Hi
In case you're interested, normals are used for calculating lighting. A
shape without normals means that no lighting can be applied, so it appears
completely black.
B.D.
>From: Borja Marcos Su�rez <[EMAIL PROTECTED]>
>Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: [JAVA3D] the object disappear if i set a material.
>Date: Fri, 20 Jul 2001 15:25:01 +0200
>
>Thanks for your answer, Joachim Diepstraten
>
>I have found the error. Im sure that is a newbie error.
>When I saved the scene I wrote in my file all the vertex of the object, but
>no the normals.
>
>All I have done is write the Normal for each vertex, and in the loader
>class, load the normal for each vertex.
>Now it works.
>
>I dont understand well why happens this, but the important thing by the
>moment is that the program works. :)
>
>
>
>
>
>----- Original Message -----
>From: "Joachim Diepstraten" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Sent: Friday, July 20, 2001 9:35 AM
>Subject: Re: [JAVA3D] the object disappear if i set a material.
>
>
>| Hi Borja
>|
>| > I have written code for saving the scene to my own file format. In this
>file I save all the vertex and the material of the shape3d.
>| >
>| > When I load the scene if I set a material to the shape3d appearance,
>the object disappears. What is happening?
>| >
>| > I think all is working fine if I dont set the material and texture of
>the object, but I need loading that.
>| >
>| > Please help me because its urgent.
>| Hmm maybe you don't have any lights? Or turned off. Normaly Shapes nodes
>| when created with the default constructor come with a default appearance
>| which uses a material which has as emissive color 1.0f, 1.0f, 1.0f
>| appearing completly white. So if you don't have any
>| light source this shape will still appear.
>|
>| EOF,
>| J.D.
>|
>| --
>| Realtime Raytracer in JAVA
>| (http://www.antiflash.net/raytrace)
>|
>|
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