luanti-extended-engine-features/leef-math-cd2025
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update quat test to reflect that pow() needs unit quats

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This commit is contained in:
Colby Klein 2016-12-16 00:46:43 -08:00
parent d9108a198a
commit 9776dbbf39
1 changed files with 15 additions and 13 deletions
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28
spec/quat_spec.lua
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@ -126,10 +126,11 @@ describe("quat:", function()
end)
it("multiplies a quaternion by an exponent of 0", function()
local a = quat(2, 3, 4, 1)
local a = quat(2, 3, 4, 1):normalize()
local e = 0
local b = a:pow(e)
local c = a^e
assert.is.equal(0, b.x)
assert.is.equal(0, b.y)
assert.is.equal(0, b.z)
@ -138,27 +139,28 @@ describe("quat:", function()
end)
it("multiplies a quaternion by a positive exponent", function()
local a = quat(2, 3, 4, 1)
local e = 2
local a = quat(2, 3, 4, 1):normalize()
local e = 0.75
local b = a:pow(e)
local c = a^e
assert.is.equal( 4, b.x)
assert.is.equal( 6, b.y)
assert.is.equal( 8, b.z)
assert.is.equal(-28, b.w)
assert.is_true(utils.tolerance(-0.3204+b.x, 0.0001))
assert.is_true(utils.tolerance(-0.4805+b.y, 0.0001))
assert.is_true(utils.tolerance(-0.6407+b.z, 0.0001))
assert.is_true(utils.tolerance(-0.5059+b.w, 0.0001))
assert.is.equal( b, c)
end)
it("multiplies a quaternion by a negative exponent", function()
local a = quat(2, 3, 4, 1)
local e = -2
local a = quat(2, 3, 4, 1):normalize()
local e = -1
local b = a:pow(e)
local c = a^e
assert.is_true(utils.tolerance(0.0044+b.x, 0.0001))
assert.is_true(utils.tolerance(0.0067+b.y, 0.0001))
assert.is_true(utils.tolerance(0.0089+b.z, 0.0001))
assert.is_true(utils.tolerance(0.0311+b.w, 0.0001))
assert.is_true(utils.tolerance( 0.3651+b.x, 0.0001))
assert.is_true(utils.tolerance( 0.5477+b.y, 0.0001))
assert.is_true(utils.tolerance( 0.7303+b.z, 0.0001))
assert.is_true(utils.tolerance(-0.1826+b.w, 0.0001))
assert.is.equal(b, c)
end)