Minetest-WorldEditAdditions/.tests/Vector3/rotate3d.test.lua

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2023-01-20 23:43:20 +00:00
local Vector3 = require("worldeditadditions_core.utils.vector3")
describe("Vector3.rotate3d", function()
it("should work with an origin of (0,0,0) X axis", function()
local origin = Vector3.new(0, 0, 0)
local point = Vector3.new(0, 1, 0)
local rotate = Vector3.new(
math.rad(180), -- x axis = yz plane
math.rad(0), -- y axis = xz plane
math.rad(0)-- z axis = xy plane
)
assert.are.same(
Vector3.new(0, -1, 0),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should work with an origin of (0,0,0) Y axis", function()
local origin = Vector3.new(0, 0, 0)
local point = Vector3.new(1, 0, 0)
local rotate = Vector3.new(
math.rad(0), -- x axis = yz plane
math.rad(180), -- y axis = xz plane
math.rad(0)-- z axis = xy plane
)
assert.are.same(
Vector3.new(-1, 0, 0),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should work with an origin of (0,0,0) Z axis", function()
local origin = Vector3.new(0, 0, 0)
local point = Vector3.new(1, 0, 0)
local rotate = Vector3.new(
math.rad(0), -- x axis = yz plane
math.rad(0), -- y axis = xz plane
math.rad(180)-- z axis = xy plane
)
assert.are.same(
Vector3.new(-1, 0, 0),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should work with a non-zero origin X axis", function()
local origin = Vector3.new(1, 1, 1)
local point = Vector3.new(0, 2, 0)
local rotate = Vector3.new(
math.rad(180), -- x axis = yz plane
math.rad(0), -- y axis = xz plane
math.rad(0)-- z axis = xy plane
)
assert.are.same(
Vector3.new(0, 0, 2),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should work with a non-zero origin Y axis", function()
local origin = Vector3.new(1, 1, 1)
local point = Vector3.new(0, 2, 0)
local rotate = Vector3.new(
math.rad(0), -- x axis = yz plane
math.rad(180), -- y axis = xz plane
math.rad(0)-- z axis = xy plane
)
assert.are.same(
Vector3.new(2, 2, 2),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should work with a non-zero origin Z axis", function()
local origin = Vector3.new(1, 1, 1)
local point = Vector3.new(0, 2, 0)
local rotate = Vector3.new(
math.rad(0), -- x axis = yz plane
math.rad(0), -- y axis = xz plane
math.rad(180)-- z axis = xy plane
)
assert.are.same(
Vector3.new(2, 0, 0),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should work with a non-zero origin Z axis -90 degrees", function()
local origin = Vector3.new(1, 1, 1)
local point = Vector3.new(0, 2, 0)
local rotate = Vector3.new(
math.rad(0), -- x axis = yz plane
math.rad(0), -- y axis = xz plane
math.rad(-90)-- z axis = xy plane
)
assert.are.same(
Vector3.new(2, 2, 0),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should work with multiple axes X Y", function()
local origin = Vector3.new(0, 0, 0)
local point = Vector3.new(0, 2, 0)
local rotate = Vector3.new(
math.rad(90), -- x axis = yz plane
math.rad(90), -- y axis = xz plane
math.rad(0)-- z axis = xy plane
)
assert.are.same(
Vector3.new(2, 0, 0),
Vector3.rotate3d(origin, point, rotate):round_dp(4)
)
end)
it("should return new Vector3 instances", function()
local origin = Vector3.new(0, 0, 0)
local point = Vector3.new(1, 0, 0)
local rotate = Vector3.new(
math.rad(0), -- x axis = yz plane
math.rad(180), -- y axis = xz plane
math.rad(0)-- z axis = xy plane
)
local result = Vector3.rotate3d(origin, point, rotate):round(4)
assert.are.same(Vector3.new(-1, 0, 0), result)
result.y = 999
assert.are.same(Vector3.new(0, 0, 0), origin)
assert.are.same(Vector3.new(1, 0, 0), point)
assert.are.same(Vector3.new(-1, 999, 0), result)
end)
end)