void testApp::draw(){

    tex1.begin();

        if(bNoise==false)
        {
            ofSetHexColor(0xFFFFFF);
            ofFill();
            ofCircle(ofGetWidth()/2, ofGetHeight()/2, ofGetHeight()/2);

            ofSetHexColor(0x0000FF);
            ofFill();
            ofCircle(xWords, yWords, ofGetHeight()/6);

            ofSetHexColor(0x000000);
            ofFill();
            ofCircle(xWords, yWords, ofGetHeight()/10);
        }
        else
        {
            ofSetHexColor(0x000000);
            ofFill();
            ofCircle(ofGetWidth()/2, ofGetHeight()/2, ofGetHeight()/2);

            ofSetHexColor(0xFF0000);
            ofFill();
            ofCircle(xWords, yWords, ofGetHeight()/6);

            ofSetHexColor(0x110000);
            ofFill();
            ofCircle(xWords, yWords, ofGetHeight()/8);
        }

    tex1.end();

    ofEnableNormalizedTexCoords();

    tex1.bind();
    fishShader.begin();
    fishShader.setUniformTexture("tex0", tex1, 0);
    fishShader.setUniform1f("signcurvature", curvature);
    fishShader.setUniform1f("lensradius", radius);

    ofPushMatrix();
    ofTranslate(320, 240);
    glBegin(GL_QUADS);
    glTexCoord2f(0,0); glVertex3f(0,0,0);
    glTexCoord2f(1,0); glVertex3f(320,0,0);
    glTexCoord2f(1,1); glVertex3f(320,240,0);
    glTexCoord2f(0,1); glVertex3f(0,240,0);
    glEnd();
    ofPopMatrix();
    fishShader.end();
    tex1.unbind();