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little projection mapping tool
C++ Pure Data C
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LPMT - Little Projection-Mapping Tool

(C) 2011, HVA - Hermanitos Verdes Architetti / Modena, Italy

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LPMT is a little projection-mapping tool for use in our office, it is developed in C++ using OpenFrameworks. It’s based on simple quad warping paradigm, and, though rather simple, can be used to achieve complex and professional projection-mapping sets.

This is the up-to-date version of lpmt, based on OpenFrameworks 007


At the moment LPMT is only available as source code, and we've only tested it on linux systems but thanks to the multi-platform nature of OpenFrameworks it should work out-of-the-box on Windows and OsX too.

up-to-date code (git repository):

for the github fans, the repository is mirrored here:

if you don't like git, you can find a rarely updated zip file:


  • up to 36 independent layers (remember you can use a solid black quad even as a mask)
  • possible content: solid color, images, video, live-cam, slideshows, smoothly changing solid colors, and more ...
  • independent opacity setting for each content element
  • customizable green-screen (chromakey) for video and live-cam sources
  • horizontal and vertical flipping for image, video and live-cam content
  • customizable colorization for each content element
  • customizable video speed and volume
  • save/load project set to/from xml file
  • syncronized start for video elements
  • vertex snap function for adjacent quads
  • cam snapshot background for rough positioning of quads
  • customizable speed for slideshows and color transitions
  • synced multi-projectors shows
  • control and setup through a rich set of OSC messages


’s' – saves settings to xml (projection_settings.xml in data folder) ‘l’ – loads settings from xml file

‘a’ – adds new quad ‘>’ – go to next quad ‘<’ – go to previous quad '+' - raise active quad position in layers pile '-' - lower active quad position in layers pile ‘z’ – selects first gui page for active quad settings ‘x’ – selects second gui page for active quad settings ‘c’ – selects gui page for active quad corner position fine-tuning ‘q’ – fills window with active quad ‘1’ – shows general settings page of gui

‘g’ – toggles gui (for quad warping with mouse gui must be switched off) ‘f’ – toggles fullscreen mode ‘w’ – toggles cam snapshot window background

‘spacebar’ – toggles projection/setup modes ‘r’ – resyncs all videos and slideshows in all quads to starting point ‘p’ – starts projection ‘o’ – stops projection

‘m’ – connects to a MostPixelsEver sync server


  • quad masking (needs some OpenGL-fu)
  • a timeline (?)
  • grid warping
  • edge feathering for multi-projector shows
  • overlay modes for quads


you can contact us at: francesco[at]

this README was last edited by hv_francesco on Wed Feb 23, 2011 19:54 GMT+1, edited 1 times in total.

HVA - hermanitos verdes architetti modena - italy

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