2011

any custom plotter calibration or custom paper size information. See also PMP
file, STB file, and CTB file.
perspective view Objects in 3D seen by an observer positioned at the
viewpoint looking at the view center. Objects appear smaller when the distance
from the observer (at the view point) to the view center increases. Although
a perspective view appears realistic, it does not preserve the shapes of objects.
Parallel lines seemingly converge in the view. The program has perspective
view settings for VPORTS table entries as well as viewport objects.
photometric lights Photometric lights are physically-correct lights. Physically
correct lights attenuate as the square of the distance. Photometry is the science
of measurement of visible light in terms of its perceived brightness.
photorealistic rendering Rendering that resembles a photograph.
pick button The button on a pointing device that is used to select objects or
specify points on the screen. For example, on a two-button mouse, it is the
left button by default.
pick points Clicking and acquiring a point on an object in the drawing.
plan view A view orientation from a point on the positive Z axis toward the
origin (0,0,0). (PLAN)
planar face A flat face that can be located anywhere in 3D space.
planar projection Mapping of objects or images onto a plane.
planar surface A flat surface that can be located anywhere in 3D space.
(PLANESURF)
pline See polyline.
plot style An object property that specifies a set of overrides for color,
dithering, gray scale, pen assignments, screening, linetype, lineweight,
endstyles, joinstyles, and fill styles. Plot styles are applied at plot time.
Glossary | 1025