21. Therefore, when modeling longer frustums the measurer needs to perform independent checks to insure that the right solid has been chosen. 22. Add a frustum ( pyramid with the top cut off ) below the prism and you get another infinite family, and so on. 23. It is formed by a clipped pyramid; in particular, " frustum culling " is a method of hidden surface determination. 24. They attached a mount to handrails on the frustum linking the multiport docking unit to the small-diameter portion of the work compartment. 25. One problem is considered to be of particular importance because it gives a method for finding the volume of a frustum ( truncated pyramid ). 26. The term is commonly used in computer graphics to describe the viewing frustum , the three-dimensional region which is visible on the screen. 27. Some authors use " pyramid of vision " as a synonym for view frustum itself, i . e . consider it truncated. 28. The handsome, white clapboard building features a tripartite facade, the central section of which is a frustum that rises to support the cupola. 29. However, there is a data overhead from objects on frustum boundaries being replicated and data has to be loaded dynamically as the view point changes. 30. Some figures have two parallel bases ( such as trapezoids and frustums ), both of which are used to calculate the extent of the figures.
