Dda Circle Drawing Program in C
Explain and write steps for DDA line drawing algorithm.
Last Reply : This algorithm generates a line from differential equations of line and hence the name DDA. DDA algorithm is an incremental scan conversion method. A DDA is hardware or software used for linear interpolation of variables over ... : Steps ane: Read the end points of line (x1,y1) and (x2,y2).
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Write DDA Arc generation algorithm.
Last Answer : ane. Read the heart of curvature, say(x0,y0) two. Read the arc angle, say Ɵ 3. Read the starting point of the arc, say(x,y) four. Calculate dƟ dƟ=min(0.01,1/3.two*(|10-x0|+|y-y0|))) v. Initialize angle = 0 half-dozen. ... Plot(x,y) x=x-(y-y0) *dƟ y=y-(x-x0) *dƟ Angle =Angle + dƟ } 7. stop
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Consider the line from (0,0) to (4,6). Use the unproblematic DDA algorithm to rasterize this line.
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Listing any ii line drawing algorithms. As well, listing two merits of any line drawing algorithm.
Last Answer : Line drawing algorithms: Digital Differential Analyzer (DDA) algorithm Bresenham's algorithm Merits of DDA algorithms: Information technology is the simplest algorithm and information technology does not crave special skills ... , and multiplication by ii, which tin can be accomplished by a simple arithmetics shift operation.
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Rephrase the Bresenham's algorithm to plot 1/8th of the circle and write the algorithm required to plot the same.
Final Answer : The primal characteristic of circle that it is highly symmetric. Then, for whole 360 caste of circle we will divide it in 8-parts each octant of 45 degree. In order to that we volition utilize Bresenham'south Circle Algorithm for adding of the ... Call Putpixel (Y + h, -X - grand). Call Putpixel (-Y + h,-X + k).
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Write down Cyrus-Beck line clipping algorithm.
Final Respond : Stride 1: Read finish points of line P1 and P2. Stride 2: Read vertex coordinates of clipping window. Step 3: Summate D = P2 - P1. Step iv: Assign purlieus betoken b with particular border. Step five: Detect ... parametric equation of line P1P2. Stride 12: Draw line segment P(tL) to P(tU). Step 13: Stop.
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Write down Cohen-Sutherland Line clipping algorithm.
Final Respond : Step 1: Scan end points for the line P1(x1, y1) and P2(x2, y2) Step 2: Browse corners for the window as (Wx1, Wy1) and (Wx2, Wy2) Step 3: Assign the region codes for endpoints P1 and P2 by ... if whatsoever of the end bespeak of it appear outside the window. Step 8: Describe the remaining line. Step ix: Exit
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Write the midpoint subdivision algorithm for line clipping.
Last Answer : Step 1: Browse two stop points for the line P1(x1, y1) and P2(x2, y2). Step two: Scan corners for the window as (x1, y1) and (x2, y2). Step 3:Assign the region codes for ... 5 for both subdivided line segments until yous get completely visible and completely invisible line segments. Step 6: Get out.
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Describe Sutherland-Hodgeman algorithm for polygon clipping.
Terminal Respond : In Sutherland-Hodgeman, a polygon is clipped past processing the polygon boundary every bit a whole confronting each window edge. Clipping window must be convex. This could be achieved by processing all polygon ... is successively passed to process next edge of clipping window. Step 7: Stop.
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Explain Cyrusblek line clipping algorithm.
Last Answer : Cyrus Beck Line Clipping algorithm: Cyrus Beck Line Clipping algorithm is used to clip 2D/3D lines confronting convex polygon/polyhedron. Cyrus Beck Line clipping algorithm is really, a parametric line-clipping algorithm. ... Step 12 : Draw line segment P(tL) to P(tU). Step thirteen : Stop.
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Explicate midpoint subdivision line clipping algorithm.
Last Answer : Step 1: Scan 2 end points for the line P1(x1, y1) and P2(x2, y2). Step 2: Scan corners for the window equally (Wx1, Wy1) and (Wx2, Wy2). Step 3: Assign the region ... through 5 for both subdivided line segments until you become completely visible and completely invisible line segments. Pace 6: Exit.
