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jPCT-AE - a 3d engine for Android => Support => Topic started by: krausi on July 25, 2012, 03:41:45 pm

Title: Put an triangle on a sphere
Post by: krausi on July 25, 2012, 03:41:45 pm

Hallo,

at first i'm very new to JPCT-AE.
All in all i want to put a filled triangle on the surface of a sphere.

I have the sphere already. But how do i put a triangle on the surface?
Ive tried the addTriangle() method but it didnt works.
Maybe i created wrong SimpleVectors.

I would be very happy if somebody can help me.

PS: Please give a detailed answer because im very new to this topic.



thank you  :)

Title: Re: Put an triangle on a sphere
Post by: krausi on July 25, 2012, 03:44:04 pm

sry i put it to jpct :(

it belongs to the jpct-ae (android topic)

Title: Re: Put an triangle on a sphere
Post by: EgonOlsen on July 26, 2012, 07:17:14 am

I'm not quite sure what you are trying to do...you have a sphere (an Object3D..!?) and you want to create new Object3D that contains only one polygon? Or the sphere isn't an object at all? Or it's an object and you want to add a polygon... ???

Title: Re: Put an triangle on a sphere
Post by: krausi on July 26, 2012, 09:45:04 am

No i have the sphere already. (Object 3D Model load from asc file) The sphere works fine.

But now i want to put a triangle on the surface of the sphere.

Do you know what i mean? :-)

Title: Re: Put an triangle on a sphere
Post by: EgonOlsen on July 26, 2012, 10:26:13 pm

You want to create an Object3D that contains one triangle that is located on the sphere!?

Title: Re: Put an triangle on a sphere
Post by: krausi on July 27, 2012, 12:22:59 pm

yes

Title: Re: Put an triangle on a sphere
Post by: EgonOlsen on July 27, 2012, 12:41:32 pm

And if you try that, the result isn't visible? If so, try to call setCulling(false); and see if that helps. If it does, your vertex order in the object is wrong.