"Functii" - Processing

ID	Autor	Duplicat din	Ultima modificare
`#1797`	Lazar Ionut Radu (LazarIonutRadu)	-	Marti, 24 apr 2018, 20:33
var y;
var limit;
var scale;

function setup() {
	createCanvas(400, 400);
  	translate(200,200);
  
  	limit = -200;
 	scale = 40;
}

function draw() {
	
  	draw_grid();
  	draw_function();
  
  	if( limit > 220 )
      noLoop();

  	draw_info();
}

function draw_grid()
{
	background(200);
  	stroke(0);
  	strokeWeight(2);
  	line(0,200,0,-200);
  	line(200,0,-200,0);
  
  	for( var x=-200 ; x<=200 ; x+=scale )
    {
    	stroke(255, 25, 25);
  		strokeWeight(4);
      	point(x,0);
      	point(0,x);
    }
}

function f(x)
{
  	return (x+x*2/abs(x))*(x+x*2/abs(x))/2;
	//return sin(x*x);
  	//return log(x);
  	//return sqrt(x);
  	return x*x/2;
}

function f2(x)
{
	return (x-x*2/abs(x))*(x-x*2/abs(x))/2;
}

function f3(x)
{
  	return (x-x*2/abs(x))*(x-x*2/abs(x))/2;
}

function f4(x)
{
	return cos(x+HALF_PI);
}

function draw_function()
{
  
  	for( var x=-200 ; x<=limit ; x+=1 )
    {
      	stroke(201, 100, 100);
      	strokeWeight(3);
      	line(x,-scale*f(x/scale),(x-1),-scale*f((x-1)/scale));
      	//point(x,scale*-f(x/scale));
      
      	stroke(96, 107, 196);
      	line(x,-scale*f2(x/scale),x-1,-scale*f2((x-1)/scale));
      	//point(x,scale*-f2(x/scale));
      	
	    stroke(165, 89, 154);
		//line(x,-scale*f3(x/scale),x-1,-scale*f3((x-1)/scale));
      	//point(x,scale*-f3(x/scale));
      
      	stroke(111, 163, 71);
      	//line(x,-scale*f4(x/scale),x-1,-scale*f4((x-1)/scale));
      	//point(x,scale*-f4(x/scale));
    }
  	limit++;
  
  	stroke(255, 25, 25);
  	strokeWeight(7);
  	point(limit,0);
}

function draw_info()
{
  	stroke(0);
 	strokeWeight(2);
  	fill(120);
	rect(-180,-180,100,50);
  	
  	fill(0);
  	strokeWeight(1);
  	text("X = " + limit/scale, -170, -150);
}