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authorTHANOS SIOURDAKIS <siourdakisthanos@gmail.com>2021-04-18 12:16:13 +0000
committersfan5 <sfan5@live.de>2021-06-16 18:23:10 +0200
commit07e7d71bac8fc31740a3d404dc48cf05b67dfb9a (patch)
tree21a9cd8b9ee800b47dd7cdef159e585fbbe43835 /misc/minetest-icon.ico
parent873feb2619f51bd683d44cd3aa5206dd5874c5b0 (diff)
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Translated using Weblate (Greek)
Currently translated at 12.0% (164 of 1356 strings)
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0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-19 18:25:03 +0000
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_G.vector = {}
dofile("builtin/common/vector.lua")

describe("vector", function()
	describe("new()", function()
		it("constructs", function()
			assert.same({ x = 0, y = 0, z = 0 }, vector.new())
			assert.same({ x = 1, y = 2, z = 3 }, vector.new(1, 2, 3))
			assert.same({ x = 3, y = 2, z = 1 }, vector.new({ x = 3, y = 2, z = 1 }))

			local input = vector.new({ x = 3, y = 2, z = 1 })
			local output = vector.new(input)
			assert.same(input, output)
			assert.are_not.equal(input, output)
		end)

		it("throws on invalid input", function()
			assert.has.errors(function()
				vector.new({ x = 3 })
			end)

			assert.has.errors(function()
				vector.new({ d = 3 })
			end)
		end)
	end)

	it("equal()", function()
			local function assertE(a, b)
				assert.is_true(vector.equals(a, b))
			end
			local function assertNE(a, b)
				assert.is_false(vector.equals(a, b))
			end

			assertE({x = 0, y = 0, z = 0}, {x = 0, y = 0, z = 0})
			assertE({x = -1, y = 0, z = 1}, {x = -1, y = 0, z = 1})
			local a = { x = 2, y = 4, z = -10 }
			assertE(a, a)
			assertNE({x = -1, y = 0, z = 1}, a)
	end)

	it("add()", function()
		assert.same({ x = 2, y = 4, z = 6 }, vector.add(vector.new(1, 2, 3), { x = 1, y = 2, z = 3 }))
	end)

	it("offset()", function()
		assert.same({ x = 41, y = 52, z = 63 }, vector.offset(vector.new(1, 2, 3), 40, 50, 60))
	end)

	-- This function is needed because of floating point imprecision.
	local function almost_equal(a, b)
		if type(a) == "number" then
			return math.abs(a - b) < 0.00000000001
		end
		return vector.distance(a, b) < 0.000000000001
	end

	describe("rotate_around_axis()", function()
		it("rotates", function()
			assert.True(almost_equal({x = -1, y = 0, z = 0},
				vector.rotate_around_axis({x = 1, y = 0, z = 0}, {x = 0, y = 1, z = 0}, math.pi)))
			assert.True(almost_equal({x = 0, y = 1, z = 0},
				vector.rotate_around_axis({x = 0, y = 0, z = 1}, {x = 1, y = 0, z = 0}, math.pi / 2)))
			assert.True(almost_equal({x = 4, y = 1, z = 1},
				vector.rotate_around_axis({x = 4, y = 1, z = 1}, {x = 4, y = 1, z = 1}, math.pi / 6)))
		end)
		it("keeps distance to axis", function()
			local rotate1 = {x = 1, y = 3, z = 1}
			local axis1 = {x = 1, y = 3, z = 2}
			local rotated1 = vector.rotate_around_axis(rotate1, axis1, math.pi / 13)
			assert.True(almost_equal(vector.distance(axis1, rotate1), vector.distance(axis1, rotated1)))
			local rotate2 = {x = 1, y = 1, z = 3}
			local axis2 = {x = 2, y = 6, z = 100}
			local rotated2 = vector.rotate_around_axis(rotate2, axis2, math.pi / 23)
			assert.True(almost_equal(vector.distance(axis2, rotate2), vector.distance(axis2, rotated2)))
			local rotate3 = {x = 1, y = -1, z = 3}
			local axis3 = {x = 2, y = 6, z = 100}
			local rotated3 = vector.rotate_around_axis(rotate3, axis3, math.pi / 2)
			assert.True(almost_equal(vector.distance(axis3, rotate3), vector.distance(axis3, rotated3)))
		end)
		it("rotates back", function()
			local rotate1 = {x = 1, y = 3, z = 1}