narinyir/opengl_obj_viewer

A simple opengl viewer for .obj files.

#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