transform-fun | Demo repository for Exploring the Android Transform API | Animation library
kandi X-RAY | transform-fun Summary
kandi X-RAY | transform-fun Summary
Demo repository for "Exploring the Android Transform API", presented at DroidKaigi 2019.
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QUESTION
I have a div
that I want to apply CSS transform scale property with a dynamic value based on the parent div's scroll position.
So say I have a div
with an id called #circle
that has a parent div
called #main
. I want to find the #main
div's height and divide it by 100 to create a dynamic value. Using this dynamic value, I want to animate the #circle
div
on scroll event. So when the user is at the top of the #main
div
, the #circle
is scaled at zero per cent, and when the user scrolls to the bottom of the main
div
, the circle has a scaling value of 100%.
Here is a jsFiddle.
...ANSWER
Answered 2021-Mar-22 at 20:40You can use the offsetHeight
property to get the height of the element.
ex.
document.getElementById("circle").offsetHeight
QUESTION
Can anyone explain this behavior?
I have three nested elements: a container div
, a subcontainer div
and a "shape/image" div
. The markup is like below:
ANSWER
Answered 2020-Dec-21 at 09:16From the specification:
By default, transformed elements do not create a 3D rendering context and create a flattened representation of their content. However, since it is useful to construct hierarchies of transformed objects that share a common 3-dimensional space, this flattening behavior may be overridden by specifying a value of
preserve-3d
for thetransform-style
property. This allows descendants of the transformed element to share the same 3D rendering context.
So simply add transform-style:preserve-3d
to the subcontainer element and the perspective of the grand-parent will be respected:
QUESTION
I'm starting as a front-end web developer. Currently, I'm having trouble when trying to implement a layout for a customer website.
The designer is asking for a layout like this.
As you can see, the layout is not rectangular, the navbar and also the footer, and a lot of the website sections are diagonal.
I googled a lot and I found 2 methods of achieving that.
The first method is by creating some SVG and adding those as background in CSS for everything that is rotated. This causes a problem when the screen is resized. If the viewport of the user is very wide, the rotating effect is lost a bit because the SVG is stretched.
The second method I found is by applying a transform skew
for every section and content inside to avoid rotated text. That is a lot of work because I have to apply the rotation practically in every element of the website. However, it wins flexibility against the first method because with media query I can fix the rotation if the effect is getting lost.
Did anyone face this problem before? I'm approaching correctly the problem? What method would you use? Does anyone know about other methods to solve this problem?
UPDATEAfter having seen some of your help I started to code applying the answers. Thank you to @A Haworth, @G-Cyrillus, @Nathan
I have not found a way to make the right part of the image hidden by the bar. Maybe I could tint the last option of the linear-gradient as the background color. Does anyone have a better solution?
Here is the code.
...ANSWER
Answered 2020-Nov-01 at 17:37You could set the header and footer elements to contain a position:relative; and then use a position:absolute; psuedo ::before / ::after elements to create a skewed element that sits behind the content with it's respective top / bottom position depending on whether this is the header or footer.
QUESTION
In the code below, it looks like the %
value for transform: translate()
refers to the width|height
dimension of shiftingDiv
.
This page says %
refers to the reference box as defined by transform-box
. Here, transform-box: view
is being applied which means the reference box is the nearest SVG viewport. What does this mean in the example below?
ANSWER
Answered 2020-Oct-10 at 17:48This value describes two or values representing both the abscissa (x-coordinate) and the ordinate (y-coordinate) of the translating vector. A percentage as first value refers to the width, as second part to the height of the reference box defined by the transform-box property.
In short, this means it's the percentage of the element that the transform
property is on.
QUESTION
When I am using Intel IPP's ippsFFTFwd_RToCCS_64f and then ippsMagnitude_64fc I get a massive peak at zero index in magnitudes array.
My sine wave is long and main component I am interested is somewhere between 0.15 Hz and 0.25 Hz. I take the sample with 500Hz sampling frequency. If I reduce mean from the signal before FFT I get really small zero component not that peak anymore. Below is a pic of magnitudes array head:
Also the magnitude scaling seems to be 10 times the magnitude I see in the time series of the signal e.g. if amplitude is 29 in magnitudes it is 290.
