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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. */ #ifndef SkPathOpsLine_DEFINED #define SkPathOpsLine_DEFINED #include "SkPathOpsPoint.h" struct SkDLine { SkDPoint fPts[2]; const SkDPoint& operator[](int n) const { SkASSERT(n >= 0 && n < 2); return fPts[n]; } SkDPoint& operator[](int n) { SkASSERT(n >= 0 && n < 2); return fPts[n]; } void set(const SkPoint pts[2]) { fPts[0] = pts[0]; fPts[1] = pts[1]; } static SkDLine SubDivide(const SkPoint a[2], double t1, double t2) { SkDLine line; line.set(a); return line.subDivide(t1, t2); } double exactPoint(const SkDPoint& xy) const; static double ExactPointH(const SkDPoint& xy, double left, double right, double y); static double ExactPointV(const SkDPoint& xy, double top, double bottom, double x); double isLeft(const SkDPoint& pt) const; double nearPoint(const SkDPoint& xy, bool* unequal) const; bool nearRay(const SkDPoint& xy) const; static double NearPointH(const SkDPoint& xy, double left, double right, double y); static double NearPointV(const SkDPoint& xy, double top, double bottom, double x); static bool NearRay(double dx1, double dy1, double dx2, double dy2); SkDPoint ptAtT(double t) const; SkDLine subDivide(double t1, double t2) const; void dump() const; private: SkDVector tangent() const { return fPts[0] - fPts[1]; } }; #endif