Thursday, August 16, 2012

COMPUTER GRAPHICS PROGRAMS Built-in Functions

     NAME   FUNCTION              SYNTAX
1.arc arc draws a circular arc. void far arc(int x,int y,int stangle,int endangle,int radius);
2.circle circle draws a circle. void far circle(int x,int y,int radius);
3.bar draws a bar. void far bar(int left,int top,int right,int bottom);
4.closegraph shutdown the graphic system. void far closegraph(void);
5.ellipse ellipse draws an elliptical arc. void far ellipse(int x,int y,int stangle,int endangle,int xradius,int yradius);
6.floodfill floodfills a bound region. void far floodfill(int x,int y,int radius);
7.getbkcolor getbkcolor returns the current back ground color.  int far getbkcolor(void);
8.getgraphmode getgraphmode returns the current graphic mode. int far getgraphmode(void);
9.getmaxcolor  returns the maximum color value. int far getmaxcolor(void);
10.getmaxx  returns maximum x screen coordinate. int  far gatmaxx(void);
11.getmaxy returns maximum yscreen coordinate. int far getmaxy(void);
12.gety returns the current positions y coordinate.  int far gety(viod);
13.getx returns the current positions xcoordinate. int far getx(void);
14.detectgraph determaines graphic driver and mode to use by checking the hardware. void far detectgraph(int far *graphdriver,int far *graphmode);
15.fillellipse fillellipse draws and fill an ellipse. void far fillellipse(int x,int y,int xradius,int yradius);
16.getarccoords  gets coordinate of the last call to arc. void far getarccoords(struct arccoords type far *arccoords);
17.getcolor returns the current drawing color. int far getcolor(void);
18.getfillpattern  copies a userefined fill pattern into memory. void far getfillpattern(char far *pattern);
19.getmaxmode returns maximum graphics mode number for current driver. int far getmaxmode(void);
20.drawpoly draws the outline of a polygon. void far drawpoly(int numpoints,int far *polypoints);
21.fillpoly fillpoly draws and fills a polygon. void far fillpoly(int numpoints,int *polypoints);
22.clearviewpoint clear the current view port. void far clearviewport(void);
 23.getpixel getpixel gets the color of a specified pixel. unsigned far getpixel(int x,int y);
24.grapherrormsg returns a pointer to an error message string. char *far grapherrormsg(int errorcode);
25.lineto draws a line from th current position cp to (x,y). void far lineto(int x,int y);
26.line  draws a line between two specified points. void far line(int x1,int y1,int x2,int y2);
27.initgraph  initialize the graphic system. void far initgraph(int far *graphdrive,int far *graphmode,int far *pathtodrive);
28.rectangle draws a rectangle. void far rectangle(int left,int top,int right,int bottom);
29.putpixel plots a pixel at a specified point. void far putpixel(int x,int y,int color);
30.imagesize returns the number of bytes required to store a bit image. Unsigned far imagesize(int left,int top,int right,int bottom);
31.moveto Moves the cp to (x,y). void far moveto(int x,int y);
32.setcolor sets the current drawing color. void far setcolor(int color);
33.setgraphmode sets the system to graphics mode,clear the screen. void far setgraphmode(int mode);
34.textwidth returns the width of string in pixels. int far textwidth(char far *textstring);
35.textheight returns the height of string in pixels. int far textheight(char far *textstring);

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