edge Struct Reference
[N-Manifold Geometry]

#include <nmg.h>

Collaboration diagram for edge:

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Data Fields
long	magic
edgeuse *	eu_p
	Ptr to one use of this edge.
long	is_real
	artifact or modeled edge (from tessellator)
long	index
	struct # in this model

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Detailed Description

E D G E

To find all edgeuses of an edge, use eu_p to get an arbitrary edgeuse, then wander around either eumate_p or radial_p from there.

Only the first vertex of an edge is kept in an edgeuse (eu->vu_p). The other vertex can be found by either eu->eumate_p->vu_p or by BU_LIST_PNEXT_CIRC(edgeuse,eu)->vu_p. Note that the first form gives a vertexuse in the faceuse of *opposite* orientation, while the second form gives a vertexuse in the faceuse of the correct orientation. If going on to the vertex (vu_p->v_p), both forms are identical.

An edge_g_lseg structure represents a line in 3-space. All edges on that line should share the same edge_g.

An edge occupies the range eu->param to eu->eumate_p->param in it's geometry's parameter space. (cnurbs only)

Definition at line 493 of file nmg.h.

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Field Documentation

long magic

Definition at line 494 of file nmg.h. Referenced by nmg_edge_collapse(), nmg_isect2d_prep(), nmg_me(), nmg_meonvu(), nmg_model_edge_fuse(), nmg_pr_e(), nmg_unglueedge(), and rt_nmg_ialloc().

struct edgeuse* eu_p

Ptr to one use of this edge. Definition at line 495 of file nmg.h. Referenced by nmg_break_edge_at_verts(), nmg_class_pt_lu_except(), nmg_edge_collapse(), nmg_eusplit(), nmg_find_ot_same_eu_of_e(), nmg_find_top_face_in_dir(), nmg_je(), nmg_keu(), nmg_me(), nmg_meonvu(), nmg_model_edge_fuse(), nmg_pl_e(), nmg_pr_e(), nmg_unglueedge(), nmg_vedge(), nmg_vlblock_e(), and rt_nmg_idisk().

long is_real

artifact or modeled edge (from tessellator) Definition at line 496 of file nmg.h. Referenced by nmg_edge_collapse(), nmg_meonvu(), rt_nmg_edisk(), rt_nmg_idisk(), and tesselate_pipe_end().

long index

struct # in this model Definition at line 497 of file nmg.h. Referenced by nmg_model_edge_fuse(), nmg_pl_e(), and nmg_vlblock_e().

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

• include/nmg.h

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