Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!jhunix!johnh
From: johnh@jhunix.HCF.JHU.EDU (John J Humpal)
Newsgroups: comp.sys.amiga.graphics
Subject: Re: Imagine 3D Trace Problems
Message-ID: <8570@jhunix.HCF.JHU.EDU>
Date: 6 Jun 91 01:19:14 GMT
References: <1991Jun05.074155.11145@actrix.gen.nz>
Organization: The Johns Hopkins University - HCF
Lines: 20


In article <1991Jun05.074155.11145@actrix.gen.nz> Mark.Stuart@actrix.gen.nz (Mark Stuart) writes:
>I am currently tring to convince Imagine 3D to raytrace for me running
>on an A3000 with 6Mb of RAM, sometimes it does, other times it ignores
>objects. To be specific they do not appear if rendered in the traced
>mode, but do in scanline or lower rendering modes.

	You have run into the infamous world size problem.  What you
have to do is go to the Stage editor, ADD a "size" bar to the Globals
row, and enter large enough values in the x,y, & z dimensions in the
requester which pops up.  IMagine defaults to a 1024x1024x1024 world
size, so if any of your objects fall outside these limits (including
your camera), you will need to readjust world size. BTW, make the
world size as small as you possibly can to keep trace times down.

>I am sure it is a bug in the software

	Not so!  Just an Undocumented Feature... ;-)

John J. Humpal -- johnh@jhunix.hcf.jhu.edu -- short .sig, std. disclaimer