mirror of
https://github.com/mcneel/opennurbs.git
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01cdb463e6
Co-authored-by: Andrew Le Bihan <andy@mcneel.com> Co-authored-by: chuck <chuck@mcneel.com> Co-authored-by: Dale Fugier <dale@mcneel.com> Co-authored-by: Dale Lear <dalelear@mcneel.com> Co-authored-by: David Eränen <david.eranen@mcneel.com> Co-authored-by: Greg Arden <greg@mcneel.com> Co-authored-by: John Croudy <john.croudy@mcneel.com> Co-authored-by: Lowell Walmsley <lowell@mcneel.com> Co-authored-by: Nathan Letwory <nathan@mcneel.com> Co-authored-by: piac <giulio@mcneel.com> Co-authored-by: Steve Baer <steve@mcneel.com> Co-authored-by: Tim Hemmelman <tim@mcneel.com>
501 lines
18 KiB
C++
501 lines
18 KiB
C++
/* $NoKeywords: $ */
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/*
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//
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// Copyright (c) 1993-2012 Robert McNeel & Associates. All rights reserved.
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// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert
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// McNeel & Associates.
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//
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// THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY.
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// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF
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// MERCHANTABILITY ARE HEREBY DISCLAIMED.
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//
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// For complete openNURBS copyright information see <http://www.opennurbs.org>.
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//
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////////////////////////////////////////////////////////////////
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*/
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#if !defined(OPENNURBS_SUM_SURFACE_INC_)
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#define OPENNURBS_SUM_SURFACE_INC_
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class ON_SumSurface;
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// surface of revolution
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class ON_CLASS ON_SumSurface : public ON_Surface
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{
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ON_OBJECT_DECLARE(ON_SumSurface);
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public:
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// virtual ON_Object::DestroyRuntimeCache override
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void DestroyRuntimeCache( bool bDelete = true ) override;
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public:
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// for expert users
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// surface-PointAt(s,t)
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// = m_curve[0]->PointAt(s) + m_curve[1]->PointAt(t) + m_basepoint;
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ON_Curve* m_curve[2] = {}; // m_curve[0] and m_curve[1] are deleted by ~ON_SumSuface.
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// Use a ON_ProxyCurve if this is problem.
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ON_3dVector m_basepoint = ON_3dPoint::Origin;
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ON_BoundingBox m_bbox = ON_BoundingBox::EmptyBoundingBox; // lazy evaluation used in ON_SumSurface::BoundingBox()
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public:
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/*
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Description:
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Use ON_SumSurface::New(...) instead of new ON_SumSurface(...)
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Returns:
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Pointer to an ON_SumSurface. Destroy by calling delete.
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Remarks:
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See static ON_Brep* ON_Brep::New() for details.
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*/
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static ON_SumSurface* New();
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static ON_SumSurface* New( const ON_SumSurface& rev_surface );
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ON_SumSurface();
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virtual ~ON_SumSurface();
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ON_SumSurface( const ON_SumSurface& );
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ON_SumSurface& operator=(const ON_SumSurface&);
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private:
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void Internal_CopyFrom(const ON_SumSurface&);
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public:
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/*
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Description:
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Extrude a curve to create a surface.
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Parameters:
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curve - [in] curve is copied.
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extrusion_vector - [in] extrusion vector (must be nonzero)
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Returns:
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true if a valid surface is created.
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*/
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bool Create( const ON_Curve& curve, ON_3dVector extrusion_vector );
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/*
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Description:
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Extrude a curve to create a surface.
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Parameters:
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pCurve - [in] pointer to a curve. This pointer will
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be assigned to m_curve[0] and will be deleted
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by ~ON_SumSurface.
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extrusion_vector - [in] extrusion vector (must be nonzero)
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Returns:
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true if a valid surface is created.
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*/
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bool Create( ON_Curve* pCurve, ON_3dVector extrusion_vector );
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/*
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Description:
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Extrude a curve along a path to create a surface.
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Parameters:
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curve - [in] curve is copied.
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path_curve - [in] path_curve is copied.
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Returns:
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true if a valid surface is created.
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*/
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bool Create( const ON_Curve& curve,
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const ON_Curve& path_curve
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);
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/*
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Description:
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Extrude a curve to create a surface.
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Parameters:
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pCurve - [in] pointer to a curve. This pointer will
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be assigned to m_curve[0] and will be deleted
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by ~ON_SumSurface.
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pPathCurve - [in] pointer to a path curve. This pointer will
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be assigned to m_curve[1] and will be deleted
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by ~ON_SumSurface.
