+++ /dev/null
-/*
- slur-bezier-bow.cc -- implement Slur_bezier_bow
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
-*/
-
-#include "warn.hh"
-#include "output-def.hh"
-#include "slur-bezier-bow.hh"
-
-Slur_bezier_bow::Slur_bezier_bow (Array<Offset> encompass, Direction dir,
- Real h_inf, Real r_0)
-{
- h_inf_ = h_inf;
- r_0_ = r_0;
- alpha_ = 0;
- dir_ = dir;
- encompass_ = encompass;
- to_canonical_form ();
-
- Real w = encompass_.top ()[X_AXIS] - encompass_[0][X_AXIS];
- curve_ = slur_shape (w, h_inf, r_0);
-}
-
-Bezier
-Slur_bezier_bow::get_bezier () const
-{
- Bezier rv = curve_;
- if (dir_ == DOWN)
- {
- rv.scale (1, -1);
- }
-
- rv.rotate (alpha_);
- rv.translate (origin_);
-
- return rv;
-}
-
-void
-Slur_bezier_bow::to_canonical_form ()
-{
- origin_ = encompass_[0];
- translate (&encompass_, -origin_);
-
- Offset delta = encompass_.top () - encompass_[0];
- alpha_ = delta.arg ();
-
- rotate (&encompass_, -alpha_);
- if (dir_ == DOWN)
- {
- scale (&encompass_, 1, -1);
- }
-
- while (encompass_.size () > 1 && encompass_[1][X_AXIS] <= 0.0)
- {
- programming_error ("Degenerate bow: infinite steepness reqd");
- encompass_.del (1);
- }
-
- Real l = encompass_.top ()[X_AXIS];
- while (encompass_.size () > 1 && encompass_.top (1)[X_AXIS] >= l)
- {
- programming_error ("Degenerate bow: infinite steepness reqd");
- encompass_.del (encompass_.size ()-2);
- }
-}
-
-
-
-void
-Slur_bezier_bow::blow_fit ()
-{
- Real len = curve_.control_[3][X_AXIS];
- Real h = curve_.control_[1][Y_AXIS] * fit_factor () / len;
- curve_.control_[1][Y_AXIS] = h * len;
- curve_.control_[2][Y_AXIS] = h * len;
- curve_.assert_sanity ();
-}
-
-
-Real
-Slur_bezier_bow::get_enclosed_area () const
-{
- Real a = 0;
- for (int i=0; i < encompass_.size (); i++)
- {
- Interval x;
- Interval y;
- if (i == 0)
- {
- x = Interval (0, encompass_[1][X_AXIS] / 2);
- y = Interval (0,
- curve_.get_other_coordinate (X_AXIS,
- encompass_[1][X_AXIS]
- / 2));
- }
- else if (i == encompass_.size () - 1)
- {
- x = Interval ((encompass_[i-1][X_AXIS] + encompass_[i][X_AXIS])/2,
- encompass_[i][X_AXIS]);
- y = Interval (0,
- (curve_.get_other_coordinate (X_AXIS,
- (x[MIN] + x[MAX]) / 2)));
- }
- else
- {
- x = Interval ((encompass_[i-1][X_AXIS] + encompass_[i][X_AXIS]) / 2,
- (encompass_[i][X_AXIS] + encompass_[i+1][X_AXIS]) / 2);
- y = Interval (encompass_[i][Y_AXIS],
- (curve_.get_other_coordinate (X_AXIS, x[MIN])
- + curve_.get_other_coordinate (X_AXIS,
- (x[MIN] + x[MAX]) / 2)
- + curve_.get_other_coordinate (X_AXIS, x[MAX])) / 3);
- }
-
- Real da = x.length () * y.length ();
- a += da;
- }
- return a;
-}
-
-Array<Real>
-Slur_bezier_bow::area_x_gradientses (Real area)
-{
- Real len = curve_.control_[3][X_AXIS];
- Real grow = len / 10.0;
- Array<Real> da (2);
- for (int i=0; i < 2; i++)
- {
- Real r = curve_.control_[i+1][X_AXIS];
- curve_.control_[i+1][X_AXIS] += grow;
- da[i] = (get_enclosed_area () - area) / grow;
- curve_.control_[i+1][X_AXIS] = r;
- }
- return da;
-}
-
-/*
- ugh, should have another look, and use a regular optimization
- algorithm, instead of this homebrew.
-*/
-void
-Slur_bezier_bow::minimise_enclosed_area (Real beauty,
- SCM bezier_props)
-{
- Real length = curve_.control_[3][X_AXIS];
- Real beautiful = beauty * length * slur_height (length, h_inf_, r_0_);
-
-
- if (fit_factor () > 1.0)
- blow_fit ();
-
- Real pct_c0 = ly_scm2double (ly_cdr (scm_assoc (ly_symbol2scm ("bezier-pct-c0"), bezier_props)));
- Real pct_c3 = ly_scm2double (ly_cdr (scm_assoc (ly_symbol2scm ("bezier-pct-c3"), bezier_props)));
- Real pct_in_max = ly_scm2double (ly_cdr (scm_assoc (ly_symbol2scm ("bezier-pct-in-max"), bezier_props)));
- Real pct_out_max = ly_scm2double (ly_cdr (scm_assoc (ly_symbol2scm ("bezier-pct-out-max"), bezier_props)));
- Real steps = ly_scm2double (ly_cdr (scm_assoc (ly_symbol2scm ("bezier-area-steps"),bezier_props)));
-
- for (int i=0; i < steps; i++)
- {
- Real area = get_enclosed_area ();
- if (area <= beautiful)
- break;
-
- Array<Real> da = area_x_gradientses (area);
-
- // urg
- Real pct = pct_c0 + pct_c3 * length * length * length;
- pct *= (steps - i) / steps;
- if (da[0] > 0 || da[1] < 0)
- pct = pct <? pct_out_max;
- else
- pct = pct <? pct_in_max;
-
- Real u = (abs (curve_.control_[1][X_AXIS] / da[0])
- <? abs ((curve_.control_[3][X_AXIS]
- - curve_.control_[2][X_AXIS]) / da[1]));
-
- curve_.control_[1][X_AXIS] -= da[0] * u * pct;
- curve_.control_[2][X_AXIS] -= da[1] * u * pct;
- }
-}
-
-
-
-/*
- max (encompass.y / curve.y)
-
- */
-Real
-Slur_bezier_bow::fit_factor () const
-{
- Real x1 = encompass_[0][X_AXIS];
- Real x2 = encompass_.top ()[X_AXIS];
-
- Real factor = 0.0;
- for (int i=1; i < encompass_.size ()-1; i++)
- {
- if (encompass_[i][X_AXIS] > x1 && encompass_[i][X_AXIS] < x2)
- {
- Real y = curve_.get_other_coordinate (X_AXIS, encompass_[i][X_AXIS]);
- if (y>0)
- {
- Real f = encompass_[i][Y_AXIS] / y;
- factor = factor >? f;
- }
- }
- }
-
-
- return factor;
-}
-
-
-
-
+++ /dev/null
-/*
- slur.cc -- implement Old_slur
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- Jan Nieuwenhuizen <janneke@gnu.org>
-*/
-
-/*
- [TODO]
-
- * should avoid stafflines with horizontal part.
-
- * begin and end should be treated as a/acknowledge Scripts.
-
- * smart changing of endings
-
- * smart changing of (Y-?)offsets to avoid ugly beziers
- (along-side-stem)
-
- */
-
-#include "directional-element-interface.hh"
-#include "group-interface.hh"
-#include "slur.hh"
-#include "lookup.hh"
-#include "output-def.hh"
-#include "note-column.hh"
-#include "stem.hh"
-#include "paper-column.hh"
-#include "stencil.hh"
-#include "warn.hh"
-#include "slur-bezier-bow.hh"
-#include "main.hh"
-#include "group-interface.hh"
-#include "staff-symbol-referencer.hh"
-#include "spanner.hh"
-
-
-void
-Old_slur::set_interface (Grob*me)
-{
- /* Copy to mutable list. */
- me->set_property ("attachment",
- ly_deep_copy (me->get_property ("attachment")));
-}
-
-void
-Old_slur::add_column (Grob*me, Grob*n)
-{
- Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-columns"), n);
- me->add_dependency (n);
-
- add_bound_item (dynamic_cast<Spanner*> (me), dynamic_cast<Item*> (n));
-}
-
-void
-Old_slur::de_uglify (Grob*me, Slur_bezier_bow* bb, Real default_height)
-{
- Real length = bb->curve_.control_[3][X_AXIS] ;
- Real ff = bb->fit_factor ();
- for (int i = 1; i < 3; i++)
- {
- Real ind = abs (bb->curve_.control_[ (i-1)*3][X_AXIS]
- - bb->curve_.control_[i][X_AXIS]) / length;
- Real h = bb->curve_.control_[i][Y_AXIS] * ff / length;
-
- Real f = default_height / length;
- SCM up = me->get_property ("de-uglify-parameters");
-
- Real c1 = ly_scm2double (ly_car (up));
- Real c2 = ly_scm2double (ly_cadr (up));
- Real c3 = ly_scm2double (ly_caddr (up));
-
- if (h > c1 * f)
- {
- h = c1 * f;
- }
- else if (h > c2 + c3 * ind)
- {
- h = c2 + c3 * ind;
- }
-
- bb->curve_.control_[i][Y_AXIS] = h * length;
- }
-
- bb->curve_.assert_sanity ();
-}
-
-
-
-Direction
-Old_slur::get_default_dir (Grob*me)
-{
- Link_array<Grob> encompasses =
- Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-columns");
-
- Direction d = DOWN;
- for (int i=0; i < encompasses.size (); i ++)
- {
- if (Note_column::dir (encompasses[i]) < 0)
- {
- d = UP;
- break;
- }
- }
- return d;
-}
-
-
-MAKE_SCHEME_CALLBACK (Old_slur, after_line_breaking,1);
-SCM
-Old_slur::after_line_breaking (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- if (!scm_ilength (me->get_property ("note-columns")))
- {
- me->suicide ();
- return SCM_UNSPECIFIED;
- }
- set_extremities (me);
- if (!ly_c_pair_p (me->get_property ("control-points")))
- set_control_points (me);
- return SCM_UNSPECIFIED;
-}
-
-
-void
-Old_slur::check_slope (Grob *me)
-{
- /*
- Avoid too steep slurs.
- */
- SCM s = me->get_property ("slope-limit");
- if (ly_c_number_p (s))
- {
- Array<Offset> encompass = get_encompass_offsets (me);
- Drul_array<Offset> attachment;
- attachment[LEFT] = encompass[0];
- attachment[RIGHT] = encompass.top ();
-
- Real dx = attachment[RIGHT][X_AXIS] - attachment[LEFT][X_AXIS];
- Real dy = attachment[RIGHT][Y_AXIS] - attachment[LEFT][Y_AXIS];
- if (!dx)
- return;
-
- Real slope = slope = abs (dy / dx);
-
- Real limit = ly_scm2double (s);
-
- if (slope > limit)
- {
- Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
- Direction dir = (Direction)ly_scm2int (me->get_property ("direction"));
- Direction d = (Direction) (- dir * (sign (dy)));
- SCM a = me->get_property ("attachment-offset");
- Drul_array<Offset> o;
- o[LEFT] = ly_scm2offset (index_get_cell (a, LEFT));
- o[RIGHT] = ly_scm2offset (index_get_cell (a, RIGHT));
- o[d][Y_AXIS] -= (limit - slope) * dx * dir / staff_space;
-
- o[d][Y_AXIS] *= get_grob_direction (me);
-
- me->set_property ("attachment-offset",
- scm_cons (ly_offset2scm (o[LEFT]),
- ly_offset2scm (o[RIGHT])));
- }
- }
-
-}
-
-/*
- Set 'attachment grob property, and return it.
-*/
-SCM
-Old_slur::set_extremities (Grob *me)
-{
- if (!get_grob_direction (me))
- set_grob_direction (me, get_default_dir (me));
-
- SCM att = me->get_property ("attachment");
- /*
- */
- if (!ly_c_pair_p (att))
- {
- programming_error ("attachment is not a cons?!");
- att = scm_cons (SCM_EOL, SCM_EOL);
- me->set_property ("attachment", att);
- }
-
- Direction dir = LEFT;
- do
- {
-
- if (!ly_c_symbol_p (index_get_cell (att, dir)))
- {
- SCM p = me->get_property ("extremity-function");
- SCM res = ly_symbol2scm ("head");
-
- if (ly_c_procedure_p (p))
- res = scm_call_2 (p, me->self_scm (), scm_int2num (dir));
-
- if (ly_c_symbol_p (res))
- index_set_cell (att, dir, res);
- }
- }
- while (flip (&dir) != LEFT);
-
- check_slope (me);
-
- return att;
-}
-
-
-Real
-Old_slur::get_boundary_notecolumn_y (Grob *me, Direction dir)
-{
- SCM cols = me->get_property ("note-columns");
-
- if (!ly_c_pair_p (cols))
- {
- programming_error ("No note-columns in slur?");
- me->suicide ();
- return 0.0;
- }
-
- if (dir == LEFT)
- cols = scm_reverse (cols);
-
- Grob *col = unsmob_grob (ly_car (cols));
- Grob *common[] =
- {
- 0,
- me->common_refpoint (col, Y_AXIS)
- };
- Real y;
- if (col == ((Spanner*)me)->get_bound (dir))
- {
- y = get_attachment (me, dir, common)[Y_AXIS];
- }
- else
- {
- y = encompass_offset (me, col, common)[Y_AXIS]
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
- return y;
-}
-
-Offset
-Old_slur::broken_trend_offset (Grob *me, Direction dir)
-{
- /*
- A broken slur should maintain the same vertical trend
- the unbroken slur would have had.
- */
- Offset o;
- if (Spanner *mother = dynamic_cast<Spanner*> (me->original_))
- {
- int k = broken_spanner_index (dynamic_cast<Spanner*> (me));
- int j = k + dir;
- if (j < 0 || j >= mother->broken_intos_.size ())
- return o;
-
- Grob *neighbour = mother->broken_intos_[j];
- if (dir == RIGHT)
- neighbour->set_property ("direction",
- me->get_property ("direction"));
- Real neighbour_y = get_boundary_notecolumn_y (neighbour, dir);
- Real y = get_boundary_notecolumn_y (me, -dir);
- int neighbour_cols = scm_ilength (neighbour->get_property ("note-columns"));
- int cols = scm_ilength (me->get_property ("note-columns"));
- o = Offset (0, (y*neighbour_cols + neighbour_y*cols) /
- (cols + neighbour_cols));
- }
- return o;
-}
-
-/*
- COMMON is size-2 array with common refpoints.
-
-UGH: this routine delivers offsets which are *not* relative to COMMON.
-
-UGH, we should take COMMON-Y as argument.
-*/
-Offset
-Old_slur::get_attachment (Grob *me, Direction dir,
- Grob **common)
-{
- SCM s = me->get_property ("attachment");
- if (!ly_c_pair_p (s) || !ly_c_symbol_p (index_get_cell (s, dir)))
- {
- s = set_extremities (me);
- }
-
- SCM a = (dir == LEFT) ? ly_car (s) : ly_cdr (s);
- Spanner*sp = dynamic_cast<Spanner*> (me);
- String str = ly_symbol2string (a);
-
- Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
- Real hs = staff_space / 2.0;
- Offset o;
-
- Direction slurdir = to_dir (me->get_property ("direction"));
-
- Grob *stem = 0;
- if (Note_column::has_interface (sp->get_bound (dir)))
- {
- Grob * n =sp->get_bound (dir);
- stem = Note_column::get_stem (n);
- if (stem)
- {
- Real x_extent;
- Grob *head = Note_column::first_head (n);
- if (head)
- x_extent = head->extent (head, X_AXIS).length ();
- else
- x_extent = n->extent (n, X_AXIS).length ();
-
- if (!head)
- {
- o = Offset (0, n->extent (n, Y_AXIS)[slurdir]);
- }
- else if (str == "head")
- {
- o = Offset (0, Stem::head_positions (stem)
- [slurdir] * hs);
- /*
- Default position is centered in X, on outer side of head Y
- */
- o += Offset (0.5 * x_extent,
- 0.5 * staff_space
- * slurdir);
- }
- else if (str == "alongside-stem")
- {
- o = Offset (0, Stem::chord_start_y (stem));
- /*
- Default position is on stem X, on outer side of head Y
- */
- o += Offset (x_extent * (1 + Stem::get_direction (stem)),
- 0.5 * staff_space
- * slurdir);
- }
- else if (str == "stem")
- {
- o = Offset (0, Stem::stem_end_position (stem) * hs);
- /*
- Default position is on stem X, at stem end Y
- */
- Real stem_thickness = Stem::thickness (stem);
- o += Offset (0.5 *
- x_extent * (1 + Stem::get_direction (stem))
- - ((dir + 1)/2) * stem_thickness
- + ((1 - slurdir)/2) * stem_thickness,
- 0);
- }
- }
- }
- /*
- If we're not a note_column, we can't be anything but a loose-end.
- But if user has set (attachment . (stem . stem)), our string is
- stem, not loose-end.
-
- Hmm, maybe after-line-breaking should set this to loose-end? */
- else // if (str == "loose-end")
- {
- SCM other_a = dir == LEFT ? ly_cdr (s) : ly_car (s);
- if (ly_symbol2string (other_a) != "loose-end")
- o = broken_trend_offset (me, dir);
- }
-
- SCM alist = me->get_property ("extremity-offset-alist");
- int stemdir = stem ? Stem::get_direction (stem) : 1;
- SCM l = scm_assoc
- (scm_list_n (a,
- scm_int2num (stemdir * dir),
- scm_int2num (slurdir * dir),
- SCM_UNDEFINED), alist);
-
- if (l != SCM_BOOL_F)
- {
- Offset off = ly_scm2offset (ly_cdr (l)) * staff_space;
- off[X_AXIS] *= dir;
- off[Y_AXIS] *= slurdir;
- o += off;
- }
-
- /*
- What if get_bound () is not a note-column?
- */
- if (str != "loose-end"
- && sp->get_bound (dir)->common_refpoint (common[Y_AXIS], Y_AXIS) == common[Y_AXIS])
- {
- o[Y_AXIS] += sp->get_bound (dir)->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
-
- Offset off = ly_scm2offset (index_get_cell (me->get_property
- ("attachment-offset"),
- dir)) * staff_space;
-
- off[Y_AXIS] *= slurdir;
- o += off;
- return o;
-}
-
-Offset
-Old_slur::encompass_offset (Grob*me,
- Grob* col,
- Grob **common)
-{
- Offset o;
- Grob* stem = unsmob_grob (col->get_property ("stem"));
-
- Direction dir = get_grob_direction (me);
-
- if (!stem)
- {
- programming_error ("No stem for note column?");
- o[X_AXIS] = col->relative_coordinate (common[X_AXIS], X_AXIS);
- o[Y_AXIS] = col->relative_coordinate (common[Y_AXIS], Y_AXIS);
- return o;
- }
- Direction stem_dir = get_grob_direction (stem);
- o[X_AXIS] = stem->relative_coordinate (0, X_AXIS);
-
- /*
- Simply set x to middle of notehead
- */
- Real x_extent;
- if (Grob *head = Note_column::first_head (col))
- x_extent = head->extent (head, X_AXIS).length ();
- else
- x_extent = col->extent (col, X_AXIS).length ();
- o[X_AXIS] -= 0.5 * stem_dir * x_extent;
-
- if ((stem_dir == dir)
- && !stem->extent (stem, Y_AXIS).is_empty ())
- {
- o[Y_AXIS] = stem->extent (common[Y_AXIS], Y_AXIS)[dir];
- }
- else
- {
- o[Y_AXIS] = col->extent (common[Y_AXIS], Y_AXIS)[dir];
- }
-
- /*
- leave a gap: slur mustn't touch head/stem
- */
- o[Y_AXIS] += dir * robust_scm2double (me->get_property ("y-free"), 0) *
- 1.0;
- return o;
-}
-
-Array<Offset>
-Old_slur::get_encompass_offsets (Grob *me)
-{
- Spanner*sp = dynamic_cast<Spanner*> (me);
- SCM eltlist = me->get_property ("note-columns");
- Grob *common[] = {common_refpoint_of_list (eltlist, me, X_AXIS),
- common_refpoint_of_list (eltlist, me, Y_AXIS)};
-
-
- common[X_AXIS] = common[X_AXIS]->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
- common[X_AXIS] = common[X_AXIS]->common_refpoint (sp->get_bound (LEFT), X_AXIS);
-
- Link_array<Grob> encompasses = ly_scm2grobs (eltlist);
- Array<Offset> offsets;
-
- Offset origin (me->relative_coordinate (common[X_AXIS], X_AXIS),
- me->relative_coordinate (common[Y_AXIS], Y_AXIS));
-
- int first = 1;
- int last = encompasses.size () - 2;
-
- offsets.push (get_attachment (me, LEFT, common));
-
- /*
- left is broken edge
- */
- if (encompasses[0] != sp->get_bound (LEFT))
- {
- first--;
-
- // ?
- offsets[0][Y_AXIS] -=
- encompasses[0]->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
-
- /*
- right is broken edge
- */
- if (encompasses.top () != sp->get_bound (RIGHT))
- {
- last++;
- }
-
- for (int i = first; i <= last; i++)
- {
- Offset o (encompass_offset (me, encompasses[i], common));
- offsets.push (o - origin);
- }
-
- offsets.push (Offset (sp->spanner_length (), 0) + get_attachment (me, RIGHT,common));
-
- if (encompasses[0] != sp->get_bound (LEFT))
- {
- offsets.top ()[Y_AXIS] -= encompasses.top ()->relative_coordinate (common[Y_AXIS], Y_AXIS)
- - me->relative_coordinate (common[Y_AXIS], Y_AXIS);
- }
-
- return offsets;
-}
-
-
-
-
-/*
- ugh ?
- */
-MAKE_SCHEME_CALLBACK (Old_slur, height, 2);
-SCM
-Old_slur::height (SCM smob, SCM ax)
-{
- Axis a = (Axis)ly_scm2int (ax);
- Grob * me = unsmob_grob (smob);
- assert (a == Y_AXIS);
-
- SCM mol = me->get_uncached_stencil ();
- Interval ext;
- if (Stencil * m = unsmob_stencil (mol))
- ext = m->extent (a);
- return ly_interval2scm (ext);
-}
-
-/*
- Ugh should have dash-length + dash-period
- */
-MAKE_SCHEME_CALLBACK (Old_slur, print,1);
-SCM
-Old_slur::print (SCM smob)
-{
- Grob * me = unsmob_grob (smob);
- if (!scm_ilength (me->get_property ("note-columns")))
- {
- me->suicide ();
- return SCM_EOL;
- }
-
- Real base_thick = robust_scm2double (me->get_property ("thickness"), 1);
- Real thick = base_thick * Staff_symbol_referencer::line_thickness (me);
-
- Real ss = Staff_symbol_referencer::staff_space (me);
- Bezier one = get_curve (me);
-
- // get_curve may suicide
- if (!scm_ilength (me->get_property ("note-columns")))
- return SCM_EOL;
-
- Stencil a;
-
- /*
- TODO: replace dashed with generic property.
