source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include <math.h>
-#include <libc-extension.hh>
+#include <libc-extension.hh> // isinf
-#include "font-metric.hh"
+#include "font-metric.hh"
#include "dimensions.hh"
#include "interval.hh"
#include "string.hh"
#include "molecule.hh"
#include "debug.hh"
-#include "killing-cons.tcc"
+
+
+#include "ly-smobs.icc"
+
+
+SCM
+Molecule::smobbed_copy () const
+{
+ Molecule * m = new Molecule (*this);
+
+ return m->smobbed_self ();
+}
Interval
-Molecule::extent(Axis a) const
+Molecule::extent (Axis a) const
{
return dim_[a];
}
dim_ = b;
}
-Molecule::Molecule()
+Molecule::Molecule ()
{
expr_ = SCM_EOL;
set_empty (true);
Axis a = X_AXIS;
while (a < NO_AXES)
{
- if (abs(o[a]) > 30 CM
+ if (abs (o[a]) > 30 CM
|| isinf (o[a]) || isnan (o[a]))
{
programming_error ("Improbable offset for translation: setting to zero");
incr (a);
}
- expr_ = gh_list (ly_symbol2scm ("translate-molecule"),
+ expr_ = scm_list_n (ly_symbol2scm ("translate-molecule"),
ly_offset2scm (o),
expr_, SCM_UNDEFINED);
if (!empty_b ())
void
Molecule::translate_axis (Real x,Axis a)
{
- Offset o(0,0);
+ Offset o (0,0);
o[a] = x;
translate (o);
}
void
Molecule::add_molecule (Molecule const &m)
{
- expr_ = gh_list (ly_symbol2scm ("combine-molecule"),
+ expr_ = scm_list_n (ly_symbol2scm ("combine-molecule"),
m.expr_,
expr_, SCM_UNDEFINED);
dim_.unite (m.dim_);
}
else
{
- dim_[X_AXIS] = Interval(0,0);
+ dim_[X_AXIS] = Interval (0,0);
dim_[Y_AXIS] = Interval (0,0);
}
}
Molecule::align_to (Axis a, Direction d)
{
Interval i (extent (a));
- Real r = (d == CENTER) ? i.center () : i[d];
+ Real r = (d == CENTER) ? i.center () : i[d];
translate_axis (-r, a);
}
{
Real my_extent= empty_b () ? 0.0 : dim_[a][d];
Interval i (m.extent (a));
+ Real his_extent;
if (i.empty_b ())
- programming_error ("Molecule::add_at_edge: adding empty molecule.");
-
- Real his_extent = i[-d];
+ {
+ programming_error ("Molecule::add_at_edge: adding empty molecule.");
+ his_extent = 0.0;
+ }
+ else
+ his_extent = i[-d];
+
Real offset = my_extent - his_extent;
Molecule toadd (m);
toadd.translate_axis (offset + d * padding, a);
add_molecule (toadd);
}
-bool
-Molecule::empty_b () const
+/* ly_? Thought we had the ly_ prefix for wrapping/adding to gh_ */
+SCM
+Molecule::ly_set_molecule_extent_x (SCM mol, SCM axis, SCM np)
{
- return expr_ == SCM_EOL;
+ Molecule* m = unsmob_molecule (mol);
+ SCM_ASSERT_TYPE (m, mol, SCM_ARG1, __FUNCTION__, "molecule");
+ SCM_ASSERT_TYPE (ly_axis_p(axis), axis, SCM_ARG2, __FUNCTION__, "axis");
+ SCM_ASSERT_TYPE (ly_number_pair_p (np), np, SCM_ARG3, __FUNCTION__, "number pair");
+
+ Interval iv = ly_scm2interval (np);
+ m->dim_[Axis (gh_scm2int (axis))] = iv;
+
+ return SCM_UNDEFINED;
}
SCM
-fontify_atom(Font_metric * met, SCM f)
+Molecule::ly_get_molecule_extent (SCM mol, SCM axis)
{
- return gh_list (ly_symbol2scm ("fontify"),
- ly_quote_scm (met->description ()), f, SCM_UNDEFINED);
+ Molecule *m = unsmob_molecule (mol);
+ SCM_ASSERT_TYPE (m, mol, SCM_ARG1, __FUNCTION__, "molecule");
+ SCM_ASSERT_TYPE (ly_axis_p(axis), axis, SCM_ARG2, __FUNCTION__, "axis");
+
+ return ly_interval2scm (m->extent (Axis (gh_scm2int (axis))));
}
+
SCM
-Molecule::get_expr () const
+Molecule::ly_molecule_combined_at_edge (SCM first, SCM axis, SCM direction,
+ SCM second, SCM padding)
+
{
- return expr_;
+ Molecule * m1 = unsmob_molecule (first);
+ Molecule * m2 = unsmob_molecule (second);
+ Molecule result;
+
+
+ SCM_ASSERT_TYPE(ly_axis_p(axis), axis, SCM_ARG2, __FUNCTION__, "axis");
+ SCM_ASSERT_TYPE(ly_dir_p (direction), direction, SCM_ARG3, __FUNCTION__, "dir");
+ SCM_ASSERT_TYPE(gh_number_p(padding), padding, SCM_ARG4, __FUNCTION__, "number");
+
+ if (m1)
+ result = *m1;
+ if (m2)
+ result.add_at_edge (Axis (gh_scm2int (axis)), Direction (gh_scm2int (direction)),
+ *m2, gh_scm2double (padding));
+
+ return result.smobbed_copy ();
+}
+
+
+SCM
+make_molecule (SCM expr, SCM xext, SCM yext)
+{
+ /*
+ TODO: typechecking.
