func TestIntersectOverlappingTriangles(t *testing.T) {
meshData := []byte(`{
"faces": [
{
"material": 2,
"normal": [
0.5816099047660828,
-0.6875652074813843,
-0.4347230792045593
],
"vertices": [
0,
1,
2
]
},
{
"material": 2,
"normal": [
0.3495648205280304,
0.43769627809524536,
-0.8283877968788147
],
"vertices": [
3,
4,
5
]
}
],
"vertices": [
{
"coordinates": [
0.9402992725372314,
0.2813374996185303,
-1.3253726959228516
],
"normal": [
0.5815912485122681,
-0.6875514984130859,
-0.4347056448459625
]
},
{
"coordinates": [
3.748452663421631,
-0.38281798362731934,
3.482056140899658
],
"normal": [
0.5815912485122681,
-0.6875514984130859,
-0.4347056448459625
]
},
{
"coordinates": [
-2.6538453102111816,
-3.7354795932769775,
0.21913623809814453
],
"normal": [
0.5815912485122681,
-0.6875514984130859,
-0.4347056448459625
]
},
{
"coordinates": [
-1.213113784790039,
-1.5030741691589355,
-0.6865041255950928
],
"normal": [
0.3495590090751648,
0.4376659393310547,
-0.8283638954162598
]
},
{
"coordinates": [
1.2393922805786133,
2.453542709350586,
2.438972234725952
],
"normal": [
0.3495590090751648,
0.4376659393310547,
-0.8283638954162598
]
},
{
"coordinates": [
3.4325077533721924,
-4.627256870269775,
-0.3768632411956787
],
"normal": [
0.3495590090751648,
0.4376659393310547,
-0.8283638954162598
]
}
]
}`)
cameraData := []byte(`{
"bottom_left": [
4.3385910987854,
-7.2264556884765625,
5.38138484954834
],
"bottom_right": [
4.4941935539245605,
-7.130411148071289,
5.38138484954834
],
"focus": [
4.4919233322143555,
-7.300802230834961,
5.529593467712402
],
"top_left": [
4.310408115386963,
-7.180796146392822,
5.469137668609619
],
"top_right": [
4.466011047363281,
-7.084752082824707,
5.469137668609619
],
"type": "pinhole"
}`)
mesh := &Mesh{}
err := json.Unmarshal(meshData, &mesh)
if err != nil {
t.Fatalf("Error reading json: %s\n", err)
}
mesh.Init()
camera := &camera.PinholeCamera{}
err = json.Unmarshal(cameraData, &camera)
if err != nil {
t.Fatalf("Error reading json: %s\n", err)
}
ray := camera.ShootRay(590.0/800.0, 195.0/450.0)
intersection := mesh.Intersect(ray)
if intersection == nil {
t.Fatal("Intersection shouldn't be nil")
}
if intersection.Material != 2 {
t.Error("Intersected wrong triangle")
}
}
func TestIntersectWeirdTriangle(t *testing.T) {
meshData := []byte(`{
"faces": [
{
"material": 0,
"normal": [
0.487057089805603,
-0.5614719390869141,
-0.6689728498458862
],
"vertices": [
0,
1,
2
]
},
{
"material": 2,
"normal": [
0.487057089805603,
-0.5614718198776245,
-0.6689728498458862
],
"vertices": [
3,
4,
5
]
}
],
"vertices": [
{
"coordinates": [
0.7013661861419678,
0.511317253112793,
-1.7721754312515259
],
"normal": [
0.48704490065574646,
-0.5614489912986755,
-0.6689656972885132
]
},
{
"coordinates": [
4.5777506828308105,
-0.723259449005127,
2.086278200149536
],
"normal": [
0.48704490065574646,
-0.5614489912986755,
-0.6689656972885132
]
},
{
"coordinates": [
-2.290945529937744,
-3.9611659049987793,
-0.19700384140014648
],
"normal": [
0.48704490065574646,
-0.5614489912986755,
-0.6689656972885132
]
},
{
"coordinates": [
-0.18452918529510498,
1.7407333850860596,
0.6997585296630859
],
"normal": [
0.48704490065574646,
-0.5614489912986755,
-0.6689656972885132
]
},
{
"coordinates": [
3.6918554306030273,
0.5061566829681396,
4.5582122802734375
],
"normal": [
0.48704490065574646,
-0.5614489912986755,
-0.6689656972885132
]
},
{
"coordinates": [
-3.1768407821655273,
-2.7317497730255127,
2.274930000305176
],
"normal": [
0.48704490065574646,
-0.5614489912986755,
-0.6689656972885132
]
}
]
}`)
cameraData := []byte(`{
"bottom_left": [
4.3385910987854,
-7.2264556884765625,
5.38138484954834
],
"bottom_right": [
4.4941935539245605,
-7.130411148071289,
5.38138484954834
],
"focus": [
4.4919233322143555,
-7.300802230834961,
5.529593467712402
],
"top_left": [
4.310408115386963,
-7.180796146392822,
5.469137668609619
],
"top_right": [
4.466011047363281,
-7.084752082824707,
5.469137668609619
],
"type": "pinhole"
}`)
mesh := &Mesh{}
err := json.Unmarshal(meshData, &mesh)
if err != nil {
t.Fatalf("Error reading json: %s\n", err)
}
mesh.Init()
camera := &camera.PinholeCamera{}
err = json.Unmarshal(cameraData, &camera)
if err != nil {
t.Fatalf("Error reading json: %s\n", err)
}
ray := camera.ShootRay(180.0/800.0, 355.0/450.0)
intersection := mesh.Intersect(ray)
if intersection == nil {
t.Fatal("Intersection shouldn't be nil")
}
if intersection.Material != 0 {
t.Error("Intersected wrong triangle")
}
}