gistfile1.java

import groovy.beans.Bindable
import org.pushingpixels.trident.Timeline.TimelineState

@Bindable
class Model {
  float s = 0.5f
  float ra = 0.0f
}
model = new Model()

anim = timeline(model, duration: 4000, loop: 'reverse') {
  interpolatedProperty(property: "s", from: 0.5f, to: 2.0f)
  interpolatedProperty(property: "ra", from: 0f, to: 360f)
}
mouseHandler = {
  anim.state == TimelineState.SUSPENDED? anim.resume() : anim.suspend()
}

cx = 100
cy = 100
radius = 25

panel {
  borderLayout()
  canvas = canvas(preferredSize: [200,200], constraints: context.CENTER) {
    group {
      antialias true
      background(color: color("white"))
      group(sx: bind{model.s}, sy: bind{model.s}, ra: bind{model.ra},
        mouseClicked: mouseHandler) {
        rect(x: cx-radius, y: cy-radius, w: radius*2, h: radius*2, f: color('blue'))
        circle(cx: cx-radius, cy: cy-radius, r: radius/2, f: color('red'))
        circle(cx: cx-radius, cy: cy+radius, r: radius/2, f: color('green'))
        circle(cx: cx+radius, cy: cy-radius, r: radius/2, f: color('yellow'))
        circle(cx: cx+radius, cy: cy+radius, r: radius/2, f: color('violet'))
      }
    }
  }
  label("Click shape to pause/resume", constraints: context.SOUTH)
  swingRepaintTimeline(canvas, loop: true)
}