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Explicate scan line algorithm of polygon clipping.
Last Answer : For each scan line crossing a polygon, the area-fill algorithm locates the intersection points of the scan line with the polygon edges. These intersection points are and then sorted from left to right ... 4 : Fill all those pair of coordinates that are inside polygons and ignore the alternate pairs.
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List / name two line cartoon algorithms.
Final Answer : Digital Differential Analyzer (DDA) Algorithm Digital Differential Analyzer algorithm generates a line from differential equations of line and hence the name DDA. Bresenham'southward Algorithm The Bresenham algorithm is another line drawing algorithm which uses integer calculations for drawing line.
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Write a plan in 'C' to generate Hilbert'southward curve.
Last Answer : #include #include #include #include void move(int j,int h,int &10,int &y) { if(j==1) y-=h; else if(j==2) ten+=h; else if(j==3) y+=h; else if(j==4) 10-=h; lineto(x,y); } ... initgraph(&gd,&gm,Zippo); moveto(x,y); hilbert(r,d,50,u,n,h,x,y); delay(10000); closegraph(); return 0; }
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Write C programme for Hilbert's Curve.
Last Respond : #include <stdio.h> #define N 32 #define K 3 #define MAX N * M typedefstruct{int ten; int y; } betoken; void rot(int due north, point *p, int rx, int ry){ int t; if(!ry){ if(rx == 1){ ... y < MAX; ++y)printf("%c", pts[y][10]); printf("\n"); } return0; }
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Write the transformation matrix for y-shear.
Last Answer : The Y-Shear can be represented in matrix from every bit:
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Write process to fill polygon with flood fill.
Last Answer : flood_fill(ten,y,old_color,new_color) { if(getpixel(ten,y) = old_color) { putpixel(10,y,new_color); flood_fill(x+i,y,old_color, new_color); flood_fill(x-1,y,old_color, new_color); flood_fill(x,y+1, ... flood_fill(x+1,y-ane,old_color, new_color); flood_fill(10-1,y+one,old_color, new_color); } }
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Write second and 3D scaling matrix.
Last Answer : 2D Scaling Scaling means to modify the size of object. This alter can either be positive or negative. To change the size of an object, scaling transformation is used. In the scaling process, y'all ... . Therefore, bespeak subsequently scaling with respect to origin tin can exist calculated every bit, P=P . South
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Write curt note on Augmented Reality.
Concluding Reply : Augmented reality (AR) is made up of the word augment which means to make something great by adding something to information technology. Augmented Reality is a type of virtual reality that ... Reality is used in entertainment, military training, engineering design, robotics, manufacturing and other industries.
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Consider a line AB with A = (0,0) and B = (eight, 4). Apply a uncomplicated DDA algorithm and compute the outset four plots on this line. (ane) [(0, 0), (1, ane), (2, one), (three, 2)] (two) [(0, 0), (ane, ane.5), (2, ii), (3, iii)] (3) [(0, 0), (1, 1), (2, two.5), (iii, 3)] (iv) [(0, 0), (one, 2), (ii, ii), (three, 2)]
Consider a line AB with A = (0,0) and B = (eight, 4). Utilize a elementary DDA algorithm and compute the first four plots on this line. (i) [(0, 0), (ane, 1), (2, i), (3, two)] (2) [(0, 0), (one, 1.5), (two, two), (3, 3)] (3) [(0, 0), (1, ane), (ii, 2.5), (3, 3)] (4) [(0, 0), (i, 2), (2, 2), (3, 2)]
Last Answer : [(0, 0), (ane, one), (2, 1), (iii, 2)]
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Compare Bitmap Graphics and Vector based graphics.
Final Answer : Compare Bitmap Graphics and Vector based graphics.
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Explain types of Parallel Projection with example.
Last Respond : Orthographic projection - the projection direction is a normal one to the plane and information technology is categorized equally o Top projection o Front projection o Side project Oblique project - the ... gives a meliorate view and it is categorized as o Condescending project o Cabinet projection
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Explicate stroke method and Bitmap method with example.
