leef-math-cd2025/spec/bound2_spec.lua
mcclure d4f7cd1280
Merge pull request #50 from mcclure/master
:round(precision) methods for vec2, vec3, bound2, bound3
2020-05-03 12:37:58 -04:00

190 lines
4.7 KiB
Lua

local bound2 = require "modules.bound2"
local vec2 = require "modules.vec2"
local DBL_EPSILON = require("modules.constants").DBL_EPSILON
describe("bound2:", function()
it("creates an empty bound2", function()
local a = bound2()
assert.is.equal(0, a.min.x)
assert.is.equal(0, a.min.y)
assert.is.equal(0, a.max.x)
assert.is.equal(0, a.max.y)
end)
it("creates a bound2 from vec2s", function()
local a = bound2(vec2(1,2), vec2(4,5))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
end)
it("creates a bound2 using new()", function()
local a = bound2.new(vec2(1,2), vec2(4,5))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
end)
it("creates a bound2 using at()", function()
local a = bound2.at(vec2(4,5), vec2(1,2))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
end)
it("clones a bound2", function()
local a = bound2(vec2(1,2), vec2(4,5))
local b = a:clone()
a.max = vec2.new(9,9)
assert.is.equal(a.min, b.min)
assert.is.not_equal(a.max, b.max)
end)
it("uses bound2 check()", function()
local a = bound2(vec2(4,2), vec2(1,5)):check()
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
end)
it("queries a bound2 size", function()
local a = bound2(vec2(1,2), vec2(4,6))
local v = a:size()
local r = a:radius()
assert.is.equal(3, v.x)
assert.is.equal(4, v.y)
assert.is.equal(1.5, r.x)
assert.is.equal(2, r.y)
end)
it("sets a bound2 size", function()
local a = bound2(vec2(1,2), vec2(4,5))
local b = a:with_size(vec2(1,1))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
assert.is.equal(1, b.min.x)
assert.is.equal(2, b.min.y)
assert.is.equal(2, b.max.x)
assert.is.equal(3, b.max.y)
end)
it("queries a bound2 center", function()
local a = bound2(vec2(1,2), vec2(3,4))
local v = a:center()
assert.is.equal(2, v.x)
assert.is.equal(3, v.y)
end)
it("sets a bound2 center", function()
local a = bound2(vec2(1,2), vec2(3,4))
local b = a:with_center(vec2(1,1))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.max.x)
assert.is.equal(4, a.max.y)
assert.is.equal(0, b.min.x)
assert.is.equal(0, b.min.y)
assert.is.equal(2, b.max.x)
assert.is.equal(2, b.max.y)
end)
it("sets a bound2 size centered", function()
local a = bound2(vec2(1,2), vec2(3,4))
local b = a:with_size_centered(vec2(4,4))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(3, a.max.x)
assert.is.equal(4, a.max.y)
assert.is.equal(0, b.min.x)
assert.is.equal(1, b.min.y)
assert.is.equal(4, b.max.x)
assert.is.equal(5, b.max.y)
end)
it("insets a bound2", function()
local a = bound2(vec2(1,2), vec2(5,10))
local b = a:inset(vec2(1,2))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(5, a.max.x)
assert.is.equal(10, a.max.y)
assert.is.equal(2, b.min.x)
assert.is.equal(4, b.min.y)
assert.is.equal(4, b.max.x)
assert.is.equal(8, b.max.y)
end)
it("outsets a bound2", function()
local a = bound2(vec2(1,2), vec2(5,6))
local b = a:outset(vec2(1,2))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(5, a.max.x)
assert.is.equal(6, a.max.y)
assert.is.equal(0, b.min.x)
assert.is.equal(0, b.min.y)
assert.is.equal(6, b.max.x)
assert.is.equal(8, b.max.y)
end)
it("offsets a bound2", function()
local a = bound2(vec2(1,2), vec2(5,6))
local b = a:offset(vec2(1,2))
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(5, a.max.x)
assert.is.equal(6, a.max.y)
assert.is.equal(2, b.min.x)
assert.is.equal(4, b.min.y)
assert.is.equal(6, b.max.x)
assert.is.equal(8, b.max.y)
end)
it("tests for points inside bound2", function()
local a = bound2(vec2(1,2), vec2(4,5))
assert.is_true(a:contains(vec2(1,2)))
assert.is_true(a:contains(vec2(4,5)))
assert.is_true(a:contains(vec2(2,3)))
assert.is_not_true(a:contains(vec2(0,3)))
assert.is_not_true(a:contains(vec2(5,3)))
assert.is_not_true(a:contains(vec2(2,1)))
assert.is_not_true(a:contains(vec2(2,6)))
end)
it("rounds a bound2", function()
local a = bound2(vec2(1.1,1.9), vec2(3.9,5.1)):round()
assert.is.equal(1, a.min.x)
assert.is.equal(2, a.min.y)
assert.is.equal(4, a.max.x)
assert.is.equal(5, a.max.y)
end)
it("checks for bound2.zero", function()
assert.is.equal(0, bound2.zero.min.x)
assert.is.equal(0, bound2.zero.min.y)
assert.is.equal(0, bound2.zero.max.x)
assert.is.equal(0, bound2.zero.max.y)
end)
end)