Ported box2d_test.py

test/unit/core/box2d_test.cpp

@@ -0,0 +1,163 @@
+#include "catch.hpp"
+
+#include <iostream>
+#include <mapnik/coord.hpp>
+#include <mapnik/box2d.hpp>
+
+TEST_CASE("box2d") {
+SECTION("coord init") {
+  auto c = mapnik::coord2d(100, 100);
+
+  REQUIRE(c.x == 100);
+  REQUIRE(c.y == 100);
+}
+
+SECTION("coord multiplication") {
+  auto c = mapnik::coord2d(100, 100);
+  c *= 2;
+
+  REQUIRE(c.x == 200);
+  REQUIRE(c.y == 200);
+}
+
+SECTION("envelope init") {
+  auto e = mapnik::box2d<double>(100, 100, 200, 200);
+
+  REQUIRE(e.contains(100, 100));
+  REQUIRE(e.contains(100, 200));
+  REQUIRE(e.contains(200, 200));
+  REQUIRE(e.contains(200, 100));
+
+  REQUIRE(e.contains(e.center()));
+
+  REQUIRE(!e.contains(99.9, 99.9));
+  REQUIRE(!e.contains(99.9, 200.1));
+  REQUIRE(!e.contains(200.1, 200.1));
+  REQUIRE(!e.contains(200.1, 99.9));
+
+  REQUIRE(e.width() == 100);
+  REQUIRE(e.height() == 100);
+
+  REQUIRE(e.minx() == 100);
+  REQUIRE(e.miny() == 100);
+
+  REQUIRE(e.maxx() == 200);
+  REQUIRE(e.maxy() == 200);
+
+  REQUIRE(e[0] == 100);
+  REQUIRE(e[1] == 100);
+  REQUIRE(e[2] == 200);
+  REQUIRE(e[3] == 200);
+  REQUIRE(e[0] == e[-4]);
+  REQUIRE(e[1] == e[-3]);
+  REQUIRE(e[2] == e[-2]);
+  REQUIRE(e[3] == e[-1]);
+
+  auto c = e.center();
+
+  REQUIRE(c.x == 150);
+  REQUIRE(c.y == 150);
+}
+
+SECTION("envelope static init") {
+  auto e = mapnik::box2d<double>(100, 100, 200, 200);
+
+  mapnik::box2d<double> e1, e2, e3;
+  REQUIRE(e1.from_string("100 100 200 200"));
+  REQUIRE(e2.from_string("100,100,200,200"));
+  REQUIRE(e3.from_string("100 , 100 , 200 , 200"));
+
+  REQUIRE(e == e1);
+  REQUIRE(e == e2);
+  REQUIRE(e == e3);
+}
+
+SECTION("envelope multiplication") {
+  // no width then no impact of multiplication
+  {
+    auto a = mapnik::box2d<int>(100, 100, 100, 100);
+    a *= 5;
+
+    REQUIRE(a.minx() == 100);
+    REQUIRE(a.miny() == 100);
+    REQUIRE(a.maxx() == 100);
+    REQUIRE(a.maxy() == 100);
+  }
+
+  {
+    auto a = mapnik::box2d<double>(100.0, 100.0, 100.0, 100.0);
+    a *= 5;
+
+    REQUIRE(a.minx() == 100);
+    REQUIRE(a.miny() == 100);
+    REQUIRE(a.maxx() == 100);
+    REQUIRE(a.maxy() == 100);
+  }
+
+  {
+    auto a = mapnik::box2d<double>(100.0, 100.0, 100.001, 100.001);
+    a *= 5;
+
+    REQUIRE(std::abs(a.minx() -  99.9980) < 0.001);
+    REQUIRE(std::abs(a.miny() -  99.9980) < 0.001);
+    REQUIRE(std::abs(a.maxx() - 100.0030) < 0.001);
+    REQUIRE(std::abs(a.maxy() - 100.0030) < 0.001);
+  }
+
+  {
+    auto e = mapnik::box2d<double>(100, 100, 200, 200);
+    e *= 2;
+
+    REQUIRE(e.minx() == 50);
+    REQUIRE(e.miny() == 50);
+    REQUIRE(e.maxx() == 250);
+    REQUIRE(e.maxy() == 250);
+
+    REQUIRE(e.contains(50, 50));
+    REQUIRE(e.contains(50, 250));
+    REQUIRE(e.contains(250, 250));
+    REQUIRE(e.contains(250, 50));
+
+    REQUIRE(!e.contains(49.9, 49.9));
+    REQUIRE(!e.contains(49.9, 250.1));
+    REQUIRE(!e.contains(250.1, 250.1));
+    REQUIRE(!e.contains(250.1, 49.9));
+
+    REQUIRE(e.contains(e.center()));
+
+    REQUIRE(e.width() == 200);
+    REQUIRE(e.height() == 200);
+
+    REQUIRE(e.minx() == 50);
+    REQUIRE(e.miny() == 50);
+
+    REQUIRE(e.maxx() == 250);
+    REQUIRE(e.maxy() == 250);
+
+    auto c = e.center();
+
+    REQUIRE(c.x == 150);
+    REQUIRE(c.y == 150);
+  }
+}
+
+SECTION("envelope clipping") {
+  auto e1 = mapnik::box2d<double>(-180,-90,180,90);
+  auto e2 = mapnik::box2d<double>(-120,40,-110,48);
+  e1.clip(e2);
+  REQUIRE(e1 == e2);
+
+  // madagascar in merc
+  e1 = mapnik::box2d<double>(4772116.5490, -2744395.0631, 5765186.4203, -1609458.0673);
+  e2 = mapnik::box2d<double>(5124338.3753, -2240522.1727, 5207501.8621, -2130452.8520);
+  e1.clip(e2);
+  REQUIRE(e1 == e2);
+
+  // nz in lon/lat
+  e1 = mapnik::box2d<double>(163.8062, -47.1897, 179.3628, -33.9069);
+  e2 = mapnik::box2d<double>(173.7378, -39.6395, 174.4849, -38.9252);
+  e1.clip(e2);
+  REQUIRE(e1 == e2);
+}
+
+} // TEST_CASE