void FixedUpdate()
{
GameObject player = GameObject.Find("Main Camera");
GameObject wall = GameObject.Find("600Cell");
Vector4 p;
wall.GetComponent <MeshColliderSpherical>().ClosestPoint(player.GetComponent <TransformSpherical>().position, out p);
GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo((R4)p);
}
void Start()
{
Renderer[] rs = GetComponentsInChildren <Renderer>();
rs[0].material.color = new Color(0.2f, 0.2f, 0.2f); // 1
rs[1].material.color = Color.red; // i
rs[2].material.color = Color.yellow; // j
rs[3].material.color = Color.blue; // k
rs[4].material.color = Color.magenta; // -1
rs[5].material.color = new Color(1f, 0.5f, 0f, 1f); // -i
rs[6].material.color = Color.white; // -j
rs[7].material.color = Color.green; // -k
rs[0].GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo(new Quaternion(0, 0, 0, 1));
rs[1].GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo(new Quaternion(1, 0, 0, 0));
rs[2].GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo(new Quaternion(0, 1, 0, 0));
rs[3].GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo(new Quaternion(0, 0, 1, 0));
rs[4].GetComponent <TransformSpherical>().localToWorld = new Rot4(new R4(0, 0, 0, -1), new R4(0, 0, 0, 1));
rs[5].GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo(new Quaternion(-1, 0, 0, 0));
rs[6].GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo(new Quaternion(0, -1, 0, 0));
rs[7].GetComponent <TransformSpherical>().localToWorld = Rot4.StraightTo(new Quaternion(0, 0, -1, 0));
}
void Start()
{
MeshFilter mf = GetComponent <MeshFilter>();
Mesh mesh = mf.mesh;
Vector3[] vertices = mesh.vertices;
Vector3[] normals = mesh.normals;
int[] indices = mesh.triangles;
List <Vector4> newPos = new List <Vector4>();
List <Vector4> newNor = new List <Vector4>();
if (normals.Length < vertices.Length)
{
mesh.RecalculateNormals();
normals = mesh.normals;
}
if (recenter)
{
Vector3 center = Vector3.zero;
foreach (Vector3 v in vertices)
{
center += v;
}
center /= vertices.Length;
for (int i = 0; i < vertices.Length; i++)
{
vertices[i] -= center;
}
}
// lol I just realized I wrote this using stereographic projection for normals instead of exponential projection
// they're approximately the same for small models so we'll leave it for now
for (int i = 0; i < vertices.Length; i++)
{
Vector3 pos = vertices[i];
Vector3 nor = normals[i];
float len = pos.magnitude;
float s = Mathf.Sin(len / Globals.radius * scale);
Quaternion q = new Quaternion(pos.x * s / len, pos.y * s / len, pos.z * s / len, Mathf.Cos(len / Globals.radius * scale)); // position in curved space
Vector4 n = Rot4.StraightTo(q) * new Vector4(nor.x, nor.y, nor.z, 0f);
//Quaternion p = new Quaternion(n.x, n.y, n.z, n.w);
//Quaternion pqi = p * Quaternion.Inverse(q);
//Quaternion l = Quaternion.LookRotation(new Vector3(pqi.x, pqi.y, pqi.z));
//Quaternion r = Quaternion.Inverse(l) * q;
newPos.Add((R4)q);
newNor.Add(n);
}
// flip indices because normal video game space has opossite orientation of my space I think
for (int i = 0; i < indices.Length; i += 3)
{
int temp = indices[i];
indices[i] = indices[i + 1];
indices[i + 1] = temp;
}
mesh.triangles = indices;
mesh.SetUVs(1, newPos);
mesh.SetUVs(2, newNor);
}