home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
EnigmA Amiga Run 1998 July
/
EnigmA AMIGA RUN 29 (1998)(G.R. Edizioni)(IT)[!][issue 1998-07 & 08].iso
/
recent
/
iib122.lha
/
IIB
/
Threads
/
camera_position
< prev
next >
Wrap
Internet Message Format
|
1998-04-13
|
2KB
Date: Wed, 8 Apr 1998 15:59:54 -0400
From: Pat Connelly <pconnelly@EMAIL.MSN.COM>
Subject: [IML] quest: camera positions
I thought I would make up a standard stage setup for rendering a scene from
multiple angles with standard camera placements as recently suggested on
this list. I picked 10 geometric positions. front, right, left, back,
right oblique front, left oblique front, right oblique back, left oblique
back, top and bottom. I copied and pasted 10 cameras. I changed only the
position coordinates and checked my frames. Everything showed correct
positioning and I aligned my camera to a track object. So far so good. I
stuck an object in the center and rendered the frames. All worked well but
top and bottom which were blank. After checking, I cannot see my object in
these two frames as well as when rendered. My camera lines show only a
single line piercing my object. The camera size is similar in all frames.
The location of the camera is 0,0,320 and 0,0, -320 for top and bottom.
Okay........ why? Can you put a camera on top and point straight down? I
will have to fool with it some more tomorrow to see if I am doing something
stupid but I believe the above is correct.
----------------------------------
Date: Thu, 9 Apr 1998 06:49:20 -0500
From: Gregory Denby <gdenby@TWAIN.HELIOS.ND.EDU>
I think I know what is happening, sort of...When you aim the camera at an object
the orientation of the camera defaults to the x axis horizontal. If you
circle the camera upwards, the alignment works fine till you reach the
zenith, at which point, the camera is rotated 180 degress on its y axis,
in order to preserve the initial x & z orientation. At just the moment of
rollover, it appears that the camera x & z sizes go to zero.
Its been awhile since I dealt with this. I believe that I manually
set the camera's y allignment in the action editor. However, I would
guess that setting the camer a unit or two from exact top and
bottom might do the trick.
----------------------------------
Date: Wed, 8 Apr 1998 23:41:06 +0400
From: Charles Blaquiere <blaq@INTERLOG.COM>
When tracking to an object, be careful when the target is straight above
or below the camera, especially when the "Keep X Horizontal" checkbox is
active. I suggest you nudge the camera +0.001 unit along world Y in the
two troublesome frames. The difference will be invisible, but it might
solve your problem.
----------------------------------