Name
bol — Border line
Syntax
bol [linewidth] [nrg] [sav] [tub] [col] [edge] [fang] [flat] [nodraw]
Description
Generate and draw a border line around a grid or a triangle structure. The border line may be used to outline the grid for display purposes, or it may be extracted as a separate dataset (argument nrg) for further use.
Arguments
linewidth
Draw border line with line width linewidth where linewidth is [1, 2, 3 ..]. 1 is the thinnest line, one pixel in width.
nrg
Apply no regridding (decimation) of the grid.
col red | blu | gre |pin | tur | yel | whi | bla | bro
Display the border line in color red / blue / green / pink / turquoise / yellow / white / black / brown
sav
Save the border line in workspace ^bol. Make it active by mlo ^bol.
tub [factor]
Display border line as a tube. The factor is a number larger than 0, relative to 1 (default), giving the thickness of the tube.
edge
Display internal and external edges of the dataset.
fang feature_angle
Controls the edge finding property. feature_angle is ...? The old Geocap logo uses fang 60.
flat level
The border line result is displayed at z-level level. E.g. bol flat 200 will display the border line at z=200.
nodraw
No display of border result. Often used with argument sav, where the border line is saved in a workspace.
Examples
Ex.1: Borderline around grid
# read any grid bol 3 col red col bla pol x sel 10 ;# draw every 10th gridline in x-direction col bla pol y sel 10 ;# draw every 10th gridline in y-direction
Red border line from bol 3 col red
Ex.2: Border line in old logo
scaz off ;# set scale in z to default d3 ;# set to 3d upd u ;# set z direction upwards z ;# blank screen rea $Geocap::geocapdir/data/logo_text.vtk ;# read text win -100 100 -100 100 0 100 ;# set window col .6 .7 .9 ;# set rgb color bol tub fang 60 ;# border of logo-text rea $Geocap::geocapdir/data/logo.vtk ;# read logo col whi ;# set color to white cur ;# draw spline
Old Geocap logo, using bol
Border line in blue drawn around a grid