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TR's FreeWarp V1.9.2 (Jan. 1, 2016)

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TechnoRobbo's FreeWarp v1.9.2


TR’s FreeWarp (short for TechnoRobbo’s Freestyle Warp) was designed for the artist to intuitively reshape an image by stretching it’s detail.


The math employed was a built from the ground up as deliberate departure from Beier-Neely’s Algorithm and the standard mesh warp, Allowing the stretching to be arbitrary.



Version 1.92 adds AutoSave and more internal stuff.

Version 1.91 adds an Opacity adjustment and some internal stuff

Version 1.9 adds a Warp Curvature adjustment and preview

Version 1.8 Fixes Undo

Version 1.7.1 Cursor Scaling Fix.

Version 1.7 warping within selections.

Version 1.6 adds functionality and speed

Version 1.5 Re-invents the user interface

Version 1.2 Puts back missing Label

Version 1.1 Fine Location Control Added


FreeWarp Tutorial

Tutorial Music by TechnoRobbo




Menu: Effects->Distort





Left-Click Key to Warp - Save to Keep Warp



Old Version 1.5



Version 1.1 Video





















How it Works


The Algorithm has 2 distinct parts:

1. Distort the Image

2. Localize Warping

..and 3 distinct parameters.

1. The Origin – where the warp begins

2. The Target – where the warp ends

3. The Minimum Warp Size – the size of the warped area

(If you continue to stretch the image beyond this size the algorithm adjusts this parameter)

Distort the Image

Stretching the image is achieved by dividing the image into parts. The Stretched Side and the Compressed Side. The demarcation point is the Target point. Anything on the Origin side of the Target it stretched from the image border – anything on the opposite side is compressed towards the image border.
In the Source Code this is labeled “//reverse mapping”.

Localizing the Warp

Localizing control of the warp is a simple matter of finding the distance of a pixel to the imaginary line segment created by the Origin Point and the Target Point.
In the Source Code this is the “distance” function.
The distance is normalized by diving it with the Minimum Warp Size. If the distance between Origin and Target (Pythagorean Theorem) exceeds the Minimum Warp Size the distance is used.
Normalizing results (d) is a value between 0 and 1 that is used as the control in a linear interpolation between the Source pixel (uu,vv) and the Target Pixel (x,y).

uu = d * x + uu - uu * d;

vv = d * y + vv - vv * d;

I hope I shed some light on the code for the programmers – I’m sorry if I bored the rest.

The Source Code 




The Plugin


Edited by TechnoRobbo
  • Upvote 8

Go out there and be amazing. Have Fun, TR
Some Pretty Pictures Some Cool Plugins

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Great fun. Thanks for the continued work :)

I started with this on a separate layer



Used Freewarp / Duplicated the result / ran drop shadow and then conditional hue / saturation, played with blend modes, added your scatter effect and got this :)


  • Upvote 3





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Ooh, it's like Kai's Power Goo!  I like!


The Doctor: There was a goblin, or a trickster, or a warrior... A nameless, terrible thing, soaked in the blood of a billion galaxies. The most feared being in all the cosmos. And nothing could stop it, or hold it, or reason with it. One day it would just drop out of the sky and tear down your world.
Amy: But how did it end up in there?
The Doctor: You know fairy tales. A good wizard tricked it.
River Song: I hate good wizards in fairy tales; they always turn out to be him.

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Updated Version 1.1  - adds a Fine Location Control for cursor


David & Nurse- Thank You




Red Ochre -I didn't know Obama was half pixie!  :lol:


Red - He is , I've seen his Birth Certificate



Midora - 

It's not fair. I'm missing the german 'Mutti'.

I think someone already warped her...



Edited by TechnoRobbo

Go out there and be amazing. Have Fun, TR
Some Pretty Pictures Some Cool Plugins

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My Apologies the "Hold Control to Warp" disappeared from last version. I put it back.

(Here's a tip keep holding Control until you save)


I've also added a "How It Works" section to the Original Post to make up for my lack of commentary in the sourcs code.



Edited by TechnoRobbo

Go out there and be amazing. Have Fun, TR
Some Pretty Pictures Some Cool Plugins

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