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ViewObj

OpenGL .obj Viewer

A simple OpenGL viewer for .obj files. I wrote it for OpenGL 2.1 (with VAO and shaders) so that it runs reliably on lots of machines. I might extend or fork this to do more interesting things.

Limitations

.obj files must have:

  • points
  • texture coordinates
  • normals

and must be triangulated

MTL files are not supported.

Instructions

If you run the viewer with no parameters it uses a default mesh and texture.

./viewer

You can specify:

  • .obj file to load

    -o mymesh.obj

  • texture to load

    -tex mytexture.png

  • shaders to load

    -vs myshader.vert -fs myshader.frag

  • scale to apply uniformly (if the mesh is too big to fit in view)

    -sca 0.5

  • translation XYZ to apply (to centre mesh in view)

    -tra 0.0 -1.0 0.0

Keys

  • F11 - screenshot
  • N - toggle visualisation of normals
  • P - fill/wireframe/points

To Do

  • Support meshes with different components
  • Display my .apg format meshes as well
  • A version for WebGL