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Polygonal modeling

Polygonal modeling is an approach for modeling objects by representing or approximating their surfaces using polygons. Polygonal modeling is well suited to scanline rendering and is therefore the method of choice for real-time computer graphics. Alternate methods of representing 3D objects include NURBS surfaces, subdivision surfaces, and equation-based representations used in ray tracers.

PTSource PolyDraw

Current version 18 released 21/10/2020 for Windows

PTSource PolyDraw is a free 3D polygonal modeller for Windows x86 and x64, for creating or modifying 3D objects using a mesh of 3D points and parametric NURBS Curves .Exports and imports to over 40 formats including WebVR and 3D Printing.

Maintenance You can download here. You can download here. Help here.



  • Fast rendering (ASM 3d engine)
  • WebVR A-Frame template generation.
  • Exports to WebVR (ready for interactive web viewing), STL for 3D printing, JSON for ThreeJS and more, see supported formats bellow.
  • Allows you to create objects from Sweeps & Extrusions, basic shapes (cubes, cylinders, etc), meshes (vertices & triangles) and parametric NURBS Curves.
  • Pre-made example models inside the program folder under Objects.
  • Has lists to allow you to view & edit all the data by keyboard.

Formats import export table current version

Format Import Export
PTSource PolyDraw Format (.D3D)
PTSource VRGrid Format (.VROBJ)
3D Studio Binary (.3DS)
3D Studio Ascii (.ASC)
3D Studio Scene (.ASE)
Spreadsheet Text File (.CSV)
Wavefront (.OBJ) + WebVR A-Frame (.HTML)
Wavefront Object (.OBJ)
Collada Object (.DAE)
GLTF Binary (.GLB)
Stereolithography Binary (.STL)
Stereolithography Ascii (.STL)
Hood Triangle Binary (.TRI)
Hood Triangle Ascii (.TRI)
Open Inventor (.IV)
Stanford Polygon Library (.PLY)
LightWave Object (.LWO)
LightWave Scene (.LWS)
TrueSpace Object (.COB)
TrueSpace Scene (.SCN)
Quick3D Object (.Q3O)
Quick3D Scene (.Q3S)
Modo (.LXO)
Autodesk ( .FBX )
VRML 1.0 (.WRL)
VRML 2.0 (.WRL)
ThreeJS (.JSON)
Stanford Polygon Library (.PLY)
POV-Ray (.POV)
TECPLOT files (.TEC)
Neutral File Format (.NFF)
Sense8 WorldToolkit (.NFF)
Quake I (.MDL)
Quake II (.MD2)
Quake III (.MD3)
Quake III Map (.PK3)
Raw Triangles (.RAW)
Object File Format (.OFF)
SoftImage (.HRC)
Movie.BYU geometry (.BYU)
Digistar II VLA ( .VLA )
Biovision ( .BVH )
Ogre XML ( .XML )
UnreaL ( .3D )
Izware Nendo ( .NDO )
3D GameStudio Terrain ( .HMP )
Terragen Terrain ( .TER )
BlitzBasic 3D ( .B3D )
Extensible 3D ( .X3D )
IFC/Step ( .IFC )
Renderware ( .RWX )

Note : This software does not use a digitally signed installer, so you might get a warning. You should dismiss it and continue.

  • Download the Installer.
  • When Windows says the installer is not trusted, click "more info" and then "run anyway".
  • Follow the instructions in the installer.
  • You can now launch the software from your desktop.

You can download here.


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