I have a site where I use TimelineLite paused and manually progress the timeline with a scrollbar.
I also have 5 pauses littered throughout the timeline so that I can click a button and watch one 'scene' of the timeline.
Each animation scene basically tweens offscreen at the top while the next element tweens into the screen from the bottom.
Everything works fine.
However when I resize the browser, I notice that the tweens of the timeline are still animating from the old values.
My timeline consists of TweenLite.to(...) tweens. For example if my browser height is 700 pixels and I tween scene 1 out of view and scene 2 into view, when I resize and use timeline.reverse();, I see scene 2 tween back to 700 pixels. (Scene 2 is absolutely positioned with translateY set to 100%) However since my tween is using y: '100%' I would expect it to reverse to 100% not this old pre resize value of 700 pixels.
Oddly enough, scene 1, which was originally at 0,0 and tweened to 0,-100%, still tweens to a percent value so that one looks ok.
So I find it really odd that scene 2 is tweening in pixels when I set a percent value and scene 1 tweens in percent.
Whats going on and how do I prevent this pixel value from caching in my tween?
I've already tried invalidate(), kill(), clear() and then setting the timeline to null, followed by reinserting new tweens on a new timeline but somehow those tween values still exist.
I'm at a loss. Any help would be greatly appreciated.
I think what you should be using is yPercent for animating your tweens instead of absolute pixel values or instead of simply animating the y property.
What yPercent (and xPercent) do is that they will always align your element regardless on the screen size, hence responsive, based on the value that you provide.
Here is an example made by the GSAP guys themselves which, by the looks of it and by what I was able to understand from your question, is actually very close to your own situation as well.
There is also a video tutorial by Petr Tichy who explains the differences between using x and xPercent.
P.S. Can you share this website you are working on or, prepare a fiddle or a codepen isolating the problem? This would help us in proposing an accurate solution.
Answering my own question since no correct answer exists. GSAP saves any tween data on the actual DOM element. Despite me setting the timeline or tweens to null, it had no effect because as I was tweening the same element, it would check the DOM element if it had the variables GSAP had saved prior.
To fix this I had to manually reset the DOM element variable.
If this is a problem for you, check the ._gsTransform variable on the element. You will see some x, y values that you can manually set to 0 or whatever else you need to set it to.
I've figured out how to create an Overlay, center it, and set it's bodyContent to be an existing from my page. So far so good - now I want to make the transition happen smoothly over 1 full second instead of instantaneously.
The examples I've seen indicate that one must know the initial and final positions, but in this case, I don't know them, since I'm just saying:
overlay.set('bodyContent', Y.one('#node'));
overlay.set('centered', true)
I've created a jsbin at http://jsbin.com/ovuxan/5/edit that shows the issue.. (my transition is whacky to say the least) and would appreciate some help in making it smoother.
You can use the WidgetAnim plugin to do this for you. It can be cleaner since the animations are stored in the plugin and invoked by the widget's hide/show functions.
I have quickly used the plugin to animate your overlay here: http://jsbin.com/ohafec/1/edit
Helpful links:
Overlay: Animation Plugin (YUI Blog)
Plugin.WidgetAnim Class
I've got theme transitions (entrance and content with a set offset) on elements which overlap. The issue is as theme transitions are bought to the front of the page the elements which are animated unreliably overlap each other causing a nasty transition when it is returned to the correct z-index.
It doesn't seem to matter how the elements are structured in the visual tree or the z-index applied to the element, the issue still occurs.
Any help very much appreciated - Ideally I want to avoid writing storyboards though, I'm happy with the entrance/content transition in this scenario!
I ran into a similar problem myself. Here are some things you can try:
make sure the "correct" z-order observed at the end of the animation is indeed correct. Putting some label on your items should make that clear if the items have the z-order you intended
make sure the items are are added to the control according to their z-order. In case you use binding make sure the items you add to the collection are arranged by their z-index
in case you are using PrepareContainerForItemOverride make sure the logic around your binding is correct
Hope it helps,
Mihai
I decided simular problems with:
Position: Relative;
Transition: All... (All includes Z-Index)
I made Z-Index:4 and for "HOVERed" elements Z-Index:2000.
Initially I was under the impression that it uses the table row slideup/down animations while inserting/deleting new rows but I doubt if it's doing that as it does it so fluidly even with thousands of items in the list (otherwise it would take a lot of time for the deletions/insertions to work).
Am I right in my assumption that it's simply attaching a new instance of the News list at the bottom of the screen, shrinking the above one while the one at the bottom expands to fill up space?
UPDATE:
Please see this video of what I mean: http://dl.dropbox.com/u/4960327/ReederAnim.mov
I can not tell you exactly how Silvio Rizzi made this, but as you see in the playback, a list view is added behind the shown list view, and the front list view fades out (.alpha = 0.0;) while the list view behind it expands its height per row.
