private void CreateFaceModels(IFCItem item, Vector3D center)
{
while (item != null) {
if (item.ifcID != IntPtr.Zero && item.noVerticesForFaces != 0 && item.noPrimitivesForFaces != 0) {
var positions = new Point3DCollection();
var normals = new Vector3DCollection();
if (item.verticesForFaces != null) {
for (int i = 0; i < item.noVerticesForFaces; i++) {
var point = new Point3D(item.verticesForFaces[6 * i + 0] - center.X, item.verticesForFaces[6 * i + 1] - center.Y, item.verticesForFaces[6 * i + 2] - center.Z);
var normal = new Vector3D(item.verticesForFaces[6 * i + 3], item.verticesForFaces[6 * i + 4], item.verticesForFaces[6 * i + 5]);
positions.Add(point);
normals.Add(normal);
}
Debug.Assert(item.verticesForFaces.Length == item.noVerticesForFaces * 6);
}
var indices = new Int32Collection();
if (item.indicesForFaces != null) {
for (int i = 0; i < 3 * item.noPrimitivesForFaces; i++) {
indices.Add(item.indicesForFaces[i]);
}
}
MeshGeometry3D meshGeometry = new MeshGeometry3D();
meshGeometry.Positions = positions;
meshGeometry.Normals = normals;
meshGeometry.TriangleIndices = indices;
MeshGeometryVisual3D mesh = new MeshGeometryVisual3D();
mesh.MeshGeometry = meshGeometry;
item.Mesh3d = mesh;
_meshToIfcItems[mesh] = item;
#if DEBUG
OutputObj(item.ifcID.ToString(), meshGeometry);
#endif
FillMeshByIfcColor(item);
hVp3D.Children.Add(mesh);
}
CreateFaceModels(item.child, center);
item = item.next;
}
}
public void GetModel(MeshGeometryVisual3D mesh)
{
MeshBuilder mb = new MeshBuilder(false, true);
double Hdelta = MaxHeight - MinHeight;
for (int x = 0; x < SizeX - 1; x++)
{
for (int y = 0; y < SizeY - 1; y++)
{
if (!Points[x, y].HasValue || !Points[x, y + 1].HasValue || !Points[x + 1, y].HasValue || !Points[x + 1, y + 1].HasValue)
continue;
mb.AddQuad(
new Point3D(Min.X + (x + 1) * Delta.X / (SizeX - 1), Min.Y + (y) * Delta.Y / (SizeY - 1), Points[x + 1, y].Value),
new Point3D(Min.X + (x + 1) * Delta.X / (SizeX - 1), Min.Y + (y + 1) * Delta.Y / (SizeY - 1), Points[x + 1, y + 1].Value),
new Point3D(Min.X + (x) * Delta.X / (SizeX - 1), Min.Y + (y + 1) * Delta.Y / (SizeY - 1), Points[x, y + 1].Value),
new Point3D(Min.X + (x) * Delta.X / (SizeX - 1), Min.Y + (y) * Delta.Y / (SizeY - 1), Points[x, y].Value),
new Point(0, (Points[x + 1, y].Value - MinHeight) * Hdelta),
new Point(0, (Points[x + 1, y + 1].Value - MinHeight) * Hdelta),
new Point(0, (Points[x, y + 1].Value - MinHeight) * Hdelta),
new Point(0, (Points[x, y].Value - MinHeight) * Hdelta)
);
}
}
mesh.MeshGeometry = mb.ToMesh();
}
