java-q | Q interfacing with Java

Note that sorting triangles is bound to have a huge performance hit and if it isn't needed (e.g. due to transparency) engines normally rely on the z-buffer and accept the overdraw.

In general 100k rendered triangles is a lot for a pure software rendering engine. So instead of trying to speed up your sort you might want to try and reduce the number of rendered triangles:

• calculate a potentially visible set (pvs) of triangles that are within the camera's view frustum
• try to use more sophisticated pvs mechanisms to cull objects behind walls etc.
• try to reduce the size of the view frustum if possible (don't render too close or too distant objects)
• try to use level of detail rendering (LOD), i.e. use lower resolutions for distant models and maybe even just billboards for the most distant
• use backface culling to remove invisible triangles before sorting your triangles

Also note that you might not have to sort all triangles each frame. If the camera or other objects don't move too fast or pop into or out of existence you could try to reuse the already sorted triangle list for a couple of frames - or you could try to sort only a portion of the elements.

Additionally you could try not to sort by average z but use min/max z for the triangle, i.e. the vertices. Calculating average z has a performance hit as well

You are storing the credentials.json file in the main app folder but, as you can see in the corresponding Java Quickstart for Sheets API, this file should be in src/main/resources/.

Your issue should be solved by moving the file to the specified location.

It all boils down to your mapping. If your field is mapped as a 'straightforward' keyword like so

I see a lot of comments here (all valid) but the question you're asking is why the canvas is showing something like ~ 370 instead of 400 on the right hand side (if I read this correctly).

Your canvas is probably x,y(400,400) but the parent container is only 400px wide based on your initial call. There's a good chance your window border and other operating system specific elements are adding quite a few pixels (on Windows Vista/7 I seem to remember this was ~30px) so there's a really good chance that's the problem.

As a side note (having written some particle simulations in Java/Processing) I can say you might want to look at the OpenGL style of positioning using floats from -1.0f/1.0f representing your canvas rather than trying to do everything in integers. First, you're going to have a lot of choppy "bounces" working with integers as you're going to want to represent values between pixels. Secondly, this makes resizing your simulation to an arbitrary x/y width very easy.

https://learnopengl.com/Getting-started/Coordinate-Systems

Good luck with it, I stopped writing GUIs in Java five or six years ago so I'm a bit rusty. Null layouts can be problematic, I would recommend picking a layout manager and using setPreferredSize (GridBag was my favorite).

There is a concept named refresh token and it seems like it suits to your needs.

You can find well discribe in this question: https://stackoverflow.com/a/7209263/4988996

Edit: According to your comment I found that google has DataStoreCredentialRefreshListener

Access protected resources using the Credential. Expired access tokens are automatically refreshed using the refresh token, if applicable. Make sure to use DataStoreCredentialRefreshListener and set it for the credential using Credential.Builder.addRefreshListener(CredentialRefreshListener).

Checkout: https://developers.google.com/api-client-library/java/google-oauth-java-client/oauth2

This syntax was implemented in Java 1.7. Heroku thinks that you are writing java 1.5 code. Can you change the project settings so that it understands that you are using (at least) Java 1.7?

Bytecode != Java source code.

What is actually in the classfile is just random bytes. What you are seeing is javap's textual representation of the bytecode, which is designed to be familiar to Java programmers who don't know much about bytecode, and hence uses Java like syntax where possible. But it is not and is not meant to be actual Java source code.

If you used a different disassembler such as Krakatau, the output would look very different, but it would still be a representation of the same binary classfile.

You are correct, since you are using a service account the file created by it is only accessible to that account. As stated in this tutorial about service account:

Using a service account to access Google Drive API can be very useful but it is important to remember that a service account is not you. If you want to be able to access the files it uploads you must grant yourself access to them though the service account.

To add your self a permission to the file:

1. Use Drive API
2. use Permissions: update or Permissions: create

I suggest that you create the sheets using Drive API to add permission in the sheet creation. Then use Sheets API to edit the content.

Hope this helps.

If your array is bars then Kotlin allows you to do