slow down sketch?

nnnoooaahhh

classic question, I know. How can I slow down this sketch? any other suggestions also much appreciated

//Thanks to Richard Carter, Dan Wilcox
//Mandala-like pattern generator
//Mouse click to pause the view

void setup() {
 size(666,666);

}

boolean TF=true;
float x;
float y;
int sens=1;

void draw() {
 background(255);
  for (int i=1; i<333;i+=31) {
    for (int j=1; j<333;j+=31) {
      noFill();
      strokeWeight(1.5);
      if (TF) {
        x= x + sin (millis() * 0.0014);
        y= y + sin (millis() * 0.0014);
      }
      ellipse(i*2+70,j*2+70,abs(sens*(x-250)),abs(sens*(y-250)));
      ellipse(i*2+70,j*2+70,abs(sens*(y-250)),abs(sens*(x-250)));
    }
  }
}

void mouseClicked() {
  TF=!TF;
}

GoToLoop

https://Processing.org/reference/frameRate_.html

quark

try changing the 0.0014 to 0.000014 in lines 22 & 23. This will slow it down by a factor of 100

You could use a variable instead, then vary the speed by changing the variable.

nnnoooaahhh

changing the "0.0014" to "0.000014" makes causes the image to expand endlessly and disappear...? and frameRate makes it seems so choppy, but maybe there is no other choice. thank you both

nnnoooaahhh

Additionally; any other suggestions for improving this thing?

quark

changing the "0.0014" to "0.000014" makes causes the image to expand endlessly and disappear...? and frameRate makes it seems so choppy, but maybe there is no other choice.

Reducing the framerate will make the animation more jerky - fact of life.

I was surprised at the other result because the 0.0014 is inside a sin function and continuous expansion shouldn't have happened. Now I have examined your code I realise it is the way you calculate the new x and y position based on their old positions.

I changed lines 22 and 23 to

x= 80 * sin (millis() * 0.005);
y= 80 * sin (millis() * 0.005);

and the animation is much pretier and smoother with the P2D renderer, change lie 6 to

size(666, 666, P2D);

You can now vary the speed by changing the value of 0.005

nnnoooaahhh

Excellent. Thank you very much. This helps me to understand millis() and the P2D makes a great different.

Chrisir

so, this is solved then.