applications of computer graphics

calculated:How to promote to Integer algorithm?The answer is to let e=d-0.5e0=-0.5Once per cycle: E = e+kif (e>0) then E = e-1E+k This is still a floating-point additionBecause k= y/xBecause of the notation of the error term, you can replace E with e*2* x:e0=-xOnce per cycle: E = e+2 yif (e>0) Then E = e-2 xThis has become an integer additionAlgorithm steps:The algorithm steps are:1. Enter the ends of the line with P 0 (x 0,y 0) and P 1 (x 1,y 1).2. Calculate the initial values x, Y, e=-X, x=x

Computer Graphics OpenGL --keyboard control three-dimensional car Final Implementation effect: Source: #include "stdafx.h" #include

line, x = y, so the horizontal deflection and the vertical deflection voltage are equal . in each case, the specified end can be a smooth line with a slope of M is generated between the points . in a raster system, the horizontal and vertical steps are limited by the spacing of pixels by drawing lines in pixels . that is, the line must be sampled at discrete locations, and the pixels closest to the line are determined at each sampling location. Figure 3.7 shows the scanning conversion process

Algorithm Description:The algorithm of the midpoint generation of a circleIf we construct the functionF(x,y)= x2+ y2- R2, the points on the circle haveF(x,y) = 0, for points outside the circleF(x,y) >0, for points within the circleF(x,y) As with the midpoint drawing line method, the construction discriminant:D=F(M)=F( xp+1,yp -0.5) = (XP+ 1)2+(YP-0.5)2- R2if D P1 is the next pixel, and then the discriminant of the next pixel is:D=F(XP+2,YP-0.5) = (XP+2)2+(YP-0.5)2- R2=d +2XP+3if D ≥ 0, you sho

::linetoPrototype:BOOL LineTo (int x,int y);BOOL LineTo (point point);Example:void Ctestview::ondraw (CDC * PDC){CTESTCOC * PDoc = GetDocument ();CRect rect;GetClientRect (rect);Pdc->setmapmode (Mm_anisotropic); Set mapping mode to Mm_anisotropicPdc->setwindowext (rect. Width (), Rect.　　Height ()); Setup windowPdc->setviewportext (rect. Width (),-rect.　　Height ()); Set viewport: X-axis horizontal to right, y-axis vertically downwardPdc->setviewportorg (Rect.width ()/2,rect.　　Heigth ()/2); Custom

The selection of a brush or paint brushin some graphics packages, especially the painting system, you can select different brushes and brush types directly. Options for this type include shapes, dimensions, and patterns for brushes or brushes. Figure 4.7 shows some possible brushes and brush shapes. These shapes can be stored in a pixel template as numeric values in pixel locations, and then set to the line path. For example, a rectangle brush can be

, the interior is filled with liquid crystal material. The horizontal transparent conductor line is discharged on a board and a vertical transparent conductor row is placed on the other board. Defines a pixel position at the intersection of the row and column conductors. Normally, the molecules are arranged in the "open state" as shown in Figure 2.15. The biased light passing through the material is distorted so that it passes through the opposite polarizer, thus reflecting the light to the obse

Computer Graphics (2nd edition in Wanbo Shuo) 45th page of the Bresenham algorithm has errors:The book is supposed to be written in X as the step-by-step method, but he wrote a part of the Y is the step-by-step method (in fact, also write the wrong), and finally the X-step of the way to summarize.The algorithm in the analysis book has to be:L k Initial value L 0L k Initial value >=1 draw is y=x;The followin

1. Multimediaa lot of media: text (TextView, simply don't speak ), pictures, sounds, videos and so on. 2. PictureHow does a computer represent a picture? (1) BMP high-quality preservation256-color bitmap: Each pixel in the picture can have 256 colors to choose from, and 1 pixels to use 1 byte notation. (BYTE:00~FF)24-color bitmap: Each pixel in the picture can have -Choice of Colors 16-color bitmap: Each pixel in the picture can have -Choice of Color

Show water with three-dimensional sense. This method does not produce a true three-dimensional image, but rather gives the viewer a different view of each eye to provide a three-dimensional effect, never making the scene with depth. To get a three-dimensional projection, you first need to get two views of the scene from the observation direction relative to each eye (left eye and right eye). You can obtain both views by specifying a different observation location and by a

