Processing 1.0 - Processing Discourse - strokeWeight() question

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Index › Programming Questions & Help › Programs › strokeWeight() question

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strokeWeight() question (Read 1424 times)

Ksalman

strokeWeight() question
Oct 14^th, 2009, 12:10pm

When I use strokeWeight() to set the width of the stroke it seems one of the things strokeWeight does it sets the border of my canvas to that stroke weight as well. Is there any way to increase the width of the stroke without also effecting the border?

I can't post live links (to show what I am talking about) till I have made 5 posts, it seems

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: strokeWeight() question Reply #1 - Oct 14^th, 2009, 1:45pm How are you doing your canvas? Usually, it is drawn with background(), which should have no border. Beside, you can set strokeWidth() several times, before each drawing call if needed (if must change).

Ksalman

Re: strokeWeight() question
Reply #2 - Oct 14^th, 2009, 2:07pm

I do use background but it has a border because of strokeWeight. Here is my code.

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

void draw() {
fill(0,10);
rectMode(CORNER);
rect(0,0,width,height);
strokeWeight(10);
stroke(255);
line(pmouseX,pmouseY,mouseX,mouseY);
}

I think I see what you are saying. So I added another strokeWeight before filling my canvas to fade to black like so

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

void draw() {
strokeWeight(0);
fill(0,10);
rectMode(CORNER);
rect(0,0,width,height);
strokeWeight(10);
stroke(255);
line(pmouseX,pmouseY,mouseX,mouseY);
}

thanks for the tip, I should've thought of using strokeWeight multiple times.

blindfish

Re: strokeWeight() question
Reply #3 - Oct 15^th, 2009, 1:21am

or better still:

Code:

void draw() {
 noStroke();
 fill(0,10);
 // the default is CORNER so no need for this unless you specifically use another mode elsewhere
 //rectMode(CORNER);
 rect(0,0,width,height);
 strokeWeight(10);
 stroke(255);
 line(pmouseX,pmouseY,mouseX,mouseY);
}

Where is the what if the what is in why?

PhiLho

Re: strokeWeight() question
Reply #4 - Oct 15^th, 2009, 2:45am

Ah, I was thinking more of:
Code:

void draw() {
 background(0,10);
 strokeWeight(10);
 stroke(255);
 line(pmouseX,pmouseY,mouseX,mouseY);
}

because that's the common idiom, but indeed it doesn't do the same effect...

Because "It is not possible to use transparency (alpha) in background colors with the main drawing surface"...

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