From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Fri, 8 Dec 2017 09:58:26 +0000 (+0100)
Subject: use custom epsilog for orbit tests
X-Git-Url: http://git.localhorst.tv/?p=blobs.git;a=commitdiff_plain;h=ee77237c575f255bb04cdae48c89956aa734c811

use custom epsilog for orbit tests
---

diff --git a/tst/world/OrbitTest.cpp b/tst/world/OrbitTest.cpp
index 3becd71..12fc2b8 100644
--- a/tst/world/OrbitTest.cpp
+++ b/tst/world/OrbitTest.cpp
@@ -22,270 +22,307 @@ void OrbitTest::tearDown() {
 
 
 void OrbitTest::testDefault() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong semi-major axis on default orbit",
-		1.0, orbit.SemiMajorAxis(), std::numeric_limits<double>::epsilon()
+		1.0, orbit.SemiMajorAxis(), epsilon
 	);
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong eccentricity on default orbit",
-		0.0, orbit.Eccentricity(), std::numeric_limits<double>::epsilon()
+		0.0, orbit.Eccentricity(), epsilon
 	);
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong inclination on default orbit",
-		0.0, orbit.Inclination(), std::numeric_limits<double>::epsilon()
+		0.0, orbit.Inclination(), epsilon
 	);
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong longitude of ascending node on default orbit",
-		0.0, orbit.LongitudeAscending(), std::numeric_limits<double>::epsilon()
+		0.0, orbit.LongitudeAscending(), epsilon
 	);
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong argument of periapsis on default orbit",
-		0.0, orbit.ArgumentPeriapsis(), std::numeric_limits<double>::epsilon()
+		0.0, orbit.ArgumentPeriapsis(), epsilon
 	);
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong mean anomaly on default orbit",
-		0.0, orbit.MeanAnomaly(), std::numeric_limits<double>::epsilon()
+		0.0, orbit.MeanAnomaly(), epsilon
 	);
 
 	// reference direction is +X, so at t=0, the body should be
 	// at (sma,0,0) relative to its parent
-	glm::vec4 pos(orbit.Matrix(0.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.Matrix(0.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(1.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(1.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 90° position should be (0,0,sma) since the zero inclination
 	// reference plane is XZ and rotates counter-clockwise
-	pos = orbit.Matrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 0.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, -1.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, -1.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 180° position should be (-sma,0,0)
-	pos = orbit.Matrix(PI) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(-1.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-1.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 270° position should be (0,0,-sma)
-	pos = orbit.Matrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 1.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 1.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 360° position should be (sma,0,0), the initial position
-	pos = orbit.Matrix(PI * 2.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 2.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(1.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(1.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testSMA() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.SemiMajorAxis(2.0);
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong semi-major axis on orbit",
-		2.0, orbit.SemiMajorAxis(), std::numeric_limits<double>::epsilon()
+		2.0, orbit.SemiMajorAxis(), epsilon
 	);
 
 	// reference direction is +X, so at t=0, the body should be
 	// at (sma,0,0) relative to its parent
-	glm::vec4 pos(orbit.Matrix(0.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.Matrix(0.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(2.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(2.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 90° position should be (0,0,sma) since the zero inclination
 	// reference plane is XZ and rotates counter-clockwise
-	pos = orbit.Matrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 0.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, -2.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, -2.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 180° position should be (-sma,0,0)
-	pos = orbit.Matrix(PI) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(-2.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-2.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 270° position should be (0,0,-sma)
-	pos = orbit.Matrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 2.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 2.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 360° position should be (sma,0,0), the initial position
-	pos = orbit.Matrix(PI * 2.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 2.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(2.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(2.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testEcc() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.Eccentricity(0.5);
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong eccentricity on orbit",
-		0.5, orbit.Eccentricity(), std::numeric_limits<double>::epsilon()
+		0.5, orbit.Eccentricity(), epsilon
 	);
 
-	glm::vec4 pos(orbit.Matrix(0.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.Matrix(0.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.5f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.5, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 0.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(-0.935130834579468f, 0.0f, -0.779740869998932f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-0.93513085903671, 0.0, -0.779740887497559),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(-1.5f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-1.5, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(-0.935130834579468f, 0.0f, 0.779740869998932f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-0.93513085903671, 0.0, 0.779740887497559),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 2.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 2.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.5f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.5, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInc() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.Inclination(PI * 0.25); // 45°
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong inclination on orbit",
-		PI * 0.25, orbit.Inclination(), std::numeric_limits<double>::epsilon()
+		PI * 0.25, orbit.Inclination(), epsilon
 	);
 
