Lecture - Purdue University · Lecture January 16, 2020 3. CS530 / Spring 2020 : Introduction to...

CS530 - Spring 2020

Introduction to Scientific Visualization

LectureJanuary 16, 2020

3

CS530 / Spring 2020 : Introduction to Scientific Visualization. 03. VTK01/16/2020

The Visualization ToolkitOpen source library for

Visualization: Mostly sciviz, some infoviz Computer Graphics Imaging

Written in C++Supports Python (via wrapper)

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OutlineVisualization pipelineInternal data representationExamples

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Object-Oriented DesignOO visualization systemObject models properties of entityState: Attributes (variables) Behavior: Operations (methods)

Inheritance: derive object from anotherAdd properties Overload (specialize) methods Base / derived class (abstract class)

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5


Visualization Pipeline

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Source

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Source

Filter(s)

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Source

Filter(s)

Mapper０ Uif!nbqqfs!dpowfsut!hfpnfusz!up!hsbqijdbm!qsjnjujwft!




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Source

Filter(s)

Mapper

Actor

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Source

Filter(s)

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Actor

Renderer

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Source

Filter(s)

Mapper

Actor

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Render Window

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CS530 / Spring 2020 : Introduction to Scientific Visualization. 03. VTK01/16/2020 13

Filter(s)

Mapper

Actor

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Render Window

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Filter(s)

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Render Window

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VTK pipeline connection syntax:(1) Receiver.SetInputConnection(Supplier.GetOutputPort())

(2) Receiver.SetInputData(Supplier.GetOutput())


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Render Window

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Interactor

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Rendering Pipeline in VTK

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wulBdups


26

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Visualization PipelineImplicit control of execution (lazy evaluation): algorithms are only (re)executed when needed

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A B

D E

C

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30


Cell Types

31

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Cell Types

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1E


Cell Types

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2E


Cell Types

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3E


Cell Types

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4E


Data Attributes

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Dataset Types

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Dataset Hierarchy

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Dataset Hierarchy

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Dataset Hierarchy

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Dataset Hierarchy

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Dataset Hierarchy

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Dataset Hierarchy

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Demos

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Many examples available at:https://lorensen.github.io/VTKExamples/site/Python/

https://lorensen.github.io/VTKExamples/site/Python/


Additional ReferencesVTK Wiki http://www.vtk.org/Wiki/VTKVTK Tutorialin source code under Examples/TutorialVTK Examplesin source code under Examples/, primarily VisualizationAlgorithms, Rendering, Graphics, Geometric Modeling

VTK User’s GuideKitware Inc., ISBN 1-930934-0804The Visualization ToolkitAn object-oriented Approach to 3D Graphics,

3rd edition, W. Schroeder, K. Martin, B. Lorensen, Kitware

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http://www.vtk.org/Wiki/VTK

Lecture - Purdue University · Lecture January 16, 2020 3. CS530 / Spring 2020 : Introduction to...

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