version: processing 1.0.9
sample code:
-----
void setup() {
size(300,300,P3D);
noStroke();
}
void draw() {
// ((PGraphics3D) g).cameraNear = -8; // work around for clipping bug
background(0);
lights();
translate(150, 150, -150); // translate to center
rotateY(frameCount * .01); // rotate around axis
translate(0, 0, 2000); // make sure the sphere passes behind the
camera
sphere(100);
}
-----
When the sphere passes behind the camera it is still projected onto the
viewplane (clipping problem) ...

This bug may have been introduced with revision 5707 of PGraphics3D.java
since the cameraNear hack has been commented out in line 1353:
// cameraNear = -8;

http://dev.processing.org/source/index.cgi/trunk/processing/core/src/processing/core/PGraphics3D.java?rev=5707&r1=5653&r2=5707

Clipping has never been implemented properly for P3D. But I'm scratching my
head because this has been a known issue since the very beginning of the
project, but I can't seem to find a proper reference to it in the bugs db
or in the known issues.. So I guess this will be it.

Though does setting cameraNear back to -8 fix the problem (or at least
improve things) for the time being? Maybe we'll just have to go back to the
hack.

never change a working hack ;-)

Of course not. ;)

But does changing things back work for you?

yes it does, I just checked against revision 0173 (linux build) - once I
uncomment line 1353 in PGraphics3D lthings magically work again...

K, thanks for checking. Switched over for the next release.

*** Bug 1449 has been marked as a duplicate of this bug. ***

*** Bug 1453 has been marked as a duplicate of this bug. ***

*** Bug 1550 has been marked as a duplicate of this bug. ***