GraphicImage Template

drawPolygon()

Draw a polygon

Syntax

GraphicImage = rb.GraphicImage.drawPolygon(points, colour, options)

Parameters

The 'drawPolygon' method takes 3 parameters:

Results

The 'drawPolygon' method returns GraphicImage:

Remarks

Draw a rectanglem given it's top left and bottom right coordinates. By default the rectangle is drawn with a border but is not filled. Set the 'fill' option on the last parameter to cause the rectangle to be solid.

The last parameter to this call is an optional set of 'options' expressed as a JavaScript object. To specify a non-default value for one of these options, include the options object.

Currently defined flags are :

Example

  // Create an empty 100x100 pixel image
  var img = (new GraphicImage).create(100,100);

  // Draw a blue trapeze within the image, border 3 pixels wide
  var blue = img.colourAlloc(  0,0,255);

  img.setPenWidth(3);
  img.drawPolygon(  [{x:20,y:20},
                     {x:80,y:20},
                     {x:90,y:40},
                     {x:10,y:40}]
                    blue});