#include "test.h"
+#include <cmath>
#include "util/numeric.h"
#include "util/string.h"
void runTests(IGameDef *gamedef);
void testAngleWrapAround();
+ void testWrapDegrees_0_360_v3f();
void testLowercase();
void testTrim();
void testIsYes();
void testIsNumber();
void testIsPowerOfTwo();
void testMyround();
+ void testStringJoin();
+ void testEulerConversion();
};
static TestUtilities g_test_instance;
void TestUtilities::runTests(IGameDef *gamedef)
{
TEST(testAngleWrapAround);
+ TEST(testWrapDegrees_0_360_v3f);
TEST(testLowercase);
TEST(testTrim);
TEST(testIsYes);
TEST(testIsNumber);
TEST(testIsPowerOfTwo);
TEST(testMyround);
+ TEST(testStringJoin);
+ TEST(testEulerConversion);
}
////////////////////////////////////////////////////////////////////////////////
}
-void TestUtilities::testAngleWrapAround()
-{
- UASSERT(fabs(modulo360f(100.0) - 100.0) < 0.001);
- UASSERT(fabs(modulo360f(720.5) - 0.5) < 0.001);
- UASSERT(fabs(modulo360f(-0.5) - (-0.5)) < 0.001);
- UASSERT(fabs(modulo360f(-365.5) - (-5.5)) < 0.001);
+void TestUtilities::testAngleWrapAround() {
+ UASSERT(fabs(modulo360f(100.0) - 100.0) < 0.001);
+ UASSERT(fabs(modulo360f(720.5) - 0.5) < 0.001);
+ UASSERT(fabs(modulo360f(-0.5) - (-0.5)) < 0.001);
+ UASSERT(fabs(modulo360f(-365.5) - (-5.5)) < 0.001);
- for (float f = -720; f <= -360; f += 0.25) {
- UASSERT(fabs(modulo360f(f) - modulo360f(f + 360)) < 0.001);
- }
+ for (float f = -720; f <= -360; f += 0.25) {
+ UASSERT(std::fabs(modulo360f(f) - modulo360f(f + 360)) < 0.001);
+ }
+
+ for (float f = -1440; f <= 1440; f += 0.25) {
+ UASSERT(std::fabs(modulo360f(f) - fmodf(f, 360)) < 0.001);
+ UASSERT(std::fabs(wrapDegrees_180(f) - ref_WrapDegrees180(f)) < 0.001);
+ UASSERT(std::fabs(wrapDegrees_0_360(f) - ref_WrapDegrees_0_360(f)) < 0.001);
+ UASSERT(wrapDegrees_0_360(
+ std::fabs(wrapDegrees_180(f) - wrapDegrees_0_360(f))) < 0.001);
+ }
+
+}
- for (float f = -1440; f <= 1440; f += 0.25) {
- UASSERT(fabs(modulo360f(f) - fmodf(f, 360)) < 0.001);
- UASSERT(fabs(wrapDegrees_180(f) - ref_WrapDegrees180(f)) < 0.001);
- UASSERT(fabs(wrapDegrees_0_360(f) - ref_WrapDegrees_0_360(f)) < 0.001);
- UASSERT(wrapDegrees_0_360(fabs(wrapDegrees_180(f) - wrapDegrees_0_360(f))) < 0.001);
+void TestUtilities::testWrapDegrees_0_360_v3f()
+{
+ // only x test with little step
+ for (float x = -720.f; x <= 720; x += 0.05) {
+ v3f r = wrapDegrees_0_360_v3f(v3f(x, 0, 0));
+ UASSERT(r.X >= 0.0f && r.X < 360.0f)
+ UASSERT(r.Y == 0.0f)
+ UASSERT(r.Z == 0.0f)
+ }
+
+ // only y test with little step
+ for (float y = -720.f; y <= 720; y += 0.05) {
+ v3f r = wrapDegrees_0_360_v3f(v3f(0, y, 0));
+ UASSERT(r.X == 0.0f)
+ UASSERT(r.Y >= 0.0f && r.Y < 360.0f)
+ UASSERT(r.Z == 0.0f)
+ }
+
+ // only z test with little step
+ for (float z = -720.f; z <= 720; z += 0.05) {
+ v3f r = wrapDegrees_0_360_v3f(v3f(0, 0, z));
+ UASSERT(r.X == 0.0f)
+ UASSERT(r.Y == 0.0f)
+ UASSERT(r.Z >= 0.0f && r.Z < 360.0f)
}
+
+ // test the whole coordinate translation
+ for (float x = -720.f; x <= 720; x += 2.5) {
+ for (float y = -720.f; y <= 720; y += 2.5) {
+ for (float z = -720.f; z <= 720; z += 2.5) {
+ v3f r = wrapDegrees_0_360_v3f(v3f(x, y, z));
+ UASSERT(r.X >= 0.0f && r.X < 360.0f)
+ UASSERT(r.Y >= 0.0f && r.Y < 360.0f)
+ UASSERT(r.Z >= 0.0f && r.Z < 360.0f)
+ }
+ }
+ }
}
void TestUtilities::testLowercase()
{
UASSERT(lowercase("Foo bAR") == "foo bar");
+ UASSERT(lowercase("eeeeeeaaaaaaaaaaaààààà") == "eeeeeeaaaaaaaaaaaààààà");
+ UASSERT(lowercase("MINETEST-powa") == "minetest-powa");
}
UASSERT(myround(-6.5f) == -7);
}
+void TestUtilities::testStringJoin()
+{
+ std::vector<std::string> input;
+ UASSERT(str_join(input, ",") == "");
+
+ input.emplace_back("one");
+ UASSERT(str_join(input, ",") == "one");
+
+ input.emplace_back("two");
+ UASSERT(str_join(input, ",") == "one,two");
+
+ input.emplace_back("three");
+ UASSERT(str_join(input, ",") == "one,two,three");
+
+ input[1] = "";
+ UASSERT(str_join(input, ",") == "one,,three");
+
+ input[1] = "two";
+ UASSERT(str_join(input, " and ") == "one and two and three");
+}
+
+
+static bool within(const f32 value1, const f32 value2, const f32 precision)
+{
+ return std::fabs(value1 - value2) <= precision;
+}
+
+static bool within(const v3f &v1, const v3f &v2, const f32 precision)
+{
+ return within(v1.X, v2.X, precision) && within(v1.Y, v2.Y, precision)
+ && within(v1.Z, v2.Z, precision);
+}
+
+static bool within(const core::matrix4 &m1, const core::matrix4 &m2,
+ const f32 precision)
+{
+ const f32 *M1 = m1.pointer();
+ const f32 *M2 = m2.pointer();
+ for (int i = 0; i < 16; i++)
+ if (! within(M1[i], M2[i], precision))
+ return false;
+ return true;
+}
+
+static bool roundTripsDeg(const v3f &v, const f32 precision)
+{
+ core::matrix4 m;
+ setPitchYawRoll(m, v);
+ return within(v, getPitchYawRoll(m), precision);
+}
+
+void TestUtilities::testEulerConversion()
+{
+ // This test may fail on non-IEEE systems.
