User:Sylvain: Difference between revisions

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=== crontab on MacOS ===
==Redesign of VTK==
* Example
The next version of VTK will support OpenGL 2.0 and GPU Filters.
crontab -e
The illustration below shows the new Rendering Pipeline of VTK.
00 20 * * * ctest -S myScript.cmake > myScript.log 2>&1


* Problem:
[[Image:ShaderDeviceAdapter.png]]
When I create a cronjob with
crontab -e
I get the error message:
crontab: temp file must be edited in place


* Solution:
==Streamline Visualization on the GPU==
Use the 'nobackup' option in VI:
Lines are converted to Triangle Strips on the CPU.
:set nobackup
Then the Vertex Shader orients the triangle strips to face the camera.
:set nowritebackup
Finally the Fragment Shader colors the pixels based on the reflection equation on a cylinder.
crontab: installing new crontab
The resulting image can be textured with arrows, text, or numbers to convey additional information.


=== Install X11 on MacOS ===
[[Image:TubePainter.png]]
To install ParaView-2.4.4, you need to install X11.
* Insert 'Mac OS X Install Disc 1'
* Scroll down to 'Optional Installs'
* Click 'Continue', 'Continue', 'Accept'
* Select 'Applications', click on the arrow in front of Applications
* Select 'X11'
* Click 'Upgrade', enter your password, click 'Ok'


=== Setup CMake for ICC ===
==Streamlines with a cylinder reflection model==
To configure a project to use the Intel compiler icc,
The Vertex Shader orients the triangle strips toward the camera.
set CC and CXX *before* you run cmake.
The FragmentShader applies a cylinder reflection model to give this tube appearance.
Type is the terminal:
[[Image:TestTubeActorStreamLines.png]]


  CFLAGS= CXXFLAGS=
==Streamlines with arrows==
  CC=/opt/intel_cc_81/bin/icc
The Fragment Shader creates a triangle and orients it based on the value of a vertex attribute.
  CXX=/opt/intel_cc_81/bin/icpc


Then run cmake or ccmake.
[[Image:TestArrowTubeActor.png]]


=== Headers for Cross-platform Projects ===
==Streamlines with RGBA texture==
The Fragment Shader applies a texture on the streamlines to visualize additional information.


  #include <stdio.h>  // for sscanf
[[Image:TestTextureTubeActor.png]]


=== Install Qt OpenSource for VCExpress (VS2005) ===
==Streamlines with numbers==
* Install VCExpress AND Platform SDK
Note that the numbers are oriented correctly on the Vertex Shader. The text always faces the camera even during rotations.
http://msdn.microsoft.com/vstudio/express/visualc/download/
* Using Windows Unzip, extract qt-win-opensource-src-4.2.2.zip and acs-4.2.2-patch1.zip to c:/qt/qt-win-opensource-src-4.2.2
http://www.paraview.org/Wiki/Obtaining_GPL'ed_Qt_for_Windows
* Edit C:\Program Files\Microsoft Visual Studio 8\Common7\Tools\vsvars32.bat
* Add path to Platform SDK bin, include and lib:
  C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Bin
  C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Include
  C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Lib
* Launch Cygwin.exe, and apply the following patch
  patch -p1 -i qtwin_patch\msvc_bcc32_42.patch
* Launch Start > All Programs > Visual C++ Express Edition > Visual Studio Tools > Visual Studio 2005 Command Prompt
* cd ..; cd qt; cd qt-win-opensource-src-4.2.2
* Configure Qt and answer yes to all questions
qconfigure.bat msvc2005
* Configure ParaView3 using CMake; Compile using MSVC2005


===Install Qt OpenSource for Mac===
[[Image:TestCellIdAnimation.gif]]
* Build for Debug
cp -r qt-mac-opensource-4.2.2 ~/qt-4.2.2-debug
cd ~/qt-4.2.2-debug
./configure -debug -prefix /usr/local/qt-4.2.2-debug
yes
make
sudo make install
* Build for Release
cp -r qt-mac-opensource-4.2.2 ~/qt-4.2.2-release
cd ~/qt-4.2.2-release
./configure -prefix /usr/local/qt-4.2.2-release
yes
make
sudo make install


===Change shell in Debian===
Close up on the texture of the streamlines.
* Type:
  chsh
* Type your password
* Logout and login again.
* Set up the .zshrc file.


===Associate hostname with IP address for SSH===
[[Image:TestCellIdTubeActor1.png]]
* Dynamic way:
Add in /etc/dhcp3/dhclient.conf
  send host-name "<your_host_name>";
* Static way: (not as good)
Add IP address and hostname in /etc/hosts (Linux) or
C:/WINDOWS/system32/drivers/etc/hosts (Cygwin):
      102.54.94.97    rhino.acme.com          # source server
      38.25.63.10    x.acme.com              # x client host
* On Debian, install openssh-server


===SSH without password===
==Streamlines with a varying radius==
Add to .ssh/config   
  Host <remote_host_name>
    User <your_user_name_on_remote_host>
===Debian Setup===
Check http://wiki.debian.org/
boot: expert
Primary network interface: eth0: ADMtek NC100 Network Everywhere Fast Ethernet 10/100
DHCP
single partition
Install the kernel linux-image-2.6-686
Debian mirror: France - fr.debian.org
Use non-free software
Choose software to install:
Desktop environment
Web server
SQL server (forgot to do that one!)
Standard system


