#include "rand/GaloisLFSR.hpp"
#include "rand/SimplexNoise.hpp"
+#include "rand/WorleyNoise.hpp"
#include <cstdint>
#include <string>
"unexpected value #18 from RNG",
uint16_t(0xB000), value
);
- random(value);
+ value = random.Next<uint16_t>();
CPPUNIT_ASSERT_EQUAL_MESSAGE(
- "unexpected value #19 from RNG",
+ "unexpected value #19 from RNG (using Next())",
uint16_t(0x0B0B), value
);
random(value);
"unexpected value #25 from RNG",
uint16_t(0x0000), value
);
- random(value);
+ value = random.Next<uint16_t>();
CPPUNIT_ASSERT_EQUAL_MESSAGE(
- "unexpected value #26 from RNG",
+ "unexpected value #26 from RNG (using Next())",
uint16_t(0xC970), value
);
random(value);
"RNG with seeds 0 and 1 differ",
value, value1
);
+
+ GaloisLFSR random_bool(0);
+ bool value_bool;
+ for (int i = 0; i < (16 * 32); ++i) {
+ random_bool(value_bool);
+ }
+ CPPUNIT_ASSERT_EQUAL_MESSAGE(
+ "unexpected result for bool",
+ false, value_bool
+ );
+
+ GaloisLFSR random8(0);
+ uint8_t value8;
+ for (int i = 0; i < 31; ++i) {
+ random8(value8);
+ }
+ CPPUNIT_ASSERT_EQUAL_MESSAGE(
+ "unexpected result for uint8",
+ uint8_t(0x10), value8
+ );
+
+ GaloisLFSR random32(0);
+ uint32_t value32;
+ for (int i = 0; i < 16; ++i) {
+ random32(value32);
+ }
+ CPPUNIT_ASSERT_EQUAL_MESSAGE(
+ "unexpected result for uint32",
+ uint32_t(0xB0000000), value32
+ );
}
void StabilityTest::testSimplex() {
Assert(noise, glm::vec3(-1.0f, -1.0f, -1.0f), 0.0f);
}
+void StabilityTest::testWorley() {
+ WorleyNoise noise(0);
+
+ Assert(noise, glm::vec3(0.0f, 0.0f, 0.0f), -0.117765009403229f);
+ Assert(noise, glm::vec3(0.0f, 0.0f, 1.0f), -0.209876894950867f);
+ Assert(noise, glm::vec3(0.0f, 1.0f, 0.0f), -0.290086328983307f);
+ Assert(noise, glm::vec3(0.0f, 1.0f, 1.0f), -0.332393705844879f);
+ Assert(noise, glm::vec3(1.0f, 0.0f, 0.0f), -0.621925830841064f);
+ Assert(noise, glm::vec3(1.0f, 0.0f, 1.0f), -0.338455379009247f);
+ Assert(noise, glm::vec3(1.0f, 1.0f, 0.0f), -0.386664032936096f);
+ Assert(noise, glm::vec3(1.0f, 1.0f, 1.0f), -0.533940434455872f);
+
+ Assert(noise, glm::vec3( 0.0f, 0.0f, -1.0f), -0.425480604171753f);
+ Assert(noise, glm::vec3( 0.0f, -1.0f, 0.0f), -0.189745843410492f);
+ Assert(noise, glm::vec3( 0.0f, -1.0f, -1.0f), -0.30408102273941f);
+ Assert(noise, glm::vec3(-1.0f, 0.0f, 0.0f), -0.618566155433655f);
+ Assert(noise, glm::vec3(-1.0f, 0.0f, -1.0f), -0.060045599937439f);
+ Assert(noise, glm::vec3(-1.0f, -1.0f, 0.0f), -0.366827547550201f);
+ Assert(noise, glm::vec3(-1.0f, -1.0f, -1.0f), -0.575981974601746f);
+}
+
void StabilityTest::Assert(
const SimplexNoise &noise,
const glm::vec3 &position,
);
}
+void StabilityTest::Assert(
+ const WorleyNoise &noise,
+ const glm::vec3 &position,
+ float expected
+) {
+ stringstream msg;
+ msg << "unexpected worley noise value at " << position;
+ CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+ msg.str(),
+ expected, noise(position), numeric_limits<float>::epsilon()
+ );
+}
+
}
}