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vecn_test.go
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vecn_test.go
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// Copyright 2014 The go-gl Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package mgl32
import (
"testing"
)
func TestVecNCross(t *testing.T) {
v1 := Vec3{1, 3, 5}
v2 := Vec3{2, 4, 6}
correct := v1.Cross(v2)
correctN := NewVecNFromData(correct[:])
v1n := NewVecNFromData(v1[:])
v2n := NewVecNFromData(v2[:])
result := v1n.Cross(nil, v2n)
if !correctN.ApproxEqualThreshold(result, 1e-4) {
t.Errorf("VecN cross product is incorrect. Got: %v; Expected: %v", result, correctN)
}
}
func TestVecNDot(t *testing.T) {
v1 := Vec3{1, 3, 5}
v2 := Vec3{2, 4, 6}
correct := v1.Dot(v2)
v1n := NewVecNFromData(v1[:])
v2n := NewVecNFromData(v2[:])
result := v1n.Dot(v2n)
if !FloatEqualThreshold(correct, result, 1e-4) {
t.Errorf("Dot product doesn't work for VecN. Got: %v, Expected: %v", result, correct)
}
}
func TestVecNMul(t *testing.T) {
v1 := Vec3{1, 3, 5}
correct := v1.Mul(3)
correctN := NewVecNFromData(correct[:])
v1n := NewVecNFromData(v1[:])
result := v1n.Mul(nil, 3)
if !correctN.ApproxEqualThreshold(result, 1e-4) {
t.Errorf("VecN scalar multiplication is incorrect. Got: %v; Expected: %v", result, correctN)
}
}
func TestVecNNormalize(t *testing.T) {
v1 := Vec3{1, 3, 5}
correct := v1.Normalize()
correctN := NewVecNFromData(correct[:])
v1n := NewVecNFromData(v1[:])
result := v1n.Normalize(nil)
if !correctN.ApproxEqualThreshold(result, 1e-4) {
t.Errorf("VecN normalization is incorrect. Got: %v; Expected: %v", result, correctN)
}
}
func TestVecNAdd(t *testing.T) {
v1 := Vec3{1, 3, 5}
v2 := Vec3{2, 4, 6}
correct := v1.Add(v2)
correctN := NewVecNFromData(correct[:])
v1n := NewVecNFromData(v1[:])
v2n := NewVecNFromData(v2[:])
result := v1n.Add(nil, v2n)
if !correctN.ApproxEqualThreshold(result, 1e-4) {
t.Errorf("VecN addition is incorrect. Got: %v; Expected: %v", result, correctN)
}
}
func TestVecNSub(t *testing.T) {
v1 := Vec3{1, 3, 5}
v2 := Vec3{2, 4, 6}
correct := v1.Sub(v2)
correctN := NewVecNFromData(correct[:])
v1n := NewVecNFromData(v1[:])
v2n := NewVecNFromData(v2[:])
result := v1n.Sub(nil, v2n)
if !correctN.ApproxEqualThreshold(result, 1e-4) {
t.Errorf("VecN subtraction is incorrect. Got: %v; Expected: %v", result, correctN)
}
}
func TestVecNOuterProd(t *testing.T) {
v1 := Vec3{1, 2, 3}
v2 := Vec2{10, 11}
v1n := NewVecNFromData(v1[:])
v2n := NewVecNFromData(v2[:])
correct := v1.OuterProd2(v2)
correctN := NewMatrixFromData(correct[:], 3, 2)
result := v1n.OuterProd(nil, v2n)
if !correctN.ApproxEqualThreshold(result, 1e-4) {
t.Errorf("VecN outer product is incorrect. Got: %v; Expected: %v", result, correctN)
}
}