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Returns:
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true if a valid surface is created.
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*/
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bool Create(
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ON_Curve* pCurve,
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ON_Curve* pPathCurve
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);
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void Destroy();
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void EmergencyDestroy();
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////////////////////////////////////////////////////////////
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//
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// overrides of virtual ON_Object functions
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//
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// virtual ON_Object::SizeOf override
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unsigned int SizeOf() const override;
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// virtual ON_Object::DataCRC override
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ON__UINT32 DataCRC(ON__UINT32 current_remainder) const override;
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bool IsValid( class ON_TextLog* text_log = nullptr ) const override;
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void Dump( ON_TextLog& ) const override; // for debugging
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// Use ON_BinaryArchive::WriteObject() and ON_BinaryArchive::ReadObject()
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// for top level serialization. These Read()/Write() members should just
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// write/read specific definitions. In particular, they should not write/
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// read any chunk typecode or length information. The default
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// implementations return false and do nothing.
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bool Write(
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ON_BinaryArchive& // serialize definition to binary archive
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) const override;
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bool Read(
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ON_BinaryArchive& // restore definition from binary archive
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) override;
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////////////////////////////////////////////////////////////
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//
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// overrides of virtual ON_Geometry functions
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//
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int Dimension() const override;
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// virtual ON_Geometry GetBBox override
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bool GetBBox( double* boxmin, double* boxmax, bool bGrowBox = false ) const override;
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void ClearBoundingBox() override;
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bool Transform(
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const ON_Xform&
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) override;
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// virtual ON_Geometry::IsDeformable() override
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bool IsDeformable() const override;
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// virtual ON_Geometry::MakeDeformable() override
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bool MakeDeformable() override;
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////////////////////////////////////////////////////////////
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//
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// overrides of virtual ON_Surface functions
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//
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bool SetDomain(
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int dir, // 0 sets first parameter's domain, 1 gets second parameter's domain
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double t0,
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double t1
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) override;
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ON_Interval Domain(
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int // 0 gets first parameter's domain, 1 gets second parameter's domain
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) const override;
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/*
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Description:
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Get an estimate of the size of the rectangle that would
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be created if the 3d surface where flattened into a rectangle.
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Parameters:
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width - [out] (corresponds to the first surface parameter)
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height - [out] (corresponds to the first surface parameter)
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Remarks:
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overrides virtual ON_Surface::GetSurfaceSize
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Returns:
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true if successful.
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*/
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bool GetSurfaceSize(
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double* width,
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double* height
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) const override;
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int SpanCount(
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int // 0 gets first parameter's domain, 1 gets second parameter's domain
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) const override; // number of smooth spans in curve
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bool GetSpanVector( // span "knots"
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int, // 0 gets first parameter's domain, 1 gets second parameter's domain
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double* // array of length SpanCount() + 1
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) const override; //
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int Degree( // returns maximum algebraic degree of any span
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// ( or a good estimate if curve spans are not algebraic )
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int // 0 gets first parameter's domain, 1 gets second parameter's domain
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) const override;
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bool GetParameterTolerance( // returns tminus < tplus: parameters tminus <= s <= tplus
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int, // 0 gets first parameter, 1 gets second parameter
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double, // t = parameter in domain
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double*, // tminus
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double* // tplus
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) const override;
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/*
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Description:
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Test a surface to see if it is planar.
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Parameters:
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plane - [out] if not nullptr and true is returned,
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the plane parameters are filled in.
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tolerance - [in] tolerance to use when checking
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Returns:
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true if there is a plane such that the maximum distance from
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the surface to the plane is <= tolerance.
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Remarks:
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Overrides virtual ON_Surface::IsPlanar.
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*/
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bool IsPlanar(
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ON_Plane* plane = nullptr,
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double tolerance = ON_ZERO_TOLERANCE
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) const override;
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bool IsClosed( // true if surface is closed in direction
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int // dir 0 = "s", 1 = "t"
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) const override;
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bool IsPeriodic( // true if surface is periodic in direction
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int // dir 0 = "s", 1 = "t"
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) const override;
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bool IsSingular( // true if surface side is collapsed to a point
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int // side of parameter space to test
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// 0 = south, 1 = east, 2 = north, 3 = west
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) const override;
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/*
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Description:
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Search for a derivatitive, tangent, or curvature
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discontinuity.
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Parameters:
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dir - [in] If 0, then "u" parameter is checked. If 1, then
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the "v" parameter is checked.
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c - [in] type of continity to test for.
