static public List <double> ConvertXForm(Transform xform)
{
if (xform == null || xform.IsIdentity)
{
return(null);
}
var BasisX = xform.BasisX;
var BasisY = xform.BasisY;
var BasisZ = xform.BasisZ;
var Origin = xform.Origin;
var OriginX = PointInt.ConvertFeetToMillimetres(Origin.X);
var OriginY = PointInt.ConvertFeetToMillimetres(Origin.Y);
var OriginZ = PointInt.ConvertFeetToMillimetres(Origin.Z);
List <double> glXform = new List <double>(16)
{
BasisX.X, BasisX.Y, BasisX.Z, 0,
BasisY.X, BasisY.Y, BasisY.Z, 0,
BasisZ.X, BasisZ.Y, BasisZ.Z, 0,
OriginX, OriginY, OriginZ, 1
};
return(glXform);
}
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;
}