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, c...

Ngày tải lên: 12/08/2014, 11:20

... 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 ... in Chapter 14. 13- 1 1 CURVED SURFACES Effective methods for determining visibilit$ for objects with curved surfaces in- clude ray-casting and octree methods. With ray casting, we calcu...

Ngày tải lên: 12/08/2014, 11:20

... 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 ... 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 on the map surface, and rain conce...

Ngày tải lên: 12/08/2014, 11:20

... 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 tra...

Ngày tải lên: 12/08/2014, 11:20

... following procedure. Winclude <math.h> Yinclude &apos ;graphics. hm typedef float Matrix3x3 131 131 : Matrix3x3 thenatrix: void matrix3~3SetIdentity (Matrix3x3 rn) ( int ;, j; Composite ... 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...

Ngày tải lên: 12/08/2014, 11:20

... 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: ... orthographic projection is callcd a \hri :Gi 13. Engineering and architectr~ral drawings commonly employ these orthographic projritions, because lengths and angles are accurately de-...

Ngày tải lên: 12/08/2014, 11:20

... 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...

Ngày tải lên: 12/08/2014, 11:20

... Beaer conversicm. 35 0 blending fvnctioru, 33 5 CoxdeBmr mcunion formulas 33 5 cuhic. 3. 79-41 curves. 3- 44 knot vector, 33 5 loral control, 33 5 ,33 6 matnx. 34 1 nonunlform. 33 6 .34 3-44 nonu~fom ... 33 0 N~IC Curve, 33 1 -33 mwa, 32 7 -33 dmgn lechnique, 33 0 -31 matrix, ,33 3 pmpemes, 32 9 -30 surfaces, 33 3 -34 Bias parameter (splime). 32 5, ,34 6...

Ngày tải lên: 12/08/2014, 11:20

... 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 ... 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, incl...

Ngày tải lên: 04/06/2014, 12:01

... objects private void menuItem2_Click(object sender, System.EventArgs e) { // Create a Graphics object and set it clear Graphics g = this.CreateGraphics(); g.Clear(this.BackColor); // Create ... break; } case 2: { // Draw an ellipse curGraphics.DrawEllipse(curPen, curX, curY, diffX, diffY); break; } case 3: { // Draw a rectangle curGraphics.DrawRectangle(curPen, curX, c...

Ngày tải lên: 12/08/2014, 19:20