OLD CODE

Visualizing point clouds using open inventor libraries in Linux.

Linux source code and executable (ShowInvPts)

Run the program as follows:
>>ShowInvPts 0 1 0 <r> <g> <b> <ptx filename1> <ptx filename2> ...
For example: ShowInvPts 0 1 0 1 0 0 small_example.ptx (the point cloud small_example.ptx is displayed with red color).
Data files can be found here.

NEW CODE

Visualizing point clouds using open inventor libraries in Linux

Linux source code
To compile: make ShowInvPts
The executable is named ShowInvPts
You may need to change the path of the Open Inventor (variable INVENTOR_ROOT) libraries in the Makefile.
You will need to change the path EXEC_DIR (directory where executable is placed)
Run as follows:

ShowInvPts <R> <G> <B> <Ptx file>
Example: ShowInvPts 1 0 0 small_example.ptx
(the point cloud small_example.ptx is displayed with red color).

This program opens a second window with two buttons

Pressing the ShowCoordSystem button will display the 3-axis of the coordinate system
Pressing the PrintIvFile will save the inventor scene in the file THE_SCENE.iv

THE_SCENE.iv is placed in the directory from where you run the progam.
You can visualize THE_SCENE.iv with the program ivview (comes with the inventor distribution)

Visualizing point clouds using open inventor libraries in Linux (simpler)

Linux source code
It has the same functionality as the previous visualization code.
The difference is that the second window does not come up.
Read this code first so that you are not confused with the XWindows code embedded in the previous visualization progam.

Picking points from an Inventor Scene

Linux source code
To compile: make SelectPoints
The executable is named SelectPoints
You may need to change the path of the Open Inventor (variable INVENTOR_ROOT) libraries in the Makefile.
You will need to change the path EXEC_DIR (directory where executable is placed)
Run as follows:

SelectPoints <inventor_file>
For example: SelectPoints THE_SCENE.iv

An examiner viewer with the inventor scene will come up.
Select the "arrow icon" in the upper right corner.
Then click on a point in the scene

A blue sphere will appear at the place you clicked
The coordinates of the clicked point will appear on your terminal
You can pick as many points you want