Project-05-Wallpaper

// Emily Franco
// Section C
// efranco@andrew.cmu.edu
// Project-05
 

var colorState; 

function setup() {
    createCanvas(500, 500);
    background (255,248,228);
}

function draw() { 
	var dim = 70;
	var rad = dim/2;
	colorState = 0; 

	for (var x=rad;x<=width-rad;x+=dim*2){
		for (var y=rad;y<=height-rad;y+=dim){
			cirColorOne(colorState);
			drawPiece(x,y,dim,rad);
		}
	}
	

	for (var x=dim+rad;x<=width-rad;x+=dim*2){
		for (var y=rad;y<=height-rad;y+=dim){
			cirColorTwo(colorState);
			drawPiece(x,y,dim,rad);
		}
	}


	noLoop();
} 

function drawPiece (x,y,dim,rad){
	var angleX;
	var angleY;

	//move origin
	translate (x,y);

	push();
	//random rotation angle from array
	randRot();

	push();
	noStroke();
	//draw semi circle
	arc(0,0,dim,dim,radians(90), radians(270),CHORD);
	pop(); 

	//draw lines in piece 
	for(var polarPos=85;polarPos>=10;polarPos-=5){
		angleX = rad*cos(radians(polarPos));
		angleY = rad*sin(radians(polarPos));

		strokeWeight(0.25);
		line(angleX,-angleY,angleX,angleY);

		//increase gap between lines so they dont blur together
		if(polarPos<=30){
			polarPos -=2;
		}
	}

	pop();

	//reset origin
    translate(-x,-y);
}

function randRot(){
	//rotate piece at one of 4 angles
	var rotateAngles = [0,90,180,270];

	//selec rand int
	var rotAngle = floor(random(0,4));
	rotate (radians(rotateAngles[rotAngle])); 
}

function cirColorOne(state){
	if(state==0){
		//yellow
		fill(255,206,109);
	}else if(state==1){
		//black
		fill(49,49,49);
		colorState = -1;
	}
	colorState+=1;
}

function cirColorTwo(state){
	if(state==0){
		//orange
		fill(255,105,33); 
	}else if(state==1){
		//blue
		fill(125,173,198); 
		colorState = -1;
	}
	colorState+=1;
}