Coordinate computePoint(const LineSegment& seg, double dist)
{
double dx = seg.p1.x - seg.p0.x;
double dy = seg.p1.y - seg.p0.y;
double len = seg.getLength();
Coordinate pt(dist * dx / len, dist * dy / len);
pm.makePrecise(pt);
return pt;
}
void preciseCoordinateTester(const PrecisionModel& pm,
double x1, double y1,
double x2, double y2)
{
Coordinate p(x1, y1);
pm.makePrecise(p);
Coordinate pPrecise(x2, y2);
ensure(p.equals2D(pPrecise));
}