diff options
Diffstat (limited to 'src/jogl')
3 files changed, 21 insertions, 16 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/Animator.java b/src/jogl/classes/com/jogamp/opengl/util/Animator.java index 31abe099d..311b4141f 100644 --- a/src/jogl/classes/com/jogamp/opengl/util/Animator.java +++ b/src/jogl/classes/com/jogamp/opengl/util/Animator.java @@ -253,9 +253,9 @@ public class Animator extends AnimatorBase { } } - public synchronized void start() { + public synchronized boolean start() { if ( isStartedImpl() ) { - throw new GLException("Start: Already running (started "+isStartedImpl()+" (false))"); + return false; } if (runnable == null) { runnable = new MainLoop(); @@ -271,7 +271,9 @@ public class Animator extends AnimatorBase { thread.setDaemon(true); // don't stop JVM from shutdown .. thread.start(); finishLifecycleAction(waitForStartedCondition); + return true; } + private class WaitForStartedCondition implements Condition { public boolean result() { return !isStartedImpl() || (!drawablesEmpty && !isAnimating) ; @@ -279,13 +281,14 @@ public class Animator extends AnimatorBase { } Condition waitForStartedCondition = new WaitForStartedCondition(); - public synchronized void stop() { + public synchronized boolean stop() { if ( !isStartedImpl() ) { - throw new GLException("Stop: Not running (started "+isStartedImpl()+" (true))"); + return false; } stopIssued = true; notifyAll(); finishLifecycleAction(waitForStoppedCondition); + return true; } private class WaitForStoppedCondition implements Condition { public boolean result() { diff --git a/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java b/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java index 6bac1646b..741d4461b 100644 --- a/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java +++ b/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java @@ -137,9 +137,9 @@ public class FPSAnimator extends AnimatorBase { } } - public synchronized void start() { + public synchronized boolean start() { if (timer != null) { - throw new GLException("Already started"); + return false; } stateSync.lock(); try { @@ -148,14 +148,15 @@ public class FPSAnimator extends AnimatorBase { } finally { stateSync.unlock(); } + return true; } /** Stops this FPSAnimator. Due to the implementation of the FPSAnimator it is not guaranteed that the FPSAnimator will be completely stopped by the time this method returns. */ - public synchronized void stop() { + public synchronized boolean stop() { if (timer == null) { - throw new GLException("Already stopped"); + return false; } stateSync.lock(); try { @@ -168,6 +169,7 @@ public class FPSAnimator extends AnimatorBase { } finally { stateSync.unlock(); } + return true; } public synchronized boolean pause() { diff --git a/src/jogl/classes/javax/media/opengl/GLAnimatorControl.java b/src/jogl/classes/javax/media/opengl/GLAnimatorControl.java index 0282b3ad0..2c8c7cca3 100644 --- a/src/jogl/classes/javax/media/opengl/GLAnimatorControl.java +++ b/src/jogl/classes/javax/media/opengl/GLAnimatorControl.java @@ -31,10 +31,6 @@ package javax.media.opengl; /** * An animator control interface, * which implementation may drive a {@link javax.media.opengl.GLAutoDrawable} animation. - * <P> - * Note that the methods {@link #start()} and {@link #stop()} - * shall be implemented fail-fast, ie {@link #start()} fails if not started, etc. - * This way an implementation can find implementation errors faster. */ public interface GLAnimatorControl { @@ -127,12 +123,14 @@ public interface GLAnimatorControl { * <P> * If started, all counters (time, frames, ..) are reset to zero. * + * @return true is started due to this call, + * otherwise false, ie started already or unable to start. + * * @see #stop() * @see #isAnimating() * @see #getThread() - * @throws GLException if started already */ - void start(); + boolean start(); /** * Stops this animator. @@ -142,12 +140,14 @@ public interface GLAnimatorControl { * or in some cases from an implementation-internal thread like the * AWT event queue thread. * + * @return true is stopped due to this call, + * otherwise false, ie not started or unable to stop. + * * @see #start() * @see #isAnimating() * @see #getThread() - * @throws GLException if not started */ - void stop(); + boolean stop(); /** * Pauses this animator. |