/// <summary>
/// Sets the render meshes for <paramref name="obj"/> using <paramref name="sharedMeshes"/>.
/// </summary>
/// <param name="obj">The object to initialise visuals for.</param>
/// <param name="sharedMeshes">The meshes to render with.</param>
/// <param name="colour">Primary rendering colour.</param>
/// <remarks>
/// This function sets <paramref name="sharedMeshes"/> as a set of shared mesh resources
/// to render <paramref name="obj"/> with. When there is one element in
/// <paramref name="sharedMeshes"/>, the mesh and material are set on the
/// <c>MeshFilter</c> and <c>MeshRenderer</c> belonging to <paramref name="obj"/> itself.
/// When multiple items are given, the children of <paramref name="obj"/> are used instead.
/// This means the number of children must match the number of elements in
/// <paramref name="sharedMeshes"/>.
///
/// The materials used are attained via <see cref="LookupMaterialFor(ShapeComponent)"/>
/// where the <see cref="ShapeComponent"/> belongs to <paramref name="obj"/>.
/// </remarks>
protected virtual void InitialiseMesh(ShapeComponent obj, Mesh[] sharedMeshes, Color colour)
{
MeshFilter filter = obj.GetComponent <MeshFilter>();
MeshRenderer render = obj.GetComponent <MeshRenderer>();
ShapeComponent shape = obj.GetComponent <ShapeComponent>();
if (sharedMeshes.Length == 1)
{
// Single mesh. Set on this object.
if (filter != null)
{
filter.sharedMesh = sharedMeshes[0];
if (render != null)
{
int componentCount = (filter.sharedMesh != null) ? filter.sharedMesh.subMeshCount : 0;
SetMaterial(LookupMaterialFor(shape), render, componentCount, colour);
}
}
}
else
{
// Multiple meshes. Set on children.
Transform child;
for (int i = 0; i < sharedMeshes.Length; ++i)
{
child = obj.transform.GetChild(i);
if ((filter = child.GetComponent <MeshFilter>()) != null)
{
filter.sharedMesh = sharedMeshes[i];
}
if ((render = child.GetComponent <MeshRenderer>()))
{
SetMaterial(LookupMaterialFor(shape), render, sharedMeshes[i].subMeshCount, colour);
}
}
}
}
