private void InitParticleSystem(GameObject ps)
{
Material m = currentMetaBallScript.CurrentMaterial;
currentMetaBallScript = ps.GetComponent <MetaBalls>();
currentMetaBallScript.CurrentMaterial = m;
currentMetaBallScript.ChangeSpeed(currentSpeed);
currentMetaBallScript.TogglePlay(isNoiseEnabled);
currentMetaBallScript.TogglePlay(isPlaying);
}
// Use this for initialization
void Start()
{
if (fallingParticle == null || sphereParticle == null)
{
Debug.LogError("Make sure there is a reference to the particle systems in the scene.");
return;
}
// Only one should be active, spherical is by default.
fallingParticle.SetActive(false);
sphereParticle.SetActive(true);
currentMetaBallScript = sphereParticle.GetComponent <MetaBalls>();
}
public void ComputeMetaBalls()
{
if (vertices == null)
{
RegenerateGrid();
}
if (metaBalls == null)
{
metaBalls = new MetaBalls();
metaBalls.Initialize();
}
metaBalls.isoValue = iso;
for (int z = 0; z < Steps.z; z++)
{
for (int y = 0; y < Steps.y; y++)
{
for (int x = 0; x < Steps.x; x++)
{
Vertex v = vertices[GetIndex(x, y, z)];
v.flux = metaBalls.GetVertexValue(v);
//v.flux = Random.Range(-1.0f, 1.0f);
if (capped && (z == 0 || x == 0 || y == 0 || x == Steps.x - 1 || y == Steps.y - 1 || z == Steps.z - 1))
{
v.flux = 0;
if (z == 0)
{
//float a = metaBalls.GetVertexValue(vertices[x, y, 2]);
//float b = metaBalls.GetVertexValue(vertices[x, y, 1]);
//v.flux = a;
}
//v.inside = false;
}
v.inside = v.flux > iso;
vertices[GetIndex(x, y, z)] = v;
}
}
}
for (int z = 0; z < Steps.z; z++)
{
for (int y = 0; y < Steps.y; y++)
{
for (int x = 0; x < Steps.x; x++)
{
Vertex v = vertices[GetIndex(x, y, z)];
Vector3 tangent;
const float multiplier = 2;
if (x == 0)
{
v.normal.x = (v.flux - vertices[GetIndex(x + 1, y, z)].flux) * multiplier;
tangent.x = (v.pos - vertices[GetIndex(x + 1, y, z)].pos).x * multiplier;
}
else if (x == Steps.x - 1)
{
v.normal.x = (vertices[GetIndex(x - 1, y, z)].flux - v.flux) * multiplier;
tangent.x = (vertices[GetIndex(x - 1, y, z)].pos - v.pos).x * multiplier;
}
else
{
v.normal.x = vertices[GetIndex(x - 1, y, z)].flux - vertices[GetIndex(x + 1, y, z)].flux;
tangent.x = (vertices[GetIndex(x - 1, y, z)].pos - vertices[GetIndex(x + 1, y, z)].pos).x;
}
if (y == 0)
{
v.normal.y = (v.flux - vertices[GetIndex(x, y + 1, z)].flux) * multiplier;
tangent.y = (v.pos - vertices[GetIndex(x, y + 1, z)].pos).y * multiplier;
}
else if (y == Steps.y - 1)
{
v.normal.y = (vertices[GetIndex(x, y - 1, z)].flux - v.flux) * multiplier;
tangent.y = (vertices[GetIndex(x, y - 1, z)].pos - v.pos).y * multiplier;
}
else
{
v.normal.y = vertices[GetIndex(x, y - 1, z)].flux - vertices[GetIndex(x, y + 1, z)].flux;
tangent.y = (vertices[GetIndex(x, y - 1, z)].pos - vertices[GetIndex(x, y + 1, z)].pos).y;
}
if (z == 0)
{
v.normal.z = (v.flux - vertices[GetIndex(x, y, z + 1)].flux) * multiplier;
tangent.z = (v.pos - vertices[GetIndex(x, y, z + 1)].pos).z * multiplier;
}
else if (z == Steps.z - 1)
{
v.normal.z = (vertices[GetIndex(x, y, z - 1)].flux - v.flux) * multiplier;
tangent.z = (vertices[GetIndex(x, y, z - 1)].pos - v.pos).z * multiplier;
}
else
{
v.normal.z = vertices[GetIndex(x, y, z - 1)].flux - vertices[GetIndex(x, y, z + 1)].flux;
tangent.z = (vertices[GetIndex(x, y, z - 1)].pos - vertices[GetIndex(x, y, z + 1)].pos).z;
}
v.normal.Normalize();
tangent.Normalize();
v.tangent = Vector3.Cross(tangent, v.normal);
//http://en.wikipedia.org/wiki/UV_mapping#Finding_UV_on_a_sphere
v.uv.x = 0.5f - Mathf.Atan2(-v.normal.z, -v.normal.x) / (Mathf.PI * 2);
v.uv.y = 0.5f - 2.0f * (Mathf.Asin(-v.normal.y) / (Mathf.PI * 2));
vertices[GetIndex(x, y, z)] = v;
}
}
}
}