The school season is coming, and more and more gay guys are doing it themselves, Feng also enough to eat, their choice of products in the x Po, y East, or the entity to buy their own assembly purchase, but to deal with the problem is also coming, many small white bought accessories will always worry about their purchase is not a new authentic accessories, online shopping This thing itself will be in believe, Trust on the basis of what you have previously not targeted to understand well. Do a goo

]=1;Putpixel (X0-y,y0-x,color);A[x0-y][y0-x]=1;if (dd+=x*2.0+3;else{d+=2.0* (x-y) +5;y--;}x + +;}}void Edge_mark_fill (int color) {int Driver=vga,mode=vgahi;Initgraph (driver,mode, "");SetBkColor (0);int x;int y;Midpointcircle (100,100,100,255);Midpointcircle (301,100,100,255);//Circle stagger a bitDraw graphicsFor (x=0,y=100;x{Putpixel (X,y,color);A[x][y]=1;}200 Stagger a bitFor (x=201,y=300;x{Putpixel (X,y,color);A[x][y]=1;}BOOL Inside=false;for (y=0;y{Inside=false;for (x=0;x{if (side[y]==1)Br

quadrant is calculated asThe following procedure gives an example of using the midpoint algorithm to display an ellipse. Elliptic Parameters Rx, Ry, Xcenter, and ycenter value of the process Ellipsemidpoint. The position on the first quadrant curve is computed and passed to the procedure ellipseplotpoints. The ellipse position in the other three quadrants is obtained using symmetry, and the ellipse color in the frame cache corresponding to these locations is set by the SetPixel program.inline i

two pieces. The other side of the product is not negative, so the resulting two polygons are convex polygons.We can also use the rotational method to split concave polygons. moves the vertex VK to the coordinate system origin in a counterclockwise direction along the edges of the polygon. Then rotate the polygon clockwise so that the next vertex vk+1 on the x-axis. If the next vertex vk+2 is below the x-axis, the polygon is concave. We then use the x-axis to split the polygon into two new polyg

is f (x,y) = 0 for points on the Circle, and F (x,y) >0 for dots outside of the circle, for Point F (x,y) D=f (M) =f (xp+1,yp-0.5) = (xp+1) hydrate (yp-0.5) 2-R2If the dD=f (xp+2,yp-0.5) = (xp+2) (yp-0.5) 2-r2=d+2xp+3If the d≥0, then should take P2 for the next pixel, and the next pixel discriminant isD=f (xp+2,yp-1.5) = (xp+2) hydrate (yp-1.5) 2-r2=d+2 (XP-YP) +5The first pixel we're talking about here is (0,r), and the initial value of discriminant D is:D0=f (1,r-0.5) =1.25-r "Algorithm Flowc

For many Apple fans, the gorgeous interface of Apple's operating system, excellent running speed and system security is perfect. But in daily life, the Apple operating system for many software compatibility is not particularly good, thus affecting our office efficiency. Today's small series for you to introduce Apple Air installed Windows7 operating system, so that the perfect solution to the problems you encounter. Preparatory work: 1. External DVD drive 2.U disk or removable

According to market research found that in the past two years many DIY enthusiasts and some graphics companies over the pursuit of graphics card 3D performance. In their eyes, the graphics card 3D performance determines the quality of the graphics card, but is it true? In fact, I think, look at a

1, through the blue screen information to find the source of the fault If your computer often encounters a problem with a blue screen, it is recommended to search the screen when the information provided, blue screen often shows the crash of the driver or it encountered the wrong type of information, it can be very intuitive to tell us the problem, now in Windows met most of the blue screen problems are likely to be caused by a hardware failure ( Mem

How to clean the computer graphics card dust? Video memory is the short name for the display RAM. Its main function is to temporarily store the display chip to process the data and processed data. The higher the performance of the graphics core, the more memory you need. The previous video memory is mainly SDR, the capacity is not large. Most of the cards on the

For such tips, most children's shoes will feel confused, do not know whether the computer is a problem or no problem. Today, we teach you how to solve this problem by driving your life. The computer's video card driver is not compatible or simply overheated because of the above hint. So how to determine whether the computer graphics driver is not com