- */
- SCM d = me->get_property ("dashed");
- if (ly_c_number_p (d))
- a = Lookup::dashed_slur (one, thick, thick * robust_scm2double (d, 0));
- else
- a = Lookup::slur (one, get_grob_direction (me) * base_thick * ss / 10.0,
- thick);
-
- return a.smobbed_copy ();
-}
-
-void
-Old_slur::set_control_points (Grob*me)
-{
- Real staff_space = Staff_symbol_referencer::staff_space ((Grob*)me);
-
- SCM details = me->get_property ("details");
- SCM h_inf_scm = me->get_property ("height-limit");
- SCM r_0_scm = me->get_property ("ratio");
-
- Real r_0 = robust_scm2double (r_0_scm, 1);
- Real h_inf = staff_space * ly_scm2double (h_inf_scm);
-
- Slur_bezier_bow bb (get_encompass_offsets (me),
- get_grob_direction (me),
- h_inf, r_0);
-
-
- if (bb.fit_factor () > 1.0)
- {
- Real length = bb.curve_.control_[3][X_AXIS];
- Real default_height = slur_height (length, h_inf, r_0);
-
- SCM ssb = me->get_property ("beautiful");
- Real sb = 0;
- if (ly_c_number_p (ssb))
- sb = ly_scm2double (ssb);
-
- bb.minimise_enclosed_area (sb, details);
- SCM sbf = scm_assq (ly_symbol2scm ("force-blowfit"), details);
- Real bff = 1.0;
- if (ly_c_pair_p (sbf) && ly_c_number_p (ly_cdr (sbf)))
- bff = ly_scm2double (ly_cdr (sbf));
-
- bb.curve_.control_[1][Y_AXIS] *= bff;
- bb.curve_.control_[2][Y_AXIS] *= bff;
- bb.blow_fit ();
-
-
- Real beautiful = length * default_height * sb;
- Real area = bb.get_enclosed_area ();
-
- /*
- Slurs that fit beautifully are not ugly
- */
- if (area > beautiful)
- de_uglify (me, &bb, default_height);
- }
-
- Bezier b = bb.get_bezier ();
-
-
- SCM controls = SCM_EOL;
- for (int i= 4; i--;)
- {
- controls = scm_cons (ly_offset2scm (b.control_[i]), controls);
- /*
- BRRR WHURG.
- All these null control-points, where do they all come from?
- */
- if (i && b.control_[i][X_AXIS] == 0)
- {
- me->suicide ();
- return;
- }
- }
-
- me->set_property ("control-points", controls);
-}
-
-Bezier
-Old_slur::get_curve (Grob*me)
-{
- Bezier b;
- int i = 0;
-
- SCM attach = me->get_property ("attachment");
- if (!ly_c_pair_p (attach))
- attach = set_extremities (me);
-
-
- if (!get_grob_direction (me)
- || ! ly_c_symbol_p (index_get_cell (attach, LEFT))
- || ! ly_c_symbol_p (index_get_cell (attach, RIGHT)))
- set_extremities (me);
-
- if (!ly_c_pair_p (me->get_property ("control-points")))
- set_control_points (me);
-
- // set_control_points may suicide
- if (!scm_ilength (me->get_property ("note-columns")))
- return b;
-
- for (SCM s= me->get_property ("control-points"); s != SCM_EOL; s = ly_cdr (s))
- {
- b.control_[i] = ly_scm2offset (ly_car (s));
- i++;
- }
-
- Array<Offset> enc (get_encompass_offsets (me));
- Direction dir = get_grob_direction (me);
-
- Real x1 = enc[0][X_AXIS];
- Real x2 = enc.top ()[X_AXIS];
-
- Real off = 0.0;
- for (int i=1; i < enc.size ()-1; i++)
- {
- Real x = enc[i][X_AXIS];
- if (x > x1 && x <x2)
- {
- Real y = b.get_other_coordinate (X_AXIS, x);
- off = off >? dir * (enc[i][Y_AXIS] - y);
- }
- }
- b.translate (Offset (0, dir * off));
- return b;
-}
-
-
-
-
-ADD_INTERFACE (Old_slur,"slur-interface",
- "A slur",
- "attachment attachment-offset beautiful control-points dashed details de-uglify-parameters direction extremity-function extremity-offset-alist height-limit note-columns ratio slope-limit thickness y-free quant-score");
-
(arch-width ,ly:dimension? "Width of the hook of a system brace.")
