GD_ARC

NAME

gd_arc - Draw an arc.

SYNOPSIS

gd_arc(gd:variable, start_angle:integer, end_angle:integer, cx:integer, cy:integer, width:integer, height:integer, gdArc:true, gdChord: true, gdNoFill:true, gdEdged: true, filled:true|false, color:"string", thickness:integer, coloridx:integer);

PARAMETERS

gd

Variable must hold a return value from gd_new

cx,cy

Center point of arc.

width, height

Width and height of arc.

color

A color in the format #000000 or #255,255,255

coloridx

A color index get from gd_get_color.

start_angle

Start angle in degree.

end_angle

End angle in degree.

thickness

Thickness of line in pixel. Default is 4.

closed

Close the polygon if not closed. Default is true.

filled

Fill the polygon. Default is false.

gdArc

gdChord just connects the starting and ending angles with a straight line, while gdArc produces a rounded edge.

gdChord

gdChord just connects the starting and ending angles with a straight line, while gdArc produces a rounded edge.

gdNoFill

gdNoFill indicates that the arc or chord should be outlined, not filled

gdEdged

gdEdged, used together with gdNoFill, indicates that the beginning and ending angles should be connected to the center; this is a good way to outline (rather than fill) a pie slice.

MODULES

To use this module, you must specify the following in /usr/local/website/site.conf:

Module gd {
        Library : "/usr/local/lib/libsngd.so"
        Init : "sngd_init"
}

EXAMPLES

Note: In the followings examples, the _ between the { should be removed to make it work.

res=<{
        %include "/includes/gd.sn";
        remove("/html/images/print.jpg");
        im=gd_new(width:1000,height:1000,bgcolor:Gray,truecolor:true);
        red = gd_get_color(gd:im, color:Red);
        cyan = gd_get_color(gd:im, color:Cyan);
        white = gd_get_color(gd:im, color:White);
        gd_arc(gd:im, cx:500,cy:500, width:100, color:Blue, height:100, start_angle:0, end_angle:180);
        gd_arc(gd:im, cx:700,cy:700, width:100, color:Blue, height:100, start_angle:0, end_angle:180, filled:true, gdChord:true);
        gd_write(gd:im,format:"jpg",filename:"/html/images/print.jpg",quality:100);

AUTHOR

Written by Pierre Laplante, <laplante@sednove.com>