Sorry your browser is not supported!

I have a basic question about 3D. I have a tiny DarkGDK program in C++ that creates a small sphere and moves it back and forth across the screen (code below).

I notice that as the sphere approaches the left and right edges of the screen, it gets stretched length-wise, so it appears as an oval. My understanding is that this happens because of skewing inherent in the perspective view of the object. But I don't really understand because in real life a sphere does not start to look like an egg as I move it to the edge of my field of view.

In any case, I am trying to understand if there is a way to reduce or eliminate this stretching. I am hoping there is some camera setup/setting or perhaps some global rendering setting that can fix this. I understand that I could fix the problem using sprites, but my application really needs 3D.

Thanks for any help.

the code:

#include "DarkGDK.h"

void DarkGDK ( void )
{
dbSyncOn ( );
dbSyncRate ( 60 );

dbSetDir( "media" );

dbMakeObjectSphere( 1, (float)0.15, 20, 20 );
dbLoadImage( "media\\red.png", 1, 1 );
dbTextureObject( 1, 1 );
dbSetAmbientLight ( 80 ) ;
float d = 0.01f;

while ( LoopGDK ( ) )
{
if ( dbEscapeKey ( ) )
return;

if ( dbObjectPositionX( 1 ) > 1.5f )
d = -0.01f;
if ( dbObjectPositionX( 1 ) < -1.5f )
d = 0.01f;
dbPositionObject( 1, dbObjectPositionX( 1 ) + d, dbObjectPositionY( 1 ), dbObjectPositionZ( 1 ) );

dbSync ( );
}
}

After more reading, I realize a simpler way to say all this is: How can I do orthographic projection within the DarkGDK?

Look into the GetCameraInternalData command (or something of like that in the Camera file)