I Am not sure why this is so and my question is 1. Do I really need to address the zero index peak with mean reduction and 2. Where does this scale of 10 come?
...ANSWER
Answered 2020-Jul-23 at 02:17Do I really need to address the zero index peak with mean reduction?
For low frequency signal analysis a small bias can really interfere (especially due to spectral leakage). For sake of illustration, consider the following low-frequency signal tone
and another one with a constant bias tone_with_bias
:
QUESTION
I've been trying to run my nuxt app in docker and the build seem to work for the most part other than it keep missing core.js dependencie. I've tried adding core-js manually, babel, tried to run the suggested install command in the error, but to no help.
Dockerfile:
...ANSWER
Answered 2020-Jun-22 at 15:38This had nothing to do with docker. I'm not sure how, but at some point reinstalling all the node modules installed the wrong core-js version.
Installing "core-js": "^2"
seems to have solved it for now. Perhaps upgrading nuxt version would help too.
QUESTION
I'm writing an audio plugin and I would like to convert a series of real numbers representing sample values into a complex array representing frequency and phase. Then I want to be able to do the opposite, turning a complex array of frequency and phases to a series of real numbers, reconstructing the original data.
I'm using Intel MKL and I see only the possibility to perform real->real conversions or complex->complex conversions. Here's the reference I'm using: Intel MKL FFT Functions.
In that reference, there are two overloaded functions: DftiComputeForward and DftiComputeBackward. So, I would like to use these to do the conversions. In the reference for DftiCreateDescriptor
, the only options available for DFTI_FORWARD_DOMAIN
are DFTI_COMPLEX
and DFTI_REAL
, but no option for mixed conversions.
Edit
I found that the phase is actually equal to atan(imaginary/real)
. I don't want to mislead anyone getting information from questions.
Edit
I just learned that it's best to use atan2(imaginary,real)
. More information is in the comments.
ANSWER
Answered 2020-Jun-07 at 15:50Every real number is a complex number: ℝ ⊂ ℤ. So going forward from float
or double
in time domain to complex
is trivial. The language does that for you!
QUESTION
My app working fine in browser and using Cordova Geolocation as plugin when I start an android build I am getting this error
...ANSWER
Answered 2020-Mar-21 at 11:48After a few try :
- Install
npm i @babel/plugin-proposal-numeric-separator
- Go to
node_modules/@babel/preset-env/lib/available-plugins.js
- Add
var _pluginTransformNumericSeperator = _interopRequireDefault(require("@babel/plugin-proposal-numeric-separator"));
- And add
"proposal-numeric-separator": _pluginTransformNumericSeperator
to default variable
QUESTION
I am receiving the following error when attempting to run a test suite using jest:
...ANSWER
Answered 2020-Mar-16 at 14:32Issue resolved. Issue was caused by running the tests by using the "jest" command in the terminal which is different from using the npm test script which also only runs the "jest" command. The difference is the former was using a higher version of Jest which I had installed globally and ended up running into issues whereas the latter used the version of jest that corresponds with the version in the package.json.
QUESTION
I'm trying to install create-react-app
in my project, but a package.json without a start script is generated, and I get an error "A template was not provided. This is likely because you're using an outdated version of create-react-app.
Please note that global installs of create-react-app are no longer supported." As recommended in other questions regarding this issue, here's what I've already tried:
npm uninstall -g create-react-app
, which create-react-app
then rm -rf [the path that was listed]
(now when I enter which create-react-app
it says which: no create-react-app in .....
, and restarted my computer.
I don't know what else to try. Any help appreciated.
Here is my full error message/what I get when trying to run create-react-app:
...ANSWER
Answered 2019-Dec-18 at 22:10So the best thing to do is to remove create-react-app
globally using npm uninstall create-react-app -g
or yarn global remove create-react-app
because that is likely the reason you're seeing this error message:
This is likely because you're using an outdated version of create-react-app. Please note that global installs of create-react-app are no longer supported.
Once you've removed it, please note you don't need to install create-react-app
globally to initialize a new project, its recommended you use the npx
package runner tool that comes with at least node 5.2
and above. So npx
will basically allow you to run a package without installing it, so on your case create-react-app
.
So to create a new project, just type in : npx create-react-app myapp
and that will initialize your react app.
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