 	// inclination rotates counter clockwise around +X, so at t=0 should be
 	// at (sma,0,0) relative to its parent
-	glm::vec4 pos(orbit.Matrix(0.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.Matrix(0.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(1.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(1.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 0.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.70710676908493f, -0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.707106781186548, -0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(-1.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-1.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, -0.70710676908493f, 0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, -0.707106781186548, 0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 2.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 2.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(1.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(1.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testLngAsc() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.LongitudeAscending(PI * 0.25); // 45°
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong longitude of ascending node on orbit",
-		PI * 0.25, orbit.LongitudeAscending(), std::numeric_limits<double>::epsilon()
+		PI * 0.25, orbit.LongitudeAscending(), epsilon
 	);
 	// using an inclination of 90° as well to make the rotation more apparent
 	orbit.Inclination(PI * 0.5);
 
 	// inclination rotates counter clockwise around +X, while LAN rotates it
 	// around +Y, so at t=0 should be at (sma*sin(45°),0,-sma*cos(45°))
-	glm::vec4 pos(orbit.Matrix(0.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.Matrix(0.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.70710676908493f, 0.0f, -0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.707106781186548, 0.0, -0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 0.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 1.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 1.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(-0.70710676908493f, 0.0f, 0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-0.707106781186548, 0.0, 0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, -1.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, -1.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 2.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 2.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.70710676908493f, 0.0f, -0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.707106781186548, 0.0, -0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testArgPe() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.ArgumentPeriapsis(PI * 0.25); // 45°
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong argument of periapsis node on orbit",
-		PI * 0.25, orbit.ArgumentPeriapsis(), std::numeric_limits<double>::epsilon()
+		PI * 0.25, orbit.ArgumentPeriapsis(), epsilon
 	);
 	// using an inclination of 90° as well to make the rotation more apparent
 	orbit.Inclination(PI * 0.5);
@@ -293,310 +330,359 @@ void OrbitTest::testArgPe() {
 	// inclination rotates counter clockwise around +X, while APe rotates it
 	// around +Y in the rotated coordinate system, so at t=0 should be at
 	// (sma*sin(45°),0,sma*cos(45°))
-	glm::vec4 pos(orbit.Matrix(0.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.Matrix(0.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.70710676908493f, 0.0f, 0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.707106781186548, 0.0, 0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 0.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 1.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 1.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(-0.70710676908493f, 0.0f, -0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-0.707106781186548, 0.0, -0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, -1.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, -1.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.Matrix(PI * 2.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 2.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.70710676908493f, 0.0f, 0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.707106781186548, 0.0, 0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testMnAn() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.MeanAnomaly(PI * 0.25); // 45°
 	CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
 		"wrong mean anomaly on default orbit",
-		PI * 0.25, orbit.MeanAnomaly(), std::numeric_limits<double>::epsilon()
+		PI * 0.25, orbit.MeanAnomaly(), epsilon
 	);
 
 	// mean anomaly just phase shifts the orbit
-	glm::vec4 pos(orbit.Matrix(0.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.Matrix(0.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.70710676908493f, 0.0f, -0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.707106781186548, 0.0, -0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 90° position should be (0,0,sma) since the zero inclination
 	// reference plane is XZ and rotates counter-clockwise
-	pos = orbit.Matrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 0.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(-0.70710676908493f, 0.0f, -0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-0.707106781186548, 0.0, -0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 180° position should be (-sma,0,0)
-	pos = orbit.Matrix(PI) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(-0.70710676908493f, 0.0f, 0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(-0.707106781186548, 0.0, 0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 270° position should be (0,0,-sma)
-	pos = orbit.Matrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.70710676908493f, 0.0f, 0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.707106781186548, 0.0, 0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 360° position should be (sma,0,0), the initial position
-	pos = orbit.Matrix(PI * 2.0) * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.Matrix(PI * 2.0) * glm::dvec4(0.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.70710676908493f, 0.0f, -0.70710676908493f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.707106781186548, 0.0, -0.707106781186548),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInverseDefault() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 
 	// inverse matrix should project expected orbit position back to the origin
-	glm::vec4 pos(orbit.InverseMatrix(0.0) * glm::vec4(1.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.InverseMatrix(0.0) * glm::dvec4(1.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 90° position should be (0,0,sma) since the zero inclination
 	// reference plane is XZ and rotates counter-clockwise
-	pos = orbit.InverseMatrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, -1.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 0.5) * glm::dvec4(0.0, 0.0, -1.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 180° position should be (-sma,0,0)
-	pos = orbit.InverseMatrix(PI) * glm::vec4(-1.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI) * glm::dvec4(-1.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 270° position should be (0,0,-sma)
-	pos = orbit.InverseMatrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 1.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 1.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 360° position should be (sma,0,0), the initial position
-	pos = orbit.InverseMatrix(PI * 2.0) * glm::vec4(1.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 2.0) * glm::dvec4(1.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInverseSMA() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.SemiMajorAxis(2.0);
 
