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% 3d.mp, poly.mp : changes % ---------------------------------------------------------------------------- % D. Roegel, 12/2/1997: tetrahedron animation % 17/2/1997: cleaning, introduction of local vectors % dodecahedron animation % 18/2/1997: correction of a bug in |set_point| % hidden faces implemented % 19/2/1997: icosahedron animation % 20/2/1997: cube and octahedron animation % code cleaned and simplified % |rotate_vect| made more general % rotation and translation of an object % addition of figures for the polyhedra % 21/2/1997: addition of figures explaining the computations % 23/2/1997: cleaning and corrections % 24/2/1997: additionnal figures % |rotate_vect| renamed in |vect_rotate| % |pnt| can now only be used locally. % several variables made private % computation of the bounding box of an animation % |beginview| and |endview| % |set_points| renamed |project_object| % |set_point| renamed |project_point| % parameters for PS translation and pnmcut % |mult_object| added % The standard convex polyhedra are now centered % and normalized. % Automatic generation of a shell script % 25/2/1997: |normalize_object| corrected to take into % account a set of points, and not all the points % of an object. % Introduction of |hexcolor|. % Code splitted in three files: 3d.mp, poly.mp % and driver. % Additional figures for the dodecahedron % 26/2/1997: list of object points removed and replaced % by the last number. % |errmessage| added % |vtmp| changed in |v_| % |write_script| slightly simplified % Code and documentation cleaned. % 27/2/1997: |write_script| made more general % new figure for the observer's orientation % Euler angles are now no longer mentioned. % Angle parameters added to |compute_reference| % |compute_perspective| added % |draw_point| added % |draw_axes| added % v 0.96 28/2/1997: sign of theta in |compute_perspective| changed % v 0.97 correction to |write_script| % addition of |pnt_obj| % addition of |def_object| % |rotate_object| renamed in |rotate_object_p_v| % addition of |rotate_object_p_p| % addition of |animate_two_objects| % generation of dodecahedron+icosahedron animation % v 0.972 3-4/3/1997: objects have now been elevated to classes; % poly.mp contains parameterized definitions % of classes of polyhedra. % Many macros have been adapted. It is now possible % to use several instances of the same class of % objects. % v 0.973 5/3/1997: faces are now declared in arrays, which makes % their manipulation easier. Also, color arrays. % Introduction of |set_face| and |draw_faces| % v 0.974 10/3/1997: faces and color arrays have been extended to keep % the informations of all faces of all objects % v 0.975 11/3/1997: various simplifications, addition of |obj_name| % computing an object name from an index. % Addition of |obs_distance| % |draw_...| functions removed in poly.mp % v 0.976 12/3/1997: an example with three objects % v 0.977 14/3/1997: ppmquant, pnmcut and ppmtogif replaced by mogrify % v 0.978 17/3/1997: |reset_object|, |put_object|, % and |rotate_object_abs_p_v| introduced % |def_object| merged in |assign_object| % drawing of points separated in the polyhedra, % in order to be able to reset the positions. % v 0.979 20/3/1997: overflow handling added, % introduction of field of view parameters (|h_field| and % |v_field|) % v 0.98 21/3/1997: new figure and some slight corrections % v 0.981 25/4/1997: when |filled_faces| is false, hidden edges are % drawn dashed. % v 0.982 25/4/1997: |drawhidden| parameter added to |draw_face| % v 0.983 28/4/1997: |set_face| uses now local points % |set_obj_point| for local points % |rotate_in_plane| uses now local points % |get_next_face_point| renamed in |next_face_point| % |next_face_point| uses now local points % |pnt| and |face| removed from poly.mp % |set_face| renamed |set_obj_face| to be consistent % with |set_obj_point| % v 0.984 1/5/1997: |rotate_object_abs_p_v| renamed |rotate_object_abs_pv| % |rotate_object_p_v| renamed |rotate_object_pv| % (reason: avoid overfull hboxes in paper) % All |_inst| macros removed since they were not % necessary. % |next_face_point| renamed in |new_face_point| % v 0.985 2/5/1997: |three_d_loaded| renamed |three_d_version| % and holds the version number. % v 0.986 2/5/1997: code cleaned. % v 0.987 12/5/1997: various small improvements suggested by Ulrik Vieth % v 0.988 13/5/1997: introduction of 10 ancillary points in the dodecahedron % only 21 points are now available (20 vertices + center) % |free_point| introduced, as well as variants % of |new_face_point| and |rotate_in_plane| to cope % with the ancillary points. % v 0.989 16/5/1997: |new_tmp_points|, |free_tmp_points| % |new_face_point_abs| renamed into |new_abs_face_point| % |rotate_in_plane| removed % |rotate_in_plane_abs| renamed into |rotate_in_plane| % paper.tex brought up to date. % v 0.990 17/5/1997: |new_points| renamed |new_obj_points| % |new_faces| renamed |new_obj_faces| % |new_tmp_points| renamed |new_points| % |free_tmp_points| renamed |free_points| % paper.tex brought up to date. % v 0.991 18/5/1997: the following changes were done to for formatting % reasons in the TUGboat paper. % |middle_point| renamed |mid_point| % |rotate_object...| renamed |rotate_obj...| % |assign_object| renamed |assign_obj| % |reset_object| renamed |reset_obj| % |put_object| renamed |put_obj| % |scale_object| renamed |scale_obj| % |translate_object| renamed |translate_obj| % syntax of |obs_distance| changed to take a first % `text' parameter. % v 0.992 23/5/1997: some cosmetic changes by Ulrik Vieth, % for better formatting with mft. % |def_object| renamed |def_obj|. % Code formatted with the meta-mode.el emacs package. % % v 0.993 29/5/1997: several "object" renamed "obj"; corrected in the paper. % slight changes in the paper. % v 0.994 30/10/1997: |draw_contours| added after suggestion by Denis Barbier % v 1.0 8/ 4/1998: final spit for TUGboat article % ----------------------------------------------------------------------------
