On Tue, Jan 14, 2003 at 11:37:02AM +0100, Jose HG wrote:
> 
> 
> 
> 
> Hello,
> I need information about Balloon 3D, I would like to know where i can find 
> information about this; i want to know how i can define projection 
> ortogonal; 

>From your final question, I assume you're using Croquet.  Since Croquet
uses OpenGL, you set up an orthogonal projection just as you would in
OpenGL.  The projection is set up when a TCamera is initialized; look
at the method TCamera>>initFrustum.  You can make a subclass of TCamera
that overrides this method to set up the projection matrix however you
like.

> how can access to render engine and how i can say where it must 
> to draw:

You send messages to an instanced of GLX (usually named glx) just as
you would in an OpenGL program written in C.

Eg.

glx glBegin: GLTriangles.
glx glColor3f: 1 with: 0 with: 0.  "red"
glx glVertex3f: 1 with: 0 with: 0.
<etc>
glx glEnd.

> other question: how can i say to glx where have to draw?

Could you rephrase this question?

Thanks,
Joshua


> 
> thanks
> 
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