bgnpoi(3G)bgnpoi(3G)NAME
bgnpoi, endpoi - delimit the interpretation of vertex routines as points
FORTRAN 77 SPECIFICATION
subroutine bgnpoi
subroutine endpoi
PARAMETERS
none
DESCRIPTIONbgnpoi marks the beginning of a list of vertex routines that you want
interpreted as points. Use the endpoi routine to mark the end of the
list. For each vertex, the system draws a one-pixel point into the frame
buffer. Use the v routine to specify a vertex.
Between bgnpoi and endpoi, you can issue only the following Graphics
Library routines: c, color, cpack, lmbind, lmcolo, lmdef, n, RGBcol, t,
and v. Use lmdef and lmbind to respecify only materials and their
properties.
There is no limit to the number of vertices that can be specified between
bgnpoi and endpoi.
By default points are forced to the nearest pixel center prior to scan
conversion. This coercion is defeated with the subpix command. Subpixel
point positioning is important only when points are scan converted with
antialiasing enabled (see pntsmo).
After endpoi, the current graphics position is the most recent vertex.
NOTE
On Impact and Infinite Reality lmcolo cannot be called between bgnpoi and
endpoi
SEE ALSO
c, pntsmo, subpix, v
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