3d extrusion using programming language java dave houben · 3d extrusion using programming language...
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![Page 1: 3D Extrusion using programming language Java Dave Houben · 3D Extrusion using programming language Java Dave Houben. Input data set Input data set from 2D dwg drawing • Extracting](https://reader030.vdocument.in/reader030/viewer/2022040712/5e15ba85a72d7a68237e9d83/html5/thumbnails/1.jpg)
3D Extrusion Model of TU Delft
3D Extrusion using programming language Java
Dave Houben
![Page 2: 3D Extrusion using programming language Java Dave Houben · 3D Extrusion using programming language Java Dave Houben. Input data set Input data set from 2D dwg drawing • Extracting](https://reader030.vdocument.in/reader030/viewer/2022040712/5e15ba85a72d7a68237e9d83/html5/thumbnails/2.jpg)
Input data set
Input data set from 2D dwg drawing
• Extracting buildings from the original drawing
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Input data set
Input data set from 2D dwg drawing
• Extracting buildings from the original drawing
• Manipulate data manually and with FME before extrusion
• Add “missing” geometries to buildings
• Snap lines to close areas
• Create polygons
• Simplify geometry
• Delete polygon inside polygon
• Delete unintentional polygons
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Input data set – Missing geometry
![Page 5: 3D Extrusion using programming language Java Dave Houben · 3D Extrusion using programming language Java Dave Houben. Input data set Input data set from 2D dwg drawing • Extracting](https://reader030.vdocument.in/reader030/viewer/2022040712/5e15ba85a72d7a68237e9d83/html5/thumbnails/5.jpg)
Input data set – Missing geometry
![Page 6: 3D Extrusion using programming language Java Dave Houben · 3D Extrusion using programming language Java Dave Houben. Input data set Input data set from 2D dwg drawing • Extracting](https://reader030.vdocument.in/reader030/viewer/2022040712/5e15ba85a72d7a68237e9d83/html5/thumbnails/6.jpg)
Input data set – Cleaning up
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3D extrusion using laser elevation data and building polygons from 2D dxf drawing
Point in Polygon
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Point in Polygon
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Extrusion to Polylines
Java programming language is used to read the ascii input and create autodesk script output. The script can be read with any autodesk CAD software.
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Extrusion to Polylines
![Page 11: 3D Extrusion using programming language Java Dave Houben · 3D Extrusion using programming language Java Dave Houben. Input data set Input data set from 2D dwg drawing • Extracting](https://reader030.vdocument.in/reader030/viewer/2022040712/5e15ba85a72d7a68237e9d83/html5/thumbnails/11.jpg)
Extrusion to Polylines
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Different data output
• Output in autocad 3D polylines for input in database
• Output in special format for TETGEN
• No intersections between faces
• No double points because of 1D surfaces
• Output in autocad 3D faces for SketchUp modelling
• 3D faces only 3 or 4 points, therefore only walls
• Simplify geometry for textures
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Different data output - Tetgen
Screenshot provided by Friso Penninga