7fa1785469
- vec2 to_polar/from_cartesian tests were testing for equality rather than using an epsilon. - bound2.contains had two tests that were plain wrong. - While I'm fixing the bounds test, bound2.contains and bound3.contains probably ought to test their own min and max values for inclusion. - The implementation of mat4.look_at appears to be wrong. The final column was being set to 0,0,0,1 which comparing against other implementations does not seem to be correct. My replacement code is modeled on the method used in mat4x4_look_at() in linmath.h in GLFW, which says it's a reimplementation on the method from gluLookAt(). With this change the test passes as originally written.
181 lines
4.5 KiB
Lua
181 lines
4.5 KiB
Lua
local bound2 = require "modules.bound2"
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local vec2 = require "modules.vec2"
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local DBL_EPSILON = require("modules.constants").DBL_EPSILON
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describe("bound2:", function()
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it("creates an empty bound2", function()
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local a = bound2()
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assert.is.equal(0, a.min.x)
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assert.is.equal(0, a.min.y)
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assert.is.equal(0, a.max.x)
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assert.is.equal(0, a.max.y)
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end)
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it("creates a bound2 from vec2s", function()
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local a = bound2(vec2(1,2), vec2(4,5))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(4, a.max.x)
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assert.is.equal(5, a.max.y)
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end)
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it("creates a bound2 using new()", function()
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local a = bound2.new(vec2(1,2), vec2(4,5))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(4, a.max.x)
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assert.is.equal(5, a.max.y)
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end)
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it("creates a bound2 using at()", function()
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local a = bound2.at(vec2(4,5), vec2(1,2))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(4, a.max.x)
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assert.is.equal(5, a.max.y)
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end)
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it("clones a bound2", function()
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local a = bound2(vec2(1,2), vec2(4,5))
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local b = a:clone()
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a.max = new vec2(9,9)
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assert.is.equal(a.min, b.min)
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assert.is.not_equal(a.max, b.max)
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end)
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it("uses bound2 check()", function()
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local a = bound2(vec2(4,2), vec2(1,5)):check()
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(4, a.max.x)
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assert.is.equal(5, a.max.y)
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end)
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it("queries a bound2 size", function()
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local a = bound2(vec2(1,2), vec2(4,6))
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local v = a:size()
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local r = a:radius()
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assert.is.equal(3, v.x)
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assert.is.equal(4, v.y)
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assert.is.equal(1.5, r.x)
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assert.is.equal(2, r.y)
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end)
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it("sets a bound2 size", function()
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local a = bound2(vec2(1,2), vec2(4,5))
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local b = a:with_size(vec2(1,1))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(4, a.max.x)
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assert.is.equal(5, a.max.y)
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assert.is.equal(1, b.min.x)
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assert.is.equal(2, b.min.y)
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assert.is.equal(2, b.max.x)
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assert.is.equal(3, b.max.y)
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end)
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it("queries a bound2 center", function()
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local a = bound2(vec2(1,2), vec2(3,4))
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local v = a:center()
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assert.is.equal(2, v.x)
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assert.is.equal(3, v.y)
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end)
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it("sets a bound2 center", function()
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local a = bound2(vec2(1,2), vec2(3,4))
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local b = a:with_center(vec2(1,1))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(3, a.max.x)
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assert.is.equal(4, a.max.y)
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assert.is.equal(0, b.min.x)
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assert.is.equal(0, b.min.y)
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assert.is.equal(2, b.max.x)
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assert.is.equal(2, b.max.y)
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end)
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it("sets a bound2 size centered", function()
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local a = bound2(vec2(1,2), vec2(3,4))
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local b = a:with_size_centered(vec2(4,4))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(3, a.max.x)
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assert.is.equal(4, a.max.y)
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assert.is.equal(0, b.min.x)
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assert.is.equal(1, b.min.y)
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assert.is.equal(4, b.max.x)
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assert.is.equal(5, b.max.y)
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end)
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it("insets a bound2", function()
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local a = bound2(vec2(1,2), vec2(5,10))
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local b = a:inset(vec2(1,2))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(5, a.max.x)
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assert.is.equal(10, a.max.y)
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assert.is.equal(2, b.min.x)
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assert.is.equal(4, b.min.y)
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assert.is.equal(4, b.max.x)
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assert.is.equal(8, b.max.y)
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end)
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it("outsets a bound2", function()
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local a = bound2(vec2(1,2), vec2(5,6))
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local b = a:outset(vec2(1,2))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(5, a.max.x)
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assert.is.equal(6, a.max.y)
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assert.is.equal(0, b.min.x)
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assert.is.equal(0, b.min.y)
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assert.is.equal(6, b.max.x)
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assert.is.equal(8, b.max.y)
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end)
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it("offsets a bound2", function()
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local a = bound2(vec2(1,2), vec2(5,6))
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local b = a:offset(vec2(1,2))
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assert.is.equal(1, a.min.x)
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assert.is.equal(2, a.min.y)
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assert.is.equal(5, a.max.x)
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assert.is.equal(6, a.max.y)
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assert.is.equal(2, b.min.x)
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assert.is.equal(4, b.min.y)
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assert.is.equal(6, b.max.x)
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assert.is.equal(8, b.max.y)
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end)
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it("tests for points inside bound2", function()
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local a = bound2(vec2(1,2), vec2(4,5))
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assert.is_true(a:contains(vec2(1,2)))
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assert.is_true(a:contains(vec2(4,5)))
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assert.is_true(a:contains(vec2(2,3)))
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assert.is_not_true(a:contains(vec2(0,3)))
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assert.is_not_true(a:contains(vec2(5,3)))
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assert.is_not_true(a:contains(vec2(2,1)))
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assert.is_not_true(a:contains(vec2(2,6)))
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end)
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it("checks for bound2.zero", function()
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assert.is.equal(0, bound2.zero.min.x)
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assert.is.equal(0, bound2.zero.min.y)
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assert.is.equal(0, bound2.zero.max.x)
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assert.is.equal(0, bound2.zero.max.y)
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end)
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end)
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