Last Answer : 1)STROKE METHOD Stroke method is based on natural method of text written by man. In this method graph is drawing in the course of line by line. Line drawing algorithm DDA follows ... resolution devices such as inkjet printer or laser printer may utilize graphic symbol arrays that are over 100x100.
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Explain differ types of Text clipping in brief.
Final Respond : Many techniques are used to provide text clipping in a computer graphics. It depends on the methods used to generate characters and the requirements of a particular application. There are three methods ... and then we discard only that portion of character that is exterior of the clipping window.
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List out basic transformation techniques. Explain scaling transformation with respect to 2D.
Last Answer : Bones transformations techniques are: Translation Scaling Rotation Scaling Transformation Scaling means to modify the size of object. This change can either be positive or negative. To change ... . If we provide values greater than 1, then we tin increment the size of the object.
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Differentiate between Random Scan and Raster Browse.
Last Answer : Random Scan Display Raster Scan Display In vector scan display the beam is moved between the stop points of the graphics primitives. In raster scan display the axle is moved all over the screen ... e.grand. monitors, Goggle box It uses axle-penetration method. It uses shadow-mask method
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Give matrix representation for 2D scaling
Last Answer : Allow us assume that the original co-ordinates are (X, Y), the scaling factors are (SX, SY), and the produced co-ordinates are (10', Y'). This can be mathematically represented as shown below: ... 10 and Y direction respectively. The higher up equations can also be represented in matrix class as below:
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List diverse polygon filling algorithms
Concluding Reply : Diverse polygon filling algorithms are: Flood Fill Algorithm Boundary Fill Algorithm Scan Line Algorithm
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List types of Polygon
Last Respond : Polygon can be of two types:- Convex polygon Concave polygon
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Explain Raster Scan
Last Answer : In Raster scan, the electron beam from electron gun is swept horizontally across the phosphor one row at fourth dimension from top to bottom. The electron beam sweeps dorsum and forth from left to right across ... by repeating scanning of the same image. This procedure is known as refreshing of screen.
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Give the characteristics of display adaptor.
Last Answer : The characteristics of mutual display adapters are given in Table. The present-day brandish adapter supports all the modes of the preceding brandish adapters
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Define: (i)Pixel (2)Frame Buffer
Last Respond : Pixel Pixel or Pel is defined as "the smallest addressable screen element". OR A pixel may be divers as the smallest size object or color spot that tin exist displayed and addressed on a ... buffer, or sometimes framestore) is a portion of RAM containing a bitmap that drives a video display.
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What is interpolation? Describe the Lagrangian Interpolation method.
Concluding Respond : Specify a spline curve past giving a set up of coordinate positions, called control points, which indicates the general shape of the curve These, command points are so fitted with piecewise continuous parametric ... -point positions to a higher place the surface Lagrangian Interpolation Method :
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Describe the vector scan display techniques with neat diagram.
Last Reply : A pen plotter operates in a similar way and is an case of a randomscan, hard-copy device. When operated as a random-scan brandish unit, a CRT has the electron axle directed but to the parts ... drawn one line at a fourth dimension by positioning the beam to make full in the line betwixt specified end points.
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Obtain a transformation matrix for rotating an object about a specified pin point.
Terminal Answer : To practice rotation of an object well-nigh any selected arbitrary bespeak P1(x1 ,y1), post-obit sequence of operations shall be performed. one. Translate: Translate an object so that arbitrary point P1 is moved to ... to P1and hence information technology is translation factor. It is demonstrated in following effigy:
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State the different character generation methods. Describe any i with diagram.
Final Reply : Character Generator Methods: 1) Stroke Method 2) Bitmap Method 3) Starburst Method 1) STROKE METHOD Stroke method is based on natural method of text written past human existence. In this method ... Character A : 0011 0000 0011 1100 1110 0001 Graphic symbol K:0000 0011 0000 1100 1111 0011
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Translate the polygon with co-ordinates A (three, half dozen), B (8, xi), & C (xi, 3) by 2 units in X management and three units in Y direction.
