/// <summary>
/// Computes draft curve silhouettes of a shape.
/// </summary>
/// <param name="geometry">Geometry whose silhouettes need to be computed. Can be Brep, BrepFace, Mesh, or Extrusion.</param>
/// <param name="draftAngle">The draft angle in radians. Draft angle can be a positive or negative value.</param>
/// <param name="pullDirection">3d direction for the mold to be pulled in, directed away from the object.</param>
/// <param name="tolerance">
/// Tolerance to use for determining projecting relationships.
/// Surfaces and curves that are closer than tolerance, may be treated as projecting.
/// When in doubt use RhinoDoc.ModelAbsoluteTolerance.
/// </param>
/// <param name="angleToleranceRadians">
/// Angular tolerance to use for determining projecting relationships.
/// A surface normal N that satisfies N o cameraDirection < Sin(angleToleranceRadians) may be considered projecting.
/// When in doubt use RhinoDoc.ModelAngleToleranceRadians.
/// </param>
/// <param name="cancelToken">Computation cancellation token.</param>
/// <returns>Array of silhouette curves.</returns>
/// <since>7.0</since>
public static Silhouette[] ComputeDraftCurve(
GeometryBase geometry,
double draftAngle,
Vector3d pullDirection,
double tolerance,
double angleToleranceRadians,
System.Threading.CancellationToken cancelToken
)
{
IntPtr const_ptr_geometry = geometry.ConstPointer();
ThreadTerminator terminator = null;
if (cancelToken != System.Threading.CancellationToken.None)
{
terminator = new ThreadTerminator();
cancelToken.Register(terminator.RequestCancel);
}
IntPtr ptr_terminator = terminator == null ? IntPtr.Zero : terminator.NonConstPointer();
IntPtr ptr_silhouettes = UnsafeNativeMethods.TLC_Sillhouette3(const_ptr_geometry, draftAngle, pullDirection, tolerance, angleToleranceRadians, ptr_terminator);
Silhouette[] rc = FromClassArray(ptr_silhouettes);
UnsafeNativeMethods.TLC_SilhouetteArrayDelete(ptr_silhouettes);
if (terminator != null)
{
terminator.Dispose();
}
GC.KeepAlive(geometry);
return(rc);
}
internal override IntPtr _InternalGetConstPointer()
{
if (null != m_shallow_parent)
{
return(m_shallow_parent.ConstPointer());
}
#if RHINO_SDK
ObjRef obj_ref = m__parent as ObjRef;
if (null != obj_ref)
{
return(obj_ref.GetGeometryConstPointer(this));
}
RhinoObject parent_object = ParentRhinoObject();
if (parent_object == null)
{
FileIO.File3dmObject fileobject = m__parent as FileIO.File3dmObject;
if (null != fileobject)
{
return(fileobject.GetGeometryConstPointer());
}
}
uint serial_number = 0;
IntPtr ptr_parent_rhinoobject = IntPtr.Zero;
if (null != parent_object)
{
serial_number = parent_object.m_rhinoobject_serial_number;
ptr_parent_rhinoobject = parent_object.m_pRhinoObject;
if (IntPtr.Zero == ptr_parent_rhinoobject &&
parent_object.m__parent != null &&
parent_object.m__parent is ObjRef)
{
ObjRef objref = parent_object.m__parent as ObjRef;
IntPtr constPtrObjRef = objref.ConstPointer();
ptr_parent_rhinoobject = UnsafeNativeMethods.CRhinoObjRef_Object(constPtrObjRef);
}
}
ComponentIndex ci = new ComponentIndex();
// There are a few cases (like in ReplaceObject callback) where the parent
// rhino object temporarily holds onto the CRhinoObject* because the object
// is not officially in the document yet.
if (ptr_parent_rhinoobject != IntPtr.Zero)
{
return(UnsafeNativeMethods.CRhinoObject_Geometry(ptr_parent_rhinoobject, ci));
}
return(UnsafeNativeMethods.CRhinoObject_Geometry2(serial_number, ci));
#else
var fileobject = m__parent as Pixel.Rhino.FileIO.File3dmObject;
if (null != fileobject)
{
return(fileobject.GetGeometryConstPointer());
}
return(IntPtr.Zero);
#endif
}
/// <summary>
/// Compute silhouettes of a shape for a perspective projection.
