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Index › Programming Questions & Help › Programs › smooth() and draw()

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smooth() and draw() (Read 365 times)

pole

smooth() and draw()
Feb 11^th, 2009, 2:10pm

Hi!

i placed the same instruction in the function draw() and later in the setup() with smooth() always turned on. These are the outputs:

Code:

void setup() {
size(400,400);
background(0);
smooth();
noFill();
strokeCap(SQUARE);
stroke(#ff291c);
strokeWeight(50);
arc(200,200,200,200,(PI*5/8),(0));
}

void draw() {
}

produce this output:
http://pole.altervista.org/processing/img2.png

this code:

void setup() {
size(400,400);
background(0);
smooth();
noFill();
strokeCap(SQUARE);
}

void draw() {
stroke(#ff291c);
strokeWeight(50);
arc(200,200,200,200,(PI*5/8),(0));
}

produce this output:
http://pole.altervista.org/processing/img1.png

how can i resolve this problem and display the arc in perfect smooth (like the first code)?

Tnx

Pole

koogy

Re: smooth() and draw()
Reply #1 - Feb 11^th, 2009, 2:33pm

i moved more and more of the setup code into draw (thinking moving just the smooth would be enough). i ended up with

Code:


void setup() {
  size(400,400);
}
 
void draw() {
  background(0);
  smooth();
  noFill();
  strokeCap(SQUARE);
  stroke(#ff291c);
  strokeWeight(50);
  arc(200,200,200,200,(PI*5/8),(0));
}

which worked. but may have issues (do you want to clear the background every frame? is there a performance hit in doing this?)

curious.

pole YaBB Newbies Offline Posts: 2	Re: smooth() and draw() Reply #2 - Feb 11^th, 2009, 2:41pm Tnx! So the problem is background(0)! About your question: yes, i prefer to do less istruction per frame as possible. Thanks very much! Pole

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: smooth() and draw() Reply #3 - Feb 11^th, 2009, 4:23pm Lol! See antialiasing fonts... :-D

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