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t0 - [in] Search begins at t0. If there is a discontinuity
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at t0, it will be ignored. This makes it
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possible to repeatedly call GetNextDiscontinuity
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and step through the discontinuities.
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t1 - [in] (t0 != t1) If there is a discontinuity at t1 is
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will be ingored unless c is a locus discontinuity
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type and t1 is at the start or end of the curve.
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t - [out] if a discontinuity is found, then *t reports the
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parameter at the discontinuity.
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hint - [in/out] if GetNextDiscontinuity will be called
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repeatedly, passing a "hint" with initial value *hint=0
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will increase the speed of the search.
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dtype - [out] if not nullptr, *dtype reports the kind of
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discontinuity found at *t. A value of 1 means the first
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derivative or unit tangent was discontinuous. A value
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of 2 means the second derivative or curvature was
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discontinuous. A value of 0 means teh curve is not
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closed, a locus discontinuity test was applied, and
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t1 is at the start of end of the curve.
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cos_angle_tolerance - [in] default = cos(1 degree) Used only
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when c is ON::continuity::G1_continuous or ON::continuity::G2_continuous. If the
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cosine of the angle between two tangent vectors is
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<= cos_angle_tolerance, then a G1 discontinuity is reported.
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curvature_tolerance - [in] (default = ON_SQRT_EPSILON) Used
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only when c is ON::continuity::G2_continuous. If K0 and K1 are
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curvatures evaluated from above and below and
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|K0 - K1| > curvature_tolerance, then a curvature
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discontinuity is reported.
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Returns:
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Parametric continuity tests c = (C0_continuous, ..., G2_continuous):
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true if a parametric discontinuity was found strictly
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between t0 and t1. Note well that all curves are
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parametrically continuous at the ends of their domains.
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Locus continuity tests c = (C0_locus_continuous, ...,G2_locus_continuous):
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true if a locus discontinuity was found strictly between
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t0 and t1 or at t1 is the at the end of a curve.
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Note well that all open curves (IsClosed()=false) are locus
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discontinuous at the ends of their domains. All closed
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curves (IsClosed()=true) are at least C0_locus_continuous at
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the ends of their domains.
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*/
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bool GetNextDiscontinuity(
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int dir,
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ON::continuity c,
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double t0,
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double t1,
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double* t,
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int* hint=nullptr,
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int* dtype=nullptr,
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double cos_angle_tolerance=ON_DEFAULT_ANGLE_TOLERANCE_COSINE,
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double curvature_tolerance=ON_SQRT_EPSILON
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) const override;
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/*
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Description:
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Test continuity at a surface parameter value.
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Parameters:
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c - [in] continuity to test for
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s - [in] surface parameter to test
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t - [in] surface parameter to test
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hint - [in] evaluation hint
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point_tolerance - [in] if the distance between two points is
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greater than point_tolerance, then the surface is not C0.
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d1_tolerance - [in] if the difference between two first derivatives is
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greater than d1_tolerance, then the surface is not C1.
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d2_tolerance - [in] if the difference between two second derivatives is
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greater than d2_tolerance, then the surface is not C2.
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cos_angle_tolerance - [in] default = cos(1 degree) Used only when
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c is ON::continuity::G1_continuous or ON::continuity::G2_continuous. If the cosine
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of the angle between two normal vectors
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is <= cos_angle_tolerance, then a G1 discontinuity is reported.
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curvature_tolerance - [in] (default = ON_SQRT_EPSILON) Used only when
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c is ON::continuity::G2_continuous. If K0 and K1 are curvatures evaluated
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from above and below and |K0 - K1| > curvature_tolerance,
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then a curvature discontinuity is reported.
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Returns:
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true if the surface has at least the c type continuity at the parameter t.
