/usr/src/castle-game-engine-6.4/3d/ is in castle-game-engine-src 6.4+dfsg1-2.
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/usr/src/castle-game-engine-6.4/3d/castle3d.pas
/usr/src/castle-game-engine-6.4/3d/castleboxes.pas
/usr/src/castle-game-engine-6.4/3d/castlecameras.pas
/usr/src/castle-game-engine-6.4/3d/castlecubemaps.pas
/usr/src/castle-game-engine-6.4/3d/castlefrustum.pas
/usr/src/castle-game-engine-6.4/3d/castlegeometryarrays.pas
/usr/src/castle-game-engine-6.4/3d/castleinternaloctree.pas
/usr/src/castle-game-engine-6.4/3d/castlenoise_interpolatednoise2d_linear_cosine.inc
/usr/src/castle-game-engine-6.4/3d/castlenoise_interpolatednoise2d_spline.inc
/usr/src/castle-game-engine-6.4/3d/castlenurbs.pas
/usr/src/castle-game-engine-6.4/3d/castlequaternions.pas
/usr/src/castle-game-engine-6.4/3d/castlerays.pas
/usr/src/castle-game-engine-6.4/3d/castlesectors.pas
/usr/src/castle-game-engine-6.4/3d/castlespacefillingcurves.pas
/usr/src/castle-game-engine-6.4/3d/castlespheresampling.pas
/usr/src/castle-game-engine-6.4/3d/castlesphericalharmonics.pas
/usr/src/castle-game-engine-6.4/3d/castletransform.pas
/usr/src/castle-game-engine-6.4/3d/castletransform_collisions.inc
/usr/src/castle-game-engine-6.4/3d/castletransform_physics.inc
/usr/src/castle-game-engine-6.4/3d/castletriangles.pas
/usr/src/castle-game-engine-6.4/3d/castletriangles_istrianglespherecollision.inc
/usr/src/castle-game-engine-6.4/3d/castletriangulate.pas
/usr/src/castle-game-engine-6.4/3d/opengl/
/usr/src/castle-game-engine-6.4/3d/opengl/castleglboxes.pas
/usr/src/castle-game-engine-6.4/3d/opengl/castleglshadowvolumes.pas