Ok, I'm not exactly sure how I can use the Multiplexer patch efficiently. I want to be able to update the variable multiple times, so the default value should only be used once, and then for everything else the new updated value should be used. Is there a patch that will only switch once, and then stop taking new values? Kind of like a hacked Sample & Hold.
On 16 September 2010 05:29, Achim Breidenbach <[email protected]> wrote: > Hi Charlie, > > Maybe you want to have a look at the "Feedback" patch. Once placed within > your macro (not "patch" - the term "custom patch" is used for patch > extensions you programmed in another language) and run the composition, the > feedback patch shows your "X" and "Y" output parameter twice: on the left > side you can enter some "default" values, on the right side you get the > values from the last iteration. Now you will need some "state" of your > composition, so that the macro knows which x and y it should use. > > I think that you should implement this complex state machine in a Java > Script patch rather than in pure QC, because you will have a better > understanding whats going on. Such constructions with feedback loops and > recursive connections in pure QC can behave in a totally different way than > you expect because you can't rely on a certain order of computation. > > Achim Breidenbach > Boinx Software > > On 15.09.2010, at 18:01, Charlie Francis wrote: > > > This has had me confused for quite a long time. I have built a patch that > initiates an iterator on command using a stop watch and an external timebase > for use with animations. > > > > My requirements for this patch is that it will iterate from one number to > another. Once the iteration has stopped, it should update the starting value > with the final end value. This way when the external timebase is reset back > to 0, the outputted value should still be the same as the end value, meaning > that if I connect this to a sprites x position, it will continue to stay in > the same position. > > I can then update the end value with a new number and begin the iteration > again, using the external timebase (stop watch), to animate the sprite to a > new position. > > > > Now I have all of this working correctly (demo composition attached), > just enter in the coords you want the sprite to move to, and then click > 'Start / Stop', once the animation has stopped, click 'Start / Stop' again > and type in some new coords. > > > > I have a few problems with this. If the animation is stopped mid way > through, the sprite returns to it's starting position. I tried feeding the > end value straight into the start value, but that changes the interpolation > curve. > > The other problem is that I can't set a default start position, The > sprite will always start at 0,0. I have been thinking how I can change this > for a while but not come up with a solution. My only other programs > experience is with languages like PHP, so this style of programming is very > different to what I'm used to. > > > > So my main question is! ..... > > > > Is there a way to have 2 inputs into a patch, so that you can set a > default value, and then update it from another place within the composition? > Kind of like how you store and update variables in PHP. > > > > Thanks, > > Charlie > > <animator.qtz> _______________________________________________ > > Do not post admin requests to the list. They will be ignored. > > Quartzcomposer-dev mailing list ([email protected] > ) > > Help/Unsubscribe/Update your Subscription: > > > http://lists.apple.com/mailman/options/quartzcomposer-dev/achim%40boinx.com > > > > This email sent to [email protected] > >
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