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237 lines (219 loc) · 5.47 KB
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import gg.m4
// vfmt off
pub fn test_m4() {
unsafe {
// Test Mat4
mut a := m4.Mat4{ e: [
f32(0), 1, 2, 3,
4, 5, 6, 7,
8, 9, 10, 11,
12, 13, 14, 15,
]!
}
mut b := m4.Mat4{}
mut c := m4.Mat4{}
// equal test
assert a.e == [
f32(0), 1, 2, 3,
4, 5, 6, 7,
8, 9, 10, 11,
12, 13, 14, 15,
]!
// copy test
b.copy(a)
assert a.e == b.e
// test: transpose, scale
assert b.transpose().mul_scalar(2.0).mul_scalar(0.5).transpose().e == a.e
assert b.sum_all() == 120.0
// test rows/columns set/get
for i in 0 .. 4 {
b = m4.zero_m4()
b.set_row(i, m4.Vec4{ e: [f32(1.0), 2, 3, 4]! })
assert b.get_f(0, i) == 1.0
assert b.get_f(1, i) == 2.0
assert b.get_f(2, i) == 3.0
assert b.get_f(3, i) == 4.0
// println(b)
c = m4.zero_m4()
c.set_col(i, m4.Vec4{ e: [f32(1.0), 2, 3, 4]! })
assert c.get_f(i, 0) == 1.0
assert c.get_f(i, 1) == 2.0
assert c.get_f(i, 2) == 3.0
assert c.get_f(i, 3) == 4.0
// println(c)
}
}
}
fn test_swap_col_row() {
unsafe {
// swap_col / swap_row
b := m4.Mat4{ e: [
f32(1), 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
]!
}
b.swap_col(0, 2)
assert b.e == [
f32(3), 2, 1, 4,
7, 6, 5, 8,
11, 10, 9, 12,
15, 14, 13, 16,
]!
b = m4.Mat4{ e: [
f32(1), 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
]!
}
b.swap_row(0, 2)
assert b.e == [
f32(9), 10, 11, 12,
5, 6, 7, 8,
1, 2, 3, 4,
13, 14, 15, 16,
]!
}
}
fn test_sum_sub() {
unsafe {
// test sum/sub
b := m4.unit_m4()
c := m4.unit_m4()
assert m4.sub(m4.add(b, c), b).e == m4.unit_m4().e
assert (b + c - b).e == m4.unit_m4().e
}
}
fn test_transpose() {
unsafe {
b := m4.Mat4{ e: [
f32(0), 1, 2, 3,
4, 5, 6, 7,
8, 9, 10, 11,
12, 13, 14, 15,
]!
}
assert b.transpose().transpose().e == b.e
}
}
fn test_multiplication() {
unsafe {
b := m4.Mat4{ e: [
f32(1), 0, 0, 0,
0, 2, 0, 0,
0, 0, 3, 0,
0, 0, 0, 4,
]!
}
c := m4.Mat4{ e: [
f32(1), 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
]!
}
assert (c * c).e == [
f32(90),100,110,120,
202,228,254,280,
314,356,398,440,
426,484,542,600,
]!
assert m4.mul(c, c).e == [
f32(90),100,110,120,
202,228,254,280,
314,356,398,440,
426,484,542,600,
]!
assert m4.mul(b, c).e == [
f32(1), 2, 3, 4,
10, 12, 14, 16,
27, 30, 33, 36,
52, 56, 60, 64,
]!
assert (b * c).e == [
f32(1), 2, 3, 4,
10, 12, 14, 16,
27, 30, 33, 36,
52, 56, 60, 64,
]!
assert m4.det(b) == 24
}
}
fn test_det() {
unsafe {
b := m4.Mat4{ e: [
f32(5), 6, 6, 8,
2, 2, 2, 8,
6, 6, 2, 8,
2, 3, 6, 7,
]!
}
assert m4.det(b) == -8
c := m4.Mat4{ e: [
f32(1), 8, 2, 3,
8, 2, 3, 1,
2, 3, 3, 2,
3, 1, 2, 4,
]!
