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PocketMatrix • View topic - How to draw a 3D model using OpenGL
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How to draw a 3D model using OpenGL


How to draw a 3D model using OpenGL

Postby Slither2006 » Jan 25, 2008 @ 3:36am

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Postby edge » Jan 25, 2008 @ 10:22am

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Postby Slither2006 » Jan 25, 2008 @ 1:03pm

Hi Edge,

Thanks for your reply. Yes that worked perfectly. I love the performance it brings a whole new dimension to animation on a ppc device. Some of the things you can do with a surface on a small device are incredible.

Many Thanks!

Slither2006 :)
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Postby Slither2006 » Jan 26, 2008 @ 5:48am

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Postby edge » Jan 26, 2008 @ 2:49pm

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Postby Slither2006 » Jan 27, 2008 @ 3:28am

Hi Edge,

To clarify the issue I'm having I have included a copy of the View3D program provided in the Edgelib SDK except I have modified 3 things :

The World Scale
The Texture PNG file used
The World Translation


By doing this I have illustrated that the the texture is not a properly scaled as it would appear on a rotated surface texture mapped trapezium but to two clipped paralellograms that have been trimmed in half where the polygon sides meet to give the illusion of a trapiezium shape.

Normally this is fine from a distance or if the two polygons are coloured but it looks awful for textures with horizontal lines.

This issue occurs on both the OpenGL ES engine and the Edgelib engine.

Is there a E3DSurface function I should be calling or is this just a flaw. Could you please suggest a work around.

Regards,

Slither2006.
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MyView3D example of graphical issue
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Postby kuroneko » Jan 27, 2008 @ 7:27am

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Postby Slither2006 » Jan 27, 2008 @ 1:01pm

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Postby edge » Jan 27, 2008 @ 10:29pm

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Postby Slither2006 » Jan 28, 2008 @ 2:25am

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Postby Slither2006 » Jan 28, 2008 @ 4:05am

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Postby edge » Jan 28, 2008 @ 8:58am

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Making progress

Postby Slither2006 » Jan 28, 2008 @ 1:08pm

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Postby edge » Jan 28, 2008 @ 2:18pm

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Getting further

Postby Slither2006 » Jan 28, 2008 @ 11:48pm

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