Last Answer : Ten'=x+tx Y'=y+ty tx=2 ty=3 for indicate A(iii,6) x'=iii+two=v y'=half dozen+iii=nine for bespeak B(8,11) x'=8+2=10 y'=xi+iii=14 for point C(11,3) x'=11+two=thirteen y'=iii+3=6 A'=(x',y')=(5,9) B'=(x',y')=(10,14) C'=(x',y')=(13,vi)
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Compare vector scan display and raster scan display
Last Respond : Compare vector scan display and raster scan display
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What is homogeneous co-ordinate? Why is it required?
Last Respond : Homogeneous coordinates are another style to represent points to simplify the style in which we express affine transformations. Ordinarily, book-keeping would go dull when affine transformations of ... 3D graphics hardware tin exist specialized to perform matrix multiplications on 4x4 matrices.
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Define convex and concave polygons.
Last Reply : Convex Polygon: It is a polygon in which if y'all take whatsoever two positions of polygon so all the points on the line segment joining these two points fall inside the polygon itself. Concave ... points on the line segment joining these two points does not fall entirely within the polygon.
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Define virtual reality. List any two advantages of virtual reality.
Last Answer : Virtual reality (VR) ways experiencing things through our computers that don't really exist. OR Virtual Reality (VR) is the use of figurer technology to create a simulated environment. ... in video games, engineering, entertainment, education, design, films, media, medicine and many more than.
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List any 4 applications of estimator graphics.
Concluding Respond : DTP (Desktop Publishing) Graphical User Interface (GUI) Figurer-Aided Design Computer-Aided Learning (Cal) Animations Computer Fine art Entertainment ... Prototype processing Medical Applications Presentation and Business concern Graphics Simulation and Virtual Reality
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Define aspect ratio. Give one example of an attribute ratio
Last Respond : Aspect ratio: It is the ratio of the number of vertical points to the number of horizontal points necessary to produce equal length lines in both directions on the screen. or In calculator ... Resolution 1280x1024 has an aspect ratio v:four Resolution 2160x1440, 2560x1700 has an aspect ratio 3:2
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Explain character generation methods: i. Stroke 2. Starburst 3. Bitmap
Last Answer : ane) STROKE METHOD Stroke method is based on natural method of text written past human being. In this method graph is cartoon in the class of line by line. Line drawing algorithm DDA follows this ... Character A : 0011 0000 0011 1100 11100001 Character M:0000 0011 0000 1100 11110011
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Explain composite transformation over arbitrary point.
Last Answer : To do rotation of an object about any selected arbitrary indicate P1(x1 ,y1), following sequence of operations shall be performed. 1. Interpret: Translate an object so that capricious point P1 is moved ... to P1and hence it is translation factor. Information technology is demonstrated in following figure:
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Explain within and outside test for polygon.
Concluding Answer : This method is too known as counting number method. While filling an object, we often need to identify whether particular point is within the object or outside information technology. There are 2 methods by which we can place ... + 1 = 1; which is not-zero. So the signal is said to be an interior point.
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Explain Text Clipping.
Last Answer : Many techniques are used to provide text clipping in a figurer graphics. It depends on the methods used to generate characters and the requirements of a particular awarding. There are three methods ... and so we discard simply that portion of character that is outside of the clipping window.
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Explain Koch curve with diagram.
Last Answer : Koch Curve: - In Koch curve, begin at a line segment. Divide it into third and replace the center by the two adjacent sides of an equilateral triangle as shown below. This will give the curve which starts and ... four/iii, the length of the curve will exist infinite but it is folded in lots of tiny
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Explain 2D transformations with its types.
Last Answer : A transformation is a function that maps every position (x, y) into a new position (10', y'). Instead of applying the transformation function to every betoken in every line that makes up the object, nosotros ... the object. If nosotros provide values greater than 1, then we can increase the size of the object.
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Explicate with diagram the techniques of Raster Scan Display.
Concluding Answer : The nearly common blazon of graphics monitor employing a CRT is the Raster-scan displays, based on television set engineering science JPG images are raster based. Light occurs when an electron axle stimulates a phosphor. ... on the screen. If the intensity is zero (0) then no dot is displayed. monitor.
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