本文整理汇总了C++中Point2D::to_string方法的典型用法代码示例。如果您正苦于以下问题：C++ Point2D::to_string方法的具体用法？C++ Point2D::to_string怎么用？C++ Point2D::to_string使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Point2D的用法示例。
在下文中一共展示了Point2D::to_string方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: test_point_at_fraction
int test_point_at_fraction()
{
Trajectory2D test_trajectory;
TrajectoryPoint2D points[3];
points[0][0] = 0;
points[0][1] = 0;
points[0].set_object_id("test");
points[0].set_timestamp(tracktable::time_from_string("2010-01-01 00:00:00"));
points[1][0] = 4;
points[1][1] = 1;
points[1].set_object_id("test");
points[1].set_timestamp(tracktable::time_from_string("2010-01-01 02:00:00"));
points[2][0] = 8;
points[2][1] = 0;
points[2].set_object_id("test");
points[2].set_timestamp(tracktable::time_from_string("2010-01-01 04:00:00"));
test_trajectory.push_back(points[0]);
test_trajectory.push_back(points[1]);
test_trajectory.push_back(points[2]);
int error_count = 0;
Point2D halfway = tracktable::point_at_fraction(test_trajectory, 0.5);
if (halfway != points[1])
{
std::cout << "ERROR: Expected halfway point to return exactly the second point.\n";
std::cout << "Expected point: " << points[1].to_string() << "\n";
std::cout << "Got point: " << halfway.to_string() << "\n";
++error_count;
}
Point2D one_quarter = tracktable::point_at_fraction(test_trajectory, 0.25);
if (!(tracktable::almost_equal(one_quarter[0], 2.0) &&
tracktable::almost_equal(one_quarter[1], 0.5)))
{
std::cout << "ERROR: Expected one-quarter point to be at (2, 0.5). Instead it is at ("
<< one_quarter[0] << ", " << one_quarter[1]
<< ").\n";
++error_count;
}
return error_count;
}