Vanishing Point Tool

[v.veidt]

I've made this brush to serve as a vanishing point tool for creating perspective grids. It's a fairly simple set of radiating lines, which is scalable and can be modified by the Tint brushes in the Sketch Panel. I hope you find it useful.

Spoiler : :

vp1.png

vp3.png

vanishingpoint.tvpx

This file was made in TVP 9.5 Standard if it matters.

[Elodie]

Thank you for sharing

[Animark]

Great! Thumbs up!

... and thanks a lot

[lemec]

This is a rather heavily modified version of KylerK's vanishing point tool.

Spoiler : Kyler's tutorial video :

This version automatically switches you to the propelling pencil and restores your brush afterwards.
It makes use of the tv_undoOpenStack and tv_undoCloseStack commands to avoid clobbering your undo buffer
It locks/unlocks the display during operation for faster results.
It also uses tv_zLine to fade the opacity at the center point to eliminate the "fuzzy navel" artifact at the vanishing point

vp0.png

Code: Select all

Param Circle

Parse result command Cx Cy r button

tv_getActiveTool
oldTool = Result

if r>800
   t=800
Else
   t=r
End

tv_projectInfo
parse Result name width height extra

maxLen = sqr(width*width + height*height)

tv_propelling mode "color" power 100 opacity 100 dry 0 aaliasing 1 gradient 0 cpower "10;2 0 1 0 0 1 1 "
tv_undoOpenStack
tv_lockDisplay
FOR i = 1 TO t
   angle = i * (360 / t)
   x1=COS(angle) * maxLen
   y1=SIN(angle) * maxLen

   tv_ZLine Cx Cy x1+Cx y1+Cy button 0 255
END
tv_UnLockDisplay
tv_cmd oldTool
tv_undoCloseStack "Perspective Guide"


This one is a little different in that it randomizes the angle and the distance to the center point. It doesn't affect the current tool, so it's useful for various zooming effects.

vp1.png

Code: Select all

Param Circle

Parse result command Cx Cy r button

tv_projectInfo
parse Result name width height extra
maxLen = sqr(width*width + height*height)

r = 800 * (r / (maxLen / 3))

if r>800
   t=800
Else
   t=r
End

tv_undoopenstack
tv_LockDisplay
FOR i = 1 TO t
   r1 = rnd(maxLen / 2)
   o2 = 255 * (1 - (r1 / (maxLen / 2)))
   angle = rnd(3600)
   x2=COS(angle/10)
   y2=SIN(angle/10)
   x1=x2 * maxLen
   y1=y2 * maxLen
   x2 = x2 * r1
   y2 = y2 * r1
   
   tv_ZLine x2+Cx y2+Cy x1+Cx y1+Cy button 0 o2
END
tv_UnLockDisplay
tv_undoclosestack "Radial Burst"


[lemec]

vPForestTool.png

vPForest.png

[Elodie]

Wow, very nice

[v.veidt]

Wow, thanks for all the work, especially with the "fuzzy navel" issue. I suppose I should really learn to script for TVP.

Not to seem belligerently ignorant, but how does one implement these wonderful scripts?

[lemec]

1: create a new custom panel action (right click an empty spot on an EDITABLE custom panel and choose Add Action)
2: edit the new action (right click it)
3: Choose Embedded Script
4: copy/paste the script of your choice into the script window that comes up.

[v.veidt]

I can't seem to get either of these scripts to work. The Param Circle command is definitely working and I don't get an error message, but there is no result when I use the action. Is there any reason this would not work on Mac OS X?

Update: It works flawlessly on Windows. Now I'm extra glad I switched over. Thanks.

[kariP]

They both seem to work on my mac, very nice, especially the perspective tool!
I adjusted the opacity of the endpoint from 0 to 3. Now it creates a small dot into the horizon, which is a bit clearer for me. And with low amount of lines, no funny stuff on the navel area either. A Big thank you for the script!

[lemec]

Hm. Maybe I should make a version that will set the vanishing point to the intersection of two non-parallel lines. Might be useful for getting perspective guides for imagery that has an existing vanishing point.

[Fabrice]

hey Mark and Vincent Veidt, excellent job, as usual

[Peter Wassink]

Hm. Maybe I should make a version that will set the vanishing point to the intersection of two non-parallel lines. Might be useful for getting perspective guides for imagery that has an existing vanishing point.

you mean a version with an input of four points that would create a grid to match an existing image?
cool idea!

[slowtiger]

+1. That's something so fundamental, yet I haven't seen it in any graphics program yet: let the user create a rectangle or tetragon, and the script would create a grid of that. Adjust the original tetragon, and the grid changes with it.

grid.png

[Fabrice]

Maybe it can help :
The vanishing points are usable in the warp tool.
So if you draw a grid on the screen, you can use the warp tool to put it in perspective, using the vanishing points of the warp tool.

nb : This kind of grid is in the ToDo list for a future 10.x version. with the complete renewal of grid, guides, etc ... (old code ...)