curvegradient.cpp File Reference

Implementation of the "Curve Gradient" layer. More...

#include "curvegradient.h"
#include <synfig/string.h>
#include <synfig/time.h>
#include <synfig/context.h>
#include <synfig/paramdesc.h>
#include <synfig/renddesc.h>
#include <synfig/surface.h>
#include <synfig/value.h>
#include <synfig/valuenode.h>
#include <synfig/cairo_renddesc.h>
#include <ETL/bezier>
#include <ETL/hermite>
#include <ETL/calculus>

Macros
#define	FAKE_TANGENT_STEP   0.000001
#define	POINT_CHECK(x)   bp=curve(x); thisdist=(bp-p).mag_squared(); if(thisdist<dist) { ret=iter; dist=thisdist; best_bline_dist=total_bline_dist; /* best_bline_len=len; */ best_curve=curve; }

Functions
	SYNFIG_LAYER_INIT (CurveGradient)
	SYNFIG_LAYER_SET_NAME (CurveGradient,"curve_gradient")
	SYNFIG_LAYER_SET_LOCAL_NAME (CurveGradient, N_("Curve Gradient"))
	SYNFIG_LAYER_SET_CATEGORY (CurveGradient, N_("Gradients"))
	SYNFIG_LAYER_SET_VERSION (CurveGradient,"0.0")
	SYNFIG_LAYER_SET_CVS_ID (CurveGradient,"$Id$")
float	calculate_distance (const synfig::BLinePoint &a, const synfig::BLinePoint &b)
float	calculate_distance (const std::vector< synfig::BLinePoint > &bline, bool bline_loop)
std::vector < synfig::BLinePoint > ::const_iterator	find_closest (bool fast, const std::vector< synfig::BLinePoint > &bline, const Point &p, float &t, bool loop=false, float *bline_dist_ret=0)

Detailed Description

Implementation of the "Curve Gradient" layer.

$Id$

=== N O T E S ===========================================================

---

Macro Definition Documentation

#define FAKE_TANGENT_STEP   0.000001

#define POINT_CHECK

(

x

)

bp=curve(x); thisdist=(bp-p).mag_squared(); if(thisdist<dist) { ret=iter; dist=thisdist; best_bline_dist=total_bline_dist; /* best_bline_len=len; */ best_curve=curve; }

Function Documentation

SYNFIG_LAYER_INIT

(

CurveGradient

)

SYNFIG_LAYER_SET_NAME	(	CurveGradient	,
		"curve_gradient"
	)

SYNFIG_LAYER_SET_LOCAL_NAME	(	CurveGradient	,
		N_("Curve Gradient")
	)

SYNFIG_LAYER_SET_CATEGORY	(	CurveGradient	,
		N_("Gradients")
	)

SYNFIG_LAYER_SET_VERSION	(	CurveGradient	,
		"0.0"
	)

SYNFIG_LAYER_SET_CVS_ID	(	CurveGradient	,
		"$Id$"
	)

float calculate_distance ( const synfig::BLinePoint &  a, const synfig::BLinePoint &  b  )

inline

References synfig::BLinePoint::get_tangent1(), synfig::BLinePoint::get_tangent2(), synfig::BLinePoint::get_vertex(), and synfig::Vector::mag().

float calculate_distance ( const std::vector< synfig::BLinePoint > &  bline, bool  bline_loop  )

inline

std::vector<synfig::BLinePoint>::const_iterator find_closest	(	bool	fast,
		const std::vector< synfig::BLinePoint > &	bline,
		const Point &	p,
		float &	t,
		bool	loop = false,
		float *	bline_dist_ret = 0
	)

Todo:

is this a redundant call to find_closest()?

References POINT_CHECK.

Referenced by synfig::find_closest_point().