I need to be able to animate drag and drop in my vertical list. I used vuedraggable, wrapped my list in a transition-group and it all worked sweet. Until I fetch new data from the server. Now because of the introduction of transition-group for a split second the old data and the new data live together in the DOM causing the expansion of the list and pushing subsequent div down and back up.
This is kind of expected per the docs:
the DOM operations for insertion and/or removal will be executed
immediately on next frame (Note: this is a browser animation frame,
different from Vue’s concept of nextTick).
Regardless of being able to drag and drop the element, if we were to fade in/fade out the new/old elements they will co-habitate for the time of the animation, which is not great as seen in this pen
Anyway to fade out, change the data, then fade in the new one, while maintaining the height of the list?
Note that without fade the problem is still obvious:
Pen of my issue: click the switch data button to see the issue.
Turns out it's pretty know issue. By reading through this thread and toying with this example, i was able to achieve something to my liking by using:
list-leave-active {
display: none;
}
Resulting Pen
A css fix may be to wrap the contents within a box of some height and set overflow hidden.
So, even when new elements co-exist the jump in scrollbar can be avoided.
http://codepen.io/TPDBrendan/pen/xgwWwM
I'm trying to get a full page clip style slider set up to handle resize, but I seem to be going in circles at this point despite trying a bunch of suggestions on this topic from the forum.
I've already accomplished the basic effect - screen split in half vertically, each side has a timeline that is wiping towards the center revealing the slide below, which is simultaneously sliding towards center. Right side is on a slight delay intentionally. If you load the codepen and don't resize, you'll see what I mean.
Window resizing is throwing me a curveball, though. I've set up debounced functions to kill the 2 current timelines and then rebuild them again with new resized viewport dimensions. It's getting the new window dimensions and setting up a new timeline with these specs succesfully, but resizing several times reveals that it must not be killing the old timelines and is just creating multiple copies at each viewport size.
I'd like to be able to save the progress of the current timeline before destroying it and then initialize the new, resized timeline to this progress point so that to the user it just looks like one animation that pauses slightly on resize. Would also be great if, once the animation completes, window resize will not be able to initialize another timeline, so it can rest on the final slide. But, for now, just figuring out how to solve the current duplicate timelines issue would be awesome!
These are functions I'm using on resize, but kill doesn't seem to do anything.
function resizeLead(){
prog1 = tl.progress(),
prog2 = tl2.progress();
tl.seek(0).kill();
tl2.seek(0).kill();
}
function resizeTrail(){
windowSize[0] = $(window).width();
windowSize[1] = $(window).height();
buildTL();
}
When a user presses a button i add a scale transform to make it zoom out like safari's tabbing. when user presses the webview it comes back up. When the view is rotated, i use to get the values of how i wanted the frame to look like in tab mode, and checked if it was in tab mode when rotating and applied the frame. it works, and ive tried taking it out. The issue is, if i rotate like 10 times, a black line on the right side gets bigger and bigger going inside the webview. i have logged tons of objects for the web view and its scrollview to see if anything is off, the scrollinset/offset is correct, the frame is correct, the transform is correct too. i cant figure out why theres the black line. i tried refreshing the webview to see if its the webpage, and it doesnt fix that ether,the scale transform values is
CGAffineTransformMakeScale(0.6, 0.68)
for zoom out, and 1, 1 for zoom in. if anyone wants to see the effect just apply that to a uiwebview and start rotating the device about 10 times and you would then really see it.
heres how the web view looks when rotating a bunch of times:
on the right side theres that thick black line, it gets bigger with every rotate but ONLY grows when that transform is added, if its normal size again it stops but stays there.
When you transform any view, their frames do change, If you are using autoresize flag, check it since transforming changes frames and autoresizing also changes frames and this creates weird result.
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.