/// <summary>
/// Runs at the end of an element being processed, after all other calls for that element.
/// Here we compile all the "_current" variables (geometry and vertices) onto glTF buffers.
/// We do this at OnElementEnd because it signals no more meshes or materials are
/// coming for this element.
/// </summary>
/// <param name="elementId"></param>
public void OnElementEnd(ElementId elementId)
{
Debug.WriteLine(" OnElementEnd");
if (_skipElementFlag)
{
// Duplicate element, skip.
_skipElementFlag = false;
return;
}
if (_currentVertices.List.Count == 0)
{
return;
}
Element e = _doc.GetElement(elementId);
// create a new mesh for the node (we're assuming 1 mesh per node w/ multiple primatives on mesh)
glTFMesh newMesh = new glTFMesh();
newMesh.primitives = new List <glTFMeshPrimitive>();
Meshes.AddOrUpdateCurrent(e.UniqueId, newMesh);
// add the index of this mesh to the current node.
Nodes.CurrentItem.mesh = Meshes.CurrentIndex;
// Add vertex data to _currentGeometry for each geometry/material pairing
foreach (KeyValuePair <string, VertexLookupInt> kvp in _currentVertices.Dict)
{
string vertex_key = kvp.Key;
foreach (KeyValuePair <PointInt, int> p in kvp.Value)
{
_currentGeometry.GetElement(vertex_key).vertices.Add(p.Key.X);
_currentGeometry.GetElement(vertex_key).vertices.Add(p.Key.Y);
_currentGeometry.GetElement(vertex_key).vertices.Add(p.Key.Z);
}
}
// Convert _currentGeometry objects into glTFMeshPrimitives
foreach (KeyValuePair <string, GeometryData> kvp in _currentGeometry.Dict)
{
glTFBinaryData elementBinary = AddGeometryMeta(kvp.Value, kvp.Key);
binaryFileData.Add(elementBinary);
string material_key = kvp.Key.Split('_')[1];
glTFMeshPrimitive primative = new glTFMeshPrimitive();
primative.attributes.POSITION = elementBinary.vertexAccessorIndex;
primative.indices = elementBinary.indexAccessorIndex;
primative.material = Materials.GetIndexFromUUID(material_key);
// TODO: Add normal here
Meshes.CurrentItem.primitives.Add(primative);
}
}
public void CloseGeometry()
{
Debug.WriteLine(String.Format("{0} Closing Geometry", formatDebugHeirarchy));
// Create the new mesh and populate the primitives with GeometryData
glTFMesh mesh = new glTFMesh();
mesh.primitives = new List <glTFMeshPrimitive>();
// transfer ordered vertices from vertex dictionary to vertices list
foreach (KeyValuePair <string, GeometryData> key_geom in currentGeom)
{
string key = key_geom.Key;
GeometryData geom = key_geom.Value;
foreach (KeyValuePair <PointInt, int> point_index in geom.vertDictionary)
{
PointInt point = point_index.Key;
geom.vertices.Add(point.X);
geom.vertices.Add(point.Y);
geom.vertices.Add(point.Z);
}
// convert GeometryData objects into glTFMeshPrimitive
string material_key = key.Split('_')[1];
glTFBinaryData bufferMeta = processGeometry(geom, key);
if (bufferMeta.hashcode != null)
{
binaryFileData.Add(bufferMeta);
}
glTFMeshPrimitive primative = new glTFMeshPrimitive();
primative.attributes.POSITION = bufferMeta.vertexAccessorIndex;
primative.indices = bufferMeta.indexAccessorIndex;
primative.material = materialDict.GetIndexFromUUID(material_key);
// TODO: Add normal attribute accessor index here
mesh.primitives.Add(primative);
}
// glTF entity can not be empty
if (mesh.primitives.Count() > 0)
{
// Prevent mesh duplication by hash checking
string meshHash = ManagerUtils.GenerateSHA256Hash(mesh);
ManagerUtils.HashSearch hs = new ManagerUtils.HashSearch(meshHash);
int idx = meshContainers.FindIndex(hs.EqualTo);
if (idx != -1)
{
// set the current nodes mesh index to the already
// created mesh location.
nodeDict[currentNodeId].mesh = idx;
}
else
{
// create new mesh and add it's index to the current node.
MeshContainer mc = new MeshContainer();
mc.hashcode = meshHash;
mc.contents = mesh;
meshContainers.Add(mc);
nodeDict[currentNodeId].mesh = meshContainers.Count - 1;
}
}
geometryStack.Pop();
return;
}