(arpeggio-direction ,ly:dir? "If set, put an
arrow on the arpeggio squiggly line.")
- (attachment ,pair? "Pair of symbols
-indicating how a slur should be attached at the ends. The format is
-'(@var{left-type} . @var{right-type}), where both @var{type}s are
-symbols. The values of these symbols may be @code{alongside-stem},
-@code{stem}, @code{head} or @code{loose-end}.")
- (attachment-offset ,pair? "cons of offsets,
-'(@var{left-offset} . @var{right-offset}). This offset is added to
-the attachments to prevent ugly slurs. [fixme: we need more
-documentation here].")
-
-
+
(auto-knee-gap ,ly:dimension? "If a gap is found between note heads
where a horizontal beam fits that is larger than this number, make a kneed beam.")
(axes ,list? "list of axis numbers.
beaming patterns from stem to stem inside a beam.")
- (beautiful ,number? "number that dictates when a slur should be de-uglyfied. It correlates with the enclosed area between noteheads and slurs. A value of 0.1 yields only undisturbed slurs, a value of 5 will tolerate quite high blown slurs.")
(before-line-breaking-callback ,procedure? "This procedure is
called before line breaking, but after splitting breakable items at
potential line breaks.")
edges '(@var{left-text} . @var{right-text}).")
(excentricity ,number? "How asymmetrical to make a slur. Positive means move the center to the right.")
-(expand-limit ,integer? "maximum number of measures expanded in church rests.")
+ (expand-limit ,integer? "maximum number of measures expanded in church rests.")
;; remove me?
(extra-X-extent ,number-pair? "A grob is enlarged in X dimension
offset is added just before outputting the symbol, so the typesetting
engine is completely oblivious to it.")
- ;; docme.
- (extremity-offset-alist ,list? "The offset adds to the centre of
-the note head, or stem.
-
-Format: alist (attachment stem-dir*dir slur-dir*dir) -> offset.
-")
-
- ;;
- (extremity-function ,procedure? "A function that calculates the
-attachment of a slur-end. The function takes a slur and direction argument and returns a symbol.")
(finger-code ,symbol? "Code for the type of fingering indication in a
fret diagram. Options include @code{none}, @code{in-dot}, and @code{below-string}.")
(flag-style ,symbol?
object.")
(size ,number? "Size of object, relative to standard size.")
(slope ,number? "The slope of this object.")
- (slope-limit ,number? "Set slope to zero if slope is running away
-steeper than this.")
(slur-details ,list?
"An alist of scoring parameters for slur formatting")
(space-alist ,list? "A table that specifies distances between
(staffline-clearance ,ly:dimension? "How far away ties keep from
staff lines.")
- (stem-attachment-function ,procedure? "A function that calculates
-where a stem attaches to the note head? This is a fallback when this
-information is not specified in the font. The function takes a grob
-and axis argument, and returns a (@var{x} . @var{y}) pair, specifying
-location in terms of note head bounding box.")
-
(stem-end-position ,number? "Where does the stem end (the end is opposite to the support-head.")
(stem-shorten ,list? "How much a stem in a forced direction
words in texts.")
(width ,ly:dimension? "The width of a grob measured in staff space.")
(x-gap ,ly:dimension? "The horizontal gap between note head and tie.")
- (y-free ,ly:dimension? "The minimal vertical gap between slur and
-note heads or stems.")
(y-offset ,ly:dimension? "Extra vertical offset for ties away
from the center line.")
(zigzag-length ,ly:dimension? "The length of the lines of a
;; [TODO: change this]
(primitive ,integer? "Pointer to a ligature primitive, i.e. an item similar to a note head that is part of a ligature. ")
(stencil ,ly:stencil? "Cached output of the print-function.")
- (de-uglify-parameters ,list? "list of 3 real constants. They
-define the valid areas for the middle control points. They are
-empirical.")
(ideal-distances ,list? "(@var{obj} . (@var{dist} . @var{strength})) pairs.")
(minimum-distances ,list? "list of rods, that have the format (@var{obj} . @var{dist}).")
projects / lilypond.git / commitdiff