gd_arc

Draw an arc.

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>

MODIFICATIONS

1.0 2014-09-09 21:24:14 laplante@sednove.com

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