In 3D computer graphics, hidden surface determination (also known as hidden surface removal (HSR), occlusion culling (OC) or visible surface determination (VSD)) is the process used to determine which surfaces and parts of surfaces are not visible from a certain viewpoint. A hidden surface determination algorithm is a solution to the visibility problem, which was one of the first major problems in the field of 3D computer graphics. The process of hidden surface determination is sometimes called hiding, and such an algorithm is sometimes called a hider. The analogue for line rendering is hidden line removal. Hidden surface determination is necessary to render an image correctly, so that one cannot look through walls in Virtual Reality.
It's used to get a straight guidance line across a long surface. By snapping it the string deposits chalk - and you have your line. A great and very time saving invention !
There are three major kinds of surface development 1. parallel line development 2. radial line development 3. triangulation development By: Ossan abad
The frost line depth for the Ottawa-Montreal area ranges from 1.4m to 1.5m below surface elevation.
Frost line depth is measured from grade (or lowest surface soil level pursuant to the foundation).
not one circularity that is section of cylindrical surface with in any one of line with in as per tolerance on axis , and cylindrical not one that is entire surface required of with in tolerance according in the axis that is difference
A hidden line is a line that cannot be seen.
Since you can't see the hidden surface, from your point of view, then the graphics system should not (normally) display the hidden surface except (optionally) to display dashed lines for hidden edges and dashed dimension lines to hidden edges.
The hidden line is drawn, however, the edges of the center line can still be seen ( the center line ends up appearing as extra long dashes on either side of the end of the hidden line)
Posined gas.
it is a line that is not visible but it is there it is like air
A line that you draw but cant be very well seen.
Line a surface is made up of lines...a line is made up of points. :)
an anti-aliased hidden surface method
Ralph Lauren has a line of wallets that have secret hidden components sewed into them.
On engineering drawings, the priority hierachy is object line, hidden line, center line. A centerline can be drawn extending beyond the physical edges of the part, a hidden line cannot. The hidden line (equally spaced short dashes) is drawn on the part instead of the centerline (alternating long dash, short dash, long dash)when the two lines are stacked in a view. If an object line, hidden line and center line are stacked in a view, the object line takes priority and is shown on the drawing. The centerline in both instances can be shown extending beyond the part edges for clarity.
The line perpendicular to a surface at a point is called the normal
A line with equal angles from a surface is referred to as being normal