A simple image builder.

Expressions:

• render(width, height) - render image
• draw(align,offsetX, offsetY,image) - draw image
• image(file|url|stream) - load image
• save(file|stream,format,image) - save image
• scale(width,height) - height is optional(use width) e.g: scale(50%) == scale(50%,50%)
• fit(width,height) - relative scale the image until if fits (default as scale) bounds of the given box
• rotate(degrees,x,y) - the rotation position x and y are optional (default is 50%)
• fill(color) - fill with color
• margin(left,top,right,bottom) - add margins to image (resize image canvas)

Example, how to create square 50px50p and 20px20p tumbnail images :

def b = new org.groovydev.SimpleImageBuilder()
        def result = b.render(width:'100px',height:'100px') {
           fill(color:'ffffff')
           def small
           image(file:'image.jpg') {
             small = fit(width:100,height:100)
           }
           draw(align:'center', image:small)
           fit(width:50,height:50) {
             save(file:'thumbnail-50p.png', format:'png')
           }
           fit(width:20,height:20) {
             save(file:'thumbnail-20p.png', format:'png')
           }
        }