TEST(AngleIntervalTest, Containment) {
AngleInterval a(0, M_PI, true);
AngleInterval b(0, M_PI, false);
AngleInterval c(M_PI, 0, true);
AngleInterval d(M_PI, 0, false);
AngleInterval e = AngleInterval::create_full(M_PI, true);
EXPECT_TRUE(a.contains(1.));
EXPECT_FALSE(a.contains(5.));
EXPECT_EQ(a.extent(), M_PI);
EXPECT_FALSE(b.contains(1.));
EXPECT_TRUE(b.contains(5.));
EXPECT_EQ(b.extent(), M_PI);
EXPECT_FALSE(c.contains(1.));
EXPECT_TRUE(c.contains(5.));
EXPECT_EQ(c.extent(), M_PI);
EXPECT_TRUE(d.contains(1.));
EXPECT_FALSE(d.contains(5.));
EXPECT_EQ(d.extent(), M_PI);
EXPECT_TRUE(e.contains(1.));
EXPECT_TRUE(e.contains(5.));
EXPECT_EQ(e.extent(), 2*M_PI);
}
TEST(AngleIntervalTest, TimeAtAngle) {
Coord pi32 = (3./2.)*M_PI;
AngleInterval a(M_PI, pi32, true);
AngleInterval b(pi32, M_PI, true);
AngleInterval c(M_PI, 0, false);
AngleInterval d(M_PI/2, M_PI, false);
AngleInterval e = AngleInterval::create_full(M_PI, true);
AngleInterval f = AngleInterval::create_full(M_PI, false);
Interval unit(0, 1);
EXPECT_EQ(a.timeAtAngle(M_PI), 0);
EXPECT_EQ(a.timeAtAngle(pi32), 1);
EXPECT_EQ(a.extent(), M_PI/2);
for (Coord t = -1; t <= 2; t += 0.125) {
Coord angle = lerp(t, M_PI, pi32);
Coord ti = a.timeAtAngle(angle);
EXPECT_EQ(unit.contains(ti), a.contains(angle));
EXPECT_FLOAT_EQ(ti, t);
}
EXPECT_EQ(b.timeAtAngle(pi32), 0);
EXPECT_EQ(b.timeAtAngle(M_PI), 1);
EXPECT_EQ(b.extent(), pi32);
EXPECT_FLOAT_EQ(b.timeAtAngle(M_PI/4), 0.5);
EXPECT_FLOAT_EQ(b.timeAtAngle(0), 1./3.);
EXPECT_FLOAT_EQ(b.timeAtAngle((11./8)*M_PI), -1./12);
for (Coord t = -0.125; t <= 1.125; t += 0.0625) {
Coord angle = lerp(t, pi32, 3*M_PI);
Coord ti = b.timeAtAngle(angle);
EXPECT_EQ(unit.contains(ti), b.contains(angle));
EXPECT_FLOAT_EQ(ti, t);
}
EXPECT_EQ(c.timeAtAngle(M_PI), 0);
EXPECT_EQ(c.timeAtAngle(0), 1);
EXPECT_EQ(c.extent(), M_PI);
EXPECT_FLOAT_EQ(c.timeAtAngle(M_PI/2), 0.5);
for (Coord t = -0.25; t <= 1.25; t += 0.125) {
Coord angle = lerp(t, M_PI, 0);
Coord ti = c.timeAtAngle(angle);
EXPECT_EQ(unit.contains(ti), c.contains(angle));
EXPECT_FLOAT_EQ(ti, t);
}
EXPECT_EQ(d.timeAtAngle(M_PI/2), 0);
EXPECT_EQ(d.timeAtAngle(M_PI), 1);
EXPECT_EQ(d.extent(), pi32);
EXPECT_FLOAT_EQ(d.timeAtAngle(-M_PI/4), 0.5);
for (Coord t = -0.125; t <= 1.125; t += 0.0625) {
Coord angle = lerp(t, M_PI/2, -M_PI);
Coord ti = d.timeAtAngle(angle);
EXPECT_EQ(unit.contains(ti), d.contains(angle));
EXPECT_FLOAT_EQ(ti, t);
}
EXPECT_EQ(e.timeAtAngle(M_PI), 0);
EXPECT_EQ(e.extent(), 2*M_PI);
EXPECT_FLOAT_EQ(e.timeAtAngle(0), 0.5);
for (Coord t = 0; t < 1; t += 0.125) {
Coord angle = lerp(t, M_PI, 3*M_PI);
Coord ti = e.timeAtAngle(angle);
EXPECT_EQ(unit.contains(ti), true);
EXPECT_EQ(e.contains(angle), true);
EXPECT_FLOAT_EQ(ti, t);
}
EXPECT_EQ(f.timeAtAngle(M_PI), 0);
EXPECT_EQ(f.extent(), 2*M_PI);
EXPECT_FLOAT_EQ(e.timeAtAngle(0), 0.5);
for (Coord t = 0; t < 1; t += 0.125) {
Coord angle = lerp(t, M_PI, -M_PI);
Coord ti = f.timeAtAngle(angle);
EXPECT_EQ(unit.contains(ti), true);
EXPECT_EQ(f.contains(angle), true);
EXPECT_FLOAT_EQ(ti, t);
}
}
