exporting very small circles turning into hexagons

Core Library Questions

akeetekt

exporting very small circles turning into hexagons

in Core Library Questions • 2 years ago

hi guys,

I'm currently working on a large project that requires me to zoom into a map, but i've run into the issue of when exporting circles 0.1 pt in radius they convert to hexagons in pdf. I'm reluctant to scale the whole script because it would mean rescaling a large quantity of csv files.

Is there a way to export the files as circles?

the image below is a rescaled ellipse of 0.1 pt radius.

import processing.pdf.*;
boolean record;
void setup(){
size(500,500, P3D);
smooth();
}
void draw(){
if (record) {
// Note that #### will be replaced with the frame number. Fancy!
beginRaw(PDF, "frame-####.pdf");
}
ellipse(width/2, height/2, 0.2, 0.2);
if (record) {
endRaw();
record = false;
}
}
void keyPressed(){
if (key == 's'| key=='S') {
record = true;
// saveFrame("combine15K-####.png");
}
}

Replies(2)

davbol

Re: exporting very small circles turning into hexagons

2 years ago

use beginRecord/endRecord instead of beginRaw/endRaw and you'll get a native ellipse (that scales up perfectly) written to the PDF instead of a triangulated n-gon (where "n" is based on screen resolution, for performance-versus-quality reasons, and your tiny ones only get n=6, and thus don't scale well above screen res)

akeetekt

Re: exporting very small circles turning into hexagons

2 years ago

thanks for the reply, this works for the quality we need at the moment

there seems to be an issue with the circles chamfering into squarish shapes. here is an example: the white circle is drawn in processing and the black in illustrator. This doesn't seem to be an illustrator problem because it does the same when importing into rhino.

also, what does this error mean?