铁砧
发表于 2025-3-30 10:15:01
Simple Hidden Line and Surface Algorithms, will obviously restrict the view of the facets (and boundary lines) at the back. In order to produce such a picture we must introduce an algorithm which determines which parts of a surface or line are visible and which are not. Such algorithms are called hidden surface or hidden line algorithms, de
collagenase
发表于 2025-3-30 12:21:42
Perspective and Stereoscopic Projections,ugh they have their uses, such views do look odd! Our view of space is based upon the concept of .. Our brains attempt to interpret orthographic figures as if they are perspective views, making the cubes of figure 8.1, for instance, look distorted.
马赛克
发表于 2025-3-30 18:00:17
A More General Hidden Line Algorithm,rence for the monochrome line-drawing . type output. In this chapter we discuss a general hidden line algorithm which, using line-drawing routines only, can produce architectural designs, machine-parts etc., with any line in the scene, which is blocked from view by the bulk of other objects, being s
错事
发表于 2025-3-30 22:50:15
A More General Hidden Surface Algorithm,ectangular array representing the totality of pixels on the screen. We imagine rays of light entering the eye through each of the pixels on the screen. These rays naturally pass through objects in our scene and we can note the co-ordinates of these points of intersection. The array will hold the ‘.
Legion
发表于 2025-3-31 03:30:59
Three-dimensional Clipping,ensions .. These methods are also sufficient for dealing with orthographic projections of three-dimensional scenes since the whole of space can be projected onto the view plane and clipped in two dimensions. Dealing with perspective projections is rather more complex. Once again we assume that we ha
Junction
发表于 2025-3-31 06:29:25
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ALLAY
发表于 2025-3-31 12:00:20
Shadows, Transparent Surfaces and Reflections,gonal facet, J, onto another convex polygonal facet, I, is also a convex polygon which may be considered to lie on the surface of facet I. We call this polygon a .. The amount of light reflected from a point in shadow was discussed in chapter 15: in this chapter we turn our attention to the finding
伴随而来
发表于 2025-3-31 16:40:49
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Gene408
发表于 2025-3-31 18:38:03
Projects,h Discrete and Continuous graphs. An example of a discrete graph is given in figure 18.1. Note you must be able to add text to your diagrams, and also have a facility for drawing labelled axes as well as the option of drawing in various graphics modes (XOR etc.). See Angell (1985) for an implementat
PAGAN
发表于 2025-3-31 23:20:43
Ian O. Angell,Gareth Griffithors of the field.The authors encapsulate various ways of looThis volume addresses the creation, documentation, preservation, and study of the archaeology of lunar, planetary, and interstellar exploration. It defines the attributes of common human technological expressions within national and, increa