Originated from lylejk and described by rich2005


download script here --> Fill Selection With Perspective Brush Script for GIMP.

just a play



if Lyle "accepts" your way, there is room for interesting enhancements, Tin:

- select all if none
- defining initial brush size
- defining x starting point
- ...

Lyle, how do you see it?

It's still a cool script, regardless. Haha! Thanks, Tin!

Thanx for sharing.

- select all if none, i could add.
- defining initial brush size, it uses whatever the active brush size is set to, and by specifying horizon percentage you're controlling how narrow your far away brushes should look, then i use this percentage to decide brush size for brushes near horizon starting y. I don't see the point to defining intial brush size.
- defining x starting point? what's that? right now it's just based on your selection x1. what other x can there be if you specify x starting point?

Tin, I was too concise, so it's not clear what I mean:
- initial brush size: the filter takes the "defined" brush size of the active brush, it could be useful let the filter have a parameter which allows to change it before taking that value as initial value, without defining another brush size
- by x starting point I mean the possibility to create a perspective which has a specific "punto di fuga" ( I don't know how to translate it); if you see my play the "punto di fuga" is at centre and not at x0 as created by default by the filter, I had to duplicate the layer, reverse it and merge to get it.
That's all.

edit: likely the term in English is "vanishing point"

example of a field with flowers having a vanishing point not at x0

The vanishing point is only used if you have a roadway or a hallway or something that leads to a point.
Because this is perspective based on any selected area. the vanish points are along all the x's
as an example here you can see (I used 1 as percentage for horizon) it looks like everything is vanishing to the horizon.


EDIT: I think i know what you mean, you want the user to be able to control the loop's x where things start out aligned. I'll update soon another version soon.

Version 2 is up.
Select All if none is selected.
Added option to specify Vanishing X at percentage (of selection) (default at 50 percent, center of selection).

thanks a lot Tin

Thank you for suggesting improvements.

another play with version 2 (with peppers.

version 3 is up.
Allow "RANDOM" placement in addition to "ALIGNED" placement.

Wow, maybe you are ready to add also a "random" angle (with moderate variations....) to get trees leaning slightly to the right and to the left....

Freaking awesome, Tran. Have to leave for work, soon, but I will be playing with your genius of a result soon. Thanks a heap.

Nice additions to the brush Tran. I would really like to be able to control it with a path though.
Say like every node place a brush the more -Y the smaller the brush
Settings


This took 7 minutes to render (1000x1000 pixels)



Very cool results though.

By the way the brush itself has transparency that is not your filter doing that.

path coming up soon, now i gotta look around and see what i can do.

It's up, give it a run and let me know if that's what you want.

http://gimpchat.com/viewtopic.php?f=9&t=14849&p=206023#p206023

Pepperoni in perspective. lol

Again, thanks a heap, Tran.

Alphabet's perspective


Used liquid rescale to squeeze the characters even closer together. Not sure how to pack brush output better, but LqR does a reasonable job doing this.