public SceneGraph(GameObject regionMap, SceneGroupType groupOptions, GameObjectOptions gameObjectOptions, List <FeatureMesh> features)
{
this.gameObjectMeshData = new Dictionary <GameObject, MeshData>();
this.regionMap = regionMap;
this.groupOptions = groupOptions;
this.gameObjectOptions = gameObjectOptions;
this.features = features;
this.leafGroup = groupOptions.GetLeaf();
}
/// <summary>
/// Visits the scene group root recursively and generate a scene graph hierarchy in the Unity scene
/// </summary>
/// <param name="group">The scene group to visit.</param>
/// <param name="parent">The parent transform of the generated game object for the current scene group.</param>
public static void Generate(SceneGroup group, Transform parent, GameObjectOptions options)
{
if (group.meshData.Meshes.Count == 0 && group.childs.Count == 0)
{
return;
}
if (group.childs.Count > 0)
{
var gameObject = new GameObject(group.ToString());
gameObject.isStatic = options.IsStatic;
if (parent != null)
{
gameObject.transform.parent = parent;
}
foreach (var child in group.childs)
{
Generate(child.Value, gameObject.transform, options);
}
}
else
{
group.meshData.FlipIndices();
if (group.meshData.Meshes.Count > 1)
{
var gameObject = new GameObject(group.ToString());
gameObject.transform.parent = parent;
parent = gameObject.transform;
gameObject.isStatic = options.IsStatic;
}
// Create one game object per mesh object 'bucket', each bucket is ensured to
// have less that 65535 vertices (valid under Unity mesh max vertex count).
for (int i = 0; i < group.meshData.Meshes.Count; ++i)
{
var meshBucket = group.meshData.Meshes[i];
var gameObject = new GameObject(group.ToString());
gameObject.isStatic = options.IsStatic;
if (group.meshData.Meshes.Count > 1)
{
gameObject.name += "_Part" + i;
}
gameObject.transform.parent = parent;
var mesh = new Mesh();
mesh.SetVertices(meshBucket.Vertices);
mesh.subMeshCount = meshBucket.Submeshes.Count;
for (int s = 0; s < meshBucket.Submeshes.Count; s++)
{
mesh.SetTriangles(meshBucket.Submeshes[s].Indices, s);
}
mesh.RecalculateNormals();
if (options.IsStatic)
{
#ifdef UNITY_EDITOR
// Generate default uvs for this mesh
Unwrapping.GenerateSecondaryUVSet(mesh);
#endif
}
// Associate the mesh filter and mesh renderer components with this game object
var materials = meshBucket.Submeshes.Select(s => s.Material).ToArray();
var meshFilterComponent = gameObject.AddComponent <MeshFilter>();
var meshRendererComponent = gameObject.AddComponent <MeshRenderer>();
meshRendererComponent.materials = materials;
meshFilterComponent.mesh = mesh;
if (options.GeneratePhysicMeshCollider)
{
var meshColliderComponent = gameObject.AddComponent <MeshCollider>();
meshColliderComponent.material = options.PhysicMaterial;
meshColliderComponent.sharedMesh = mesh;
}
}
}
}