/// <summary>
/// read stl format
/// </summary>
/// <param name="stream">stl file stream</param>
/// <returns>stl data</returns>
public StlModel Read(Stream stream)
{
var model = new StlModel();
using (var reader = new StreamReader(stream))
{
// skip header(solid [name])
reader.ReadLine();
// read facet loop
while (!reader.EndOfStream)
{
Facet facet = null;
if ((facet = ReadFacet(reader)) == null)
{
break;
}
model.Facets.Add(facet);
}
}
return(model);
}
/// <summary>
/// read stl format
/// </summary>
/// <param name="stream">stl file stream</param>
/// <returns>stl data</returns>
public StlModel Read(Stream stream)
{
var model = new StlModel();
using (var reader = new BinaryReader(stream, Encoding.ASCII))
{
// skip header
reader.ReadBytes(80);
uint triangleCount = reader.ReadUInt32();
for (int i = 0; i < triangleCount; i++)
{
var facet = ReadFacet(reader);
model.Facets.Add(facet);
}
}
return(model);
}
private void UpdateStlModel(StlModel stlModel)
{
Model3DGroup.Children.Clear();
if (stlModel == null)
{
return;
}
var mesh = new MeshGeometry3D();
var idPt = 0;
foreach (var triangle in stlModel.Triangles)
{
mesh.Positions.Add(triangle.X);
mesh.TriangleIndices.Add(idPt++);
mesh.Positions.Add(triangle.Y);
mesh.TriangleIndices.Add(idPt++);
mesh.Positions.Add(triangle.Z);
mesh.TriangleIndices.Add(idPt++);
}
_stlModel3D = new GeometryModel3D(mesh, new DiffuseMaterial(new SolidColorBrush(_color)));
Model3DGroup.Children.Add(_stlModel3D);
var range = new List <double>
{
stlModel.Max.X - stlModel.Min.X,
stlModel.Max.Y - stlModel.Min.Y,
stlModel.Max.Z - stlModel.Min.Z
}.Max();
var scale = Math.Abs(range) < float.Epsilon ? 1 : 1 / range;
var transform = new Transform3DGroup();
transform.Children.Add(new TranslateTransform3D(-(stlModel.Max.X + stlModel.Min.X) / 2,
-(stlModel.Max.Y + stlModel.Min.Y) / 2, -(stlModel.Max.Z + stlModel.Min.Z) / 2));
_scaleTransform = new ScaleTransform3D(scale, scale, scale);
transform.Children.Add(_scaleTransform);
_rotateTransform = new RotateTransform3D(new QuaternionRotation3D());
transform.Children.Add(_rotateTransform);
Model3DGroup.Transform = transform;
}
public static void SetStlModel(StlControl control, StlModel model)
{
control.StlModel = model;
}
