Remove ancient trunk folder from svn repository

[synfig.git] / ETL / ETL / _bezier_angle.h

diff --git a/ETL/ETL/_bezier_angle.h b/ETL/ETL/_bezier_angle.h
new file mode 100644 (file)
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+++ b/ETL/ETL/_bezier_angle.h
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+/*! ========================================================================
+** Extended Template Library
+** Bezier Template Class Implementation (Angle Specialization)
+** $Id$
+**
+** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**
+** This package 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 package 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.
+**
+** === N O T E S ===========================================================
+**
+** This is an internal header file, included by other ETL headers.
+** You should not attempt to use it directly.
+**
+** ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __ETL__BEZIER_ANGLE_H
+#define __ETL__BEZIER_ANGLE_H
+
+/* === H E A D E R S ======================================================= */
+
+#include "_curve_func.h"
+#include "angle"
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+_ETL_BEGIN_NAMESPACE
+
+/*
+template <>
+class bezier_base<angle> : std::unary_function<float,angle>
+{
+public:
+       typedef angle value_type;
+       typedef float time_type;
+private:
+       affine_combo<value_type,time_type> affine_func;
+       value_type a,b,c,d;
+       time_type r,s;
+
+public:
+       bezier_base():r(0.0),s(1.0) { }
+       bezier_base(
+               const value_type &a, const value_type &b, const value_type &c, const value_type &d,
+               const time_type &r=0.0, const time_type &s=1.0):
+               a(a),b(b),c(c),d(d),r(r),s(s) { sync(); }
+
+       void sync(void)
+       {
+       }
+
+       value_type
+       operator()(time_type t)const
+       {
+               t=(t-r)/(s-r);
+               return
+               affine_func(
+                       affine_func(
+                               affine_func(a,b,t),
+                               affine_func(b,c,t)
+                       ,t),
+                       affine_func(
+                               affine_func(b,c,t),
+                               affine_func(c,d,t)
+                       ,t)
+               ,t);
+       }
+
+       void set_rs(time_type new_r, time_type new_s) { r=new_r; s=new_s; }
+       void set_r(time_type new_r) { r=new_r; }
+       void set_s(time_type new_s) { s=new_s; }
+       const time_type &get_r(void)const { return r; }
+       const time_type &get_s(void)const { return s; }
+       time_type get_dt(void)const { return s-r; }
+
+       value_type &
+       operator[](int i)
+       { return (&a)[i]; }
+
+       const value_type &
+       operator[](int i) const
+       { return (&a)[i]; }
+};
+*/
+
+_ETL_END_NAMESPACE
+
+/* === E X T E R N S ======================================================= */
+
+/* === E N D =============================================================== */
+
+#endif
+