Doug is correct. This is a known problem with the default physical
width and height values. The default has been changed in Java 3D
1.2_beta1. In the mean time, you can work around this problem by
setting the physical width and height in your application to the
correct aspect ratio, using the Screen3D methods setPhysicalScreenWidth
and setPhysicalScreenHeight. Btw, the default values in Java 3D
1.2_beta1 use a physical resolution of 90dpi, or 0.0254/90.0
meters/pixel.
--
Kevin Rushforth
Graphics System Software
Sun Microsystems
[EMAIL PROTECTED]
>Date: Wed, 29 Dec 1999 11:09:32 -0800
>From: Doug Gehringer <[EMAIL PROTECTED]>
>Subject: Re: [JAVA3D] Model Aspect Ratio
>To: [EMAIL PROTECTED]
>
>> From: Dean Keeler <[EMAIL PROTECTED]>
>>
>> I have an application that creates a virtual world using a vrml file. I need
>> to run it on a system that uses a 2 monitor display. Using a 2 monitor
>> display I can set my display resolution to 2048 x 768. When I run my
>> application on this system, the model aspect ration when the view is rendered
>> is changed and causes the model to appear short and wide. When i run my
>> application on a single monitor display, the model uses the correct aspect
>> ratio and the model looks fine. Does the view somehow use the aspect ratio of
>> the display resolution? Can anyone help me with this or give me any ideas?
>
>
>I believe this is a known bug, fixed in J3D 1.2 beta.
>
>It may be possible to work around this problem by setting the physical screen
>size in Screen3D to match your "wide" monitor. You can either measure the
>actual size, or assume a 0.25mm / pixel size and set the
>
> width = 2048 pixels * 0.25 mm/pixel * 1m / 1000mm = 0.512m
> height = 768 pixels * 0.25 mm/pixel * 1m / 1000mm = 0.192m
>
>
>Doug Gehringer
>Sun Microsystems
>
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