7.8 KiB
This fork is made to integrate some important functions into PiMapper (RPi/Arm version only).
1. Slide show function (play all images from a folder)
This should be selectable as an additional FBO source in PiMapper, looping all images in the /media/internal/images/* folder Would be cool to adjust the speed with a simple flag, simple opacity transition welcome, but not necessary. Refresh state, so it checks if there are new images added during playback and play them as well. make all images fullscreen. (if its not possible to handle various sizes as one, i will make an imagemagick script to convert all to 1920x1080)
2. Play all videos from a folder
This should be a an additional FBO source in PiMapper, looping all videos in /media/internal/video/*
3. Circular shapes for mapping (there are only square and tringle shapes so far)
Circualr mapping shape (if possible with movable center distorsion)
4. Grid Warp (meshing of square shapes)
check out this http://www.hv-a.com/lpmt/sssm.pdf on page: 10 https://forum.openframeworks.cc/t/grid-mesh-warping/12883
5. SoftEdge
Image overlay to making adges transparent, could be achieved with overlaing a png with a black gradient.
This will be an opensource project and freely available for everyone. Targeting OF_0.9.x on RaspberryPi. Each function will be rewarded to the coder from a pot sponsered by pocketvj.com.
The keybindings will be changed to ones matching to PocketVJ CP and there will be an audio branch added.
ofxPiMapper
Projection mapping addon for openFrameworks that runs on the Raspberry Pi.
The project started as master's thesis project by Krisjanis Rijnieks at the Helsinki Media Lab. Currently undergoing changes. Expect the API to be incompatible with your projects from the past or present-day.
Running the Example
You can use the example application of the addon for projection mapping projects where static images or videos have to be projection mapped. Make sure you are using the latest stable version of openFrameworks.
-
Put your own sources in the
example/bin/data/sourcesdirectory. Use Handbrake with the Fast 720p30 preset to encode your videos. -
Compile and run the example project.
cd openFrameworks/addons/ofxPiMapper/example make && ./bin/example -
Use the
-fflag to launch it fullscreen../bin/example -f
Compiling on Linux
There might be issues with compiling because ofxOMXPlayer and ofxRPiCameraVideoGrabber addons do not exist on Linux and also other non-RPi platforms. To avoid the issues, do the following.
- Open
example/addons.makeand remove ofxOMXPlayer line. - Open
example-camera/addons.makeand remove ofxRPiCameraVideoGrabber line. - Compile one or both examples by using make.
Problems with Audio
If you are having problems with audio playback, here are two steps for you. Before you do these, make sure audio of your video file works.
Step 1
Open example openFrameworks application ofApp.cpp file in a text editor.
cd /home/pi/openFrameworks/addons/ofxPiMapper/example
nano src/ofApp.cpp
Make sure that the following line looks as follows.
ofx::piMapper::VideoSource::enableAudio = true;
Save the file (CTRL + X, Y and ENTER). Recompile and run the example.
make && make run
Step 2
If the sound still does not work, try to use raspi-config.
sudo raspi-config
Select "7 Advanced Options" and "A9 Audio" then "0 Auto". You can use one of the force options if you want to be 100% sure.
Open alsamixer.
alsamixer
Set the volume to a value between 90 to 100 by using the arrow keys. ESC to exit the mixer.
Launch ofxPiMapper example, select a surface and set a video source with audio. Should work.
Development
Keeping it simple. Developing ofxPiMapper master branch against the latest stable release version of openFrameworks.
Licence
ofxPiMapper is distributed under the MIT License. See the LICENSE file for further details. Just add my name somewhere along your project Krisjanis Rijnieks whenever possible. And join my workshops.
Dependencies
Before moving on, make sure that you have all the dependencies installed.
- ofxGui (available in oF by default)
- ofxXmlSettings (available in oF by default)
- ofxOMXPlayer (needed only on Raspberry Pi)
To install dependencies, cd into openFrameworks/addons directory and execute the following:
git clone https://github.com/jvcleave/ofxOMXPlayer.git
The ofxOMXPlayer addon recommends you to use its releases. Currently the latest release is 0.9.0-compatible. To checkout the code of the relase, go to the ofxOMXPlayer addon directory and checkout the relase.
cd openFrameworks/addons/ofxOMXPlayer
git checkout 0.9.0-compatible
You can check the latest releases on the ofxOMXPlayer GitHub repository.
Usage
Currently a keyboard and a mouse has to be used in order to do the mapping with ofxPiMapper.
Modes
PiMapper has 4 modes:
- Presentation mode
- Texture mapping mode
- Surface editing mode
- Source assignment mode
You can access these modes by pressing 1, 2, 3 or 4 respectively.
Presentation mode
This mode is activated once the application starts up. It does not show anything else except the final projection mapping as it was saved previously.
Texture mapping mode
In this mode you can adjust the texture coordinates of the surface you have selected in the surface editing mode.
Surface editing mode
Here you can select, move and distort the surfaces you have created.
Source assignment mode
After you select a surface in surface editing mode, activate this mode to be able to choose a source for the surface. Afterwards you might want to go to the texture mapping mode to adjust texture coordinates.
Other shortcuts
These other shortcuts that you can use while using the example app.
| Key | Function |
|---|---|
| 1 | Presentation mode |
| 2 | Texture editing mode |
| 3 | Projection mapping mode, use this to select a surface first |
| 4 | Source selection mode |
| c | Show info |
| t | Add triangle surface |
| q | Add quad surface |
| x | Add quad surface |
| g | Add grid warp surface |
| a | duplicate selected surface |
- | Scale surface up
- | Scale surface down p | toggle perspective warping (quad surfaces only) v | add columns to grid surface (grid warp surfaces only) b | remove columns from grid surface (grid warp surfaces only) n | add rows to grid surface (grid warp surfaces only) m | remove rows from grid surface (grid warp surfaces only) . | select next surface (projection mapping mode only) , | select previous surface (projection mapping mode only) k | select next vertex l | select previous vertex h | Move selected surface one layer up j | Move selected surface one layer down s | Save composition y | Hide/show layer panel z | Undo rbt | Reboot (Raspberry Pi only) sdn | Shutdown (Raspberry Pi only) new | Clear composition (remove all surfaces) ext | Exit application and return to command line d | Delete surface. w | Toggle pause for video sources (texture and projection mapping modes) 5 | Select next source (no need to use the source selection interface) 8 | Move selection Up 9 | Move selection Down 7 | Move selection Left 0 | Move selection Right If no surface is selected in the projection mapping mode, all surfaces are moved.
Dont know if this works already:
/ | Toggle 1px/10px steps for keyboard moves on Raspberry Pi