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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.
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What is a Retractable Chalk Line used for and why must it be snapped against a surface?
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 !
What is the 3 basic types of surface development?
There are three major kinds of surface development 1. parallel line development 2. radial line development 3. triangulation development By: Ossan abad
What is thew frost line depth in Ottawa?
The frost line depth for the Ottawa-Montreal area ranges from 1.4m to 1.5m below surface elevation.
Do you measure frost depth line from the top or the bottom of the foundation?
Frost line depth is measured from grade (or lowest surface soil level pursuant to the foundation).
What is the difference between circularity and cylindricity?
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
What does hidden line mean?
A hidden line is a line that cannot be seen.
Why hidden surface should be removed in graphics system?
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.
If a center line and a hidden line coincide with one another which line is drawn?
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)
What is the definition for hidden line?
it is a line that is not visible but it is there it is like air
What is the difference between a hidden surface and an invisible surface?
A hidden surface refers to a surface that is obscured from view by other objects in a scene, while an invisible surface is one that is intentionally made invisible or transparent, such as a glass pane. Hidden surfaces can be revealed by changing the camera angle, whereas invisible surfaces are typically always transparent.
What is the surface of venus hidden by?
Posined gas.
What is hidden line?
A line that you draw but cant be very well seen.
In Engineering drawing when the center line and the hidden lines lie on the same line which would be given priority?
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.
Which wallets have hidden components?
Ralph Lauren has a line of wallets that have secret hidden components sewed into them.
What is th definition for hidden lines?
the line which is not seen
What is A-BUFFER method?
an anti-aliased hidden surface method
What is meant by precedence of lines?
This phrase is used when obtaining orthographic views. It is common for one type of line to overlap another. For instance, a continuous line might be in the same location as a hidden line. For this reason, there is an order of precedence in terms of drawing conventions and standards. Typically the continuous line will have greater value or will "take precedence" over the hidden line, while the hidden line will take precedence over the centerline.
