/*
vaticana-ligature.cc -- implement Vaticana_ligature
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 2003 Juergen Reuter <reuter@ipd.uka.de>
+
+ (c) 2003--2008 Juergen Reuter <reuter@ipd.uka.de>
*/
-#include <math.h>
-#include "item.hh"
#include "vaticana-ligature.hh"
+
+#include "bezier.hh"
#include "font-interface.hh"
-#include "molecule.hh"
+#include "international.hh"
+#include "item.hh"
#include "lookup.hh"
-#include "staff-symbol-referencer.hh"
#include "note-head.hh"
-#include "paper-def.hh"
-#include "bezier.hh"
+#include "output-def.hh"
+#include "staff-symbol-referencer.hh"
#include "warn.hh"
+Stencil
+vaticana_brew_cauda (Grob *me,
+ int pos,
+ int delta_pitch,
+ Real thickness,
+ Real blotdiameter)
+{
+ bool on_staffline = Staff_symbol_referencer::on_line (me, pos);
+ int interspaces = Staff_symbol_referencer::line_count (me) - 1;
+ bool above_staff = pos > interspaces;
+
+ if (delta_pitch > -1)
+ {
+ me->programming_error ("flexa cauda: invalid delta_pitch; assuming -1");
+ delta_pitch = -1;
+ }
+ Real length;
+ if (on_staffline)
+ {
+ if (delta_pitch >= -1)
+ length = 1.30;
+ else if (delta_pitch >= -2)
+ length = 1.35;
+ else
+ length = 1.85;
+ }
+ else
+ {
+ if (delta_pitch >= -1)
+ if (above_staff)
+ length = 1.30;
+ else
+ length = 1.00;
+ else if (delta_pitch >= -2)
+ length = 1.35;
+ else if (delta_pitch >= -3)
+ length = 1.50;
+ else
+ length = 1.85;
+ }
+ Box cauda_box (Interval (0, thickness), Interval (-length, 0));
+ return Lookup::round_filled_box (cauda_box, blotdiameter);
+}
+
/*
* TODO: move this function to class Lookup?
*/
-Molecule
+Stencil
vaticana_brew_flexa (Grob *me,
bool solid,
- Real thickness,
- Direction stem_direction)
+ Real line_thickness)
{
Real staff_space = Staff_symbol_referencer::staff_space (me);
- Molecule molecule = Molecule ();
+ Stencil stencil;
Real right_height = 0.6 * staff_space;
Real interval;
- SCM flexa_height_scm = me->get_grob_property ("flexa-height");
+ SCM flexa_height_scm = me->get_property ("flexa-height");
if (flexa_height_scm != SCM_EOL)
- {
- interval = gh_scm2int (flexa_height_scm);
- }
+ interval = scm_to_int (flexa_height_scm);
else
{
me->warning ("Vaticana_ligature: "
- "flexa-height undefined; assuming 0");
+ + _ ("flexa-height undefined; assuming 0"));
interval = 0.0;
}
if (interval >= 0.0)
- {
- me->warning (_ ("ascending vaticana style flexa"));
- }
-
- Real width;
- SCM flexa_width_scm = me->get_grob_property ("flexa-width");
- if (flexa_width_scm != SCM_EOL)
- {
- width = gh_scm2double (flexa_width_scm);
- }
- else
- {
- me->warning ("Vaticana_ligature:"
- "flexa-width undefined; assuming 2.0");
- width = 2.0 * staff_space;
- }
-
- bool add_stem = to_boolean (me->get_grob_property ("add-stem"));
-
- // Compensate thickness that appears to be smaller in steep section
- // of bend.
- Real left_height =
- right_height +
- min (0.12 * abs(interval), 0.3) * staff_space;
-
- if (add_stem)
- {
- bool consider_interval =
- stem_direction * interval > 0.0;
-
- Interval stem_box_x (0, thickness);
- Interval stem_box_y;
-
- if (consider_interval)
- {
- Real y_length = max (abs(interval)/2.0*staff_space +
- (right_height-left_height),
- 1.2*staff_space);
- stem_box_y = Interval (0, y_length);
- }
- else
- stem_box_y = Interval (0, staff_space);
-
- Real y_correction =
- (stem_direction == UP) ?
- +0.5*left_height :
- -0.5*left_height - stem_box_y.length();
-
- Box stem_box (stem_box_x, stem_box_y);
- Molecule stem = Lookup::filledbox (stem_box);
- stem.translate_axis (y_correction, Y_AXIS);
- molecule.add_molecule(stem);
- }
-
- // Compensate optical illusion regarding vertical position of left
- // and right endings due to curved shape.
