implemented lookat camera

[csgray] / src / csgimpl.h

diff --git a/src/csgimpl.h b/src/csgimpl.h
index 19cd43a..8b65783 100644 (file)
--- a/src/csgimpl.h
+++ b/src/csgimpl.h
@@ -63,7 +63,10 @@ union csg_object {
 struct camera {
        float x, y, z;
        float tx, ty, tz;
+       float ux, uy, uz;
        float fov;
+
+       float xform[16];
 };
 
 #endif /* CSGIMPL_H_ */