[Interest] QML Skew animation?

[Gunnar Sletta]

Hi Mark,

Starting 5.4 you can implement the skew yourself using the Matrix4x4 as input to the Item.transform. 

In 5.3 the way through public API would be to use a ShaderEffect or to implement a custom item which returns a QSGTransformNode with a skew matrix which has a textured node as child.

If you want to implement and contribute a Skew and SkewAnimator types, I'd be happy to review them. Otherwise, feel free to make a suggestion on bugreports.qt-project.org. 

cheers,
Gunnar

On 24 Jun 2014, at 10:57, Mark Gaiser <markg85 at gmail.com> wrote:

> On Mon, Jun 23, 2014 at 10:55 PM, Ian Monroe <ian at monroe.nu> wrote:
>> On Mon, Jun 23, 2014 at 1:48 PM, Mark Gaiser <markg85 at gmail.com> wrote:
>>> Hi,
>>> 
>>> QML has the Rotate and Scale possibility, but i can't find a way to do
>>> image skewing. If you don't know what skewing is, please look at this
>>> image [1].
>>> 
>>> Skewing is possible in QML's canvas item, but that isn't suited for
>>> animating stuff. Then QML also has the Matrix4x4 which "could" be used
>>> to do a skewing animation, but that makes it more complicated then it
>>> has to be. Shaders are another possibility...
>>> 
>>> What i'm searching for is some easy to use:
>>> 
>>> Rectangle {
>>>    ....
>>>    transform: Skew { x: 10; y: 10}
>>>    ....
>>> }
>>> 
>>> or something alike..
>>> or a "SkewAnimator" just like you have a ScaleAnimator and a couple others.
>> 
>> Rotating on the Z axis skews the image, though I'm not saying it meets
>> your needs for a skewing operation.
>> 
>> Ian
> 
> Hi Ian,
> 
> Thank you for your suggestion. I wasn't sure if that would work so i
> tried it. Sadly, that's not giving the skewing results i was
> expecting..
> Look like QML (besides canvas) doesn't have this capability?
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