CIRCLE

Syntax

int_val = CIRCLE( x, y, r );

Input arguments

float	x, y	The coordinates for the circle position.
float	r	The radius of the circle.

Return Values

Success:

int

0

Circle drawn successfully.

Description

This function draws a circle. Appearance is affected by the following attributes:

color
pen

CIRCLE and ARC can also be used to hatch faces, not only polylines, provided that the lines touch each other to complete the face.

Example

Copy

hatch_test( )
{
         START_FACE();         
         
         POLY( -20, 0, 
               -50, 0,
               -50, 50,
                   50, 50,                                    
                50, 0,                                    
                20, 0);
                
         ARC( 20, 0, 
               0, 0, 180);
               
         START_HOLE();
         CIRCLE( 0, 40, 5);                                  
         
         style= 0;         /* not used currently */       
         o_x = 0.0;     /* not used currently */       
         o_y = 0.0;     /* not used currently */
         ang = 45.0;
         spc = 2.0;
         HATCH_FACE( style, o_x, o_y, ang, spc ); 
}