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);
SEE ALSO
AUTHOR
Written by Pierre Laplante, <laplante@sednove.com>
MODIFICATIONS
1.0 2014-09-09 21:24:14 laplante@sednove.com
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