- Real ypos_correction = -0.1*staff_space * sign(interval);
- Real interval_correction = 0.2*staff_space * sign(interval);
- Real corrected_interval = interval*staff_space + interval_correction;
-
- // middle curve of flexa shape
+ me->warning (_ ("ascending vaticana style flexa"));
+
+ Real width = robust_scm2double (me->get_property ("flexa-width"), 2);
+
+ /*
+ * Compensate curve thickness that appears to be smaller in steep
+ * section of bend.
+ */
+ Real left_height
+ = right_height
+ + min (0.12 * abs (interval), 0.3) * staff_space;
+
+ /*
+ * Compensate optical illusion regarding vertical position of left
+ * and right endings due to curved shape.
+ */
+ Real ypos_correction = -0.1 * staff_space * sign (interval);
+ Real interval_correction = 0.2 * staff_space * sign (interval);
+ Real corrected_interval = interval * staff_space + interval_correction;
+
+ /*
+ * middle curve of flexa shape
+ */
Bezier curve;
curve.control_[0] = Offset (0.00 * width, 0.0);
curve.control_[1] = Offset (0.33 * width, corrected_interval / 2.0);
Bezier top_curve = curve, bottom_curve = curve;
for (int i = 0; i < 4; i++)
{
- Real thickness = 0.33 * ((3 - i)*left_height + i*right_height);
- top_curve.control_[i] += Offset (0, +0.5*thickness);
- bottom_curve.control_[i] += Offset (0, -0.5*thickness);
+ Real curve_thickness = 0.33 * ((3 - i) * left_height + i * right_height);
+ top_curve.control_[i] += Offset (0, 0.5 * curve_thickness);
+ bottom_curve.control_[i] -= Offset (0, 0.5 * curve_thickness);
}
if (solid)
{
- Molecule solid_head =
- Lookup::bezier_sandwich (top_curve, bottom_curve);
- molecule.add_molecule (solid_head);
+ Stencil solid_head
+ = Lookup::bezier_sandwich (top_curve, bottom_curve);
+ stencil.add_stencil (solid_head);
}
else // outline
{
Bezier inner_top_curve = top_curve;
- inner_top_curve.translate (Offset (0.0, -thickness));
- Molecule top_edge =
- Lookup::bezier_sandwich (top_curve, inner_top_curve);
- molecule.add_molecule(top_edge);
+ inner_top_curve.translate (Offset (0.0, -line_thickness));
+ Stencil top_edge
+ = Lookup::bezier_sandwich (top_curve, inner_top_curve);
+ stencil.add_stencil (top_edge);
Bezier inner_bottom_curve = bottom_curve;
- inner_bottom_curve.translate (Offset (0.0, +thickness));
- Molecule bottom_edge =
- Lookup::bezier_sandwich (bottom_curve, inner_bottom_curve);
- molecule.add_molecule(bottom_edge);
-
- // TODO: Use horizontal slope with proper slope value rather
- // than filled box for left edge, since the filled box stands
- // out from the flexa shape if the interval is big and the line
- // thickness small. The difficulty here is to compute a proper
- // slope value, as it should roughly be equal with the slope of
- // the left end of the bezier curve.
- Box left_edge_box (Interval (0, thickness),
- Interval (-0.5*left_height, +0.5*left_height));
- Molecule left_edge = Lookup::filledbox (left_edge_box);
- molecule.add_molecule(left_edge);
-
- Box right_edge_box (Interval (-thickness, 0),
- Interval (-0.5*right_height, +0.5*right_height));
- Molecule right_edge = Lookup::filledbox (right_edge_box);
+ inner_bottom_curve.translate (Offset (0.0, +line_thickness));
+ Stencil bottom_edge
+ = Lookup::bezier_sandwich (bottom_curve, inner_bottom_curve);
+ stencil.add_stencil (bottom_edge);
+
+ /*
+ * TODO: Use horizontal slope with proper slope value rather
+ * than filled box for left edge, since the filled box stands
+ * out from the flexa shape if the interval is big and the line
+ * thickness small. The difficulty here is to compute a proper
+ * slope value, as it should roughly be equal with the slope of
+ * the left end of the bezier curve.
