| /* |
| * 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" |
| |
| bool implicitLine(const _Line& line, double& slope, double& axisIntercept); |
| int reduceOrder(const _Line& line, _Line& reduced); |
| double is_left(const _Line& line, const _Point& pt); |
| void sub_divide(const _Line& src, double t1, double t2, _Line& dst); |
| double t_at(const _Line&, const _Point& ); |
| void xy_at_t(const _Line& , double t, double& x, double& y); |
| _Point xy_at_t(const _Line& , double t); |
| |
| enum x_at_flags { |
| kFindTopMin = 1, |
| kFindTopMax = 2, |
| kFindBottomMin = 4, |
| kFindBottomMax = 8 |
| }; |
| |
| void x_at(const _Point& p1, const _Point& p2, double minY, double maxY, |
| int flags, double& tMin, double& tMax); |
