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c:graphics.h:sector

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c:graphics.h:sector [2015/05/06 23:06] (current)
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 +===== sector =====
 +
 +
 +====Syntax of sector ==== 
 + <code c>
 +#include <graphics.h>
 +void sector(int x, int y, int stangle, int endangle, int xradius, int
 +yradius);
 +  </code>
 +
 +
 +==== Description of sector ==== 
 +<code c>
 +Draws and fills an elliptical pie slice using (x,y) as the center point,
 +xradius and yradius as the horizontal and vertical radii, respectively,
 +and drawing from stangle to endangle. The pie slice is outlined using the
 +current color, and filled using the pattern and color defined by
 +setfillstyle or setfillpattern.
 +The angles for sector are given in degrees. They are measured counter-
 +clockwise with 0 degrees at 3 o'clock, 90 degrees at 12 o'clock, and so
 +on.
 +If an error occurs while the pie slice is filling, graphresult returns a
 +value of -6 (grNoScanMem).
 +</code>
 +
 +
 +==== Example of sector ====
 +<code c>
 +/* sector example */
 +
 +#include <graphics.h<
 +#include <stdlib.h<
 +#include <stdio.h<
 +#include <conio.h<
 +
 +int main(void)
 +{
 +   /* request autodetection */
 +   int gdriver = DETECT, gmode, errorcode;
 +   int midx, midy, i;
 +   int stangle = 45, endangle = 135;
 +   int xrad = 100, yrad = 50;
 +
 +   /* initialize graphics and local variables */
 +   initgraph(&gdriver, &gmode, "");
 +
 +   /* read result of initialization */
 +   errorcode = graphresult();
 +   if (errorcode != grOk) {  /* an error occurred */
 +
 +printf("Graphics error: %s\n", grapherrormsg(errorcode));
 +printf("Press any key to halt:");
 +getch();
 +exit(1);   /* terminate with an error code */
 +   }
 +
 +   midx = getmaxx() / 2;
 +   midy = getmaxy() / 2;
 +
 +   /* loop through the fill patterns */
 +   for (i=EMPTY_FILL; i<USER_FILL; i++) {
 +
 +/* set the fill style */
 +setfillstyle(i, getmaxcolor());
 +
 +/* draw the sector slice */
 +sector(midx, midy, stangle, endangle, xrad, yrad);
 +
 +getch();
 +   }
 +
 +   /* clean up */
 +   closegraph();
 +   return 0;
 +}
 +</code>
 +
 +
 +==== See also ====
 +[[arc]]
 +[[circle]]
 +[[ellipse]]
 +[[getarccoords]]
 +[[getaspectratio]]
 +[[graphresult]]
 +[[pieslice]]
 +[[setfillpattern]]
 +[[setfillstyle]]
 +[[setgraphbufsize]]
 +
 +
 +===== output of sector example ===== 
 +
 +    no output of example at the moment
 +    do not hesitate and add it...  
 +
 +
  
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c/graphics.h/sector.txt · Last modified: 2015/05/06 23:06 (external edit)

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