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Remarks:
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Overrides virtual ON_Surface::IsContinuous
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*/
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bool IsContinuous(
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ON::continuity c,
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double s,
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double t,
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int* hint = nullptr,
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double point_tolerance=ON_ZERO_TOLERANCE,
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double d1_tolerance=ON_ZERO_TOLERANCE,
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double d2_tolerance=ON_ZERO_TOLERANCE,
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double cos_angle_tolerance=ON_DEFAULT_ANGLE_TOLERANCE_COSINE,
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double curvature_tolerance=ON_SQRT_EPSILON
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) const override;
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bool Reverse( // reverse parameterizatrion, Domain changes from [a,b] to [-b,-a]
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int // dir 0 = "s", 1 = "t"
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) override;
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bool Transpose() override; // transpose surface parameterization (swap "s" and "t")
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bool Evaluate( // returns false if unable to evaluate
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double, double, // evaluation parameters
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int, // number of derivatives (>=0)
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int, // array stride (>=Dimension())
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double*, // array of length stride*(ndir+1)*(ndir+2)/2
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int = 0, // optional - determines which quadrant to evaluate from
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// 0 = default
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// 1 from NE quadrant
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// 2 from NW quadrant
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// 3 from SW quadrant
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// 4 from SE quadrant
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int* = 0 // optional - evaluation hint (int[2]) used to speed
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// repeated evaluations
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) const override;
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ON_Curve* IsoCurve(
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int, // 0 first parameter varies and second parameter is constant
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// e.g., point on IsoCurve(0,c) at t is srf(t,c)
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// 1 first parameter is constant and second parameter varies
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// e.g., point on IsoCurve(1,c) at t is srf(c,t)
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double // value of constant parameter
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) const override;
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int GetNurbForm( // returns 0: unable to create NURBS representation
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// with desired accuracy.
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// 1: success - returned NURBS parameterization
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// matches the surface's to wthe desired accuracy
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// 2: success - returned NURBS point locus matches
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// the surfaces's to the desired accuracy but, on
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// the interior of the surface's domain, the
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// surface's parameterization and the NURBS
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// parameterization may not match to the
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// desired accuracy.
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ON_NurbsSurface&,
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double = 0.0
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) const override;
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int HasNurbForm( // returns 0: unable to create NURBS representation
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// with desired accuracy.
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// 1: success - returned NURBS parameterization
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// matches the surface's to wthe desired accuracy
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// 2: success - returned NURBS point locus matches
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// the surfaces's to the desired accuracy but, on
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// the interior of the surface's domain, the
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// surface's parameterization and the NURBS
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// parameterization may not match to the
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// desired accuracy.
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) const override;
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bool GetSurfaceParameterFromNurbFormParameter(
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double nurbs_s, double nurbs_t,
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double* surface_s, double* surface_t
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) const override;
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bool GetNurbFormParameterFromSurfaceParameter(
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double surface_s, double surface_t,
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double* nurbs_s, double* nurbs_t
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) const override;
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/*
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Description:
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Removes the portions of the surface outside of the specified interval.
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Parameters:
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dir - [in] 0 The domain specifies an sub-interval of Domain(0)
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(the first surface parameter).
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1 The domain specifies an sub-interval of Domain(1)
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(the second surface parameter).
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domain - [in] interval of the surface to keep. If dir is 0, then
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the portions of the surface with parameters (s,t) satisfying
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s < Domain(0).Min() or s > Domain(0).Max() are trimmed away.
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If dir is 1, then the portions of the surface with parameters
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(s,t) satisfying t < Domain(1).Min() or t > Domain(1).Max()
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are trimmed away.
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*/
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bool Trim(
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int dir,
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const ON_Interval& domain
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) override;
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/*
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Description:
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Where possible, analytically extends surface to include domain.
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Parameters:
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dir - [in] 0 new Domain(0) will include domain.
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(the first surface parameter).
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1 new Domain(1) will include domain.
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(the second surface parameter).
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domain - [in] if domain is not included in surface domain,
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surface will be extended so that its domain includes domain.
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Will not work if surface is closed in direction dir.
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Original surface is identical to the restriction of the
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resulting surface to the original surface domain,
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Returns:
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true if successful.
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*/
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bool Extend(
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int dir,
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const ON_Interval& domain
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) override;
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/*
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Description:
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Splits (divides) the surface into two parts at the
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specified parameter.
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Parameters:
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dir - [in] 0 The surface is split vertically. The "west" side
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is returned in "west_or_south_side" and the "east"
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side is returned in "east_or_north_side".
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1 The surface is split horizontally. The "south" side
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is returned in "west_or_south_side" and the "north"
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side is returned in "east_or_north_side".
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c - [in] value of constant parameter in interval returned
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by Domain(dir)
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west_or_south_side - [out] west/south portion of surface returned here
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east_or_north_side - [out] east/north portion of surface returned here
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Example:
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ON_SumSurface srf = ...;
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int dir = 1;
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ON_SumSurface* south_side = 0;
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ON_SumSurface* north_side = 0;
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srf.Split( dir, srf.Domain(dir).Mid() south_side, north_side );
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*/
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bool Split(
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int dir,
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double c,
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ON_Surface*& west_or_south_side,
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ON_Surface*& east_or_north_side
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) const override;
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};
|
|
|
|
#endif
|