leef-math-cd2025/spec/bound3_spec.lua
mcc e3f817bf7e extend(vec) and extend_bound(bound) for bounds
expands bounds to cover new points
2019-11-30 01:24:48 -05:00

256 lines
6.8 KiB
Lua

local bound3 = require "modules.bound3"
local vec3 = require "modules.vec3"
local DBL_EPSILON = require("modules.constants").DBL_EPSILON
describe("bound3:", function()
it("creates an empty bound3", function()
local a = bound3()
assert.is.equal(0, a.min.x)
assert.is.equal(0, a.min.y)
assert.is.equal(0, a.min.z)
assert.is.equal(0, a.max.x)
assert.is.equal(0, a.max.y)
assert.is.equal(0, a.max.z)
end)
it("creates a bound3 from vec3s", function()
local a = bound3(vec3(1,2,3), vec3(4,5,6))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
assert.is.equal(6, a.max.z)
end)
it("creates a bound3 using new()", function()
local a = bound3.new(vec3(1,2,3), vec3(4,5,6))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
assert.is.equal(6, a.max.z)
end)
it("creates a bound3 using at()", function()
local a = bound3.at(vec3(4,5,6), vec3(1,2,3))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
assert.is.equal(6, a.max.z)
end)
it("clones a bound3", function()
local a = bound3(vec3(1,2,3), vec3(4,5,6))
local b = a:clone()
a.max = new vec3(9,9,9)
assert.is.equal(a.min, b.min)
assert.is.not_equal(a.max, b.max)
end)
it("uses bound3 check()", function()
local a = bound3(vec3(4,2,6), vec3(1,5,3)):check()
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
assert.is.equal(6, a.max.z)
end)
it("queries a bound3 size", function()
local a = bound3(vec3(1,2,3), vec3(4,6,8))
local v = a:size()
local r = a:radius()
assert.is.equal(3, v.x)
assert.is.equal(4, v.y)
assert.is.equal(5, v.z)
assert.is.equal(1.5, r.x)
assert.is.equal(2, r.y)
assert.is.equal(2.5, r.z)
end)
it("sets a bound3 size", function()
local a = bound3(vec3(1,2,3), vec3(4,5,6))
local b = a:with_size(vec3(1,1,1))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
assert.is.equal(6, a.max.z)
assert.is.equal(1, b.min.x)
assert.is.equal(2, b.min.y)
assert.is.equal(3, b.min.z)
assert.is.equal(2, b.max.x)
assert.is.equal(3, b.max.y)
assert.is.equal(4, b.max.z)
end)
it("queries a bound3 center", function()
local a = bound3(vec3(1,2,3), vec3(3,4,5))
local v = a:center()
assert.is.equal(2, v.x)
assert.is.equal(3, v.y)
assert.is.equal(4, v.z)
end)
it("sets a bound3 center", function()
local a = bound3(vec3(1,2,3), vec3(3,4,5))
local b = a:with_center(vec3(1,1,1))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(3, a.max.x)
assert.is.equal(4, a.max.y)
assert.is.equal(5, a.max.z)
assert.is.equal(0, b.min.x)
assert.is.equal(0, b.min.y)
assert.is.equal(0, b.min.z)
assert.is.equal(2, b.max.x)
assert.is.equal(2, b.max.y)
assert.is.equal(2, b.max.z)
end)
it("sets a bound3 size centered", function()
local a = bound3(vec3(1,2,3), vec3(3,4,5))
local b = a:with_size_centered(vec3(4,4,4))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(3, a.max.x)
assert.is.equal(4, a.max.y)
assert.is.equal(5, a.max.z)
assert.is.equal(0, b.min.x)
assert.is.equal(1, b.min.y)
