| caryclark@google.com | 9e49fb6 | 2012-08-27 14:11:33 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2012 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| caryclark@google.com | 8dcf114 | 2012-07-02 20:27:02 +0000 | [diff] [blame] | 7 | #include "DataTypes.h" |
| 8 | |
| caryclark@google.com | 27accef | 2012-01-25 18:57:23 +0000 | [diff] [blame] | 9 | double cube_root(double x); |
| caryclark@google.com | c682590 | 2012-02-03 22:07:47 +0000 | [diff] [blame] | 10 | void coefficients(const double* cubic, double& A, double& B, double& C, double& D); |
| caryclark@google.com | 27accef | 2012-01-25 18:57:23 +0000 | [diff] [blame] | 11 | int cubicRoots(double A, double B, double C, double D, double t[3]); |
| caryclark@google.com | 8dcf114 | 2012-07-02 20:27:02 +0000 | [diff] [blame] | 12 | double derivativeAtT(const double* cubic, double t); |
| 13 | // competing version that should produce same results |
| 14 | double derivativeAtT_2(const double* cubic, double t); |
| 15 | void dxdy_at_t(const Cubic& , double t, double& x, double& y); |
| 16 | bool rotate(const Cubic& cubic, int zero, int index, Cubic& rotPath); |
| 17 | double secondDerivativeAtT(const double* cubic, double t); |
| 18 | void xy_at_t(const Cubic& , double t, double& x, double& y); |