CSE564 - Spring 1999

Assignment 3

Due: April 6, 1999, 11 am

In this assignement you will learn how to use VTK.

part 1

In this part you will develop the familiarity with VTK , learn how to compile and run VTK applications

Below is a step-by-step example of how to compile and run a VTK application at Tansaction Lab

1. Some important paths:

Vtk2.0 is installed at : f : \vtk20
VC++ 4.0 is at: f : \MSDEV

2. Visual C++ 4.0 can be run from the menu:

Start->Utils ->programming->Visual C++ 4.0
If there is no Utils menu , you can run : F:\MSDEV\BIN\MSDEV (use explore)

3. After entering your account, you can copy the following example source code into your account:

f: \vtk20\vtk\graphics\examplesCxx\VisQuad.cxx

         4. Run Visual C++ 4.0 . Open your source file :
                               H:/cse564/cse564_*/VisQuad.cxx
              from the "file " menu. The under "Build " menu , select "build VisQuad.exe ". In
               the following pop up window press "Yes " ( It will create workspace for your project ).

5. Set path for include file and library:

               Under " tools " , select "options ", select "Directories" .
               Under the "show directories for :" select "include files ".
               Then add

                       f:\MSDEV\INCLUDE
                       f:\vtk20\common
                       f:\vtk20\graphics

Under the "show directories for :" select "library files ". Then add :

f:\MSDEV\LIB

6. Go to "Build " , select "Setting ". then select "link" tab. In the "Object/Library modules " catagory add:

vtkdll.lib

7 . Go to "Build ", select "Build VisQuad.exe "
This time everything should be OK

8. Go to "Build", select "Execute cone3.exe "

Some contouring surface of quadric function should appear in your screen.

9. Check out the interactive commands : left mouse button to rotate, "w" to wireframe, "e" to quit the program

Now try to answer following questiones :

Which function calls change the quadrics coefficients, the isovalues, and number of isosurfaces to be displayed ?
Find two more interactive commands of VTK

Part2

Modify VisQuad.cxx. Use SetUserMethod to define a user function to be activated by typing ``u'' during the
interactive process. Call SetUserMethod using iren pointer.

     Define the user function in a way that the quadric parameters and the isovalue can be changed into this function. In
     this function define a menu (using printf) that enables commands to be entered by the user (using scanf). The
     commands should allow changing all the 10 quadric coefficients , the number of isosurface and the isovalues. They
     should also show the old value before changing.

     Special attention should be taken to pass the parameters to the user function. By convention the only parameter
     allowed is a ``void'' pointer. A convenient way to solve this problem is grouping all needed pointers and data into a
     ``struct'' and pass a pointer to this structure.

Part3

You are asked to write a VTK application which uses VtkContourFilter to extract the isosurface from a high
potiential iron protein molecule.

The dataset is at : f: \VolVis\VolVis.2.1\data\SLC\tran\neghip.slc

The dataset can be loaded into VTK pipeline by VtkSLCReader.

Compile and run your code. You should get something like Plate 15 of the Textbook (P.277)

Submission Requirement :

You should submit a source code and an exexutable file for every part :

                 part 1 :    VisQuad.cxx    VisQuad.exe     Answer.txt ( for two questiones )
                 part 2 :    UserMethod.cxx UserMethod.exe
                 part 3 :    Contour.cxx     Contour.exe

On-line Manual of VTK

There is a nice on-line man page of VTK :

http://bulky.aecom.yu.edu/vtk/atoz.html

The home page of VTK is at :

http://www.kitware.com/vtk.html