BREP PLOT nged BRL-CAD BRL-CAD MGED User Commands
brep plot Plot specific components of brep objects in a 3D scene.
`brep` obj `plot` C2|C3|E|F|F2d|FSBB|FSBB2d|FTBB|FTBB2d|FTD|I|L|L2d|S|SCV|SK|SK2d|SN|SUV|SUVP|T|T2d|V|CDT|CDT2d|CDTw arguments

## DESCRIPTION

If obj is not a brep object, then report that fact and exit. Otherwise, generate 3D scene visuals of the specified obj brep data. Note that the user may need to use `autoview` to center the view on the plotted data; the command does not automatically do so, in order to allow for debugging scenarios where it is desirable to maintain a fixed view.

This command has quite a few subcommands, as it is the primary means in BRL-CAD for visually inspecting properties of BRep objects:

`C2` index[,index...] index-index

  Plot one or more 2D parametric space geometric curves.

`C3` index[,index...] index-index

  Plot one or more 3D geometric curves.

`E` index[,index...] index-index

  Plot one or more topological 3D edges.

`F` index[,index...] index-index

  Plot one or more topological faces.

`F2d` index[,index...] index-index

  Plot one or more topological faces in 2D parametric space.

`FSBB` index[,index...] index-index

  Plot one or more face's surface bounding boxes (used for ray intersection testing).

`FSBB2d` index[,index...] index-index

  Plot one or more face's surface bounding boxes in 2D (used for ray intersection testing).

`FTBB` index[,index...] index-index

  Plot one or more face trim's bounding boxes in 3D.

`FTBB2d` index[,index...] index-index

  Plot one or more face trim's bounding boxes in 2D parametric space.

`FTD` index[,index...] index-index

  Plot one or more face trim's direction - geometric curves will have one direction as part of their definition, but such curves may be re-used by trims and those trims may indicate their own direction independent of the curve.

`I` index[,index...] index-index

  Plot one or more surface's isosurface curves.

`L` index[,index...] index-index

  Plot one or more topological trimming loops in 3D.

`L2d` index[,index...] index-index

  Plot one or more topological trimming loops in 2D parametric space.

`S` index[,index...] index-index

  Plot one or more untrimmed surfaces.

`SCV` index[,index...] index-index

  Plot one or more surface's control vertex mesh.

`SK` index[,index...] index-index

  Plot one or more surface's knots in 3D.

`SK2d` index[,index...] index-index

  Plot one or more surface's knots in 2D parametric space.

`SN` index[,index...] index-index

  Plot one or more surface's normal vectors.

`SUV` index[,index...] index-index

  Plot one or more surface's UV bounds.

`SUVP` index[,index...] index-index

  Plot a surface's 3D point at the specified 2D parametric space UV coordinates.

`T` index[,index...] index-index

  Plot one or more topological trims in 3D.

`T2d` index[,index...] index-index

  Plot one or more topological trims in 2D parametric space.

`V` index[,index...] index-index

  Plot one or more 3D vertices.

`CDT` index[,index...] index-index

  Plot the shaded view of a constrained Delaunay triangulation of one or more BRep faces.

`CDT2d` index[,index...] index-index

  Plot the constrained Delaunay triangulation of one or more BRep faces in 2D parametric space.

`CDTw` index[,index...] index-index

  Plot the wireframe view of a constrained Delaunay triangulation of one or more BRep faces.

## EXAMPLES

Plot single face

mged> `brep Brep_1.s plot F 1`

Plots the various loops making up the definition of Face 1 in Brep_1.s

Plot a range of faces

mged> `brep Brep_1.s plot F 1-10`

Plots the various loops making up the definition of faces 1 to 10 in Brep_1.s

Plot a list of faces

mged> `brep Brep_1.s plot F 1,3,5,10`

Plots the various loops making up the definition of faces 1, 3, 5 and 10 in Brep_1.s

## AUTHOR

BRLCAD-TEAM

## BUG REPORTS

Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org