Basics of Computer graphics lab

Basics of Computer graphics lab

• 1.
  Computer Graphics Lab ByPriya Goyal
• 2.
  How to runthe graphics program in Turbo C++ • Open turbo C++ • Click on Option => Linker => Library • Click on Graphics(mark it as ‘X’) • Click on OK Now you can run your graphics programs.
• 3.
  Basic functions todraw shapes in graphics Shape Function syntax pixel Draw a pixel Putpixel (X1,Y1,Color) Line Draw a line Line(X1,Y1,X2,Y2) Rectangle Draw a rectangle Rectangle(Left,Top,Right,Bottom) Circle Draw a circle Circle(X,Y,Radius) Ellipse Draw a ellipse Ellipse(X1,Y1,0,360,XaxisRadius,YaxisRadius) Arc Draw a arc Arc(X1,Y1,StartingAngle,EndingAngle,Radius) Bar Draw a filled rectangle Bar(Left,Top,Right,Bottom) Bar3d Draw a filled 3d rectangle Bar3d(Left,Top,Right,Bottom,depth,topflag) **topflag will be 0 or 1** Here X1=distance of first point of shape from X axis, X2=Distance of last point of shape from X axis Here Y1=distance of first point of shape from Y axis, Y2=Distance of last point of shape from Y axis
• 4.
  Structure of graphicsprogram #include<graphics.h> #include<stdio.h> #include<conio.h> void main( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); …………………… ……………………. getch( ); closegraph( ); } Location of BGI folder, where display files are saved. Write the location of (C:-TC-BGI) Initialization of graph
• 5.
  Draw a Pixel #include<graphics.h> #include<stdio.h> #include<conio.h> voidmain( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); Putpixel(100,100,RED) getch( ); closegraph( ); } Putpixel(X1,Y1,Color)
• 6.
  Draw a line #include<graphics.h> #include<stdio.h> #include<conio.h> voidmain( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); Line(100,100,200,200) getch( ); closegraph( ); } Line(X1,Y1,X2,Y2)
• 7.
  Draw a Rectangle #include<graphics.h> #include<stdio.h> #include<conio.h> voidmain( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); Rectangle(100,100,200,200) getch( ); closegraph( ); } rectangle(X1,Y1,X2,Y2)
• 8.
  Draw a circle #include<graphics.h> #include<stdio.h> #include<conio.h> voidmain( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); Circle(100,100,10) getch( ); closegraph( ); } circle(X1,Y1,radius)
• 9.
  Draw an ellipse #include<graphics.h> #include<stdio.h> #include<conio.h> voidmain( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); ellipse(100,100,0,360,20,10); getch( ); closegraph( ); } ellipse(x1,y1,0,360,xAxisRadius,yAxisRadius)
• 10.
  Draw an Arc #include<graphics.h> #include<stdio.h> #include<conio.h> voidmain( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); arc(100,100,90,280,10); getch( ); closegraph( ); } arc(x1,y1,StartingAngle,EndingAngle,Radius)
• 11.
  Draw a Bar #include<graphics.h> #include<stdio.h> #include<conio.h> voidmain( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); bar(100,100,200,200); getch( ); closegraph( ); } Bar(Left,Top,Right,Bottom)
• 12.
  Draw a 3Dbar #include<graphics.h> #include<stdio.h> #include<conio.h> void main( ) { int gd = DETECT, gm; initgraph(&gd, &gm, "C:TCBGI"); bar3d(100,100,200,200,10,1); getch( ); closegraph( ); } Bar3d(left,top,right,bottom,depth,topflag)
• 13.
  Assignment Q.1 Draw aflag using line and circle. Q.2 Draw a hut using line, rectangle and circle. Q.3 Draw a smiley face using ellipse, circle and arc. Q.4 Draw a fish using arc, circle and line.