fix failing tests

Author: Jannik-Hm

pkg/MeshTypes/triangle.go

@@ -13,5 +13,5 @@ func (t *Triangle) Normal() Vector {
 }
 
 func (obj *Triangle) Copy() Triangle {
-	return Triangle{V0: obj.V0, V1: obj.V1, V2: obj.V2}
+	return Triangle{V0: obj.V0.Copy(), V1: obj.V1.Copy(), V2: obj.V2.Copy()}
 }

tests/MeshTypes/mesh_test.go

@@ -81,7 +81,8 @@ func TestRotateAndTranslate(t *testing.T) {
 	result := a.Copy()
 	result.RotateAndTranslate(translationMatrix)
 	want := a.Copy()
-	for _, triangle := range want.Triangles {
+	for triangle_id := range want.Triangles {
+		triangle := &want.Triangles[triangle_id]
 		triangle.V0.Position = translationMatrix.MulPosition(triangle.V0.Position) // safe to use as func is tested in another place
 		triangle.V1.Position = translationMatrix.MulPosition(triangle.V1.Position)
 		triangle.V2.Position = translationMatrix.MulPosition(triangle.V2.Position)

tests/MeshTypes/triangle_test.go

@@ -27,7 +27,7 @@ func TestTriangleCopy(t *testing.T) {
 		V2: MeshTypes.Vertex{Position: MeshTypes.Vector{X: 13, Y: 14, Z: 15}, Normal: &MeshTypes.Vector{X: 16, Y: 17, Z: 18}},
 	}
 	copy := a.Copy()
-	if !(reflect.DeepEqual(copy, a) && a.V0 != copy.V0 && a.V1 != copy.V1 && a.V2 != copy.V2) {
+	if !(reflect.DeepEqual(copy, a) && a.V0.Normal != copy.V0.Normal && a.V1.Normal != copy.V1.Normal && a.V2.Normal != copy.V2.Normal) {
 		t.Error("Triangle Copy() returned value does not match expected value")
 	}
 }