/// <summary>
/// Executes unrolling operations.
/// </summary>
/// <param name="unrolledCurves">An array of unrolled curves is assigned during the call in this out parameter.</param>
/// <param name="unrolledPoints">An array of unrolled points is assigned during the call in this out parameter.</param>
/// <param name="unrolledDots">An array of unrolled text dots is assigned during the call in this out parameter.</param>
/// <returns>An array of breps. This array can be empty.</returns>
public Brep[] PerformUnroll(out Curve[] unrolledCurves, out Point3d[] unrolledPoints, out TextDot[] unrolledDots)
{
unrolledCurves = new Curve[0];
unrolledPoints = new Point3d[0];
unrolledDots = new TextDot[0];
IntPtr pUnroller = IntPtr.Zero;
if (m_surface != null)
{
IntPtr pSurface = m_surface.ConstPointer();
pUnroller = UnsafeNativeMethods.CRhinoUnroll_NewSrf(pSurface, m_dAbsoluteTolerance, m_dRelativeTolerance);
}
else if (m_brep != null)
{
IntPtr pBrep = m_brep.ConstPointer();
pUnroller = UnsafeNativeMethods.CRhinoUnroll_NewBrp(pBrep, m_dAbsoluteTolerance, m_dRelativeTolerance);
}
if (pUnroller == IntPtr.Zero)
throw new Exception("Unable to access input surface or brep");
Brep[] rc = new Brep[0];
if (0 == UnsafeNativeMethods.CRhinoUnroll_PrepareFaces(pUnroller))
{
if (m_curves.Count > 0)
{
Runtime.InteropWrappers.SimpleArrayCurvePointer crvs = new Rhino.Runtime.InteropWrappers.SimpleArrayCurvePointer(m_curves);
IntPtr pCrvs = crvs.ConstPointer();
UnsafeNativeMethods.CRhinoUnroll_PrepareCurves(pUnroller, pCrvs);
}
if (m_points.Count > 0)
{
Point3d[] pts = m_points.ToArray();
UnsafeNativeMethods.CRhinoUnroll_PreparePoints(pUnroller, pts.Length, pts);
}
if (m_dots.Count > 0)
{
Runtime.INTERNAL_GeometryArray dots = new Rhino.Runtime.INTERNAL_GeometryArray(m_dots);
IntPtr pDots = dots.ConstPointer();
UnsafeNativeMethods.CRhinoUnroll_PrepareDots(pUnroller, pDots);
}
int brepCount = 0;
int curveCount = 0;
int pointCount = 0;
int dotCount = 0;
double explode_dist = -1;
if (m_bExplodeOutput)
explode_dist = m_dExplodeSpacing;
IntPtr pResults = UnsafeNativeMethods.CRhinoUnroll_CreateFlatBreps(pUnroller,
explode_dist, ref brepCount, ref curveCount, ref pointCount, ref dotCount);
if (pResults != IntPtr.Zero)
{
if (brepCount > 0)
{
rc = new Brep[brepCount];
for (int i = 0; i < brepCount; i++)
{
IntPtr pBrep = UnsafeNativeMethods.CRhinoUnrollResults_GetBrep(pResults, i);
if (pBrep != IntPtr.Zero) rc[i] = new Brep(pBrep, null);
}
}
if (curveCount > 0)
{
unrolledCurves = new Curve[curveCount];
for (int i = 0; i < curveCount; i++)
{
IntPtr pCurve = UnsafeNativeMethods.CRhinoUnrollResults_GetCurve(pResults, i);
if (pCurve != IntPtr.Zero) unrolledCurves[i] = new Curve(pCurve, null);
}
}
if (pointCount > 0)
{
unrolledPoints = new Point3d[pointCount];
UnsafeNativeMethods.CRhinoUnrollResults_GetPoints(pResults, pointCount, unrolledPoints);
}
if (dotCount > 0)
{
unrolledDots = new TextDot[dotCount];
for (int i = 0; i < dotCount; i++)
{
IntPtr pDot = UnsafeNativeMethods.CRhinoUnrollResults_GetDot(pResults, i);
if (pDot != IntPtr.Zero) unrolledDots[i] = new TextDot(pDot, null);
}
}
UnsafeNativeMethods.CRhinoUnrollResults_Delete(pResults);
}
}
UnsafeNativeMethods.CRhinoUnroll_Delete(pUnroller);
return rc;
}
/// <summary>
/// Computes the Area properties for a collection of geometric objects.
/// At present only Breps, Surfaces, Meshes and Planar Closed Curves are supported.
/// </summary>
/// <param name="geometry">Objects to include in the area computation.</param>
/// <returns>The Area properties for the entire collection or null on failure.</returns>
public static AreaMassProperties Compute(IEnumerable<GeometryBase> geometry)
{
const double relativeTolerance = 1.0e-6;
const double absoluteTolerance = 1.0e-6;
Rhino.Runtime.INTERNAL_GeometryArray array = new Rhino.Runtime.INTERNAL_GeometryArray(geometry);
IntPtr rc = UnsafeNativeMethods.ON_GeometryMassProperties(true, array.ConstPointer(), relativeTolerance, absoluteTolerance);
return IntPtr.Zero == rc ? null : new AreaMassProperties(rc, false);
}
/// <summary>
/// Computes point intersections that occur when shooting a ray to a collection of surfaces.
/// </summary>
/// <param name="ray">A ray used in intersection.</param>
/// <param name="geometry">Only Surface and Brep objects are currently supported. Trims are ignored on Breps.</param>
/// <param name="maxReflections">The maximum number of reflections. This value should be any value between 1 and 1000, inclusive.</param>
/// <returns>An array of points: one for each face that was passed by the faceIds out reference.</returns>
/// <exception cref="ArgumentNullException">geometry is null.</exception>
/// <exception cref="ArgumentOutOfRangeException">maxReflections is strictly outside the [1-1000] range.</exception>
public static Point3d[] RayShoot(Ray3d ray, IEnumerable<GeometryBase> geometry, int maxReflections)
{
if (geometry == null) throw new ArgumentNullException("geometry");
if (maxReflections < 1 || maxReflections > 1000)
throw new ArgumentOutOfRangeException("maxReflections", "maxReflections must be between 1-1000");
// We should handle better the case of a null entry inside the geometry collection.
// Currently a NullReferenceException occurs.
Rhino.Runtime.INTERNAL_GeometryArray geom = new Rhino.Runtime.INTERNAL_GeometryArray(geometry);
IntPtr pGeometry = geom.ConstPointer();
Point3d[] rc = null;
using (Rhino.Runtime.InteropWrappers.SimpleArrayPoint3d points = new Rhino.Runtime.InteropWrappers.SimpleArrayPoint3d())
{
IntPtr pPoints = points.NonConstPointer();
int count = UnsafeNativeMethods.ON_RayShooter_ShootRay(ray.Position, ray.Direction, pGeometry, pPoints, maxReflections);
if (count > 0) rc = points.ToArray();
}
geom.Dispose();
return rc;
}
