imported from "final" folder

.pio/libdeps/esp01_1m/FastLED/tests/test_point.cpp

@@ -0,0 +1,46 @@
+// g++ --std=c++11 test.cpp
+
+#include "test.h"
+#include "fl/geometry.h"
+
+
+using namespace fl;
+
+
+#define REQUIRE_APPROX(a, b, tolerance) \
+    do { \
+        if (fabs((a - b)) > (tolerance)) { \
+            std::cerr << "REQUIRE_APPROX failed: " << #a << " = " << (a) \
+                      << ", " << #b << " = " << (b) \
+                      << ", tolerance = " << (tolerance) << std::endl; \
+            exit(1); \
+        } \
+    } while (0)
+
+
+TEST_CASE("0 is 0 distance from diagonal line through the center") {
+    line_xy<float> line(-100, -100, 100, 100);
+    vec2<float> p(0, 0);
+    vec2<float> projected;
+    float dist = line.distance_to(p, &projected);
+    REQUIRE_APPROX(projected.x, 0.0f, 0.001f);
+    REQUIRE_APPROX(projected.y, 0.0f, 0.001f);
+    REQUIRE_APPROX(dist, 0.0f, 0.001f);
+}
+
+
+TEST_CASE("point closest to line") {
+    line_xy<float> line(-100, -100, 100, 100);
+
+    vec2<float> p(50, 0);
+    vec2<float> projected;
+
+    float dist = line.distance_to(p, &projected);
+
+    // The closest point should be (25, 25)
+    REQUIRE_APPROX(projected.x, 25.0f, 0.001f);
+    REQUIRE_APPROX(projected.y, 25.0f, 0.001f);
+
+    // Distance should be sqrt((50-25)^2 + (0-25)^2) = sqrt(1250) ≈ 35.355
+    REQUIRE_APPROX(dist, 35.355f, 0.001f);
+}