BREP(nged)
NAME
brep - This command does a boundary representation which represents the solid geometry by describing the topology and corresponding geometry.
DESCRIPTION
If obj is not a brep object, then brep attempts to convert it to a brep object. If brepname is given, then brep defaults to obj_brep; if --no-evaluation is given, then brep attempts to convert a combination to an unevaluated BREP named suffix (again defaulting to obj_brep).
Otherwise, the behavior of brep is determined by which of these subcommands is specified:
- info
-
Return count information (surfaces, curves, etc.) for a BREP.
- info C [index | index-index]
-
Return information for a specific BREP '3D curve'.
- info S [index | index-index]
-
Return information for a specific BREP 'surface'.
- info F [index | index-index]
-
Return information for a specific BREP 'face'.
- info T [index | index-index]
-
Return information for a specific BREP 'trim'.
- info E [index | index-index]
-
Return information for a specific BREP 'edge'.
- info TB [index | index-index]
-
Return information for a specific BREP 'piecewise bezier trim'.
- info SB [index | index-index]
-
Return information for a specific BREP 'piecewise bezier surface'.
- plot S [index | index-index]
-
Plot a specific BREP 'surface'.
- plot Suv {index | index-index}{u}{v}
-
Plot a specific BREP 'surface' 3d point at specified uv.
- plot UV {index | index-index}{u1}{u2}{v1}{v2}
-
Plot a specific BREP 'surface' 3d bounds at specified uv bounds.
- plot F [index | index-index]
-
Plot a specific BREP 'face'.
- plot I [index | index-index]
-
Plot a specific BREP 'isosurface'.
- plot SN [index | index-index]
-
Plot a specific BREP 'surface normal'.
- plot KN [index | index-index]
-
Plot a specific BREP 'surface knot'.
- plot F2d [index | index-index]
-
Plot a specific BREP 'face in 2d'.
- plot SBB [index | index-index]
-
Plot a specific BREP 'surfaceleafs'.
- plot SBB2d [index | index-index]
-
Plot a specific BREP 'surfaceleafs in 2d'.
- plot TD [index | index-index]
-
Plot a specific BREP 'trim direction'.
- plot T [index | index-index]
-
Plot a specific BREP 'trim'.
- plot T2d [index | index-index]
-
Plot a specific BREP 'trim in 2d'.
- plot TBB [index | index-index]
-
Plot a specific BREP 'trimleafs'.
- plot TBB2d [index | index-index]
-
Plot a specific BREP 'trimleafs in 2d'.
- plot E [index | index-index]
-
Plot a specific BREP 'edge3d'.
- plot SCV [index | index-index]
-
Plot a specific BREP 'nurbs control net'.
- flip
-
Flip all faces in the BREP (turns it 'inside out').
- translate {SCV} {index} {i} {j} {dx} {dy} {dz}
-
Translate a surface control vertex
- intersect {obj2} {i} {j} [PP | PC | PS | CC | CS | SS]
-
Visualize intersecting two BREP objects. The last argument specifies what portions of each to intersect; if it is not specified, it defaults to SS:
- PP
-
Intersect a point from the first object with a point from the second.
- PC
-
Intersect a point from the first object with a curve from the second.
- PS
-
Intersect a point from the first object with a surface from the second.
- CC
-
Intersect a curve from the first object with a curve from of the second.
- CS
-
Intersect a curve from the first object with a surface from the second
- SS
-
Intersect a surface from the first object with a surface from the second.
- u {obj2} {output}
-
Take the union of obj and obj2, storing the result in output.
- i {obj2} {output}
-
Take the intersection of obj and obj2, storing the result in output.
- - {obj2} {output}
-
Take the difference of obj and obj2, storing the result in output.
- x {obj2} {output}
-
Take the exclusive or of obj and obj2, storing the result in output.
- csg
-
Take the specified B-Rep and attempt to generate a CSG implicit boolean tree that will define the same solid shape.
EXAMPLES
mged> brep obj.randomobj info
This outputs general information about obj.randomobj, including counts of various entity types such as surfaces, curves, vertices, etc.
mged> brep obj.randomobj info F 2
Output info about the 2nd face of the BREP object obj.randomobj.
mged> brep obj.randomobj plot S 1-3
This plots the 1st through 3rd surfaces of obj.randomobj in the graphics display window.
mged> brep obj.randomobj intersect sph2.randomobj 2 4
This displays the intersection of obj.randomobj’s 2nd surface with sph2.randomobj’s 4th surface.
mged> brep obj.randomobj intersect sph2.randomobj 3 2 PC
This displays the intersection of obj.randomobj’s 3rd point with sph2.randomobj’s 2nd curve.
COPYRIGHT
This software is Copyright (c) 1989-2021 by the United States Government as represented by U.S. Army Research Laboratory.
BUG REPORTS
Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org