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Re: Strange behaviour of IDLgrPolygon [message #92233 is a reply to message #92232]

Tue, 03 November 2015 16:27

Jim Pendleton
Messages: 165
Registered: November 2011

Senior Member

On Tuesday, November 3, 2015 at 2:16:19 PM UTC-7, nata wrote:
> Hi guys,
>
>
> Why in the following example the polygon only appears while we are clicking a mouse?
>
> ;; ------------------------------------------------------------ ----------
> model = obj_new('IDLgrModel')
>
> f = filepath('people.jpg', subdir=['examples', 'data'])
> ali = read_image(f)
> texture = obj_new('IDLgrImage', ali)
>
> tcoords = [[0.0, 1.0], [0.0, 0.0], [1.0, 0.0], [1.0, 1.0]]
> polygon = obj_new('IDLgrPolygon', tcoords, polygons=[4, 0, 1, 2, 3], $
> color=[255, 255, 255], $
> texture_map=texture, texture_interp=1, $
> texture_coord=tcoords)
>
> model->add, polygon
>
> xobjview, model
> ;; ------------------------------------------------------------ ----------
>
> I don't see the logic...
> Thank you in advance for you help,
>
> nata

IDL 8.5 on Window 7-64 properly displays this properly, using hardware rendering.

If you switch to software rendering and the image then displays correctly, the implication is that you may need an updated driver for your graphics card.

Jim P.

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		Strange behaviour of IDLgrPolygon By: natha on Tue, 03 November 2015 13:16
		Re: Strange behaviour of IDLgrPolygon By: Jim Pendleton on Tue, 03 November 2015 16:27

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