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 */
7#include "DataTypes.h"
8
9bool implicitLine(const _Line& line, double& slope, double& axisIntercept);
10int reduceOrder(const _Line& line, _Line& reduced);
11double is_left(const _Line& line, const _Point& pt);
12void sub_divide(const _Line& src, double t1, double t2, _Line& dst);
13double t_at(const _Line&, const _Point& );
14void xy_at_t(const _Line& , double t, double& x, double& y);
15_Point xy_at_t(const _Line& , double t);
16
17enum x_at_flags {
18    kFindTopMin = 1,
19    kFindTopMax = 2,
20    kFindBottomMin = 4,
21    kFindBottomMax = 8
22};
23
24void x_at(const _Point& p1, const _Point& p2, double minY, double maxY,
25        int flags, double& tMin, double& tMax);
26