computer graphics c version phần 9 potx
computer graphics c version phần 9 potx
... surface. Figure 14-60 shows a ray-traced scene containing multiple objects and texture patterns. Reducing Object-Intersection Calculations Raysurface intersection calculations can account ... purity with the chromaticity diagram. C, . Color C, can then be represented as a combination of white light C and the spectral color C, . Thus, the dominant wavelength of C, is C, . This method ... reduce intersection calculations, is to use space-subdivision meth- ods. We can enclose a scene within a cube, then we successively subdivide the cube until each subregion (cell) contains no more...
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computer graphics c version phần 1 ppsx
... focusing, deflection of the electron beam can be controlled either with electric fields or with magnetic fields. Cathode-ray tubes are now commonl!. constructed with magnetic deflection coils ... earth's surface by Tom Palmer, Cray Research Inc./NCSC; Chris Landreth, NCSC; and Dave W, NCSC. Pollutant SO, is plotted as a blue surface, acid-rain deposition is a color plane ... action of the electrostatic lens fdcuses the electron beam at the center of the screen, in exactly the same way that an optical lens focuses a beam of hght at a particular focal dis- tance....
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computer graphics c version phần 2 pot
... geometric components of pictures. Additional output primitives that can be used to construct a picture include circles and other conic sections, quadric surfaces, spline curves and surfaces, polygon ... device inter- face methods is given in the Computer Graphics Interface (CGI) system. And the Computer Graphics Metafile (CGM) system specifies standards for archiv- ing and transporting pictures. ... http://www.simpopdf.com3-5 CIRCLE-GENERATING ALGORITHMS Since the circle is a frequently used component in pictures and graphs, a proce- dure for generating either full circles or circular arcs is included...
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computer graphics c version phần 3 docx
... where text color piramcter tc specifies an allowable color code. We can adj~~st text size by scaling theoverall dimensions (height and width) of characters or by scaling only the character width. ... a curve, ci\rcles (or markers), and text. ?hftesy of Wolfmrn hrch, Inc., The Mah of Malhtica.J Additional primitives available in graphics packages include cell arrays, character ... tint n, wcPt2 pts) Draw a connected sequence of n-1 line segments, specified in pts . pCircle (wcPt2 center, float r) Draw a circle of radius r at center. ppillarea (int n, wcPt2 pts)...
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computer graphics c version phần 4 pptx
... lines arc then processed through the intersection calculations, which must solve simultaneous circle-line equations Splitting Concave Polygons We can identify a concave polygon by calculating ... Area Clipping (polygons) Curve Clipping Text Clipp~ng Line and polygon clipping routines are standard components of graphics pack- ages, but many packages accommodate curved objects, particularly ... see Blinn (I977 and 197 8). Transformation functions in PHlGS are dixusscd in Hopgood and Duce ( 199 1), I loward et al. ( 199 1), Caskins ( 199 2), and Blake ( 199 3). For information...
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computer graphics c version phần 7 pdf
... Koh and Hearn ( 199 2). and Barnslev ( 199 31. Shape grammars are d~cc u5wtl In Llassner I 199 21, and particle systems are discussed in Rewes ( 198 11 A cliccus51on or phy51callu I),~wi rnoddinq ... orthographic projection is callcd a \hri :Gi13. Engineering and architectr~ral drawings commonly employ these orthographic projritions, because lengths and angles are accurately de- yictc,d and can ... 1c. O; C& lt;4; c+ +I trnp[r] [cl = a[rl IOI'blO] [cl + alrl Ill'b !I [cl + a[r] [2Ji1[2! Ic] + alr] [3l*b[3] [cl: for (r=O; r<4: r*+l for (c= S: cc4; c* +) blri lc:...
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computer graphics c version phần 8 docx
... track of which surface section is visible on each scan line. This works only if surfaces do not cut through or otherwise cyclically overlap each other (Fig. 13-11). If any kind of cyclic ... algorithms include Elber and Cohen (1 99 0). Franklin and Kankanhalli ( 199 01. Glassner ( 199 0). Naylor, Amanatides, and Thibault ( 199 01, and Segal ( 199 0). EXERCISES 13-1. Develop a procedure, ... dl. ( 199 1). Gaskins ( 199 2). and Blake ( 199 3). Discussions of three-dimensional clipping and viewing algorithms can be found in Blinn and Newell ( 197 8). Cyrus and Beck ( 197 8), Riesenfeld...
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computer graphics c version phần 10 ppsx
... Computa Graphics Interface (CGI), 79 Computer Graphio Metafile (CGM), 79 Concatenahon (matrix), 191 ,612-13 Concave polygon splitting, 235-37 Cone filter, 174, 175 Cone receptors, 572 Cone ... (International Commirs~on on Illumination), w Circle equation CaResian, 97 nonparametnc, 97 ,6 19 parametric. 97 ,6 19 polar, 97 Circle-generating algonthms, 97 -102 Bresenham, 98 midpoint, 98 - 102 ... proceedings of SIG- GRAPH '86, Computer Graphics, 20(4), pp. 85 -94 . YACEL, R., D. COHEN, AND A. KAUFMAN ( 199 2). "Discrete Ray Tracing", IEEE Computer Graphics and Applications,...
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computer graphics c version 2ed - donald hearn , pauline baker
... and science had to rely on expensive and cumbersome equipment, advances in computer technology have made interactive computer graphics a practical tool. Today, we find computer graphics used ... focusing, deflection of the electron beam can be controlled either with electric fields or with magnetic fields. Cathode-ray tubes are now commonl!. constructed with magnetic deflection coils ... propcts. 1-3 COMPUTER ART Computer graphics methods are widely used in both fine art and commercial art applications. Artists use a variety of computer methods, including special-pur-...
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Creative Suite 5 Motion Graphics with Adobe phần 9 potx
... selected) produces more visual variety if you have a large textured area to clone.To set the source point for cloning, simply Option-click (Alt-click) within the current document. You can ... for checking alignment.Using 3D CamerasAnimating the 3D cameras is pretty straightforward. In fact, compared to other motion graphics projects motion control 3D is much less abstract. You ... object to place a green screen sub-ject within the virtual set. You can animate the background or simply keyframe the camera to create useful camera angles and moves. Using the camera controls,...
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