Support Alpha Stamps

[CsloudX]

Description

Use alpha brush, we can brush montain every easy.

It like need this tasks:

• Let can set brush size to larger (Current can only set less than 200m, for montain, it was too small)
• Let can set brush Opacity to large than 100% (Current can only set less than 100%, This is option, we can click multi-time to make montain higher).
• When mouse pressed , brush once (Current brush when mouse move)
• Can custom brush's rotation

[TokisanGames]

That is called an alpha stamp. This means you provide a 2k-4k height image for a stamp.

The current brushes are already alpha stamps, though very small, 100px or 256px. Even if you did stamp them very large, they'd be ugly and blocky.

Alpha stamps are already partially supported. It's not just these 4 options you need. There are other things needed, notably 2k-4k alpha stamps.

Currently, you can import stamps in any region using the importer. Otherwise your best bet is to work in a photo editing app for now. Then you can place your 2k-4k stamp wherever you like, at any rotation and import that heightmap.

Additionally,
Larger brush size needs #174.

You can set Brush rotation by disabling jitter and enabling align to view in the advanced settings. Paintable UV rotation is planned.

[TokisanGames]

Action on mouse click instead of movement was added some time ago.
Size > 100% added some time ago.
Strength > 100% enabled in 7e75cd4.

You could technically do this now, though it's not as smooth as it could be.

1. Insert higher resolution alpha stamps into the brush directory, no built in tool to manage them
2. Set brush size and strength very high.
3. Align the camera to the angle you want and disable jitter. No specific angle option.
4. Click once.

One of the default low res alpha mask zoomed up, stamped, then smoothed:

This ticket will remain open until it's a smoother process, maybe brush management at least.

[TokisanGames]

#468 Made a huge improvement for alpha stamping that eliminates the need for smoothing if using a small resolution 100x100 stamp at 1024x1024. However, it still needs smoothing if stamping at 2k+. See pics.

For future improvements, we need:

• An alpha stamp mode that will:
  • Upscale the selected brush to 4096x4096
  • Stop hiding the decal (or provide mesh preview)
  • Snap to region?
  • Automatically disable jitter and align to view
  • Stamp rotation
• Provide some interface for managing brushes
• Resize a copy of all textures to only 100x100 for the brush selector. Currently it uses the full brush texture