Circle not closing properly

Biophonism

Hello all. I'm trying to draw a circle with trigonometry, calling curveVertex() every 30 degrees in a for loop. The thing is, even though I include 360 in the for statement, the stroke doesn't close properly with endShape(). I don't want to use endShape(CLOSE), because it closes with a line instead of a curve, and the 30 degree step makes it look terrible. What am I doing wrong?

beginShape();
for(int i = 0; i <= 360; i += 30) {
   curveVertex(pos.x + sin(radians(i))*r, pos.y + cos(radians(i))*r);
}
endShape();

Biophonism

By the way, here's an image of what it looks like:

Chrisir

you could use ellipse...

Biophonism

I know I could use ellipse, but drawing it manually enables me to vary the radius of the circle adding some noise, etc

Chrisir

PVector pos = new PVector(300, 300);
float r = 40;

size (600, 600);

beginShape();
for (int i = 0; i <= 430; i += 30) {
  curveVertex(pos.x + sin(radians(i))*r, pos.y + cos(radians(i))*r);
}
endShape();

Chrisir

mine works with 430 as upper bound which is ridiculous

when you use 200 as upperbound, you'll see that he doesn't even start at south pos but a little more right

Biophonism

Oh, nice! That worked. Thank you very much!

Chrisir

well, it's a work around...

it's not an answer

maybe the radians or sin gives errors....

koogs

first and last points aren't part of the drawing.

from the reference:

"The first and last points in a series of curveVertex() lines will be used to guide the beginning and end of a the curve. A minimum of four points is required to draw a tiny curve between the second and third points. Adding a fifth point with curveVertex() will draw the curve between the second, third, and fourth points."

Chrisir

ah, well spotted

I somehow thought they would be vertex...