2011

PC3 file Partial plotter configuration file. PC3 files contain plot settings information such
as the device driver and model, the output port to which the device is connected, and various
device-specific settings, but do not include 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.
1614 | Chapter 51 Glossary