+ */
+ Box left_edge_box (Interval (0, line_thickness),
+ Interval (-0.5 * left_height, +0.5 * left_height));
+ Stencil left_edge = Lookup::filled_box (left_edge_box);
+ stencil.add_stencil (left_edge);
+
+ Box right_edge_box (Interval (-line_thickness, 0),
+ Interval (-0.5 * right_height, +0.5 * right_height));
+ Stencil right_edge = Lookup::filled_box (right_edge_box);
right_edge.translate_axis (width, X_AXIS);
right_edge.translate_axis (corrected_interval / 2.0, Y_AXIS);
- molecule.add_molecule(right_edge);
+ stencil.add_stencil (right_edge);
}
- molecule.translate_axis (ypos_correction, Y_AXIS);
- return molecule;
+ stencil.translate_axis (ypos_correction, Y_AXIS);
+ return stencil;
}
-void
-vaticana_add_ledger_lines (Grob *me, Molecule *out, int pos, Real offs,
- bool ledger_take_space)
+Stencil
+vaticana_brew_join (Grob *me, int delta_pitch,
+ Real join_thickness, Real blotdiameter)
{
- int interspaces = Staff_symbol_referencer::line_count (me)-1;
- if (abs (pos) - interspaces > 1)
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+ if (!delta_pitch)
{
- Interval hd = out->extent (X_AXIS);
- Real left_ledger_protusion = hd.length ()/4;
- Real right_ledger_protusion = left_ledger_protusion;
-
- Interval l_extents = Interval (hd[LEFT] - left_ledger_protusion,
- hd[RIGHT] + right_ledger_protusion);
- Molecule ledger_lines =
- Note_head::brew_ledger_lines (me, pos, interspaces,
- l_extents,
- ledger_take_space);
- ledger_lines.translate_axis (offs, Y_AXIS);
- out->add_molecule (ledger_lines);
+ me->programming_error (_ ("Vaticana_ligature: "
+ "zero join (delta_pitch == 0)"));
+ return Lookup::blank (Box (Interval (0, 0), Interval (0, 0)));
}
+ Interval x_extent = Interval (0, join_thickness);
+ Interval y_extent = (delta_pitch > 0)
+ ? Interval (0, delta_pitch * 0.5 * staff_space) : // ascending join
+ Interval (delta_pitch * 0.5 * staff_space, 0); // descending join
+ Box join_box (x_extent, y_extent);
+ return Lookup::round_filled_box (join_box, blotdiameter);
}
-Molecule
-vaticana_brew_primitive (Grob *me, bool ledger_take_space)
+Stencil
+vaticana_brew_primitive (Grob *me)
{
- SCM glyph_name_scm = me->get_grob_property ("glyph-name");
+ SCM glyph_name_scm = me->get_property ("glyph-name");
if (glyph_name_scm == SCM_EOL)
{
- programming_error ("Vaticana_ligature:"
- "undefined glyph-name -> ignoring grob");
- return Molecule ();
+ me->programming_error ("Vaticana_ligature: "
+ "undefined glyph-name -> ignoring grob");
+ return Lookup::blank (Box (Interval (0, 0), Interval (0, 0)));
}
- String glyph_name = ly_scm2string (glyph_name_scm);
- if (!String::compare (glyph_name, ""))
- {
- // empty head (typically, this is the right side of flexa shape,
- // which is already typeset by the associated left side head);
- // nothing left to do
- return Molecule ();
- }
+ string glyph_name = ly_scm2string (glyph_name_scm);
- Molecule out;
- int flexa_height = 0;
- Real thickness = 0.0;
- Real staff_space = Staff_symbol_referencer::staff_space (me);
+ Stencil out;
+ Real thickness = robust_scm2double (me->get_property ("thickness"), 1);
- SCM thickness_scm = me->get_grob_property ("thickness");
- if (thickness_scm != SCM_EOL)
- {
- thickness = gh_scm2double (thickness_scm);
- }
+ Real line_thickness
+ = thickness * me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+
+ Real blotdiameter
+ = (me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter")));
+
+ int pos = Staff_symbol_referencer::get_rounded_position (me);
+
+ SCM delta_pitch_scm = me->get_property ("delta-position");
+ int delta_pitch;
+ if (delta_pitch_scm != SCM_EOL)
+ delta_pitch = scm_to_int (delta_pitch_scm);
else
- {
- programming_error (_f ("Vaticana_ligature:"
- "thickness undefined; assuming 1.4",
- me));
- thickness = 1.4 * me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
- }
+ delta_pitch = 0;
- Real x_offset = 0.0;
- SCM x_offset_scm = me->get_grob_property ("x-offset");
- if (x_offset_scm != SCM_EOL)
+ Real x_offset = robust_scm2double (me->get_property ("x-offset"), 0);
+
+ bool add_stem = to_boolean (me->get_property ("add-stem"));
+ bool add_cauda = to_boolean (me->get_property ("add-cauda"));
+ bool add_join = to_boolean (me->get_property ("add-join"));
+
+ if (glyph_name == "")
{
- x_offset = gh_scm2double (x_offset_scm);
+ /*
+ * This is an empty head. This typically applies for the right
+ * side of a curved flexa shape, which is already typeset by the
+ * associated left side head. The only possible thing left to
+ * do is to draw a vertical join to the next head. (Urgh: need
+ * flexa_width.)
