CashFlow, A Visualization Framework for 3D Flow - Studierstube ...

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ContentsIntorductionvi1 Introduction 12 Related Work 32.1 Data Flow Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.1.1 Visualization Pipeline . . . . . . . . . . . . . . . . . . . . . 62.1.2 Constraint Based Visual Programming [1979] . . . . . . . . . 102.1.3 Object Oriented Visual Programming [1988] . . . . . . . . . 122.1.4 AVS, the Application Visualization System [1989] . . . . . . 142.1.5 Open DX, Open Visualization Data Explorer [1991] . . . . . 152.1.6 Open Inventor [1992] . . . . . . . . . . . . . . . . . . . . . 162.1.7 VTK, the Visualization ToolKit [1996] . . . . . . . . . . . . 182.2 Flow Visualization Algorithms . . . . . . . . . . . . . . . . . . . . . 192.2.1 Basic Techniques . . . . . . . . . . . . . . . . . . . . . . . . 202.2.2 Particle Trace . . . . . . . . . . . . . . . . . . . . . . . . . . 222.2.3 Contour Lines and Surfaces . . . . . . . . . . . . . . . . . . 272.2.4 Texture Advection: Spot Noise . . . . . . . . . . . . . . . . . 292.2.5 Texture Advection: LIC . . . . . . . . . . . . . . . . . . . . 302.2.6 Texture Advection in 3D . . . . . . . . . . . . . . . . . . . . 312.2.7 Flow Field Topology . . . . . . . . . . . . . . . . . . . . . . 332.2.8 Volume Rendering . . . . . . . . . . . . . . . . . . . . . . . 363 Software Design 383.1 CashFlow Visualization Pipeline . . . . . . . . . . . . . . . . . . . . 383.2 Using the Scene Graph . . . . . . . . . . . . . . . . . . . . . . . . . 423.3 Indirect References & Linking of Nodes . . . . . . . . . . . . . . . . 433.4 Using Virtual Arrays as a Filter . . . . . . . . . . . . . . . . . . . . . 463.5 General CashFlow UML Diagram . . . . . . . . . . . . . . . . . . . 493.5.1 Example for CashFlow Scene Graph . . . . . . . . . . . . . . 503.6 MultiData Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 513.6.1 Scripting, Unique Key Concept . . . . . . . . . . . . . . . . 523.7 DataAccess Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . 533.7.1 Virtual Array Types in CashFlow . . . . . . . . . . . . . . . 54iii
3.7.2 Drawback of the Virtual Array . . . . . . . . . . . . . . . . . 583.8 Grid Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 593.8.1 Support Several Different Grids . . . . . . . . . . . . . . . . 593.8.2 Decoupling of Visualization Algorithm and Type of Grid . . . 603.9 Mapper Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 613.10 Render Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 623.11 Loader Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633.12 User Interaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 643.13 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 654 Implementation 664.1 Accessing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 684.1.1 Action & Element . . . . . . . . . . . . . . . . . . . . . . . 694.1.2 SoElements in CashFlow . . . . . . . . . . . . . . . . . . . . 704.2 UML Inheritance Diagram . . . . . . . . . . . . . . . . . . . . . . . 714.2.1 UML Sequence Diagram of Data Access . . . . . . . . . . . 724.3 SoMultiDataNode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 744.3.1 SoMultiDataNode – File Format . . . . . . . . . . . . . . . . 764.4 SoDataAccessNode . . . . . . . . . . . . . . . . . . . . . . . . . . . 764.4.1 SbDataAccessMap . . . . . . . . . . . . . . . . . . . . . . . 774.4.2 Virtual Array Iterator using SoDataAccessNode . . . . . . . . 804.4.3 SoDataAccessNode – File Format . . . . . . . . . . . . . . . 814.5 Implementation of SoBaseGrid . . . . . . . . . . . . . . . . . . . . . 824.5.1 Geometric Primitives . . . . . . . . . . . . . . . . . . . . . . 834.5.2 Grid Iterators . . . . . . . . . . . . . . . . . . . . . . . . . . 834.5.3 Collection of SoBaseGrid Nodes . . . . . . . . . . . . . . . . 844.5.4 SoStructuredGrid2D – File Format . . . . . . . . . . . . . . . 914.6 Implementation of Data Consumers . . . . . . . . . . . . . . . . . . 924.6.1 SoLoaderNode . . . . . . . . . . . . . . . . . . . . . . . . . 924.6.2 SoMapperNode . . . . . . . . . . . . . . . . . . . . . . . . . 944.6.3 SoRenderNode . . . . . . . . . . . . . . . . . . . . . . . . . 964.7 CashFlow Class Hierarchy . . . . . . . . . . . . . . . . . . . . . . . 974.7.1 SoBaseGrid Nodes . . . . . . . . . . . . . . . . . . . . . . . 984.7.2 SoCfDataConsumer Nodes . . . . . . . . . . . . . . . . . . . 994.7.3 SoCfMapperNode . . . . . . . . . . . . . . . . . . . . . . . 994.7.4 SoCfRenderNode . . . . . . . . . . . . . . . . . . . . . . . . 1004.7.5 SoCfLoaderNode . . . . . . . . . . . . . . . . . . . . . . . . 1005 Results 1015.1 Combining MultiData Node & DataAccess Node . . . . . . . . . . . 1015.2 CashFlow Scene Graph Examples . . . . . . . . . . . . . . . . . . . 1065.3 Curvilinear Grid Visualization . . . . . . . . . . . . . . . . . . . . . 1105.4 Streamlines in CashFlow . . . . . . . . . . . . . . . . . . . . . . . . 1115.5 Grid Iterator Examples . . . . . . . . . . . . . . . . . . . . . . . . . 1135.6 Example for Parameterization . . . . . . . . . . . . . . . . . . . . . 1155.7 Polygonal Surfaces & Textured Surfaces . . . . . . . . . . . . . . . . 117iv
