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/*
Copyright (C) 2001-2003 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#ifndef __ardour_curve_h__
#define __ardour_curve_h__
#include <sys/types.h>
#include <sigc++/signal.h>
#include <glibmm/thread.h>
#include <pbd/undo.h>
#include <list>
#include <algorithm>
#include <ardour/automation_event.h>
namespace ARDOUR {
struct CurvePoint : public ControlEvent
{
double coeff[4];
CurvePoint (double w, double v)
: ControlEvent (w, v) {
coeff[0] = coeff[1] = coeff[2] = coeff[3] = 0.0;
}
~CurvePoint() {}
};
class Curve : public AutomationList
{
public:
Curve (double min_yval, double max_yval, double defaultvalue, bool nostate = false);
~Curve ();
Curve (const Curve& other);
Curve (const Curve& other, double start, double end);
bool rt_safe_get_vector (double x0, double x1, float *arg, int32_t veclen);
void get_vector (double x0, double x1, float *arg, int32_t veclen);
AutomationEventList::iterator closest_control_point_before (double xval);
AutomationEventList::iterator closest_control_point_after (double xval);
void solve ();
static sigc::signal<void, Curve*> CurveCreated;
protected:
ControlEvent* point_factory (double,double) const;
ControlEvent* point_factory (const ControlEvent&) const;
#ifdef STATE_MANAGER
Change restore_state (StateManager::State&);
#endif
private:
AutomationList::iterator last_bound;
double unlocked_eval (double where);
double multipoint_eval (double x);
void _get_vector (double x0, double x1, float *arg, int32_t veclen);
};
} // namespace ARDOUR
extern "C" {
void curve_get_vector_from_c (void *arg, double, double, float*, int32_t);
}
#endif /* __ardour_curve_h__ */
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