ftp.nice.ch/pub/next/graphics/3d/Tree3D.3.1.NIHSA.bs.tar.gz#/Tree3D_3.1/Source/Branch.h

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// Branch.h -- major constituent of tree

#import <3Dkit/3Dkit.h>

id globalShader;

@interface Branch:N3DShape
{	id tree;
}
- addBranches :(int)levelsLeft inTree :tree;
- setBoundingBox :(float)xMin :(float)xMax :(float)yMin :(float)yMax 
												:(float)zMin :(float)zMax;
- renderSelf:(RtToken)context;
- tree :treeArg;

@end

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.