A "billboard" is a quad (rectangle) which is always rendered facing the camera, sometimes called a "sprite". There are numerous tutorials for doing this using OpenGL. soy.meshes.Billboard must render such a quad with optional axis-alignment set via boolean property.

A soy.meshes.Mesh class handles rendering by the orientation and position of the soy.bodies.* it belongs to, each mesh can potentially belong to many bodies.

As can be seen in the code ( http://svn.pysoy.org/trunk/pysoy/src/meshes/Mesh.pxi) the only OpenGL code needed to implement this is that specific to billboards; soy.bodies.Body has already transformed into the scene and the Billboard's .material property will handle color/texture/etc.

The source can be obtained through svn co http://svn.pysoy.org/trunk/pysoy

Completion:

Commit the work to http://svn.pysoy.org/, attach your diff(s) to this task, and contact the ghop-python mailing list.

Relevant webpages:

• http://nehe.gamedev.net/data/articles/article.asp?article=19

Task duration: please complete this task within 5 days (120 hours) of claiming it.

I claim this task

I think I have finished this issue. Here is diff for this issue. I cannot commit it into http://svn.pysoy.org/ because I don't have access

Looking good! Only thing it's lacking is a way to change size, perhaps a .size property and doing some trivial matrix math.

Already done

Confirmed, this task is complete. Very elegant solution and quickly implemented.

adding tag for student