/* * This file is part of the ZoneMinder Project. See AUTHORS file for Copyright information * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along * with this program. If not, see . */ #include "zm_catch2.h" #include "zm_poly.h" TEST_CASE("Polygon: default constructor") { Polygon p; REQUIRE(p.Area() == 0); REQUIRE(p.Centre() == Vector2(0, 0)); } TEST_CASE("Polygon: construct from vertices") { std::vector vertices{{{0, 0}, {6, 0}, {0, 6}}}; Polygon p(vertices); REQUIRE(p.Area() == 18); REQUIRE(p.Extent().Size() == Vector2(6, 6)); } TEST_CASE("Polygon: clipping") { // This a concave polygon in a shape resembling a "W" std::vector v = { {3, 1}, {5, 1}, {6, 3}, {7, 1}, {9, 1}, {10, 8}, {8, 8}, {7, 5}, {5, 5}, {4, 8}, {2, 8} }; Polygon p(v); REQUIRE(p.GetVertices().size() == 11); REQUIRE(p.Extent().Size() == Vector2(8, 7)); SECTION("boundary box larger than polygon") { Polygon c = p.GetClipped(Box({1, 0}, {11, 9})); REQUIRE(c.GetVertices().size() == 11); REQUIRE(c.Extent().Size() == Vector2(8, 7)); } SECTION("boundary box smaller than polygon") { Polygon c = p.GetClipped(Box({2, 4}, {10, 7})); REQUIRE(c.GetVertices().size() == 8); REQUIRE(c.Extent().Size() == Vector2(8, 3)); } }