Is it possible to use the paramters bothside and Cap in RhinoOffsetCurve command? How?
Thanks
Hi @dale
I run Rhino SDK funnction “RhinoOffsetCurve” by C++ to offset my Crv1, but the result has problem.
Crv1.3dm (230.4 KB)
my code as following
// Select Crv
const ON_Curve* Crv1 = NULL;
ON_Curve* OffsetBoundaryCrv = NULL;
CRhinoGetObject get;
unsigned int geometry_type_filter = 0;
geometry_type_filter |= CRhinoGetObject::curve_object;
get.SetGeometryFilter(geometry_type_filter);
get.AcceptNothing(true);
get.SetCommandPrompt(L"Select Crv1");
for (;;)
{
context.m_doc.UnselectAll();
context.m_doc.Redraw();
CRhinoGet::result res = get.GetObjects(1, 1);
if (res == CRhinoGet::object)
{
Crv1 = ON_Curve::Cast(const_cast<CRhinoObject*>(get.Object(0).Object())->Geometry())->DuplicateCurve();
ON_SimpleArray<ON_Curve*> offCuvs;
ON_3dPoint pnt = Crv1->PointAt(Crv1->Domain().Mid());
RhinoOffsetCurve(*Crv1, -ON_zaxis, pnt, -10., offCuvs, 0.02,0, 1);
ON_PolyCurve* poly = new ON_PolyCurve;
for (int j = 0; j < offCuvs.Count(); j++)
poly->AppendAndMatch(*offCuvs.At(j));
OffsetBoundaryCrv = poly;
::RhinoApp().ActiveDoc()->AddCurveObject(*OffsetBoundaryCrv);
RhinoApp().ActiveDoc()->Redraw();
break;
}
else if (res == CRhinoGet::cancel)
return CRhinoCommand::cancel;
}
return CRhinoCommand::success;
Could you help me to check the problem?
my Rhino6 sdk version is 6.19.19295.01001
Rhino6 version is 6.19.19295.01001
Thanks~
Hi @angelwang,
I see you are using the deprecated version of RhinoOffsetCuve. Please try using the version that is not deprecated.
/*
Description:
Offsets a curve.
Parameters:
curve_in - [in] the curve to offset.
distance - [in] the distance to offset the curve.
direction_point - [in] a point that indicates the direction of the offset.
normal - [in] a vector that indicates the normal of the plane in which the offset will occur.
corner_style - [in] the corner style, where:
no_corner = 0, sharp = 1, round = 2, smooth = 3, chamfer = 4
tolerance - [in] the offset tolerance.
curves_out - [out] the offset curves.
Returns:
Returns number of curves that are appended to array.
Remarks:
The caller is responsible for deleting these curves when finished.
*/
int RhinoOffsetCurve(
const ON_Curve& curve_in,
double distance,
ON_3dPoint direction_point,
ON_3dVector normal,
int corner_style,
double tolerance,
ON_SimpleArray<ON_Curve*>& curves_out
);
– Dale
Hi @dale
Thank you for your reply.
I try RhinoOffsetCurve by your suggestion, but it has same problem.
Crv1.3dm (184.6 KB)
// Select Crv
const ON_Curve* Crv1 = NULL;
ON_Curve* OffsetBoundaryCrv = NULL;
CRhinoGetObject get;
unsigned int geometry_type_filter = 0;
geometry_type_filter |= CRhinoGetObject::curve_object;
get.SetGeometryFilter(geometry_type_filter);
get.AcceptNothing(true);
get.SetCommandPrompt(L"Select Crv1");
for (;;)
{
context.m_doc.UnselectAll();
context.m_doc.Redraw();
CRhinoGet::result res = get.GetObjects(1, 1);
if (res == CRhinoGet::object)
{
Crv1 = ON_Curve::Cast(const_cast<CRhinoObject*>(get.Object(0).Object())->Geometry())->DuplicateCurve();
ON_SimpleArray<ON_Curve*> offCuvs;
ON_3dPoint pnt = Crv1->PointAt(Crv1->Domain().Mid());
ON_3dVector Tan = Crv1->TangentAt(Crv1->Domain().Mid());
ON_3dVector Vec = ON_CrossProduct(Tan,ON_zaxis); Vec.Unitize();
double offsetValue = -10.;
pnt = pnt + Vec;
RhinoOffsetCurve(*Crv1, offsetValue, pnt, ON_zaxis, 1, 0.02, offCuvs);
ON_PolyCurve* poly = new ON_PolyCurve;
for (int j = 0; j < offCuvs.Count(); j++)
poly->AppendAndMatch(*offCuvs.At(j));
OffsetBoundaryCrv = poly;
::RhinoApp().ActiveDoc()->AddCurveObject(*OffsetBoundaryCrv);
RhinoApp().ActiveDoc()->Redraw();
break;
}
else if (res == CRhinoGet::cancel)
return CRhinoCommand::cancel;
}
return CRhinoCommand::success;
Could you help me to check the problem?
Thanks~
Hi @angelwang,
This seems to work on your curve:
CRhinoCommand::result CCommandTestAngel::RunCommand(const CRhinoCommandContext& context)
{
CRhinoGetObject go;
go.SetCommandPrompt(L"Select curve to offset");
go.SetGeometryFilter(CRhinoGetObject::curve_object);
go.GetObjects(1, 1);
if (go.CommandResult() != CRhinoCommand::success)
return go.CommandResult();
const ON_Curve* curve = go.Object(0).Curve();
if (nullptr == curve)
return CRhinoCommand::failure;
CRhinoView* view = go.View();
if (nullptr == view)
return CRhinoCommand::failure;
const double distance = 10.0;
ON_3dPoint direction_point = ON_3dPoint::Origin;
ON_3dVector normal = view->ActiveViewport().ConstructionPlane().m_plane.Normal();
const int corner_style = 1; // sharp
const double tolerance = context.m_doc.AbsoluteTolerance();
ON_SimpleArray<ON_Curve*> out_curves;
RhinoOffsetCurve(*curve, distance, direction_point, normal, corner_style, tolerance, out_curves);
RhinoOffsetCurve(*curve, -distance, direction_point, normal, corner_style, tolerance, out_curves);
for (int i = 0; i < out_curves.Count(); i++)
{
context.m_doc.AddCurveObject(*out_curves[i]);
delete out_curves[i]; // Don't leak...
}
context.m_doc.Redraw();
return CRhinoCommand::success;
}
Does this help?
– Dale