2012

Table Of Contents
analytic surfaces are separated or by using the BREP command. See also
procedural surface and NURBS surface.
geometric constraint
Rules that define the geometric relationships of objects (or points of objects)
elements and control how an object can change shape or size.
Geometric constraints are coincident, collinear, concentric, equal, fix,
horizontal, parallel, perpendicular, tangent, and vertical.
geometry
All graphical objects such as lines, circles, arcs, polylines, and dimensions.
Nongraphical objects, such as linetypes, lineweights, text styles, and layers
are not considered geometry. See also named object.
gizmo
A tool that permits you to manipulate a 3D object uniformly or along a
specified axis or plane. Examples of gizmos include the 3D Move, 3D Rotate,
and 3D Scale gizmos. They are displayed when you select a 3D object.
global illumination
An indirect illumination technique that allows for effects such as color
bleeding. As light hits a colored object in the model, photons bounce to
adjacent objects and tint them with the color of the original object.
Gooch shading
A type of shading that uses a transition from cool to warm colors rather than
from dark to light.
graphics area
See drawing area.
graphics window
See AutoCAD for Mac window and drawing area.
grid
An area covered with regularly spaced dots or lines to aid drawing. The grid
spacing is adjustable. The grid dots are never plotted. See also grid limits.
(GRID)
grid limits
The user-defined rectangular boundary of the drawing area covered by dots
when the grid is turned on. Also called drawing limits. (LIMITS)
844 | Glossary