Animation not showing


Hello, I am new to OpenFrameworks. I have converted a processing sketch to OpenFrameworks. There is no errors however, the animation is not showing. Please Help Thanks!

code- header file

#pragma once

#include “ofMain.h”

class ofApp : public ofBaseApp{

	void setup();
	void update();
	void draw();
void linePlot(int xPos, int yPos);

	void keyPressed(int key);
	void keyReleased(int key);
	void mouseMoved(int x, int y );
	void mouseDragged(int x, int y, int button);
	void mousePressed(int x, int y, int button);
	void mouseReleased(int x, int y, int button);
	void mouseEntered(int x, int y);
	void mouseExited(int x, int y);
	void windowResized(int w, int h);
	void dragEvent(ofDragInfo dragInfo);
	void gotMessage(ofMessage msg);

int x;
int y;
float move;
int tol;
float fac;
int lineOpa;
int stroke;

//int xPos; int yPos;
float angle;
float mouseDist;

#include “ofApp.h”

void ofApp::setup(){

move= 0.05;
lineOpa= 150;
stroke= 10;
tol= 50;
fac= 0.0125;



void ofApp::update(){


void ofApp::draw(){

//void linePlot(int xPos, int yPos);

for (int i = 50; i< (ofGetWidth()-25); i += 25){
    for (int j= 50; j< ofGetHeight()-25; j +=25){
        ofMap(i, 0, 500, 0, 255), ofMap(j, 0, 500, 0, 255);

   void linePlot(int xPos, int yPos);


void ofApp::linePlot(int xPos, int yPos){



ofTranslate(ofGetWidth()/2, ofGetHeight()/2); //xPos, yPos

angle= atan2(ofGetMouseX() - xPos, ofGetMouseY() - yPos);

mouseDist = ofDist(ofGetMouseX(), ofGetMouseY(), xPos, yPos);

ofRotate(angle - PI, 0, 0, 1);
//ofRotate(angle - PI);

if (ofDist(ofGetMouseX(), ofGetMouseY(), xPos, yPos)){
    ofDrawLine(0, 0, mouseDist, 0);
    ofDrawLine(0, 0, tol/ (mouseDist * fac), 0);




I think you are painting a white line over a white background. Try ofSetColor(0); to set the current color to black.
Hope that helps!


hello Jordi, it worked!! I really appreciate it thank you so much! :slight_smile: