Project : 07

For this project, I decided to use three different kinds of curves and represent them in different ways in order to create an interesting hierarchy of visuals and different point on the canvas.

//Aadya Bhartia
//Section A 
//abhartia@cmu.edu

/*The code aims to use three main types of curves and modify them based on the X and Y position the mouse
Each set of curves are represented in different ways making the code more visually interesting */

var angle = 0;
var numP = 10000;

function setup() {
    createCanvas(480, 480);
}

function draw() {
	background(245, 211, 200);
	var midX = width/2;
	var midY = height/2;
	var currentX = constrain(mouseX, 0, midX);
	var currentY = constrain(mouseY, 0, midY);
	noFill();
	translate(midX, midY); //transa;lting origin to centre of canvas 
	var m = map(constrain(mouseX, 0, width), 0, width, 0,width/60);
	push();
	rotate(radians(angle));
	angle +=mouseY/4; // making the set of curves rotate based on mouse position
	drawHypotrochoid1(currentX,currentY); 
	pop();
	drawHypotrochoid2();
	drawRose(m);
}
//Rose rhodonea curve set mapped with rectangles
function drawRose(m){
	fill(2, 58, 80); //dark blue 
	noStroke();
	var roseW = 18;
	for(var i = 0; i < numP/10;i++){ // reducing density of points 
		var roseMap = map(i, 0, numP/10, 0, TWO_PI);
		//The design chnages based on MouseX 
		var n = int(map(mouseX, 0, width, 1, width/15));
		var radius = -m*cos(n*roseMap);
		var x = roseW*radius*cos(roseMap);
		var y = roseW*radius*sin(roseMap);
		rect(x-1,y-1,4,4); // makinf the shape out of smaller rectangles instead of curves 
	}
}
// Hypotrochoid curve set 1
function drawHypotrochoid1(currentX,currentY){
	var a = 5;
	for(var k = 0;k<=PI*2;k+= PI/10){
		for(var i = 0; i<width/40;i++){
			push();
			strokeWeight(2);
			//every alternate stroke uses a different shade of blue 
			if(i%2 == 0){
				stroke(3, 168, 155);
			}
			else{
				stroke(188, 248, 236 );
			}
			rotate(k);
			ellipse(currentX + a*i, currentY + a*i, 2*mouseX/2, 2*mouseY/2);
			pop();
		}
	}
}
// Hypotrochoid curve set 2
function drawHypotrochoid2(){
	stroke(115, 75, 94); //maroon
	noFill();
	strokeWeight(3.5);
	var hypoMapY = map(mouseY, 0 , height, 0, width/4); //curve shape evolves based on Mouse Y 
	//Mouse X controls the size of the curve 
	var a = map(constrain(mouseX,0,width), 0 , width , 0, width/2);
	var b = a/20;
	beginShape();
	for(var i = 0; i<numP; i++){
		var hypoMap = map(i,0,100,0,PI);
		var x = (a - b) * cos(hypoMap)+ hypoMapY* cos(((a-b)/b)*hypoMap);
		var y = (a-b) * sin(hypoMap) - hypoMapY * sin(((a - b)/b)*hypoMap);
		vertex(x,y);
	}
	endShape();
}