The Campaign screen is a .mdx, which is a model file. Therefore through modelling you can create a .mdx file and then import it into the campaign file and assign as described by APproject.
The loading screen .mdx is also a model but the texture of the loading screen is applied as a texture to this file. There are tutorials and I even came across a program that can script certain panning, zooming etc. to make the loading screen move.
HuanAk said:
It is too hard to modified CAMPAING SCREEN or loading screen's ".mdx", next to impossible
I think that is quite an over-statement!
The WarCraft III Campaigns which were created by the developer Blizzard, have the Campaign screens' .mdx files in the Warcraft .mpq files.
No requirement to Email people who have created custom campaign loading screens, and ask them how they have done so. It is just that, creating beautiful and highly detailed campaign screens is something that many people don't have enough time, or are just not up to the task -that is why these custom models are so rare in custom campaigns.
If your thinking a custom .mdx is hard, reality is it is quite the opposite:
Highly Detailed Model + Primary Camera within Model => The game will pick up the camera, like in custom models which are used for the portrait view of a character. Done.
~Armix