/// <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, elementId.IntegerValue);
binaryFileData.Add(elementBinary);
string material_key = kvp.Key.Split('_')[1];
glTFMeshPrimitive primitive = new glTFMeshPrimitive();
primitive.attributes.POSITION = elementBinary.vertexAccessorIndex;
//primitive.attributes.NORMAL = elementBinary.normalsAccessorIndex;
primitive.attributes._BATCHID = elementBinary.batchIdAccessorIndex;
primitive.indices = elementBinary.indexAccessorIndex;
primitive.material = Materials.GetIndexFromUUID(material_key);
Meshes.CurrentItem.primitives.Add(primitive);
}
}
