"hai vezi asta" - Processing

ID	Autor	Duplicat din	Ultima modificare
`#3755`	Maxim Teodor (maxim_teodor)	Grafic functie - copie1DD	Duminica, 01 mar 2020, 00:36
function setup() {
	createCanvas(400, 400);
  	
}

var pi = 3.14

function sign(x) {
  if (x == 0)
  	return 0;
  else if (x > 0)
    return 1;
  else
    return -1;
}

function f(x)
{
	//return x-(0.635*sin(x*pi));
  	//return 2*(sin(x*1.5705)-0.5);
  	//return sign(x);
  	//return 1/x;
  	//return sqrt(abs(x*x - 1));
  	//return 1.2*sin(x*pi)+0.31*sin(x*pi*3)+0.11*sin(x*pi*5)+0.033*sin(x*pi*7);
  	return tan(x);
}

var scala = 4;

/////////////////////////

var pas = -190;

function draw() 
{
  	var segment = 180 / scala; // lungimea segmentului unitate
  	
  	//fundalul
  	background(255);
  	
  	//axele
	line(200,10,200,390);
  	line(10,200,390,200);
  	
  	//marchez unitatile pe axe
  	push();
  	stroke("red");
  	strokeWeight(3);
  	point(200,200);
  	for(var i = 1 ; i <= scala ; i ++)
    {
      	point(200 + i * segment, 200);
      	point(200 - i * segment, 200);
      	point(200, 200 + i * segment);
      	point(200, 200 - i * segment);
    }
  	pop();
  	
  	//abscisa curenta
  	push();
  	stroke("green");
  	strokeWeight(5);
  	point(200 + pas, 200);
  	pop();
  	i1 = 0, j1 = 0, gasit = false;
  	//desenez graficul pana la abscisa curenta
	for(var i = -190 ; i <= pas ; i ++)
    {
      	x = i / segment;
      	y = f(x);
      	j =  - segment*y;
      	if(gasit == false)
        {
      		point(200 + i, 200 + j);
          	gasit = true;
        }
      	else
          	if(abs(j1-j) < 100)
          		line(200+i1, 200+j1, 200+i, 200+j);
     	i1 = i, j1 = j;
    }
  	
  	//naresc abscisa curenta, pentru pasul urmator
  	pas ++;
  	if(pas > 190)
      pas = -190;
}