Working with 3D models

Original file formats

• *.x3d
• *.obj wavefront

Comments

• to download a model (x3d, obj and textures) visit 3d+map - open 3d scene then click the download button.
• textures are *.png files are shared between x3d and obj
• x3d - textures are listed inside
• obj - textures are listed in an extra (material) file - *.mtl
• most of the time textures will be located in the same dir
• if downloading a model manually - do not forget textures (and a corresponding *.mtl for *.obj)

Programs

• MeshLab
• CloudCompare
• Blender

Convert *.x3d to other 3D formats

MeshLab

• File > Export Mesh As... supports a few formats: *.3ds, *.ply, *.stl, *.obj, *.dxf, *.dae, *.xyz, etc.
  • *.x3d to *.obj:
    • there will be 2 files generated: *.obj and *.obj.mtl - the latter contains a list of texture files which should be kept around as well

Blender

• Supports some x3d files but not all

View

MeshLab

• Open *.x3d

Notes:

• Lights off
• Couldn't adjust proper camera settings

Blender

• Convert to *.obj in MeshLab
• File > Import > Wavefront (.obj)
• Switch viewport shading to texture (in Default view it's located next to the Object mode)
• Also, set Shading Multitexture shadeless

CloudCompare

• Convert to *.obj in MeshLab
• Drag and drop *.obj into the CloudCompare window
• Options > Display parameters > Colors and Materials > set all lights to white
• Options > Camera parameters > set Camera/Eye center and fov