vistit the homepage Vienna University of TechnologyTECHNISCHE UNIVERSITÄT WIEN
Institut für Computergraphik und Algorithmen
Abteilung für Computergraphik

Overview

Introduction

This application has been developed in the course of the Visualisierung LU during winter term 2007/2008.
It enables you to visualize 2D flow data

Screenshots

Graphical User Interface (Overview)

The main window basically consists of up to 3 panels:

  • rendering panel: here you can see the result of the visualisation
  • control panel: allows you to load datasets, define the type of rendering, etc.
  • transfer function panel: used for creating a transfer function

Load/Save
  • Load Dataset: allows you to load a datasets of type DAT
  • Save Image: save an image to a file (JPEG)
    • Resolution: 320 up to 2048 pixel (horizontal)

Rendering (Arrow)

  • Length As...: the length of the arrows should be represented by the select property
  • Color As...: the color of the arrows should be represented by the select property
  • Distance: distance between the arrows

Rendering (Background)
  • Color As...: the color of the skalar values (pixels) should be represented by the select property

Rendering (Combined)
  • a combination of the activated rendering modes

Transfer Function

In rendering modes Arrow, Background and Streamline you have the possibility to define a transfer function wich is used for mapping the data value to color and associated opacity values.
It is also possible to load or save a transfer function in these modes by using the buttons Load... and Save...
Additionally the minimum and maximum values of the selected property are displayed.

  • By clicking with the left mouse button into the area of the transfer function you create a point at this position
  • By using the "drag & drop" method you can change the position of the the point. Simply click on a point, hold the mouse button pressed and then move the mouse. When you release the button again the point is set at the new location.
  • Double clicking onto a point opens a window where you can define its color.
  • Clicking with the right mouse button onto a point removes it from the transfer function and its neighbour points are connected with each other.