No java2d animation shown on Linux about doodle

[noelwelsh]

🤔If the window doesn't resize that suggests the whole computation isn't running. Does a more normal example (e.g. Picture{ implicit alg => alg.circle(100) }.draw(), or any of the examples in the image subproject) work?

Unfortunately I don't have a Linux box at hand to test.

[dacr]

OK with 0.9.3 :

import $ivy.`org.creativescala::doodle:0.9.3`
import doodle.syntax._
import doodle.java2d._
Picture{ implicit alg => alg.circle(100) }.draw()
scala.io.StdIn.readLine("Enter to exit...") // required when run as a script

OK also with 0.9.4-SNAPSHOT :

import $ivy.`org.creativescala::doodle:0.9.4-SNAPSHOT`
import doodle.syntax._
import doodle.java2d._
Picture{ implicit alg => alg.circle(100) }.draw()
scala.io.StdIn.readLine("Enter to exit...") // required when run as a script

both displayed exactly the same picture :

[noelwelsh]

I'll make some changes in the near future that should reduce the possibility of error when using animate. If that doesn't fix it we'll have to dig deeper.

[noelwelsh]

I've pushed a new 0.9.4-SNAPSHOT version. Can you try this, say the PulsingCircle example?

[dacr]

Unfortunately I still don't see the animation and I got the same small white rectangle.
From thread point of view, AWT-EventQueue-0 is in runnable state on this stack trace :

"AWT-EventQueue-0" #23 prio=6 os_prio=0 tid=0x00007f0def505000 nid=0x3670 in Object.wait() [0x00007f0d37bfa000]
   java.lang.Thread.State: RUNNABLE
	at ammonite.$file.vectorgraphics$minusdoodle$minusanimate$minusexample$$$Lambda$2252/1526894424.apply(Unknown Source)
	at doodle.java2d.package$Picture$$anon$1.apply(package.scala:61)
	at doodle.java2d.package$Picture$$anon$1.apply(package.scala:59)
	at doodle.java2d.effect.Java2DPanel.register$1(Java2DPanel.scala:60)
	at doodle.java2d.effect.Java2DPanel.$anonfun$render$1(Java2DPanel.scala:71)
	at doodle.java2d.effect.Java2DPanel.$anonfun$render$1$adapted(Java2DPanel.scala:71)
	at doodle.java2d.effect.Java2DPanel$$Lambda$2256/1625679293.apply(Unknown Source)
	at cats.effect.IO$.$anonfun$async$1(IO.scala:1062)
	at cats.effect.IO$.$anonfun$async$1$adapted(IO.scala:1060)
	at cats.effect.IO$$$Lambda$2209/1241213245.apply(Unknown Source)
	at cats.effect.internals.IORunLoop$RestartCallback.start(Redefined)
	at cats.effect.internals.IORunLoop$.cats$effect$internals$IORunLoop$$loop(IORunLoop.scala:119)
	at cats.effect.internals.IORunLoop$.startCancelable(IORunLoop.scala:41)
	at cats.effect.IO.unsafeRunCancelable(IO.scala:289)
	at cats.effect.Concurrent$.$anonfun$liftIO$2(Concurrent.scala:330)
	at cats.effect.Concurrent$$$Lambda$2258/1658052214.apply(Unknown Source)
	at monix.eval.internal.TaskCreate$.$anonfun$cancelableEffect$1(TaskCreate.scala:72)
	at monix.eval.internal.TaskCreate$$$Lambda$2259/1163330973.apply(Unknown Source)
	at monix.eval.internal.TaskCreate$Cancelable0Start.apply(TaskCreate.scala:53)
	at monix.eval.internal.TaskCreate$Cancelable0Start.apply(TaskCreate.scala:41)
	at monix.eval.internal.TaskRestartCallback.start(Redefined)
	at monix.eval.internal.TaskRunLoop$.executeAsyncTask(TaskRunLoop.scala:583)
	at monix.eval.internal.TaskRunLoop$.goAsync4Future(TaskRunLoop.scala:634)
	at monix.eval.internal.TaskRunLoop$.startFuture(TaskRunLoop.scala:530)
	at monix.eval.Task.runToFutureOpt(Task.scala:583)
	at monix.eval.Task.runToFuture(Task.scala:541)
	at monix.reactive.internal.operators.MapTaskObservable$MapAsyncSubscriber.onNext(MapTaskObservable.scala:159)
	at monix.reactive.internal.operators.MapOperator$$anon$1.onNext(MapOperator.scala:43)
	at monix.reactive.internal.builders.Zip2Observable.rawOnNext$1(Zip2Observable.scala:62)
	at monix.reactive.internal.builders.Zip2Observable.monix$reactive$internal$builders$Zip2Observable$$signalOnNext$1(Zip2Observable.scala:81)
	at monix.reactive.internal.builders.Zip2Observable$$anon$2.onNext(Zip2Observable.scala:167)
	- locked <0x00000000ed080908> (a java.lang.Object)
	at monix.reactive.subjects.PublishSubject.sendOnNextToAll(PublishSubject.scala:122)
	at monix.reactive.subjects.PublishSubject.onNext(PublishSubject.scala:97)
	at doodle.java2d.effect.Canvas$$anon$1.actionPerformed(Canvas.scala:46)
	at javax.swing.Timer.fireActionPerformed(Timer.java:313)
	at javax.swing.Timer$DoPostEvent.run(Redefined)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Redefined)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Redefined)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Redefined)
	at java.awt.EventDispatchThread.pumpEvents(Redefined)
	at java.awt.EventDispatchThread.pumpEvents(Redefined)
	at java.awt.EventDispatchThread.run(Redefined)

I'll take a deeper look using intellij debugger to see if I can provide you more information about what's going on...

[dacr]

OK I've just created a small dedicated project based on your animation example (in order to use the IDE debugger), and this time it works fine :) looks like the issue is related to ammonite or some undesired interaction with it.

[dacr]

OK once again, I found a way to have doodle animations work fine with ammonite (script or REPL mode) : Just put all the code within an object like this :

import $ivy.`org.creativescala::doodle:0.9.4-SNAPSHOT`

import cats.instances.all._
import doodle.core._
import doodle.syntax._
import doodle.java2d.effect._
import doodle.java2d._
//import doodle.java2d.algebra._
import doodle.interact.syntax._
import monix.reactive.Observable

object TryIt {
  val frame = Frame.size(600, 600)

  def circle(diameter: Int): Picture[Unit] =
    Picture { implicit algebra =>
      algebra
        .circle(diameter.toDouble)
        .strokeColor(Color.crimson)
        .on(algebra
          .circle((diameter - 9).toDouble)
          .strokeColor(Color.crimson.spin(30.degrees)))
        .on(algebra
          .circle((diameter - 18).toDouble)
          .strokeColor(Color.crimson.spin(60.degrees)))
        .strokeWidth(3.0)
        .noFill
    }

  val animation: Observable[Picture[Unit]] =
    Observable
      .repeat(1)
      .scan((3, 18)) { (state, _) =>
        val (inc, diameter) = state
        if (diameter >= 500) (-3, diameter - 3)
        else if (diameter <= 18) (3, diameter + 3)
        else (inc, diameter + inc)
      }
      .map { case (_, d) => circle(d) }


  def go = animation.animateFrames(frame)
}

TryIt.go

scala.io.StdIn.readLine("Enter to exit...") // required when run as a script

So I close the issue, as this is something I've already encountered with some other scala libraries (such as akka-http) while trying to use them with amonite.

[noelwelsh]

Thanks for debugging this! Good to know what the issue is, in case someone else has the same problem.