smooth() function not working

dawbakhos

Hello,

I've been programming on processing for some time, and I've noticed that whenever I watch tutorials online, the smooth() function does make an actual difference, whereas on mine my (mid-2014) MBP Retina (Nvidia GT 750M, 16GB) just doesn't.

Could anyone please help? Here's a couple of screenshots of an ellipse:

without smooth()

with smooth()

Any reason why this could be happening?

Thank you so much!

Regards!

Chrisir

smooth is on by default

you'll notice a different with noSmooth()

dawbakhos

Oh, really? Thank you! And what should I do if I wanna smooth the stroke of that ellipse? It's very rough and not so nice to the eye

Chrisir

try a higher grade of smooth

see reference

dawbakhos

Yes, I've done that too. If you draw an ellipse you get that same result as me?

GoToLoop

For the default renderer, and I believe for the FX2D too, max quality is 3 or 4: smooth(4);
https://Processing.org/reference/smooth_.html

koogs

is this the old 'alpha-buildup' problem?

https://forum.processing.org/two/discussion/8075/why-are-text-and-graphics-so-ugly-and-blocky

flowen

seems like the anti-alias problem of drawing alpha upon alpha. try noLoop() at the end of your draw() function or a background() at the beginning

FFD8

i just researched this the other day and found that on a retina you want to use a new pixelDensity() function:

size(800,600);
pixelDensity(displayDensity());
ellipse(width/2,height/2,400,400);

dawbakhos

i think i love you, FFD8

FFD8

haha glad i could help! +the reference page for smooth should be updated to suggest pixelDensity() as a related function...