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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
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