fix ray/obb intersection test

[blank.git] / tst / model / GeometryTest.cpp

diff --git a/tst/model/GeometryTest.cpp b/tst/model/GeometryTest.cpp
new file mode 100644 (file)
index 0000000..3776da1
--- /dev/null
+++ b/tst/model/GeometryTest.cpp
@@ -0,0 +1,41 @@
+#include "GeometryTest.hpp"
+
+#include "model/geometry.hpp"
+
+#include <limits>
+
+CPPUNIT_TEST_SUITE_REGISTRATION(blank::test::GeometryTest);
+
+
+namespace blank {
+namespace test {
+
+void GeometryTest::setUp() {
+}
+
+void GeometryTest::tearDown() {
+}
+
+
+void GeometryTest::testRayAABBIntersection() {
+       Ray ray{ { 0, 0, 0 }, { 1, 0, 0 } }; // at origin, pointing right
+       AABB box{ { -1, -1, -1 }, { 1, 1, 1 } }; // 2x2x2 cube centered around origin
+       glm::mat4 M(1); // no transformation
+
+       const float delta = std::numeric_limits<float>::epsilon();
+
+       float distance = 0;
+       glm::vec3 normal(0);
+
+       CPPUNIT_ASSERT_MESSAGE(
+               "ray at origin not intersecting box at origin",
+               Intersection(ray, box, M, &distance, &normal)
+       );
+       CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+               "intersection distance way off",
+               0.0f, distance, delta
+       );
+}
+
+}
+}