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Add boolean parameter 'Positive Only' to stop negative affect from large distances.
[synfig.git]
/
ETL
/
trunk
/
ETL
/
_bezier.h
diff --git
a/ETL/trunk/ETL/_bezier.h
b/ETL/trunk/ETL/_bezier.h
index
7e26796
..
4851a98
100644
(file)
--- a/
ETL/trunk/ETL/_bezier.h
+++ b/
ETL/trunk/ETL/_bezier.h
@@
-4,6
+4,7
@@
** $Id$
**
** Copyright (c) 2002 Robert B. Quattlebaum Jr.
** $Id$
**
** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+** Copyright (c) 2007 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
@@
-30,7
+31,8
@@
/* === H E A D E R S ======================================================= */
#include "_curve_func.h"
/* === H E A D E R S ======================================================= */
#include "_curve_func.h"
-#include <ETL/fixed>
+#include <cmath> // for ldexp
+// #include <ETL/fixed> // not used
/* === M A C R O S ========================================================= */
/* === M A C R O S ========================================================= */
@@
-575,6
+577,7
@@
public:
distance_type find_distance(time_type r, time_type s, int steps=7)const
{
const time_type inc((s-r)/steps);
distance_type find_distance(time_type r, time_type s, int steps=7)const
{
const time_type inc((s-r)/steps);
+ if (!inc) return 0;
distance_type ret(0);
value_type last(operator()(r));
distance_type ret(0);
value_type last(operator()(r));
@@
-606,7
+609,7
@@
public:
*/
void subdivide(bezier *left, bezier *right, const time_type &time = (time_type)0.5) const
{
*/
void subdivide(bezier *left, bezier *right, const time_type &time = (time_type)0.5) const
{
- time_type t=(t-get_r())/get_dt();
+ time_type t=(t
ime
-get_r())/get_dt();
bezier lt,rt;
value_type temp;
bezier lt,rt;
value_type temp;
@@
-925,7
+928,7
@@
private:
/*
* NearestPointOnCurve :
* Compute the parameter value of the point on a Bezier
/*
* NearestPointOnCurve :
* Compute the parameter value of the point on a Bezier
- * curve segment closest to some arb
t
itrary, user-input point.
+ * curve segment closest to some arbitrary, user-input point.
* Return the point on the curve at that parameter value.
*
* value_type& P; The user-supplied point
* Return the point on the curve at that parameter value.
*
* value_type& P; The user-supplied point