Hello Thierry,
If you are trying to get fields with odd shapes – and have a hard line distinction between ground textures, I’m not sure it’s possible to do.
Ground textures are never hard edged at any angle in Surveyor.
However, there is a way to create the illusion of what I think you might be trying to achieve. It's not too frame greedy either. Use ground textures and a
small number of splines.
If I am building a non-prototypical route, I lay the different ground textures fairly randomly, and then let the border between the two decide where to place a wall, hedge, or road spline. You can get quite realistic fields that way.
It’s also quite effective to give a quick (very quick!) squirt of a darker colour in the corners of fields. I often use track ballast.
I don’t use crop splines in the background. They aren’t really needed for distant landscapes.
Again to save frame speed, don’t paint anything you won’t see. Leave the checker board visible.
Making the terrain undulated helps with the effect as well. Truly flat land is quite rare.
Here’s an example, using very few ground textures and just three spline types. This might better explain what I'm trying to say.
It is sometimes nice to use a crop spline in small amounts, particularly for trackside camera shots. Here’s one which exploits the detailed corn in the foreground (I think it's corn!), laid over the same yellow ground texture used in the fields in the distant background. What you see through the bridge is as built in the top picture.
Cheers
Casper