+ */
+ Box b (ly_scm2interval (xext), ly_scm2interval(yext));
+ Molecule m (b, expr);
+ return m.smobbed_copy ();
}
-Molecule
-create_molecule (SCM scm_mol)
+SCM
+fontify_atom (Font_metric * met, SCM f)
{
- if (!gh_pair_p (scm_mol))
- return Molecule ();
+ if (f == SCM_EOL)
+ return f;
+ else
+ return scm_list_n (ly_symbol2scm ("fontify"),
+ ly_quote_scm (met->description_), f, SCM_UNDEFINED);
+}
- SCM exp = gh_car (scm_mol);
- scm_mol = gh_cdr (scm_mol);
- Box b ;
- if (gh_pair_p (scm_mol))
- {
- Interval i1 = ly_scm2interval (gh_car (scm_mol));
- Interval i2 = ly_scm2interval (gh_cdr (scm_mol));
- b = Box (i1,i2);
- }
- return Molecule (b, exp);
+SCM
+ly_fontify_atom (SCM met, SCM f)
+{
+ SCM_ASSERT_TYPE(unsmob_metrics (met), met, SCM_ARG1, __FUNCTION__, "font metric");
+
+ return fontify_atom (unsmob_metrics (met), f);
}
SCM
-Molecule::create_scheme () const
+ly_align_to_x (SCM mol, SCM axis, SCM dir)
+{
+ SCM_ASSERT_TYPE(unsmob_molecule (mol), mol, SCM_ARG1, __FUNCTION__, "molecule");
+ SCM_ASSERT_TYPE(ly_axis_p(axis), axis, SCM_ARG2, __FUNCTION__, "axis");
+ SCM_ASSERT_TYPE(ly_dir_p (dir), dir, SCM_ARG3, __FUNCTION__, "dir");
+
+ unsmob_molecule (mol)->align_to ((Axis)gh_scm2int (axis), Direction (gh_scm2int (dir)));
+
+ return SCM_UNDEFINED;
+}
+
+
+static void
+molecule_init ()
{
- return gh_cons (expr_,
- gh_cons (ly_interval2scm (dim_[X_AXIS]),
- ly_interval2scm (dim_[Y_AXIS])));
+ scm_c_define_gsubr ("ly-make-molecule", 3, 0, 0, (Scheme_function_unknown) make_molecule);
+ scm_c_define_gsubr ("ly-fontify-atom", 2, 0, 0, (Scheme_function_unknown) ly_fontify_atom);
+ scm_c_define_gsubr ("ly-align-to!", 3, 0, 0, (Scheme_function_unknown) ly_align_to_x);
+ scm_c_define_gsubr ("ly-combine-molecule-at-edge", 5 , 0, 0, (Scheme_function_unknown) Molecule::ly_molecule_combined_at_edge);
+ scm_c_define_gsubr ("ly-set-molecule-extent!", 3 , 0, 0, (Scheme_function_unknown) Molecule::ly_set_molecule_extent_x);
+ scm_c_define_gsubr ("ly-get-molecule-extent", 2 , 0, 0, (Scheme_function_unknown) Molecule::ly_get_molecule_extent);
}
+ADD_SCM_INIT_FUNC (molecule,molecule_init);
+
+
+bool
+Molecule::empty_b () const
+{
+ return expr_ == SCM_EOL;
+}
+
+SCM
+Molecule::get_expr () const
+{
+ return expr_;
+}
+
+
Box
Molecule::extent_box () const
{
return dim_;
}
+IMPLEMENT_SIMPLE_SMOBS (Molecule);
+
+
+int
+Molecule::print_smob (SCM s, SCM port, scm_print_state *)
+{
+
+ scm_puts ("#<Molecule ", port);
+#if 0
+ Molecule *r = (Molecule *) ly_cdr (s);
+ String str (r->str ());
+ scm_puts ((char *)str.ch_C (), port);
+#endif
+ scm_puts (" >", port);
+
+ return 1;
+}
+
+
+SCM
+Molecule::mark_smob (SCM s)
+{
+ Molecule *r = (Molecule *) ly_cdr (s);
+
+ return r->expr_;
+}
+
+IMPLEMENT_TYPE_P (Molecule, "molecule?");
+IMPLEMENT_DEFAULT_EQUAL_P (Molecule);
+
projects / lilypond.git / blobdiff