Audrey Zheng – Project – 07

sketch

//Audrey Zheng
//Section A
//audreyz@andrew.cmu.edu
//Project-07


function setup() {
    createCanvas(400, 600);
}

function draw() {
	background(81,60,85);
    push();
    translate(width / 2, height / 3);

	drawHypotrochoid();
	drawHypocycloid();
	drawEpicycloid();

	pop();

	drawFlower(40,20);
    
}

function drawFlower(x,y) {

    translate(x, y);
	drawHypotrochoid();
	drawHypocycloid();
	drawEpicycloid();



}

function drawHypotrochoid() {
	var x;
	var y;

	var a = 100; //radius
	//var a = map(mouseX,0,width, 50,90);
	var b = 20; //spirograph radius

	//var b = map(mouseX,0,width,5,20);
	 //distance pen to center of spirograph

	var h = map(mouseX, 0, width, 40,60);

	
	//var h = map(mouseX, 0, width, 40,60);

	angleMode(DEGREES);
	stroke(189,230,137);
	fill(82,82,115);

	beginShape();


	for (var t = 0; t < 360; t++) {
		x = (a - b) * cos(t) + h * cos(((a - b)/b) * t);
		y = (a - b) * sin(t) - h * sin(((a - b))/b * t);


	
		vertex(x,y);


	}

	endShape(CLOSE);



}

function drawHypocycloid() {
	var x;
	var y;

	var a = 50; //radius
	//var a = map(mouseX,0,width, 50,90);
	var b = 10; //spirograph radius
	var n =  a/b;

	angleMode(DEGREES);

	stroke(98,210,159);
	fill(57,138,166,70);

	beginShape();
	var multiple = map(mouseY,0,height, -1,1)

	for (var phi = 0; phi <360; phi ++) {
		
		x = (a/n) * ((n-1) * cos(phi) - cos((n-1) * phi));

		y = (a/n) * ((n-1) * sin(phi) + sin((n-1) * phi));

		vertex(multiple *x,multiple *y);

	}
	endShape(CLOSE);
}

function drawEpicycloid() {
	var x;
	var y;

	var a = 40; //radius
	//var a = map(mouseX,0,width, 50,90);
	var b = 5; //spirograph radius

	angleMode(DEGREES);


	beginShape();


	var multiple = map(mouseY, 0, height, 1,2);;

	for (var phi = 0; phi <360; phi ++) {
		
		x = (a+ b) * cos(phi) - b * cos(((a + b)/b) * phi);

		y = (a + b) * sin(phi) -  b * sin(((a+b)/b) * phi);

		vertex(multiple *x, multiple *y);




	}
	endShape(CLOSE);

}