+ // Low tolerance is 4 ulp(1.0) for binary floats with 24 bit mantissa.
+ // (ulp = unit in the last place; ulp(1.0) = 2^-23).
+ const f32 tolL = 4.76837158203125e-7f;
+ // High tolerance is 2 ulp(180.0), needed for numbers in degrees.
+ // ulp(180.0) = 2^-16
+ const f32 tolH = 3.0517578125e-5f;
+ v3f v1, v2;
+ core::matrix4 m1, m2;
+ const f32 *M1 = m1.pointer();
+ const f32 *M2 = m2.pointer();
+
+ // Check that the radians version and the degrees version
+ // produce the same results. Check also that the conversion
+ // works both ways for these values.
+ v1 = v3f(M_PI/3.0, M_PI/5.0, M_PI/4.0);
+ v2 = v3f(60.0f, 36.0f, 45.0f);
+ setPitchYawRollRad(m1, v1);
+ setPitchYawRoll(m2, v2);
+ UASSERT(within(m1, m2, tolL));
+ UASSERT(within(getPitchYawRollRad(m1), v1, tolL));
+ UASSERT(within(getPitchYawRoll(m2), v2, tolH));
+
+ // Check the rotation matrix produced.
+ UASSERT(within(M1[0], 0.932004869f, tolL));
+ UASSERT(within(M1[1], 0.353553385f, tolL));
+ UASSERT(within(M1[2], 0.0797927827f, tolL));
+ UASSERT(within(M1[4], -0.21211791f, tolL));
+ UASSERT(within(M1[5], 0.353553355f, tolL));
+ UASSERT(within(M1[6], 0.911046684f, tolL));
+ UASSERT(within(M1[8], 0.293892622f, tolL));
+ UASSERT(within(M1[9], -0.866025448f, tolL));
+ UASSERT(within(M1[10], 0.404508471f, tolL));
+
+ // Check that the matrix is still homogeneous with no translation
+ UASSERT(M1[3] == 0.0f);
+ UASSERT(M1[7] == 0.0f);
+ UASSERT(M1[11] == 0.0f);
+ UASSERT(M1[12] == 0.0f);
+ UASSERT(M1[13] == 0.0f);
+ UASSERT(M1[14] == 0.0f);
+ UASSERT(M1[15] == 1.0f);
+ UASSERT(M2[3] == 0.0f);
+ UASSERT(M2[7] == 0.0f);
+ UASSERT(M2[11] == 0.0f);
+ UASSERT(M2[12] == 0.0f);
+ UASSERT(M2[13] == 0.0f);
+ UASSERT(M2[14] == 0.0f);
+ UASSERT(M2[15] == 1.0f);
+
+ // Compare to Irrlicht's results. To be comparable, the
+ // angles must come in a different order and the matrix
+ // elements to compare are different too.
+ m2.setRotationRadians(v3f(v1.Z, v1.X, v1.Y));
+ UASSERT(within(M1[0], M2[5], tolL));
+ UASSERT(within(M1[1], M2[6], tolL));
+ UASSERT(within(M1[2], M2[4], tolL));
+
+ UASSERT(within(M1[4], M2[9], tolL));
+ UASSERT(within(M1[5], M2[10], tolL));
+ UASSERT(within(M1[6], M2[8], tolL));
+
+ UASSERT(within(M1[8], M2[1], tolL));
+ UASSERT(within(M1[9], M2[2], tolL));
+ UASSERT(within(M1[10], M2[0], tolL));
+
+ // Check that Eulers that produce near gimbal-lock still round-trip
+ UASSERT(roundTripsDeg(v3f(89.9999f, 17.f, 0.f), tolH));
+ UASSERT(roundTripsDeg(v3f(89.9999f, 0.f, 19.f), tolH));
+ UASSERT(roundTripsDeg(v3f(89.9999f, 17.f, 19.f), tolH));
+
+ // Check that Eulers at an angle > 90 degrees may not round-trip...
+ v1 = v3f(90.00001f, 1.f, 1.f);
+ setPitchYawRoll(m1, v1);
+ v2 = getPitchYawRoll(m1);
+ //UASSERT(within(v1, v2, tolL)); // this is typically false
+ // ... however the rotation matrix is the same for both
+ setPitchYawRoll(m2, v2);
+ UASSERT(within(m1, m2, tolL));
+}
projects / minetest.git / blobdiff