2 Copyright (C) 2001-2003 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef __ardour_curve_h__
22 #define __ardour_curve_h__
24 #include <sys/types.h>
25 #include <sigc++/signal.h>
26 #include <glibmm/thread.h>
30 #include <ardour/automation_event.h>
34 struct CurvePoint : public ControlEvent
38 CurvePoint (double w, double v)
39 : ControlEvent (w, v) {
41 coeff[0] = coeff[1] = coeff[2] = coeff[3] = 0.0;
47 class Curve : public AutomationList
50 Curve (double min_yval, double max_yval, double defaultvalue, bool nostate = false);
52 Curve (const Curve& other);
53 Curve (const Curve& other, double start, double end);
54 Curve (const XMLNode&);
56 bool rt_safe_get_vector (double x0, double x1, float *arg, int32_t veclen);
57 void get_vector (double x0, double x1, float *arg, int32_t veclen);
59 AutomationEventList::iterator closest_control_point_before (double xval);
60 AutomationEventList::iterator closest_control_point_after (double xval);
64 static sigc::signal<void, Curve*> CurveCreated;
67 ControlEvent* point_factory (double,double) const;
68 ControlEvent* point_factory (const ControlEvent&) const;
71 AutomationList::iterator last_bound;
73 double unlocked_eval (double where);
74 double multipoint_eval (double x);
76 void _get_vector (double x0, double x1, float *arg, int32_t veclen);
83 void curve_get_vector_from_c (void *arg, double, double, float*, int32_t);
86 #endif /* __ardour_curve_h__ */