//declaring the variables for RGB triangle dimensions float red; float green; float blue; float alpha; float trianglew; float triangleh; float num; int counter; //instructions to create the new circles Circle myCircle = new Circle (10, 150, 5); Circle myCircle2 = new Circle (10, 90, 6); Circle myCircle3 = new Circle (150, 150, 10); void setup() { //set window size size(900, 500); smooth(); //set background to a randomly generated color background(red, green, blue); frameRate(500); counter = 0; } void draw() { noStroke(); //white text with size 14 //centrally aligned text //values for the variables //randomly generated red, green and blue decimal values red = random(55); green = random(55); blue = random(55); //randomly generated alpha value up to the decimal of 155 alpha = random(2); //randomly generated heights and widths of the triangles trianglew = random(width); triangleh = random(570); num = random(600); //randomly generated color and dimensions of triangles from mouse co-ordinates in window fill(red, green, blue, alpha); triangle(trianglew, triangleh, num, num, mouseX, mouseY); //randomly generated color of "mouse clicked" circles in window counter++; fill (red, green, blue); //randomly generated sized circles from mouse co-ordinates when clicked in window if(mousePressed == true) { ellipse(mouseX, mouseY, 175*sin(counter), 5*sin(counter)); } //calls the update for circles colliding with window walls myCircle.checkCollisions (); myCircle2.checkCollisions (); myCircle3.checkCollisions (); //calls the update for the speed of the circles myCircle.update (); myCircle2.update (); myCircle3.update (); //calls the update to draw the circles myCircle.drawCircle(); myCircle2.drawCircle(); myCircle3.drawCircle(); } class Circle { //defining the circles, speed and position float x; float y; float xspeed; float yspeed; float circleSize; Circle (float xpos, float ypos, float cSize) { x = xpos; y = ypos; circleSize = cSize; //creating a speed for the circles //adding random changes from -25 backwards speed to +25 forwards speed xspeed = random (-25, 25); yspeed = random (-25, 25); } void update () { //update function as another class to the circle x += xspeed; y += yspeed; } void checkCollisions () { //checks the collisions to prevent the circles from exiting the window //if x is less than or more than window width, minus speed if ( (x<0) || (x>width)) { xspeed = -xspeed; } //if y is less than or more than window height, minus speed if ( (y<0) || (y>height)) { yspeed = -yspeed; } } void drawCircle () { //set randomly generated color sizes fill (random (255), random (255), random (255)); ellipse (x, y, circleSize, circleSize); } } void keyPressed() { //resets the interaction when space bar is pressed if (key == ' ') { background(red, green, blue); } //screenshots the interaction when enter is pressed if (key == ENTER) { saveFrame("screenshot.png"); } }

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Tweak of Twk: Twk: Twk: AC21010.3 - Group 4
by simon phillips

fun with circles pt4!