Release piecepackr v1.4.1 · piecepackr/piecepackr

New features

save_piece_obj, piece3d and piece now have support for 3D rotations of pieces (#188)
using an axis-angle representation parameterized by arguments angle, axis_x, and axis_y.
New functions AA_to_R and R_to_AA convert back and forth between the axis-angle representation
used by piecepackr and 3D rotation matrices (post-multiplied).
New functions R_x, R_y, and R_z create simple 3D rotation matrices (post-multiplied) for
rotations around the x, y, and z axes.
Newly exported geometry helper functions to_degrees and to_radians convert back and forth between degrees and radians.

pp_cfg now supports new obj_fn, rayrender_fn, and rgl_fn styles
allowing further piece customization within the 3D graphics functions
save_piece_obj, piece, and piece3d respectively (#200).
piece3d now supports user manually setting the piece's rgl "material" textype argument.
When textures with alpha transparency are not needed then setting textype
to "rgb" avoids a rglWebGL rendering bug (#187).
Utility function get_shape_grob_fn now has a back argument to indicate
we are drawing the back of the shape and should reflect it across a vertical axis (#218).
Some bug fixes and enhancements in the OBJ export for certain shapes (#207, #208, #215).