 	// reference direction is +X, so at t=0, the body should be
 	// at (sma,0,0) relative to its parent
-	glm::vec4 pos(orbit.InverseMatrix(0.0) * glm::vec4(2.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.InverseMatrix(0.0) * glm::dvec4(2.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 90° position should be (0,0,sma) since the zero inclination
 	// reference plane is XZ and rotates counter-clockwise
-	pos = orbit.InverseMatrix(PI * 0.5) * glm::vec4(0.0f, 0.0f, -2.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 0.5) * glm::dvec4(0.0, 0.0, -2.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 180° position should be (-sma,0,0)
-	pos = orbit.InverseMatrix(PI) * glm::vec4(-2.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI) * glm::dvec4(-2.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 270° position should be (0,0,-sma)
-	pos = orbit.InverseMatrix(PI * 1.5) * glm::vec4(0.0f, 0.0f, 2.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 1.5) * glm::dvec4(0.0, 0.0, 2.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 360° position should be (sma,0,0), the initial position
-	pos = orbit.InverseMatrix(PI * 2.0) * glm::vec4(2.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 2.0) * glm::dvec4(2.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInverseEcc() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.Eccentricity(0.5);
 
-	glm::vec4 pos(orbit.InverseMatrix(0.0) * glm::vec4(0.5f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.InverseMatrix(0.0) * glm::dvec4(0.5, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 0.5) * glm::vec4(-0.935130834579468f, 0.0f, -0.779740869998932f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 0.5) * glm::dvec4(-0.93513085903671, 0.0, -0.779740887497559, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI) * glm::vec4(-1.5f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI) * glm::dvec4(-1.5, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 1.5) * glm::vec4(-0.935130834579468f, 0.0f, 0.779740869998932f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 1.5) * glm::dvec4(-0.93513085903671, 0.0, 0.779740887497559, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 2.0) * glm::vec4(0.5f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 2.0) * glm::dvec4(0.5, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInverseInc() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.Inclination(PI * 0.25); // 45°
 
 	// inclination rotates counter clockwise around +X, so at t=0 should be
 	// at (sma,0,0) relative to its parent
-	glm::vec4 pos(orbit.InverseMatrix(0.0) * glm::vec4(1.0f, 0.0f, 0.0f, 1.0f));
+	glm::dvec4 pos(orbit.InverseMatrix(0.0) * glm::dvec4(1.0, 0.0, 0.0, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 0.5) * glm::vec4(0.0f, 0.70710676908493f, -0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 0.5) * glm::dvec4(0.0, 0.707106781186548, -0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI) * glm::vec4(-1.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI) * glm::dvec4(-1.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 1.5) * glm::vec4(0.0f, -0.70710676908493f, 0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 1.5) * glm::dvec4(0.0, -0.707106781186548, 0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 2.0) * glm::vec4(1.0f, 0.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 2.0) * glm::dvec4(1.0, 0.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInverseLngAsc() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.LongitudeAscending(PI * 0.25); // 45°
 	orbit.Inclination(PI * 0.5);
 
