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Re: Depth visibility with Object Graphics !!! [message #39476 is a reply to message #39462]

Mon, 24 May 2004 11:51

btt
Messages: 345
Registered: December 2000

Senior Member

Antonio Santiago wrote:
> Hi,
>
> i am working with Object Grpahics and i hace a problem :)
>
> I have put on a model two objects. Firts, i must put an IDLgrPolyline
> betwen two points (a line) that i can modify to select one trajectory.
> Second i put an IDLgrImage.
> My problem is that image is drawing over the polyline. I play with
> DEPTH_TEST_DISABLE and DEPT_TEST_FUNCTION, but always the image is
> drawing over the polyline.
>

>

Hi,

IDL renders images at Z=0 always. To get around this you have to map
the image as a texture map onto a polygon; then set the Z values for the
polygon to something 'further' away than your trajectory. There is an
example here...

http://tinyurl.com/3h5aw

Ben

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[Message index]

		Re: Depth visibility with Object Graphics !!! By: Antonio Santiago on Mon, 24 May 2004 23:29
		Re: Depth visibility with Object Graphics !!! By: btt on Mon, 24 May 2004 11:51
		Re: Depth visibility with Object Graphics !!! By: Rick Towler on Tue, 25 May 2004 10:54
		Re: Depth visibility with Object Graphics !!! By: btt on Tue, 25 May 2004 05:37

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