mirror of
https://github.com/Mercury-Language/mercury.git
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9b6390b17e
extras/curs/curs.m:
extras/curs/curs.panel.m:
Make panel a separate submodule of curs, not a nested submodule.
extras/base64/base64.m:
extras/curses/mcurses.basics.m:
extras/curses/mcurses.m:
extras/curses/mcurses.misc.m:
extras/curses/mcurses.user.m:
extras/gator/evolve.m:
extras/gator/genotype.m:
extras/gator/phenotype.m:
extras/gator/tausworthe3.m:
extras/monte/dots.m:
extras/monte/geom.m:
extras/monte/hg.m:
extras/monte/monte.m:
extras/monte/rnd.m:
extras/moose/grammar.m:
extras/moose/moose.m:
extras/mopenssl/mopenssl.m:
extras/net/echo.m:
extras/net/errno.m:
extras/net/getaddrinfo.m:
extras/net/net.m:
extras/net/netdb.m:
extras/net/sockets.m:
extras/net/streams.m:
extras/net/tcp.m:
extras/net/test_lookups.m:
extras/net/types.m:
extras/odbc/odbc.m:
extras/odbc/odbc_test.m:
extras/references/README:
extras/references/reference.m:
extras/references/scoped_update.m:
extras/solver_types/library/any.m:
extras/solver_types/library/any_array.m:
extras/solver_types/library/any_assoc_list.m:
extras/solver_types/library/any_list.m:
extras/solver_types/library/any_map.m:
extras/solver_types/library/any_tree234.m:
extras/solver_types/library/any_util.m:
extras/trail/trail.m:
extras/trailed_update/samples/interpreter.m:
extras/trailed_update/samples/vqueens.m:
extras/trailed_update/tests/var_test.m:
extras/trailed_update/tr_array.m:
extras/trailed_update/tr_store.m:
extras/trailed_update/trailed_update.m:
extras/trailed_update/unsafe.m:
extras/trailed_update/var.m:
Bring programming style up to date.
133 lines
3.4 KiB
Mathematica
133 lines
3.4 KiB
Mathematica
%-----------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%-----------------------------------------------------------------------------%
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% Copyright (C) 2010 The University of Melbourne.
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% This file may only be copied under the terms of the GNU General
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% Public License - see the file COPYING in the Mercury distribution.
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%-----------------------------------------------------------------------------%
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:- module geom.
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:- interface.
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:- import_module float.
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:- type shape == pred(float, float, float).
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:- inst shape == (pred(in, in, in) is semidet).
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:- pred sphere(float::in, float::in, float::in) is semidet.
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:- pred cylinder(float::in, float::in, float::in) is semidet.
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:- pred cube(float::in, float::in, float::in) is semidet.
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:- pred cone(float::in, float::in, float::in) is semidet.
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:- pred torus(float::in, float::in, float::in, float::in) is semidet.
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:- pred planeX(float::in, float::in, float::in) is semidet.
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:- pred planeY(float::in, float::in, float::in) is semidet.
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:- pred planeZ(float::in, float::in, float::in) is semidet.
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:- pred union(shape::in(shape), shape::in(shape),
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float::in, float::in, float::in) is semidet.
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:- pred intersection(shape::in(shape), shape::in(shape),
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float::in, float::in, float::in) is semidet.
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:- pred difference(shape::in(shape), shape::in(shape),
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float::in, float::in, float::in) is semidet.
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:- pred translate(shape::in(shape), float::in, float::in, float::in,
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float::in, float::in, float::in) is semidet.
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:- pred scale(shape::in(shape), float::in, float::in, float::in,
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float::in, float::in, float::in) is semidet.
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:- pred rotateX(shape::in(shape), float::in,
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float::in, float::in, float::in) is semidet.
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:- pred rotateY(shape::in(shape), float::in,
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float::in, float::in, float::in) is semidet.
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:- pred rotateZ(shape::in(shape), float::in,
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float::in, float::in, float::in) is semidet.
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%-----------------------------------------------------------------------------%
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:- implementation.
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:- import_module math.
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%-----------------------------------------------------------------------------%
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sphere(X, Y, Z) :-
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sqr(X) + sqr(Y) + sqr(Z) =< 1.0.
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cylinder(X, Y, Z) :-
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sqr(X) + sqr(Y) =< 1.0,
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0.0 =< Z, Z =< 1.0.
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cube(X, Y, Z) :-
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0.0 =< X, X =< 1.0,
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0.0 =< Y, Y =< 1.0,
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0.0 =< Z, Z =< 1.0.
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cone(X, Y, Z) :-
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0.0 =< Z, Z =< 1.0,
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sqr(X) + sqr(Y) =< 1.0 - Z.
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torus(R, X, Y, Z) :-
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sqr(sqrt(sqr(X) + sqr(Z)) - 1.0) + sqr(Y) =< sqr(R).
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planeX(X, _, _) :-
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X >= 0.0.
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planeY(_, Y, _) :-
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Y >= 0.0.
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planeZ(_, _, Z) :-
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Z >= 0.0.
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union(A, B, X, Y, Z) :-
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(
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call(A, X, Y, Z)
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;
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call(B, X, Y, Z)
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).
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intersection(A, B, X, Y, Z) :-
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call(A, X, Y, Z),
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call(B, X, Y, Z).
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difference(A, B, X, Y, Z) :-
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call(A, X, Y, Z),
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not call(B, X, Y, Z).
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translate(Shape, Dx, Dy, Dz, X, Y, Z) :-
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call(Shape, X - Dx, Y - Dy, Z - Dz).
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scale(Shape, Sx, Sy, Sz, X, Y, Z) :-
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call(Shape, X / Sx, Y / Sy, Z / Sz).
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rotateX(Shape, Th, X, Y, Z) :-
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Sth = sin(-Th),
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Cth = cos(-Th),
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call(Shape, X, Cth * Y - Sth * Z, Sth * Y + Cth * Z).
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rotateY(Shape, Th, X, Y, Z) :-
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Sth = sin(-Th),
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Cth = cos(-Th),
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call(Shape, Cth * X + Sth * Z, Y, -Sth * X + Cth * Z).
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rotateZ(Shape, Th, X, Y, Z) :-
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Sth = sin(-Th),
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Cth = cos(-Th),
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call(Shape, Cth * X - Sth * Y, Sth * X + Sth * Y, Z).
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:- func sqr(float) = float.
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sqr(X) = X * X.
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