Some of ShiraPlayer users (using with fisheye or spherical mirror) wanted features that will sensitize warping projector output. For this "Fine-Tune distortion tool" is added to ShiraPlayer to gain more true warped output. This feature is also in ShiraPlayer Pro (for multi-projector system) including blend operations. 

"Fine-Tune tool" is based on texture mapping distortion operations.You can find code and information source link of texture warping and mapping below:

http://forum.openframeworks.cc/t/grid-mesh-warping/12883/5
http://www.pling.org.uk/cs/cgv.html
http://paulbourke.net/miscellaneous/lenscorrection/
http://paulbourke.net/dataformats/meshwarp/
http://www.dcs.ed.ac.uk/teaching/cs4/www/graphics/Web/advanced_ogl.pdf (page 9-15)
http://www.it.hiof.no/~borres/j3d/explain/texture/p-texture.html
http://w3.impa.br/~morph/cd-morph/docs/software/warprt.htm

How to use "Fine-Tune Tool"

- Choose Configration checkbox from Fine-Tune distortion groupbox on Configration Window.
- Grids which is required for fine-tune will be displayed on projector window.
- Drag/drop yellow small squares in grid.
- Complete align operation until you gain sensitivity level you want.
- Click save button to save fine-tune settings
- "warpsettings.xml" file is created in ShiraPlayer path.
- ShiraPlayer projector window will be opened with "fine-tune distortion" settings as long as this file exists.
- To cancel fine-tune distortion use delete button. "warpsettings.xml" file will be deleted permanently.
- Click reset button to return to initial state if you want.

- Warnings

: Fine-tune distortions are not saved without clicking save button.
: No recycling for "warpsettings.xml" file if delete button is used.

This feature is published with 1.7.1.0 version.