57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
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package mat4_test
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import (
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"testing"
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. "zworld/plugins/math/mat4"
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"zworld/plugins/math/vec3"
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. "github.com/onsi/ginkgo/v2"
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. "github.com/onsi/gomega"
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)
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func TestMat4(t *testing.T) {
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RegisterFailHandler(Fail)
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RunSpecs(t, "math/mat4")
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}
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type TransformTest struct {
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Input vec3.T
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Output vec3.T
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}
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func AssertTransforms(t *testing.T, transform T, cases []TransformTest) {
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t.Helper()
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for _, c := range cases {
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point := transform.TransformPoint(c.Input)
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if !point.ApproxEqual(c.Output) {
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t.Errorf("expected %v was %v", c.Output, point)
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}
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}
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}
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func TestOrthographicRZ(t *testing.T) {
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proj := OrthographicRZ(0, 10, 0, 10, -1, 1)
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AssertTransforms(t, proj, []TransformTest{
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{vec3.New(5, 5, 0), vec3.New(0, 0, 0.5)},
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{vec3.New(5, 5, 1), vec3.New(0, 0, 0)},
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{vec3.New(5, 5, -1), vec3.New(0, 0, 1)},
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{vec3.New(0, 0, -1), vec3.New(-1, -1, 1)},
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})
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}
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func TestPerspectiveVK(t *testing.T) {
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proj := Perspective(45, 1, 1, 100)
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AssertTransforms(t, proj, []TransformTest{
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{vec3.New(0, 0, 1), vec3.New(0, 0, 0)},
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{vec3.New(0, 0, 100), vec3.New(0, 0, 1)},
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})
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}
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var _ = Describe("LookAt (LH)", func() {
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It("correctly projects", func() {
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proj := LookAt(vec3.Zero, vec3.UnitZ, vec3.UnitY)
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Expect(proj.Forward().ApproxEqual(vec3.UnitZ)).To(BeTrue())
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})
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})
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