#include "curve_tools.h"
#include <float.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>

Include dependency graph for curve_tools.c:

This graph shows which files directly or indirectly include this file:

Macros
#define	EPSILON 2 * FLT_MIN

#define	MAX_ITER 10

Functions
float	spline_cubic_val (int n, float t[], float tval, float y[], float ypp[])

float	catmull_rom_val (int n, float x[], float xval, float y[], float tangents[])

float *	spline_cubic_set (int n, float t[], float y[])

float *	catmull_rom_set (int n, float x[], float y[])

float *	monotone_hermite_set (int n, float x[], float y[])

float *	d3_np_fs (int n, float a[], float b[])

static float *	spline_cubic_set_internal (int n, float t[], float y[], int ibcbeg, float ybcbeg, int ibcend, float ybcend)

float *	interpolate_set (int n, float x[], float y[], unsigned int type)

float	interpolate_val (int n, float x[], float xval, float y[], float tangents[], unsigned int type)

int	CurveDataSample (CurveData curve, CurveSample sample)

Variables
static const int	curvedata_anchors_max = 20

float(*	spline_val [])(int, float[], float, float[], float[]) = { spline_cubic_val, catmull_rom_val, catmull_rom_val }

float (	spline_set [])(int, float[], float[]) = { spline_cubic_set, catmull_rom_set, monotone_hermite_set }

Macro Definition Documentation

◆ EPSILON

#define EPSILON 2 * FLT_MIN

◆ MAX_ITER

#define MAX_ITER 10

Function Documentation

◆ catmull_rom_set()

float * catmull_rom_set	(	int	n,
		float	x[],
		float	y[]
	)

References m.

◆ catmull_rom_val()

float catmull_rom_val	(	int	n,
		float	x[],
		float	xval,
		float	y[],
		float	tangents[]
	)

◆ CurveDataSample()

int CurveDataSample	(	CurveData *	curve,
		CurveSample *	sample
	)

References CT_ERROR, CT_SUCCESS, interpolate_set(), interpolate_val(), CurveData::m_anchors, CurveData::m_max_x, CurveData::m_max_y, CurveData::m_min_x, CurveData::m_min_y, CurveData::m_numAnchors, CurveSample::m_outputRes, CurveSample::m_Samples, CurveSample::m_samplingRes, CurveData::m_spline_type, CurveAnchorPoint::x, and CurveAnchorPoint::y.

Referenced by dt_draw_curve_calc_values(), get_error(), and main().

◆ d3_np_fs()

float * d3_np_fs	(	int	n,
		float	a[],
		float	b[]
	)

References curvedata_anchors_max.

Referenced by spline_cubic_set_internal().

◆ interpolate_set()

float * interpolate_set	(	int	n,
		float	x[],
		float	y[],
		unsigned int	type
	)

References spline_set, and type.

Referenced by CurveDataSample(), and dt_draw_curve_calc_value().

◆ interpolate_val()

float interpolate_val	(	int	n,
		float	x[],
		float	xval,
		float	y[],
		float	tangents[],
		unsigned int	type
	)

References spline_val, and type.

Referenced by CurveDataSample(), and dt_draw_curve_calc_value().

◆ monotone_hermite_set()

float * monotone_hermite_set	(	int	n,
		float	x[],
		float	y[]
	)

References EPSILON, and m.

◆ spline_cubic_set()

float * spline_cubic_set	(	int	n,
		float	t[],
		float	y[]
	)

References spline_cubic_set_internal().

◆ spline_cubic_set_internal()

static float * spline_cubic_set_internal	(	int	n,
		float	t[],
		float	y[],
		int	ibcbeg,
		float	ybcbeg,
		int	ibcend,
		float	ybcend
	)

static

References d3_np_fs().

Referenced by spline_cubic_set().

◆ spline_cubic_val()

float spline_cubic_val	(	int	n,
		float	t[],
		float	tval,
		float	y[],
		float	ypp[]
	)

ypval = ( y[ival+1] - y[ival] ) / h

( ypp[ival+1] / 6.0E+00 + ypp[ival] / 3.0E+00 ) * h
dt * ( ypp[ival]
dt * ( 0.5E+00 * ( ypp[ival+1] - ypp[ival] ) / h ) );

yppval = ypp[ival] + dt * ( ypp[ival+1] - ypp[ival] ) / h;

Variable Documentation

◆ curvedata_anchors_max

const int curvedata_anchors_max = 20