nurbs_curve Type Reference

Detailed Description

CAD curve class.

Inheritance diagram for nurbs_curve:

Public Member Functions
procedure	eval (self, pt, u, v)
	Parametric point evaluation.
procedure(nurbs_dummy_eval), deferred	eval (self, pt, u, v)
	Parametric point evaluation.
procedure	grid (self)
	Generate grid over curve domain.
procedure(nurbs_dummy_grid), deferred	grid (self)
	Physical point location.
procedure	locate (self, pt, u, v, ierr)
	Physical point location.
procedure(nurbs_dummy_find), deferred	locate (self, pt, u, v, ierr)
	Physical point location.
procedure	unwrap (self, u1, u2, v1, v2)
	Parametric point evaluation.
procedure(nurbs_dummy_unwrap), deferred	unwrap (self, u1, u2, v1, v2)
	Parametric point evaluation.
procedure	wrap (self, u, v)
	Physical point location.
procedure(nurbs_dummy_wrap), deferred	wrap (self, u, v)
	Parametric point evaluation.

Public Attributes
integer(i4)	cid
	Curve ID in OFT indexing.
real(r8), dimension(3)	coord_scales = 1.d0
	Scaling for each coordinate.
real(r8), dimension(2)	domain
	Extent in parametric domain.
integer(i4)	id
	Input ID of CAD object.
logical	linear = .FALSE.
	Curve is straight.
integer(i4)	nspan
	Size of span vector.
logical	periodic = .FALSE.
	Curve is periodic.
integer(i4)	reflect = -1
	Index to reflect.
real(r8), dimension(3, nurbs_ngrid)	rgrid
	Object mesh.
real(r8), dimension(:), pointer	span
	Currently unused.

Member Function/Subroutine Documentation

eval() [1/2]

procedure eval	(	class(nurbs_curve), intent(in)	self,
		real(r8), dimension(3), intent(out)	pt,
		real(r8), intent(in)	u,
		real(r8), intent(in)	v )

Parametric point evaluation.

• (u,v) -> (x,y,z)

  Parameters

  [out]	pt	Position vector [3]
  [in]	u	Parametric coordinate 1
  [in]	v	Parametric coordinate 2 (ignored)

eval() [2/2]

procedure(nurbs_dummy_eval), deferred eval ( class(nurbs_entity), intent(in) self, real(r8), dimension(3), intent(out) pt, real(r8), intent(in) u, real(r8), intent(in) v )

pure virtualinherited

Parametric point evaluation.

Parameters

[in]	self	NURBS object
[out]	pt	Evaluated position [3]
[in]	u	Parametric coordinate 1
[in]	v	Parametric coordinate 2 (unused if curve)

grid() [1/2]

procedure grid

(

class(nurbs_curve), intent(inout)

self

)

Generate grid over curve domain.

Parameters

[in,out]

self

Curve object

grid() [2/2]

procedure(nurbs_dummy_grid), deferred grid ( class(nurbs_entity), intent(inout) self )

pure virtualinherited

Physical point location.

Parameters

[in,out]

self

NURBS object

locate() [1/2]

procedure locate	(	class(nurbs_curve), intent(in), target	self,
		real(r8), dimension(3), intent(in)	pt,
		real(r8), intent(out)	u,
		real(r8), intent(out)	v,
		integer(i4), intent(out)	ierr )

Physical point location.

• (x,y,z) -> (u,v)

  Parameters

  [in]	pt	Position vector [3]
  [out]	u	Parametric coordinate 1
  [out]	v	Parametric coordinate 2 (ignored)
  [out]	ierr	Error status

locate() [2/2]

procedure(nurbs_dummy_find), deferred locate ( class(nurbs_entity), intent(in), target self, real(r8), dimension(3), intent(in) pt, real(r8), intent(out) u, real(r8), intent(out) v, integer(i4), intent(out) ierr )

pure virtualinherited

Physical point location.

Parameters

[in]	self	NURBS object
[in]	pt	Test position [3]
[out]	u	Parametric coordinate 1
[out]	v	Parametric coordinate 2 (unused if curve)
[out]	ierr	Error status (point not found if ierr<0)

unwrap() [1/2]

procedure unwrap	(	class(nurbs_curve), intent(in)	self,
		real(r8), intent(inout)	u1,
		real(r8), intent(inout)	u2,
		real(r8), intent(inout)	v1,
		real(r8), intent(inout)	v2 )

Parametric point evaluation.

• Example: For a periodic domain of \( [0,2 \pi] (3 \pi/4,0) -> (-\pi/4,0) \)

  Parameters

  [in]	self	Curve object
  [in,out]	u1	Parametric coordinate 1 of first point
  [in,out]	u2	Parametric coordinate 2 of first point (unused)
  [in,out]	v1	Parametric coordinate 1 of second point
  [in,out]	v2	Parametric coordinate 2 of second point (unused)

unwrap() [2/2]

procedure(nurbs_dummy_unwrap), deferred unwrap ( class(nurbs_entity), intent(in) self, real(r8), intent(inout) u1, real(r8), intent(inout) u2, real(r8), intent(inout) v1, real(r8), intent(inout) v2 )

pure virtualinherited

Parametric point evaluation.

Parameters

[in]	self	NURBS object
[in,out]	u1	Parametric coordinate 1 of first point
[in,out]	u2	Parametric coordinate 2 of first point (unused if curve)
[in,out]	v1	Parametric coordinate 1 of second point
[in,out]	v2	Parametric coordinate 2 of second point (unused if curve)

wrap() [1/2]

procedure wrap	(	class(nurbs_curve), intent(in)	self,
		real(r8), intent(inout)	u,
		real(r8), intent(inout)	v )

Physical point location.

• Example: For a periodic domain of \( [0,2 \pi] (-\pi/4,0) -> (3 \pi/4,0) \)

Parameters

[in,out]	u	Parametric coordinate 1
[in,out]	v	Parametric coordinate 2 (unused)
[in]	self	Curve object
[in,out]	u	Parametric coordinate 1
[in,out]	v	Parametric coordinate 2 (unused)

wrap() [2/2]

procedure(nurbs_dummy_wrap), deferred wrap ( class(nurbs_entity), intent(in) self, real(r8), intent(inout) u, real(r8), intent(inout) v )

pure virtualinherited

Parametric point evaluation.

Parameters

[in]	self	NURBS object
[in,out]	u	Parametric coordinate 1
[in,out]	v	Parametric coordinate 2 (unused if curve)

Member Data Documentation

cid

integer(i4) cid

Curve ID in OFT indexing.

coord_scales

real(r8), dimension(3) coord_scales = 1.d0

inherited

Scaling for each coordinate.

domain

real(r8), dimension(2) domain

Extent in parametric domain.

id

integer(i4) id

inherited

Input ID of CAD object.

linear

logical linear = .FALSE.

Curve is straight.

nspan

integer(i4) nspan

Size of span vector.

periodic

logical periodic = .FALSE.

Curve is periodic.

reflect

integer(i4) reflect = -1

inherited

Index to reflect.

rgrid

real(r8), dimension(3,nurbs_ngrid) rgrid

Object mesh.

span

real(r8), dimension(:), pointer span

Currently unused.

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The documentation for this type was generated from the following file:

• /home/runner/work/OpenFUSIONToolkit/OpenFUSIONToolkit/src/grid/nurbs_cad.F90