Prusa 2.7.2

tests/libslic3r/test_point.cpp

@@ -0,0 +1,46 @@
+
+/**
+ * Ported from xs/t/03_point.t
+ *  - it used to check ccw() but it does not exist anymore
+ *  and cross product uses doubles
+ */
+
+#include <catch2/catch.hpp>
+#include <libslic3r/Point.hpp>
+#include "test_utils.hpp"
+
+using namespace Slic3r;
+
+TEST_CASE("Nearest point", "[Point]") {
+    const Point point{10, 15};
+    const Point point2{30, 15};
+
+    const Point nearest{nearest_point({point2, Point{100, 200}}, point).first};
+    CHECK(nearest == point2);
+}
+
+TEST_CASE("Distance to line", "[Point]") {
+    const Line line{{0, 0}, {100, 0}};
+    CHECK(line.distance_to(Point{0, 0}) == Approx(0));
+    CHECK(line.distance_to(Point{100, 0}) == Approx(0));
+    CHECK(line.distance_to(Point{50, 0}) == Approx(0));
+    CHECK(line.distance_to(Point{150, 0}) == Approx(50));
+    CHECK(line.distance_to(Point{0, 50}) == Approx(50));
+    CHECK(line.distance_to(Point{50, 50}) == Approx(50));
+    CHECK(line.perp_distance_to(Point{50, 50}) == Approx(50));
+    CHECK(line.perp_distance_to(Point{150, 50}) == Approx(50));
+}
+
+TEST_CASE("Distance to diagonal line", "[Point]") {
+    const Line line{{50, 50}, {125, -25}};
+    CHECK(std::abs(line.distance_to(Point{100, 0})) == Approx(0));
+}
+
+TEST_CASE("Perp distance to line does not overflow", "[Point]") {
+    const Line line{
+        {18335846, 18335845},
+        {18335846, 1664160},
+    };
+
+    CHECK(line.distance_to(Point{1664161, 18335848}) == Approx(16671685));
+}