}
// println("*** INVERSE ****")
// println(m4.mul(b.inverse(),b))
// println(m4.clean_small(m4.mul(c.inverse(),c)))
// println("****************")
assert m4.mul(b.inverse(), b).e == m4.unit_m4().e
assert m4.mul(c.inverse(), c).is_equal(m4.unit_m4())
}
}
fn test_vec4() {
// Test Vec4
// println("*** Vector4 ****")
assert m4.vec3(1,2,3) == m4.Vec4{[f32(1), 2, 3, 1]!}
mut v := m4.Vec4{[f32(1), 2, 3, 4]!}
assert v * v.inv() == 4
assert v.mul_scalar(1.0 / v.mod()).mod() == 1
assert v + m4.Vec4{ e: [f32(5), 6, 7, 8]! } == m4.Vec4{ e: [f32(6), 8, 10, 12]! }
assert v - m4.Vec4{ e: [f32(1), 2, 3, 4]! } == m4.Vec4{ e: [f32(0), 0, 0, 0]! }
assert v.mul_vec4(m4.Vec4{ e: [f32(2), 2, 2, 2]! }) == m4.Vec4{ e: [f32(2), 4, 6, 8]! }
assert f32_abs(v.normalize().mod() - 1) < m4.precision
v = m4.Vec4{[f32(1), 2, 3, 0]!}
assert f32_abs(v.normalize3().mod3() - 1) < m4.precision
assert f32_abs(v.normalize3().mod() - 1) < m4.precision
// cross product
// x y z
// 1 2 3 ==> -3 6 -3 0
// 4 5 6
// println(m4.Vec4{[f32(1),2,3,2]!} % m4.Vec4{[f32(4),5,6,2]!})
assert m4.Vec4{[f32(1), 2, 3, 0]!} % m4.Vec4{[f32(4), 5, 6, 0 ]!} == m4.Vec4{[ f32(-3), 6, -3, 0, ]!}
assert m4.Vec4{[f32(1), 2, 3, 13]!} % m4.Vec4{[f32(4), 5, 6, 11]!} == m4.Vec4{[ f32(-3), 6, -3, 0, ]!}
// matrix * vector
a := m4.Mat4{ e: [
f32(1), 2, 3, 4
5, 6, 7, 8
9, 10, 11, 12
13, 14, 15, 16
]!
}
assert m4.mul_vec(a, m4.Vec4{[f32(1), 2, 3, 4]!}) == m4.Vec4{[ f32(30), 70, 110,150, ]!}
// Rotation
// println("*** Rotation ****")
rotx := m4.rotate(m4.rad(-90), m4.Vec4{ e: [f32(1.0), 0, 0, 0]! }).clean()
roty := m4.rotate(m4.rad(-90), m4.Vec4{ e: [f32(0), 1.0, 0, 0]! }).clean()
rotz := m4.rotate(m4.rad(-90), m4.Vec4{ e: [f32(0), 0, 1, 0]! }).clean()
// println( rotx )
// println( roty )
// println( rotz )
// println( m4.mul_vec(rotx, m4.Vec4{e:[f32(0),0,1,0]!}).clean())
assert m4.mul_vec(roty, m4.Vec4{ e: [f32(1.0), 0.0, 0, 0]! }).clean() == m4.Vec4{ e: [f32(0), 0.0, -1, 0]! }
assert m4.mul_vec(rotz, m4.Vec4{ e: [f32(1.0), 0.0, 0, 0]! }).clean() == m4.Vec4{ e: [f32(0), 1, 0, 0]! }
assert m4.mul_vec(rotx, m4.Vec4{ e: [f32(0), 0, 1, 0]! }).clean() == m4.Vec4{ e: [f32(0), -1, 0, 0]! }
// println("****************")
}
fn test_proj() {
ort := m4.ortho(0,300,0,200,0,0)
assert m4.mul_vec(ort, m4.Vec4{[ f32(150), 100, 0, 1]!}).is_equal(m4.Vec4{[ f32(0), 0, 0, 1]!})
assert m4.mul_vec(ort, m4.Vec4{[ f32(0), 0, 0, 1]!}).is_equal(m4.Vec4{[ f32(-1), -1, 0, 1]!})
assert m4.mul_vec(ort, m4.Vec4{[ f32(300), 200, 0, 1]!}).is_equal(m4.Vec4{[ f32(1), 1, 0, 1]!})
}
// vfmt on