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Re: Depth visibility with Object Graphics !!! [message #39462]

Mon, 24 May 2004 23:29

Antonio Santiago
Messages: 201
Registered: February 2004

Senior Member

Well, thanks for your help, but that's not really i mean (perhaps it is
due to my bad english, sorry).

I have a model inside which i put an IDLgrImage as a map of a portion of
Spain. Also i put an IDLgrPolyline to make seleccions (as a line) over
the map. My problem is that the line is never seen because i put the map
int the model after put the line, it is the map overlaps the line.

Bye and thaks.

Ben Tupper wrote:
> 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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