 	// inclination rotates counter clockwise around +X, while LAN rotates it
 	// around +Y, so at t=0 should be at (sma*sin(45°),0,-sma*cos(45°))
-	glm::vec4 pos(orbit.InverseMatrix(0.0) * glm::vec4(0.70710676908493f, 0.0f, -0.70710676908493f, 1.0f));
+	glm::dvec4 pos(orbit.InverseMatrix(0.0) * glm::dvec4(0.707106781186548, 0.0, -0.707106781186548, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 0.5) * glm::vec4(0.0f, 1.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 0.5) * glm::dvec4(0.0, 1.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI) * glm::vec4(-0.70710676908493f, 0.0f, 0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI) * glm::dvec4(-0.707106781186548, 0.0, 0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 1.5) * glm::vec4(0.0f, -1.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 1.5) * glm::dvec4(0.0, -1.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 2.0) * glm::vec4(0.70710676908493f, 0.0f, -0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 2.0) * glm::dvec4(0.707106781186548, 0.0, -0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInverseArgPe() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.ArgumentPeriapsis(PI * 0.25); // 45°
 	orbit.Inclination(PI * 0.5);
@@ -604,85 +690,97 @@ void OrbitTest::testInverseArgPe() {
 	// inclination rotates counter clockwise around +X, while APe rotates it
 	// around +Y in the rotated coordinate system, so at t=0 should be at
 	// (sma*sin(45°),0,sma*cos(45°))
-	glm::vec4 pos(orbit.InverseMatrix(0.0) * glm::vec4(0.70710676908493f, 0.0f, 0.70710676908493f, 1.0f));
+	glm::dvec4 pos(orbit.InverseMatrix(0.0) * glm::dvec4(0.707106781186548, 0.0, 0.707106781186548, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 0.5) * glm::vec4(0.0f, 1.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 0.5) * glm::dvec4(0.0, 1.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI) * glm::vec4(-0.70710676908493f, 0.0f, -0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI) * glm::dvec4(-0.707106781186548, 0.0, -0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 1.5) * glm::vec4(0.0f, -1.0f, 0.0f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 1.5) * glm::dvec4(0.0, -1.0, 0.0, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
-	pos = orbit.InverseMatrix(PI * 2.0) * glm::vec4(0.70710676908493f, 0.0f, 0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 2.0) * glm::dvec4(0.707106781186548, 0.0, 0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 
 void OrbitTest::testInverseMnAn() {
+	constexpr double epsilon = 10.0 * std::numeric_limits<double>::epsilon();
+
 	Orbit orbit;
 	orbit.MeanAnomaly(PI * 0.25); // 45°
 
 	// mean anomaly just phase shifts the orbit
-	glm::vec4 pos(orbit.InverseMatrix(0.0) * glm::vec4(0.70710676908493f, 0.0f, -0.70710676908493f, 1.0f));
+	glm::dvec4 pos(orbit.InverseMatrix(0.0) * glm::dvec4(0.707106781186548, 0.0, -0.707106781186548, 1.0));
 	AssertEqual(
 		"wrong position at t=0",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 90° position should be (0,0,sma) since the zero inclination
 	// reference plane is XZ and rotates counter-clockwise
-	pos = orbit.InverseMatrix(PI * 0.5) * glm::vec4(-0.70710676908493f, 0.0f, -0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 0.5) * glm::dvec4(-0.707106781186548, 0.0, -0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=90°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 180° position should be (-sma,0,0)
-	pos = orbit.InverseMatrix(PI) * glm::vec4(-0.70710676908493f, 0.0f, 0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI) * glm::dvec4(-0.707106781186548, 0.0, 0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=180°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 270° position should be (0,0,-sma)
-	pos = orbit.InverseMatrix(PI * 1.5) * glm::vec4(0.70710676908493f, 0.0f, 0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 1.5) * glm::dvec4(0.707106781186548, 0.0, 0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=270°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 
 	// at 360° position should be (sma,0,0), the initial position
-	pos = orbit.InverseMatrix(PI * 2.0) * glm::vec4(0.70710676908493f, 0.0f, -0.70710676908493f, 1.0f);
+	pos = orbit.InverseMatrix(PI * 2.0) * glm::dvec4(0.707106781186548, 0.0, -0.707106781186548, 1.0);
 	AssertEqual(
 		"wrong position at t=360°",
-		glm::vec3(0.0f, 0.0f, 0.0f),
-		glm::vec3(pos) / pos.w
+		glm::dvec3(0.0, 0.0, 0.0),
+		glm::dvec3(pos) / pos.w,
+		epsilon
 	);
 }
 }