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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "DataTypes.h"
void dxdy_at_t(const Quadratic& , double t, double& x, double& y);
/* Parameterization form, given A*t*t + 2*B*t*(1-t) + C*(1-t)*(1-t)
*
* a = A - 2*B + C
* b = 2*B - 2*C
* c = C
*/
inline void set_abc(const double* quad, double& a, double& b, double& c) {
a = quad[0]; // a = A
b = 2 * quad[2]; // b = 2*B
c = quad[4]; // c = C
b -= c; // b = 2*B - C
a -= b; // a = A - 2*B + C
b -= c; // b = 2*B - 2*C
}
int quadraticRoots(double A, double B, double C, double t[2]);
void xy_at_t(const Quadratic& , double t, double& x, double& y);
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