gctl_tutorials/examples/geometry2d_ex.cpp

82 lines
2.9 KiB
C++
Raw Normal View History

2024-09-10 20:19:20 +08:00
/********************************************************
*
*
*
*
*
*
* Geophysical Computational Tools & Library (GCTL)
*
* Copyright (c) 2022 Yi Zhang (yizhang-geo@zju.edu.cn)
*
* GCTL is distributed under a dual licensing scheme. You can redistribute
* it and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either version 2
* of the License, or (at your option) any later version. You should have
* received a copy of the GNU Lesser General Public License along with this
* program. If not, see <http://www.gnu.org/licenses/>.
*
* If the terms and conditions of the LGPL v.2. would prevent you from using
* the GCTL, please consider the option to obtain a commercial license for a
* fee. These licenses are offered by the GCTL's original author. As a rule,
* licenses are provided "as-is", unlimited in time for a one time fee. Please
* send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget
* to include some description of your company and the realm of its activities.
* Also add information on how to contact you by electronic and paper mail.
******************************************************/
#include "gctl/core.h"
#include "gctl/geometry.h"
int main(int argc, char const *argv[])
{
gctl::point2dc a, b, c, d;
a.set(0.0, 0.0);
b.set(10.0, 0.0);
c.set(5.0, 7.0);
d.set(5.0, 5.0);
if (gctl::geometry2d::node_in_triangle(d, a, b, c))
{
std::cout << "d is in triangle" << std::endl;
}
else std::cout << "d is not in triangle" << std::endl;
d.set(5.0, 7.0);
if (gctl::geometry2d::node_in_triangle(d, a, b, c, false))
{
std::cout << "d is in triangle" << std::endl;
}
else std::cout << "d is not in triangle" << std::endl;
d.set(5.0, 8.0);
if (gctl::geometry2d::node_in_triangle(d, a, b, c))
{
std::cout << "d is in triangle" << std::endl;
}
else std::cout << "d is not in triangle" << std::endl;
std::cout << "---------------------" << std::endl;
gctl::point2dc *c2, *d2;
c2 = new gctl::point2dc;
d2 = new gctl::point2dc;
a.set(0.0, 0.0);
b.set(10.0, 0.0);
c2->set(5.0, 7.0);
d2->set(5.0, 5.0);
gctl::point2dc nor = d2->normal();
std::cout << "nor(d) = (" << nor.x << ", " << nor.y << ")" << std::endl;
gctl::point2dc e = a - b;
std::cout << "a - b = (" << e.x << ", " << e.y << ")" << std::endl;
double dist = gctl::distance(*c2, *d2);
std::cout << "dist(c, d) = " << dist << std::endl;
delete c2;
delete d2;
return 0;
}