/*
  Copyright (c) 2021 Alex Diener
  
  This software is provided 'as-is', without any express or implied
  warranty. In no event will the authors be held liable for any damages
  arising from the use of this software.
  
  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:
  
  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
  
  Alex Diener alex@ludobloom.com
*/

#ifndef __SplineInfo_H__
#define __SplineInfo_H__
#ifdef __cplusplus
extern "C" {
#endif

#include "gamemath/Vector2f.h"
#include <stdint.h>

#define SPLINE_DEFAULT_ITERATIONS 16

struct SplinePoint {
	Vector2f position;
	Vector2f leadingControlPoint;
	Vector2f trailingControlPoint;
};

typedef struct SplineInfo {
	unsigned int pointCount;
	struct SplinePoint * points;
	float xMax;
	float yMin;
	float yMax;
	unsigned int sampleIterations;
} SplineInfo;

SplineInfo initSplineInfo(unsigned int pointCount, struct SplinePoint * points, float xMax, float yMin, float yMax, unsigned int sampleIterations);
SplineInfo copySplineInfo(SplineInfo * spline);
bool isSplineInfoEqual(SplineInfo * spline1, SplineInfo * spline2);
uint32_t hashSplineInfo(SplineInfo * spline, uint32_t initval);
void disposeSplineInfo(SplineInfo * spline);
float sampleSplineYAtX(SplineInfo * spline, float x);

#ifdef __cplusplus
}
#endif
#endif