===BuGLe setup on Debian===
[[Image:TestStreamLinesVaryingRadius.png]]
* Install NVIDIA drivers: http://wiki.debian.org/NvidiaGraphicsDrivers
* Install packages libgtkglext1-dev and nvidia-glx-dev
mkdir ~/.bugle
cp ~/bugle-0.0.20070217/doc/examples/filters ~/.bugle
 
Run bugle:
BUGLE_CHAIN=trace LD_PRELOAD=/usr/local/lib/libbugle.so glxgears
Look at /tmp/bugle.log
 
Debugger from command line and debugger with GUI:
gldb glxgears
gldb-gui glxgears
 
===VI setup===
Install package vi-gtk
Edit your ~/.vimrc
colorscheme torte
Create a plugin directory if it does not exist:
mkdir ~/.vim
mkdir ~/.vim/plugin
Download the a.vim into the plugin directory
http://www.vim.org/scripts/script.php?script_id=31
Restart gvim.
 
===VI Convert tabs to spaces (copied from http://www.gammon.com.au/smaug/vi.htm)===
Type a VI command using ':set'
Set tabs to every 2 characters  :set ts=2
Convert tabs to spaces in future :set et
Do not expand tabs                 :set noet
Fix existing tabs (convert to spaces) :%retab
Show tabs visually, and end-of-lines :set list
Do not show tabs and end-of-lines :set nolist
Or add those commands to your ~/.vimrc
set textwidth=78  "wrap lines longer than this length
set tabstop=2    "tabs stops every 2 characters
set shiftwidth=2  "size of a tab
set expandtab    "tabs to spaces
 
===Building CMake on Debian===
Install curses
apt-get install curses5-dev
 
===Debian package for dos2unix===
apt-get install tofrodos
 
===Build VTK for Release===
To create an executable that contains all the libraries,
so you don't need to ship the dlls with it:
CMake options:
Build Static
Replace /MD with /MT
VC Express options:
Build Release
 
===Mount on Linux using Samba===
1. Create mount points .
mkdir /mnt/nas2 /mnt/ruwenda /mnt/nas3
 
2.
add the following lines to your /etc/fstab file :
//kitwarenas2/Share /mnt/nas2    smbfs  defaults,guest,rw    0      0
//ruwenda/E        /mnt/ruwenda smbfs  defaults,guest,rw    0      0
//kitwarenas3:/Share /mnt/nas3 nfs    rw,user,exec,noauto        0      0
 
3. Mount each of them as
mount /mnt/nas2
 
===Restore Wiki page===
History > Compare versions > Undo > Save page
 
===Build VTK with Offscreen Rendering===
OSMesa (Off Screen Mesa) is a library that does rendering and does not need a graphics context.
You can use it on a server that does not have a graphics card or any graphics capability.
To use VTK with OffScreen Rendering on Linux, you need to compile VTK with the OSMesa option on.
Configure VTK using CMake.
Hit 't' for Advanced Options
Turn VTK_OPENGL_HAS_OSMESA ON
Hit 'c' to configure again.
Set path to include dir and library:
OSMESA_INCLUDE_DIR
OSMESA_LIBRARY
Turn VTK_USE_OFFSCREEN ON if you want offscreen by default.
In your application, you can turn RenderWindow->OffScreenRenderingOn/Off to either use OpenGL or OSMesa.
In VTK 6, use test LoadOpenGLExtensions to get info about OpenGL libraries used by your VTK build.

Latest revision as of 23:21, 31 August 2007

Redesign of VTK

The next version of VTK will support OpenGL 2.0 and GPU Filters. The illustration below shows the new Rendering Pipeline of VTK.

Error creating thumbnail: Unable to save thumbnail to destination

Streamline Visualization on the GPU

Lines are converted to Triangle Strips on the CPU. Then the Vertex Shader orients the triangle strips to face the camera. Finally the Fragment Shader colors the pixels based on the reflection equation on a cylinder. The resulting image can be textured with arrows, text, or numbers to convey additional information.

Error creating thumbnail: Unable to save thumbnail to destination

Streamlines with a cylinder reflection model

The Vertex Shader orients the triangle strips toward the camera. The FragmentShader applies a cylinder reflection model to give this tube appearance.

Error creating thumbnail: Unable to save thumbnail to destination

Streamlines with arrows

The Fragment Shader creates a triangle and orients it based on the value of a vertex attribute.

Error creating thumbnail: Unable to save thumbnail to destination

Streamlines with RGBA texture

The Fragment Shader applies a texture on the streamlines to visualize additional information.

Error creating thumbnail: Unable to save thumbnail to destination

Streamlines with numbers

Note that the numbers are oriented correctly on the Vertex Shader. The text always faces the camera even during rotations.

Error creating thumbnail: Unable to save thumbnail to destination

Close up on the texture of the streamlines.

Error creating thumbnail: Unable to save thumbnail to destination

Streamlines with a varying radius

Error creating thumbnail: Unable to save thumbnail to destination
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