Locate and position the current Audacity source code, and clear a variety of old junk out of the way into junk-branches

src/Snap.h

@@ -0,0 +1,76 @@
+/**********************************************************************
+
+  Audacity: A Digital Audio Editor
+  
+  Snap.h
+ 
+  Dominic Mazzoni
+
+  Create one of these objects at the beginning of a click/drag.
+  Then, given a time corresponding to the current mouse cursor
+  position, it will tell you the closest place to snap to.
+
+**********************************************************************/
+
+#ifndef __AUDACITY_SNAP__
+#define __AUDACITY_SNAP__
+
+#include <wx/defs.h>
+#include <wx/dynarray.h>
+
+#include "Track.h"
+#include "ViewInfo.h"
+
+class TrackClipArray;
+
+class SnapPoint {
+ public:
+   SnapPoint(double t, Track *track) {
+      this->t = t;
+      this->track = track;
+   }
+   double t;
+   Track *track;
+};
+
+WX_DEFINE_SORTED_ARRAY(SnapPoint *, SnapPointArray);
+
+class SnapManager {
+ public:
+   SnapManager(TrackList *tracks, TrackClipArray *exclusions,
+               double zoom, int pixelTolerance);
+
+   ~SnapManager();
+
+   // The track may be NULL.
+   // Returns true if the output time is not the same as the input.
+   // Pass rightEdge=true if this is the right edge of a selection,
+   // and false if it's the left edge.
+   bool Snap(Track *currentTrack,
+             double t,
+             bool rightEdge,
+             double *out_t);
+
+ private:
+   double Get(int index);
+   double Diff(double t, int index);
+   int Find(double t, int i0, int i1);
+   int Find(double t);
+
+   double           mEpsilon;
+   double           mTolerance;
+   double           mZoom;
+   SnapPointArray  *mSnapPoints;
+};
+
+#endif
+
+// Indentation settings for Vim and Emacs.
+// Please do not modify past this point.
+//
+// Local Variables:
+// c-basic-offset: 3
+// indent-tabs-mode: nil
+// End:
+//
+// vim: et sts=3 sw=3