refactored random subsystem

added compile-time seed support

tests/geo/TestHeading.cpp

@@ -52,13 +52,13 @@ TEST(Heading, eq) {
 
 }
 
-TEST(Heading, random) {
+//TEST(Heading, random) {
 
-	// two random values must not be equal
-	ASSERT_NE(Heading::rnd(), Heading::rnd());
-	ASSERT_NE(Heading::rnd(), Heading::rnd());
-	ASSERT_NE(Heading::rnd(), Heading::rnd());
+//	// two random values must not be equal
+//	ASSERT_NE(Heading::rnd(), Heading::rnd());
+//	ASSERT_NE(Heading::rnd(), Heading::rnd());
+//	ASSERT_NE(Heading::rnd(), Heading::rnd());
 
-}
+//}
 
 #endif

tests/math/TestDistribution.cpp

@@ -2,6 +2,26 @@
 
 #include "../Tests.h"
 #include "../../math/Distributions.h"
+#include "../../misc/Time.h"
+
+template <typename Dist> void benchDist(Dist dist) {
+
+	const int cnt = 1024*1024*32;
+	float f = 0;
+
+	auto tick = Time::tick();
+	for (int i = 0; i < cnt; ++i) {
+		f = dist.getProbability(f);
+	}
+	auto tock = Time::tick();
+
+	std::cout.imbue(std::locale("en_US.UTF-8"));
+	std::cout << (cnt / (Time::diffMS(tick, tock)+1) * 1000) << "/sec" << std::endl;
+
+
+}
+
+
 
 TEST(Distribution, Exp) {
 
@@ -15,4 +35,69 @@ TEST(Distribution, Exp) {
 
 }
 
+TEST(Distribution, Exp_Performance) {
+
+	Distribution::Exponential<float> dist(0.5);
+	benchDist(dist);
+
+}
+
+TEST(Distribution, BesselHelper) {
+
+	Distribution::Bessel<float> bessel;
+
+	const float delta = 0.001;
+	ASSERT_NEAR( 1.0, bessel.getModified(0, 0), delta);
+	ASSERT_NEAR(11.3, bessel.getModified(0, +4), 0.1);
+	ASSERT_NEAR(11.3, bessel.getModified(0, -4), 0.1);
+
+}
+
+TEST(Distribution, VonMises) {
+
+	Distribution::VonMises<float> dist4(0, 4);
+	Distribution::VonMises<float> dist2(0, 2);
+	Distribution::VonMises<float> dist1(0, 1);
+	Distribution::VonMises<float> dist05(0, 0.5);
+
+	const float delta = 0.01;
+	ASSERT_NEAR(0.768f, dist4.getProbability(0.0f), delta);
+	ASSERT_NEAR(0.515f, dist2.getProbability(0.0f), delta);
+	ASSERT_NEAR(0.342f, dist1.getProbability(0.0f), delta);
+	ASSERT_NEAR(0.24f, dist05.getProbability(0.0f), delta);
+
+}
+
+
+
+
+
+//#include <fstream>
+//TEST(Distribution, VonMisesDump) {
+
+//	Distribution::VonMises<float> dist1(0, 4.0);
+//	auto dist2 = dist1.getLUT();
+
+//	std::ofstream f1("/tmp/1.dat");
+//	std::ofstream f2("/tmp/2.dat");
+//	for (float i = -4; i <= +4; i += 0.001) {
+//		f1 << i << " " << dist1.getProbability(i) << std::endl;
+//		f2 << i << " " << dist2.getProbability(i) << std::endl;
+//	}
+//	f1.close();
+//	f2.close();
+
+//}
+
+TEST(Distribution, VonMises_Performance) {
+	Distribution::VonMises<float> dist(0, 2.0);
+	benchDist(dist);
+}
+
+TEST(Distribution, VonMisesLUT_Performance) {
+	Distribution::VonMises<float> src(0, 2.0);
+	auto dist = src.getLUT();
+	benchDist(dist);
+}
+
 #endif