+ */
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+ Real flexa_width = robust_scm2double (me->get_property ("flexa-width"), 2) * staff_space;
+ out
+ = Lookup::blank (Box (Interval (0, 0.5 * flexa_width), Interval (0, 0)));
}
+ else if (glyph_name == "flexa")
+ out = vaticana_brew_flexa (me, true, line_thickness);
else
{
- programming_error (_f ("Vaticana_ligature:"
- "x-offset undefined; assuming 0.0",
- me));
+ out
+ = Font_interface::get_default_font (me)->
+ find_by_name ("noteheads.s" + glyph_name);
}
+ out.translate_axis (x_offset, X_AXIS);
+ Real head_width = out.extent (X_AXIS).length ();
- if (!String::compare (glyph_name, "flexa"))
+ if (add_cauda)
{
- out = vaticana_brew_flexa (me, true, thickness, DOWN);
- }
- else
- {
- Molecule mol =
- Font_interface::get_default_font (me)->
- find_by_name ("noteheads-" + glyph_name);
- mol.translate_axis (x_offset, X_AXIS);
- out.add_molecule (mol);
+ Stencil cauda
+ = vaticana_brew_cauda (me, pos, delta_pitch,
+ line_thickness, blotdiameter);
+ out.add_stencil (cauda);
}
- if (to_boolean (me->get_grob_property ("join-left")))
+ if (add_stem)
{
- SCM delta_pitch_scm = me->get_grob_property ("delta-pitch");
- if (delta_pitch_scm != SCM_EOL)
- {
- int delta_pitch = gh_scm2int (delta_pitch_scm);
- if (!delta_pitch)
- programming_error (_f ("Vaticana_ligature: (delta_pitch == 0)"));
- Real blotdiameter = (me->get_paper ()->get_realvar (ly_symbol2scm ("blotdiameter")));
- Interval x_extent = Interval (0, thickness);
- Interval y_extent = (delta_pitch > 0) ?
- Interval (-delta_pitch * 0.5 * staff_space, 0) : // ascending join
- Interval (0, -delta_pitch * 0.5 * staff_space); // descending join
- Box stem_box (x_extent, y_extent);
-
- Molecule stem = Lookup::roundfilledbox (stem_box, blotdiameter);
- out.add_molecule (stem);
- }
- else
- {
- programming_error (_f ("Vaticana_ligature:"
- "delta-pitch -> ignoring join",
- me));
- }
+ Stencil stem
+ = vaticana_brew_cauda (me, pos, -1,
+ line_thickness, blotdiameter);
+ stem.translate_axis (head_width - line_thickness, X_AXIS);
+ out.add_stencil (stem);
}
- int pos = (int)rint (Staff_symbol_referencer::get_position (me));
- vaticana_add_ledger_lines(me, &out, pos, 0, ledger_take_space);
- if (!String::compare (glyph_name, "flexa"))
+ if (add_join)
{
- pos += flexa_height;
- vaticana_add_ledger_lines(me, &out, pos, 0.5*flexa_height, ledger_take_space);
+ Stencil join
+ = vaticana_brew_join (me, delta_pitch, line_thickness, blotdiameter);
+ join.translate_axis (head_width - line_thickness, X_AXIS);
+ out.add_stencil (join);
}
return out;
Vaticana_ligature::brew_ligature_primitive (SCM smob)
{
Grob *me = unsmob_grob (smob);
- SCM primitive = vaticana_brew_primitive (me, false).smobbed_copy ();
+ SCM primitive = vaticana_brew_primitive (me).smobbed_copy ();
return primitive;
}
-MAKE_SCHEME_CALLBACK (Vaticana_ligature, brew_molecule, 1);
+MAKE_SCHEME_CALLBACK (Vaticana_ligature, print, 1);
SCM
-Vaticana_ligature::brew_molecule (SCM)
+Vaticana_ligature::print (SCM)
{
return SCM_EOL;
}
-ADD_INTERFACE (Vaticana_ligature, "vaticana-ligature-interface",
- "A vaticana style gregorian ligature",
- "glyph-name flexa-height flexa-width thickness join-left "
- "delta-pitch add-stem x-offset ligature-primitive-callback");
+ADD_INTERFACE (Vaticana_ligature,
+ "A vaticana style Gregorian ligature.",
+
+ /* properties */
+ "glyph-name "
+ "flexa-height "
+ "flexa-width "
+ "thickness "
+ "add-cauda "
+ "add-stem "
+ "add-join "
+ "delta-position "
+ "x-offset "
+ );
projects / lilypond.git / blobdiff