| public static Cut ( System.Windows.Media.Media3D.MeshGeometry3D mesh, System.Windows.Media.Media3D.Point3D p, System.Windows.Media.Media3D.Vector3D n ) : System.Windows.Media.Media3D.MeshGeometry3D | ||
| mesh | System.Windows.Media.Media3D.MeshGeometry3D | /// The mesh. /// |
| p | System.Windows.Media.Media3D.Point3D | /// The plane origin. /// |
| n | System.Windows.Media.Media3D.Vector3D | /// The plane normal. /// |
| return | System.Windows.Media.Media3D.MeshGeometry3D | |
/// <summary>
/// Applies the cutting planes to the model.
/// </summary>
/// <param name="model">
/// The model.
/// </param>
/// <param name="transform">
/// The transform.
/// </param>
private void ApplyCuttingPlanesToModel(GeometryModel3D model, Transform3D transform)
{
if (model.Geometry == null)
{
return;
}
bool updateRequired = this.forceUpdate;
if (!this.IsEnabled)
{
updateRequired = true;
}
Geometry3D cutGeometry;
if (this.CutGeometries.TryGetValue(model, out cutGeometry))
{
if (cutGeometry != model.Geometry)
{
updateRequired = true;
}
}
Geometry3D originalGeometry;
if (!this.OriginalGeometries.TryGetValue(model, out originalGeometry))
{
originalGeometry = model.Geometry;
updateRequired = true;
}
this.NewOriginalGeometries.Add(model, originalGeometry);
if (!updateRequired)
{
return;
}
var g = originalGeometry as MeshGeometry3D;
if (this.IsEnabled)
{
var inverseTransform = transform.Inverse;
foreach (var cp in this.CuttingPlanes)
{
var p = inverseTransform.Transform(cp.Position);
var p2 = inverseTransform.Transform(cp.Position + cp.Normal);
var n = p2 - p;
// var p = transform.Transform(cp.Position);
// var n = transform.Transform(cp.Normal);
g = MeshGeometryHelper.Cut(g, p, n);
}
}
model.Geometry = g;
this.NewCutGeometries.Add(model, g);
}
/// <summary>
/// Intersects the specified source mesh geometry with the specified plane.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="inverseTransform">The inverse transform of the source.</param>
/// <param name="plane">The plane.</param>
/// <param name="complement">Cut with the complement set if set to <c>true</c>.</param>
/// <returns>The intersected geometry.</returns>
private MeshGeometry3D Intersect(MeshGeometry3D source, GeneralTransform3D inverseTransform, Plane3D plane, bool complement)
{
var p = inverseTransform.Transform(plane.Position);
var p2 = inverseTransform.Transform(plane.Position + plane.Normal);
var n = p2 - p;
if (complement)
{
n *= -1;
}
return(MeshGeometryHelper.Cut(source, p, n));
}