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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkCubicMap_DEFINED
#define SkCubicMap_DEFINED
#include "SkPoint.h"
class SkCubicMap {
public:
void setPts(SkPoint p1, SkPoint p2);
void setPts(float x1, float y1, float x2, float y2) {
this->setPts({x1, y1}, {x2, y2});
}
SkPoint computeFromT(float t) const;
float computeYFromX(float x) const;
// experimental
float hackYFromX(float x) const;
private:
SkPoint fCoeff[4];
// x->t lookup
enum { kTableCount = 16 };
struct Rec {
float fT0;
float fDT;
float fY0;
float fDY;
};
Rec fXTable[kTableCount];
void buildXTable();
};
#endif
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