// Get SurfaceIndex ByHit
public static int GetSurfaceIndexByHit(RaycastHit hit)
{
const int negativeIndex = -1;
Collider hitCollider = hit.collider;
if (hitCollider == null || hitCollider.isTrigger)
{
return(negativeIndex);
}
// if TerrainTexture != null, return it.
Texture hitTexture = hit.GetTerrainTexture();
if (hitTexture != null)
{
for (int i = 0; i < GetCount; i++)
{
foreach (Texture tex in m_Instance.surfaces[i].textures)
{
if (tex == hitTexture)
{
return(i);
}
}
}
}
// Get Object Material if TerrainTexture == null
Material hitMaterial = hit.GetMaterial();
if (hitMaterial != null)
{
for (int i = 0; i < GetCount; i++)
{
foreach (Material mat in m_Instance.surfaces[i].materials)
{
if (mat == hitMaterial)
{
return(i);
}
}
}
}
return(negativeIndex);
}
// Get MaterialName ByHit
public static string GetMaterialNameByHit(RaycastHit hit)
{
Material theMaterial = hit.GetMaterial();
return((theMaterial != null) ? theMaterial.name : "Unknown Material");
}