When you desicate it frame by frame it becomes quite clear what he does, and it is really not that advanced. But I have to admit, with the white "milky" polished interface, it looks quite neat.
In addition, you can see that while animating, the background list view only renders the top 7 entries (hopefully calculated by dividing the view height with the average height of the cells shown) making the list view quick to load. Then afterwards, he can load an extended array of cells once you start scrolling, or in a background thread starting once the animation is complete.
I'm quite new to blender, and I'm doing some experiments with it.
I've been searching for a way to make an object disappear from sight at a particular key-frame, without moving it out of the camera view. E.g. at frame 1, cube is there, at (0, 0, 0) and at frame 2, it's not visible anymore, but still there at position (0,0,0), at frame 3 it gets visible again.
After searching the web, I came upon this page which suggests to move the object to another layer, but since it applies to blender 2.49, it seems the software has changed since then: I'm unable to find the 'Layer' option when inserting a key-frame.
I've found some other sites but either they suggest to use a technique similar to the one linked above, or they suggest to change the alpha of the texture, which I'm not interested in.
So, what's the preferred method to make an object invisible in blender 2.59?
Additional information (not relevant for the answer I'm expecting, IMO):
I'm using blender to make models for Unity.
I'm using 2.59 because that's the one that works with the unity version that I have.
There are lots of ways to achieve this effect.
The easiest way is to keyframe the visibility of the object.
To do this, you simply go to the outliner, and click the little eyeball next to your object name, then hover over the closed eyeball and hit "i" to keyframe. The eye will then turn yellow to indicate it's keyframed. Do the same with the camera icon (so that your render behaves the same way). Then go to the point where you want the object to appear, and click the eyball and camera again to make them reappear, then hit "i" again over each to keyframe them... Isn't blender a wonderful program? I love being able to keyframe just about everything! :D
There are also these less easy, but variously useful methods, which you may also use in case you want some sort of transition in your vanishing/appearing:
My perferred way is to just move the opbejct off the screen, keyframe position, then set the animation (in the Graph Editor) curve type to "constant" (Key -> Interpolation Mode -> Constant), and move the object into place and set the keyframe where you want it to appear. It will thus instantaneously appear.
Set the material properties of the object to Transparent, and choose "Z-Transparency" and set alpha to 0. Then simply keyframe the alpha (hover mouse over Alpha value and hit "i"), then go to where you want it to appear, change the alpha value to 1, and keyframe again. This will make it fade in over time, or you can change the curve to constant in the Graph editor, as described in method 1.
If you want to mask the object while it is still in place, you could make a cube around it, set the cube material transparency to "mask", and then move the cube off camera to unmask the object, rather than moving the object. This is handy for when you want to partially unmask something in the course of the animation. For example, if you are creating a text overlay for a video, where you want text to appear as if it's coming out of your hand, you can animate the masked object to follow the contour of your hand as it pulls away to reveal the text.
In Blender 2.65, you can animate the objects visibility toggle in your Outliner panel.
Next to your scene objects there will be three icons: an eye, a cursor, and a camera.
Follow these steps to animate viewport visibility:
Find the object you wish to animate in the Outliner Panel
Mouse over the eye icon and hit "i" on your keyboard to set a keyframe.
Go to the next frame and turn the eye off, then hit "i" moused over it again.
Do the same thing with the camera icon to animate render visibility. I will usually keyframe both the viewport and render visibility icons in tandem so as not to forget to have these toggled when its time to render.
In version 2.9 the eye icon cannot be used to set a keyframe. I've found the best way for me is to use the Object Properties tab and under Transform set the three scale values (X,Y,Z) to zero for invisibility. You can then click the diamond to the right to set the keyframe. To make the object re-appear return the scale values to their original and click on the diamond keyframe icon again.
Obviously you can make it a lot easier for yourself by applying scale to the objects first then just switch them between 0 and 1.
AFAIK there is no easy way to directly set an object invisible in your case. Although the visibility can be animated in Blender (in outline view mive your cursor on the eye and press i) Unity3D doesn't recognise it.
Possible workarounds:
Move it to (1000, 0, 0)
Scale it by a very small value
A more elaborated approach could be to use a driver like when turning FK/IK animation on and off dynamically via a variable.
I found out (today!) that, in Blender 2.8 (& presumably beyond), you can control visibility of objects in animations either in viewports and/or renders. Select the object and, in the Object Properties, open the Visibility section. You will see a dot beside the Viewports and Renders options. Click on the dot in either Viewports or Renders (or both). The relevant boxes should turn green. Either make the object visible or invisible by checking or clearing its box and then click 'i' to insert a keyframe. Repeat the process in other keyframes.
Another way to do this is to make a cube around it and add a boolean modifier to the object you want to disappear, set the operation to difference and select the cube as the modifier's object target. Then turn off the cube's visibility and animate the visibility of the modifier.