Apple Game Center what exactly can you re-skin? - game-center

I read elsewhere on here that it's possible to re-skin the Apple Game Center? Few questions about that..
1) What exactly can you re-skin? all of it? or just some parts?
2) Is it wise to re-skin the GUI of game center or is it more trouble than it's worth?
Thanks for any advice.

You can skin Leaderboards - achievements - turnbased games
You can't skin: Login screen - GKMatchMakerView or GKTurnBasedMatchMakerView (actually you can if you're accepting not to use invitation features)

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Plotly Timeline / Gantt Interactive Time Marker?

Would anyone know how to implement a functionality similar to the video playback selection timeline found in most video editor applications / youtube / timeline tools with plotly?
The idea would be that a user could click a specific point on the timeline that may or may not already have a data point and the application would page to that point and load data. For instance a corresponding image pic(t).
I would be interested in a pure python plotly method and or a dash method.
I have currently based my tool off of the example(s) here:
https://plotly.com/python/gantt/
https://dash.gallery/dash-alignment-chart/

AgoraKit - How to create a grid style video session layout?

I'm using Agora sdk for video calling feature in my app. I've tried the advance iOS example, and currently able to see the video call between two users.
However my UI needs to show it in grid layout of same size items (maximum 8 video call views)... Like a vertical UICollectionView of equal sized cells. (screenshot below)
I've tried the Advanced video example from here - https://github.com/AgoraIO/Advanced-Video but couldn't figure out how to make the grids.
Kindly guide me how to do this. Thanks.
I have a small demo that creates NxN grids of all the video feeds in a chat in this example.
https://github.com/maxxfrazer/Agora-iOS-Swift-Example/blob/248a1d2291060891f2fda92a657c2067d841d964/Agora-iOS-Example/ChannelViewController%2BVideoControl.swift#L108
it just leaves black holes where the other ones should be if there's not a square number of people in the chat, but hopefully it is enough to get you started with repositioning views based on the number of connected users.

UI design dpi sizes issue at xxxhdpi Samsung S8plus

Helllo ,
I'm a ux\ui designer. I designed application at photoshop for xxxhdpi(2960*1440) for a mobile device 'Samsung s8plus'. Once i finished designing I've created an image sized 2960*1440 of my app to look at my design at the S8Plus phone. Than I cut all the icons + made a styleguide for the programmers, etc..
Anyway, the problem that I have is that the developer put all my cuttings and on the app all the cuttings that i made looks smaller than they should look (in a gap of ratio of 1.142)?! For example 56dp pixels of an circle action buttun on the programmed app wont be the 56dp size circle i have made, it looks smaller than it should?! please help me figuring our why, and what should i do?

Implement a carousel in uwp similar to an Iphone Home screen

Am currently working on a uwp project which involves using a carousel that has some sort of grid of pictures that can be swiped by clicking some round navigation buttons. This is also similar to the carousel in Twitter bootstrap. To get a better picture of this, an example is shown below
Rather than different apps on display, different pictures from the user library would be shown. I would like to dynamically display the first 100 pictures from the user's library. I have searched the internet for something similar to this, but the closest I can get is http://blogs.u2u.be/diederik/post/2015/08/23/A-CoverFlow-control-for-the-Universal-Windows-Platform.aspx.
How can I achieve this?
Have you taken a look at the FlipView class?
https://msdn.microsoft.com/library/windows/apps/br242678
Or the CaouselPanel class?
https://msdn.microsoft.com/library/windows/apps/hh967950
and implemented them with a different data template (perhaps a styled gridview) instead of strictly images?
This is the flipview page from the windows dev center:
https://msdn.microsoft.com/windows/uwp/controls-and-patterns/flipview
It should explain the basics of how the itemcontrol works.
Have a look at FlipView. I hope that is what you are looking for.

How to allow the user to zoom and rotate 3D objects in Opengl and Visual C++

I am new to opengl and visual c++. I have done a sample application which rotates 3D shapes in opengl. I want to allow the user to rotate and zoom the object. Please give me an example of how to do this.
I have tried NeHe tutorial: http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=48
I can't understand the class structure in the example. Is there anysimple way to achieve this?
I have found a library as well: http://www.nigels.com/glt/gltzpr/
But still can't figure out how to do this.
Please help me.
Zooming is usually done through gluLookAt. The third parameter is the view distance.
Here is some basic example running this :
http://graphics.stanford.edu/courses/cs248-01/OpenGLHelpSession/code_example.html
Look in display() to see how the viewing distance is used and in MouseMotion() to see how the value is modified and the painting updated.

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