The 3D model is slow because there are more calculations for 3D.
I am going to simply the EJS upload interface.
User only need to upload ejs_XXX.jar file.
I will add code to extract width,height,and code name from uploaded jar file.
[b]It is working now![/b]
Use jar file as second attachment might not be a good ideas. For the folllowing reasons:
What if you have uploaded other files? (The 2nd file is not a jar file).
what if you want to upload new versions of jar file?
Now, just click the checkbox and upload the ejs jar file.
The php code will unzip the jar file and find out all the necessary information.