/// </summary>
/// <param name="geometry">Geometry whose silhouettes need to be computed. Can be Brep, BrepFace, Mesh, or Extrusion.</param>
/// <param name="silhouetteType">Types of silhouette to compute.</param>
/// <param name="perspectiveCameraLocation">Location of perspective camera.</param>
/// <param name="tolerance">Tolerance to use for determining projecting relationships.
/// Surfaces and curves that are closer than tolerance, may be treated as projecting.
/// When in doubt use RhinoDoc.ModelAbsoluteTolerance.</param>
/// <param name="angleToleranceRadians">Angular tolerance to use for determining projecting relationships.
/// A surface normal N that satisfies N o cameraDirection < Sin(angleToleranceRadians) may be considered projecting.
/// When in doubt use RhinoDoc.ModelAngleToleranceRadians.</param>
/// <param name="clippingPlanes">Optional collection of clipping planes.</param>
/// <param name="cancelToken">Computation cancellation token.</param>
/// <returns>Array of silhouette curves.</returns>
/// <since>6.0</since>
public static Silhouette[] Compute(
GeometryBase geometry,
SilhouetteType silhouetteType,
Point3d perspectiveCameraLocation,
double tolerance,
double angleToleranceRadians,
IEnumerable <Plane> clippingPlanes,
System.Threading.CancellationToken cancelToken)
{
IntPtr const_ptr_geometry = geometry.ConstPointer();
Plane[] planes = null;
int plane_count = 0;
if (clippingPlanes != null)
{
List <Plane> p = new List <Plane>(clippingPlanes);
plane_count = p.Count;
planes = p.ToArray();
}
ThreadTerminator terminator = null;
IntPtr ptr_terminator = IntPtr.Zero;
if (cancelToken != System.Threading.CancellationToken.None)
{
terminator = new ThreadTerminator();
ptr_terminator = terminator.NonConstPointer();
cancelToken.Register(terminator.RequestCancel);
}
UnsafeNativeMethods.SilEventType s = (UnsafeNativeMethods.SilEventType)silhouetteType;
IntPtr ptr_silhouettes = UnsafeNativeMethods.TLC_Sillhouette2(const_ptr_geometry, s, perspectiveCameraLocation, tolerance, angleToleranceRadians, planes, plane_count, ptr_terminator);
Silhouette[] rc = FromClassArray(ptr_silhouettes);
UnsafeNativeMethods.TLC_SilhouetteArrayDelete(ptr_silhouettes);
if (terminator != null)
{
terminator.Dispose();
}
GC.KeepAlive(geometry);
return(rc);
}
/// <summary>
/// Determines if two geometries equal one another, in pure geometrical shape.
/// This version only compares the geometry itself and does not include any user
/// data comparisons.
/// This is a comparison by value: for two identical items it will be true, no matter
/// where in memory they may be stored.
/// </summary>
/// <param name="first">The first geometry</param>
/// <param name="second">The second geometry</param>
/// <returns>The indication of equality</returns>
/// <since>6.0</since>
public static bool GeometryEquals(GeometryBase first, GeometryBase second)
{
if (first == null && second == null)
{
return(true);
}
if (first == null || second == null)
{
return(false);
}
IntPtr first_ptr = first.ConstPointer();
IntPtr second_ptr = second.ConstPointer();
bool rc = UnsafeNativeMethods.RH_RhinoCompareGeometry(first_ptr, second_ptr);
Runtime.CommonObject.GcProtect(first, second);
return(rc);
}