I've updated the first groodle with the recent addition of aliases. Also it is no longer required to register GraphicsBuilder's extensions, it will do it for you. Finally animations now have more friendly methods like start, stop, pause, resume and restart; all these additions make the code much shorter while keeping the same behavior in place, see for yourself.



import groovy.swing.SwingBuilder import groovy.swing.j2d.GraphicsBuilder import groovy.swing.j2d.GraphicsPanel def gb = new GraphicsBuilder() def go = gb.group { def foreground = color(r:1,g:1) def background = color('black') (0..9).each { i -> (0..19).each { j -> def cell = "c_${i}_${j}" rect( x: 20*j, y: 20*i, w: 20, h: 20, bc: background, f: animate( [foreground,background], startValue: background, duration: 5000, start: false, id: "$cell" ), mouseEntered: {e -> gb."$cell".restart()} ) } } } def swing = SwingBuilder.build { frame( title: "Groodles", size: [410,230], locationRelativeTo: null, show: true ){ panel( new GraphicsPanel(), graphicsOperation: go ) } }
A yellow-ish color is set on line 8 using aliases, similar calls may be like the following ones

• def foreground = 'yellow'
• def foreground = color( 'yellow' )
• def foreground = color( color: 'yellow' ) )
• def foreground = color( red: 1, green: 1 )
• def foreground = rgba( red: 1, green: 1 )
• def foreground = rgba( r: 1, g: 1 )

The f on line 14 stands for fill, finally the animation is restarted every time the mouse steps into one of the rectangles, with a simple call, no need to expose the internal state of the animation.

You may find these and other features in the next version of GraphicsBuilder.

Keep on Groovying