFARNEBACK
	  for(int i = 0; i < O_NUTS; i++) {
		 rotation[i] += rotationVelocity[i];
		 rotationVelocity[i] *= 0.9;
	}
}

//--------------------------------------------------------------

void ofApp::draw() {
    ofSetBackgroundColor(255, 0, 0);
//PLAY VIDEO IN BACKGROUND
    video.draw(0, 0, WIDTH, HEIGHT);
//OPTICALFLOW
    float d = ofGetWidth() / COLUMNS ;
	  float p = ofGetWidth() / ROWS ;
	  float se = image2.getHeight() / COLUMNS ;     // SQUARE FROM CAM
	  float sw = image2.getHeight() / ROWS ;        // SQUARE FROM CAM
    int i = 0;
    for (int row = 0; row < ROWS; row++){
    	for(int column = 0; column < COLUMNS; column++){
      float x = row * d;
			float y = column * p;
			float nx = row * se;
			float ny = column * sw;
//MIDDLE GRID FLOW
            float angle = TWO_PI;
            float fx = nx + (se/2) * angle;
			      float fy = ny + (sw/2);
		ofPoint flow = flowSolver.getVelAtPixel(fx, fy);
		rotationVelocity[i] += flow.length() / 3.0;

			ofPushMatrix();
      ofTranslate(x-(d/2), y);
			ofRotateY(rotation[i]);
      ofTranslate(-(d/2), 0);
      image2.getTextureReference().drawSubsection(0, 0, d, p, nx, ny, se, sw);
      ofPopMatrix();

        i++;
		}
	}
}