This module provides a function to extend an image with additional shapes.
Fully supported image formats are:
The errors raised by functions of this module have the namespace http://zorba.io/modules/image/error (associated with prefix ierr).
paint
($image as xs:base64Binary, $shapes as object()*) as xs:base64Binary
Extends the passed image with a sequence of shapes. |
declare function paint:paint($image as xs:base64Binary, $shapes as object()*) as xs:base64Binary
Extends the passed image with a sequence of shapes.
The shapes are passed as a sequence of elements.
The possibilities for shape elements are:
{
"line" :
{
"start" : [0, 0],
"end" : [80, 80]
}
}
{
"polyLine" :
{
"points" : [ [10, 10], [30, 10], [30, 30], [10, 30] ]
}
}
{
"strokedPolyLine" :
{
"points" : [ [10, 10], [40, 80], [50, 30] ],
"strokeLength" : 10,
"gapLength" : 2
}
}
{
"rectangle" :
{
"upperLeft" : [ 20, 20 ],
"lowerRight" : [ 50, 50 ]
}
}
{ "roundedRectangle" :
{
"upperLeft" : [ 20, 20 ],
"lowerRight" : [ 50, 50 ],
"cornerWidth" : 10,
"cornerHeight" : 10
}
}
{
"circle" :
{
"origin" : [ 50, 50 ],
"radius" : 5
}
}
{
"ellipse" :
{
"origin" : [ 50, 50 ],
"radiusX" : 30,
"radiusY" : 20
}
}
{
"arc" :
{
"origin" : [ 50, 50 ],
"radiusX" : 10,
"radiusY" : 20,
"startDegrees" : 180,
"endDegrees" : 270
}
}
{
"polygon" :
{
"points" : [ [10, 10], [30, 10], [30, 30] ]
}
}
{
"text" :
{
"origin" : [ 50, 50 ],
"text" : "Hello World!",
"font" : "Arial",
"font-size" : 12
}
}
Optionally, each of the shape elements can contain elements to define the stroke with, stroke color, fill color, and anti-aliasing.
E.g.:
{
"polygon" :
{
"strokeWidth" : 3,
"strokeColor" : "#FF0000",
"fillColor" : "#00FF00",
"antiAliasing" : fn:true(),
"points" : [ [ 10, 10 ], [ 40, 80 ], [ 50, 30 ] ]
}
}