Combining beginShape() with push/pop and translations

Programming Questions

geotheory

Combining beginShape() with push/pop and translations

in Programming Questions • 7 months ago

Does anyone know why the following code does not produce an octagon?

size(200, 200);
background(255);
fill(0);
translate(100, 100);
float ang = radians(360/8);
beginShape();
for (int i=0; i<8; i++) {
pushMatrix();
translate(50, 0);
vertex(0, 0);
ellipse(0,0,3,3); // where vertices should be
popMatrix();
rotate(ang);
}
endShape(CLOSE);

Replies(2)

Chrisir

Re: Combining beginShape() with push/pop and translations

7 months ago

Transformations such as translate(), rotate(), and scale() do not work within beginShape(). It is also not possible to use other shapes, such as ellipse() or rect() within beginShape().

http://processing.org/reference/beginShape_.html

geotheory

Re: Combining beginShape() with push/pop and translations

7 months ago

I didn't know about your first point, thanks.

On the second point, you might be interested to know that:

beginShape();
vertex(20,20);
ellipse(20,20,10,10);
vertex(50,20);
ellipse(50,20,10,10);
vertex(20,50);
ellipse(20,50,10,10);
endShape(CLOSE);

produces this :)

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