From e8742b92323c1025d5bfbebd778ec043ab333fcf Mon Sep 17 00:00:00 2001
From: fred <fred>
Date: Thu, 28 Nov 1996 11:53:56 +0000
Subject: [PATCH] lilypond-0.0.11

---
 src/slur.cc | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 src/slur.cc

diff --git a/src/slur.cc b/src/slur.cc
new file mode 100644
index 0000000000..171f3b04dd
--- /dev/null
+++ b/src/slur.cc
@@ -0,0 +1,105 @@
+#include "slur.hh"
+#include "lookup.hh"
+#include "paper.hh"
+#include "notehead.hh"
+#include "pcol.hh"
+#include "molecule.hh"
+#include "debug.hh"
+#include "boxes.hh"
+
+void
+Slur::add(Notehead*n)
+{
+    encompass.add(n);
+    dir = 0;
+    open_right=open_left=false;
+}
+
+Interval
+Slur::height() const
+{
+    return Interval(0,0);	// todo
+}
+
+void
+Slur::set_default_dir()
+{
+    int sumpos=0;
+    for (int i=0; i < encompass.sz(); i ++) {
+	sumpos += encompass[i]->position;
+    }
+
+    /* should consult stems */
+    Real meanpos = sumpos/Real(encompass.sz());
+    if (meanpos < 5)		// todo
+	dir = -1;
+    else
+	dir = 1;    
+}
+
+void
+Slur::print()const
+{
+    mtor << "Slur.\n";   
+}
+
+void
+Slur::preprocess()
+{
+    right  = encompass.last()->pcol_;
+    left = encompass[0]->pcol_;    
+}
+
+Spanner*
+Slur::broken_at(const PCol*l, const PCol*r) const
+{
+    assert(l->line == r->line);
+    Slur*ret = new Slur(*this);
+    ret->encompass.set_size(0);
+    for (int i =0; i < encompass.sz(); i++) {
+	if (encompass[i]->pcol_->line==l->line)
+	    ret->encompass.add(encompass[i]);
+    }
+    if (right != r)
+	ret->open_right = true;
+    if (left != l)
+	ret->open_left = true;
+
+    ret->left = l;
+    ret->right = r;
+    return ret;
+}
+
+void
+Slur::process()
+{
+    set_default_dir();
+    brew_molecule();
+}
+
+void
+Slur::brew_molecule()
+{
+    output = new Molecule;
+    assert(left->line == right->line);
+    int minp=1000, maxp=-1000;	// todo
+    for (int i=0; i<encompass.sz(); i++) {
+	minp = MIN(encompass[i]->position, minp);
+	maxp = MAX(encompass[i]->position, maxp);
+    }
+    
+    assert(encompass.sz()>0);	// todo
+    int pos1 = encompass.last()->position;
+    int pos2 = encompass[0]->position;
+
+    int dy =  pos1-pos2;
+
+    Real w = width().length();
+    Real nw = paper()->note_width();
+    w -= nw;
+    Symbol sl = paper()->lookup_->slur(dy , w, dir);
+    Atom a(sl);
+    a.translate(Offset(nw,pos2*paper()->internote()));
+    output->add(a);
+}
+
-- 
2.39.5