Page 1 and 2: D I P L O M A R B E I TCash FlowA V
Page 3: KurzfassungDie Fusionierung von Vis
Page 9 and 10: Introductionis then executed using
Page 11 and 12: Related WorkAll of these frameworks
Page 13 and 14: Related Work2.1. Data Flow Models2.
Page 15 and 16: Related Work2.1. Data Flow Modelspu
Page 23 and 24: Related Work2.1. Data Flow ModelsTh
Page 27 and 28: Related Work2.2. Flow Visualization
Page 45 and 46: Chapter 3Software Design3.1 CashFlo
Page 47 and 48: Software Design3.1. CashFlow Visual
Page 49 and 50: Software Design3.2. Using the Scene
Page 51 and 52: Software Design3.3. Indirect Refere
Page 53 and 54: Software Design3.4. Using Virtual A
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Software Design3.4. Using Virtual A
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Software Design3.5. General CashFlo
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Software Design3.6. MultiData NodeT
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Software Design3.7. DataAccess Node
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Software Design3.8. Grid Nodealgori
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Software Design3.10. Render Nodes-
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Software Design3.12. User Interacti
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Chapter 4ImplementationFigure 4.1:
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Implementation4.1. Accessing Data4.
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Implementation4.1. Accessing Data4.
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Implementation4.2. UML Inheritance
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Implementation4.3. SoMultiDataNode4
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Implementation4.4. SoDataAccessNode
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Implementation4.5. Implementation o
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Implementation4.7. CashFlow Class H
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Implementation4.7. CashFlow Class H
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Results5.1. Combining MultiData Nod
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Results5.1. Combining MultiData Nod
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Results5.2. CashFlow Scene Graph Ex
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Results5.2. CashFlow Scene Graph Ex
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Results5.3. Curvilinear Grid Visual
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Results5.4. Streamlines in CashFlow
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Results5.5. Grid Iterator ExamplesF
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Results5.6. Example for Parameteriz
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Results5.7. Polygonal Surfaces & Te
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Appendix AField connection &TGS Mes
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DanksagungVielen Dank an meine Schw
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2.35 Colored Flow field topology ex
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Bibliography[3D] Java 3D. Java 3D c
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[CEI94] CEI. http://www.ceintl.com/
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[EYSK94] David S. Ebert, Roni Yagel
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[HP97] Hans - Christian Hege and Ko
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[MAY] MAYA. MAYA c○ by ALIAS c○
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[RBHC91] B. Lucas R. B. Haber and N
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[Tog02] Together. Borland R○ Toge
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[WJSV92] G. D. Montanaro William J.
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network, 39OpenDX, 15sink, 13source
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flow field, 19transfer function, 6t
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