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