addon to smoothly blend multiple projector edges together for installations
C++ C
Latest commit ff5c2c8 Nov 25, 2012 @obviousjim obviousjim Update README.md
added Shader credit

README.md

ofxProjectorBlend

(version 2.0)

This addon is used to take a normal openFrameworks project and split it into 2 or more pieces that can be projected using 2 or more projectors. This usually involves something like a Matrox DualHead or a graphics card with multiple outputs. For the best results, the projectors should also have a hardware blending feature so that the overlapped portions are not brighter than the non-overlapped sections.


Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

Credits

Used in

Examples

Two Screens

This app shows the simplest usage of the addon: a typical 2-screen horizontal layout.

Two Screens

Three Vertical

Three Vertical

Simple Gui

For this example, get to additional addons: ofxMSAInteractiveObject [direct download link] and ofxSimpleGuiToo [direct download link].

Gui Controls

Blend Clown

This example shows a stupid little technique that has come in very handy for me when aligning multiple projectors. The uniform grid isn't ideal for alignment because you might be overlapping too many grid squares. With the clown, you can be sure that you are aligning properly.

The Blend Clown