assert.is.equal(2, b.min.z)
assert.is.equal(4, b.max.x)
assert.is.equal(5, b.max.y)
assert.is.equal(6, b.max.z)
end)
it("insets a bound3", function()
local a = bound3(vec3(1,2,3), vec3(5,10,11))
local b = a:inset(vec3(1,2,3))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(5, a.max.x)
assert.is.equal(10, a.max.y)
assert.is.equal(11, a.max.z)
assert.is.equal(2, b.min.x)
assert.is.equal(4, b.min.y)
assert.is.equal(6, b.min.z)
assert.is.equal(4, b.max.x)
assert.is.equal(8, b.max.y)
assert.is.equal(8, b.max.z)
end)
it("outsets a bound3", function()
local a = bound3(vec3(1,2,3), vec3(5,6,7))
local b = a:outset(vec3(1,2,3))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(5, a.max.x)
assert.is.equal(6, a.max.y)
assert.is.equal(7, a.max.z)
assert.is.equal(0, b.min.x)
assert.is.equal(0, b.min.y)
assert.is.equal(0, b.min.z)
assert.is.equal(6, b.max.x)
assert.is.equal(8, b.max.y)
assert.is.equal(10, b.max.z)
end)
it("offsets a bound3", function()
local a = bound3(vec3(1,2,3), vec3(5,6,7))
local b = a:offset(vec3(1,2,3))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.min.z)
assert.is.equal(5, a.max.x)
assert.is.equal(6, a.max.y)
assert.is.equal(7, a.max.z)
assert.is.equal(2, b.min.x)
assert.is.equal(4, b.min.y)
assert.is.equal(6, b.min.z)
assert.is.equal(6, b.max.x)
assert.is.equal(8, b.max.y)
assert.is.equal(10, b.max.z)
end)
it("tests for points inside bound3", function()
local a = bound3(vec3(1,2,3), vec3(4,5,6))
assert.is_true(a:contains(vec3(2,3,4)))
assert.is_not_true(a:contains(vec3(0,3,4)))
assert.is_not_true(a:contains(vec3(5,3,4)))
assert.is_not_true(a:contains(vec3(2,1,4)))
assert.is_not_true(a:contains(vec3(2,6,4)))
assert.is_not_true(a:contains(vec3(2,3,2)))
assert.is_not_true(a:contains(vec3(2,3,7)))
end)
it("extends a bound3 with a point", function()
local min = vec3(1,2,6)
local max = vec3(4,5,9)
local downright = vec3(8,8,10)
local downleft = vec3(-4,8,10)
local top = vec3(2, 0, 7)
local a = bound3(min, max)
local temp
temp = a:extend(downright)
assert.is_true(a.min == min and a.max == max)
assert.is_true(temp.min == min and temp.max == downright)
temp = a:extend(downleft)
assert.is_true(temp.min == vec3(-4,2,6) and temp.max == vec3(4,8,10))
temp = a:extend(top)
assert.is_true(temp.min == vec3(1,0,6) and temp.max == max)
end)
it("extends a bound with another bound", function()
local min = vec3(1,2,3)
local max = vec3(4,5,6)
local leftexpand = bound3.new(vec3(0,0,4), vec3(1.5,6,5))
local rightexpand = bound3.new(vec3(1.5,0,1), vec3(5,6,7))
local a = bound3(min, max)
local temp
temp = a:extend_bound(leftexpand)
assert.is_equal(temp.min, vec3(0,0,3))
assert.is_equal(temp.max, vec3(4,6,6))
temp = temp:extend_bound(rightexpand)
assert.is_equal(temp.min, vec3(0,0,1))
assert.is_equal(temp.max, vec3(5,6,7))
end)
it("checks for bound3.zero", function()
assert.is.equal(0, bound3.zero.min.x)
assert.is.equal(0, bound3.zero.min.y)
assert.is.equal(0, bound3.zero.min.z)
assert.is.equal(0, bound3.zero.max.x)
assert.is.equal(0, bound3.zero.max.y)
assert.is.equal(0, bound3.zero.max.z)
end)
end)