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SPAfct Class STL_MESH_MANAGER

SPAbase.ACIS_OBJECT
  |
  +---SPAfct.MESH_MANAGER
    |
    +---STL_MESH_MANAGER

Usage: you can derive this class.

public class STL_MESH_MANAGER

Writes data to an stl formatted file.

Role: The STL_MESH_MANAGER uses the "global indexed" protocol to write data to an stl formatted file. The application must identify the output file by calling the member function set_output_file.

See also:: REFINEMENT

Constructor and Destructor Index

o STL_MESH_MANAGER(REFINEMENT*): C++ constructor, creating a STL_MESH_MANAGER using the specified parameters.
o ~STL_MESH_MANAGER(): C++ destructor, deleting a STL_MESH_MANAGER.

Method Index

o announce_counts(int,int,int): Announces the number of polygons, nodes, and node references by polygons.
o announce_global_node(int,EDGE*,SPAposition&,double): Announces a node on a model EDGE with its curve parameter.
o announce_global_node(int,FACE*,SPAposition&,SPApar_pos&): Announces a node on a model FACE with its surface parameters.
o announce_global_node(int,VERTEX*,SPAposition&): Announces a node on a model VERTEX.
o announce_indexed_polynode(ENTITY*,int,int,void*): Return the number of indexes.
o announce_indexed_polynode(ENTITY*,int,int,void*,double&,SPApar_pos&,SPAposition&,SPAunit_vector&): Return the number of indexes.
o announce_indexed_polynode(int,int,void*): Return the number of indexes.
o check_applicable_refinement(ENTITY*,AF_SURF_MODE,REFINEMENT*&): Check for the applicable refinement.
o end_global_mesh_output(ENTITY*): Terminates global mesh output.
o end_indexed_polygon(int): This matches the immediately preceding call to start_indexed_polygon and the (multiple) calls to announce_indexed_polynode.
o need_global_indexed_polygons(): Get the globally indexed polygons.
o need_precount_of_global_indexed_polygons(): If this function returns TRUE, the number of polygons, nodes, and node references by polygons are announced before other output.
o null_node_id(): Returns the node id value that is guaranteed to be invalid.
o set_output_file(FILE*): Set the output file.
o start_indexed_polygon(int,int,int): Start the index.

Constructor and Destructor

o STL_MESH_MANAGER

public STL_MESH_MANAGER( REFINEMENT* R =NULL)

C++ constructor, creating a STL_MESH_MANAGER using the specified parameters.

Parameters:

R: refinement.

o ~STL_MESH_MANAGER

public ~STL_MESH_MANAGER(

)

C++ destructor, deleting a STL_MESH_MANAGER.

Methods

o announce_counts

public virtual void announce_counts(	int	`npoly`,
	int	`nnode`,
	int	`npolynode`)

Announces the number of polygons, nodes, and node references by polygons.

Parameters:

npoly: number of polygons to follow.
nnode: # nodes to follow.
npolynode: number of nodes when counted each time they are used by a polygon.

o announce_global_node

public virtual void * announce_global_node(	int	`inode`,
	EDGE*	`edge`,
	const SPAposition&	`iX`,
	double	`t`)

Announces a node on a model EDGE with its curve parameter.

Parameters:

inode: integer.
edge: edge.
iX: node coordinates.
t: curve parameter.

o announce_global_node

public virtual void * announce_global_node(	int	`inode`,
	FACE*	`face`,
	const SPAposition&	`iX`,
	const SPApar_pos&	`uv`)

Announces a node on a model FACE with its surface parameters.

Parameters:

inode: integer.
face: face.
iX: node coordinates.
uv: surface parameter.

o announce_global_node

public virtual void * announce_global_node(	int	`inode`,
	VERTEX*	`ver`,
	const SPAposition&	`iX`)

Announces a node on a model VERTEX.

Parameters:

inode: integer.
ver: vertex.
iX: node coordinates.

o announce_indexed_polynode

public virtual void announce_indexed_polynode(	ENTITY*	`ent`,
	int	`ipoly`,
	int	`i`,
	void*	`pnode`)

Return the number of indexes.

Parameters:

ent: coedge along the edge following the polynode.
ipoly: polygon index.
i: local node index.
pnode: node identifier.

o announce_indexed_polynode

public virtual void announce_indexed_polynode(	ENTITY*	`E`,
	int	`ipoly`,
	int	`i`,
	void*	`id`,
	const double&	`edge_tpar`,
	const SPApar_pos&	`uv`,
	const SPAposition&	`X_arg`,
	const SPAunit_vector&	`N`)

Return the number of indexes.

Parameters:

E: coedge along the edge following the polynode.
ipoly: polygon index.
i: local node index.
id: node identifier.
edge_tpar: if the node lies on an edge then returns tpar.
uv: parametric coordinates.
X_arg: Cartesian coordinates.
N: surface normal.

o announce_indexed_polynode

public virtual void announce_indexed_polynode(	int	`ipoly`,
	int	`i`,
	void*	`pnode`)

Return the number of indexes.

Parameters:

ipoly: 0-based polygon index. Same as immediately preceding call to start_indexed_polygon.
i: 0-based counter within the polygon. This increments sequentially on successive calls.
pnode: Node identifier as previously rcvd from announce_indexed_node.

o check_applicable_refinement

public virtual void check_applicable_refinement(	ENTITY*	`refent`,
	AF_SURF_MODE	`surfmode`,
	REFINEMENT*&	`ref`)

Check for the applicable refinement.

Parameters:

refent: entity with refinement.
surfmode: refinement surface type.
ref: refinement.

o end_global_mesh_output

public virtual void end_global_mesh_output( ENTITY* topent)

Terminates global mesh output.

Parameters:

topent: Top level entity being faceted.

o end_indexed_polygon

public virtual void end_indexed_polygon( int ipoly)

This matches the immediately preceding call to start_indexed_polygon and the (multiple) calls to announce_indexed_polynode.

Parameters:

ipoly: polygon index.

o need_global_indexed_polygons

public virtual logical need_global_indexed_polygons(

)

Get the globally indexed polygons.

o need_precount_of_global_indexed_polygons

public virtual logical need_precount_of_global_indexed_polygons(

)

If this function returns TRUE, the number of polygons, nodes, and node references by polygons are announced before other output.

Role: The default returns FALSE.

o null_node_id

public virtual void * null_node_id(

)

Returns the node id value that is guaranteed to be invalid.

Role: Applications using indices will typically return -1. Applications using pointers will typically return 0. The default returns -1.

o set_output_file

public void set_output_file( FILE* fp = stdout)

Set the output file.

Parameters:

fp: file.

o start_indexed_polygon

public virtual void start_indexed_polygon(	int	`ipoly`,
	int	`npolynode`,
	int	`ishare`	`=-2` )

Start the index.

Parameters:

ipoly: polygon index.
npolynode: number of polynodes.
ishare: info about which edge of previous polygon is shared with this one.

This object is included in the file: stlmmg.hxx