go-obj

A pure Go implementation of a Wavefront .obj loader

todo

Vertex data

• rational and non-rational forms of curve or surface type: basic matrix, Bezier, B-spline, Cardinal, Taylor (cstype)
• degree (deg)
• basis matrix (bmat)
• step size (step)

Elements

• point (p)
• line (l)
• curve (curv)
• 2D curve (curv2)
• surface (surf)

Free-form curve/surface body statements

• parameter values (param)
• outer trimming loop (trim)
• inner trimming loop (hole)
• special curve (scrv)
• special point (sp)
• end statement (end)

Connectivity between free-form surfaces

• connect (con)

Grouping

• group name (g)
• smoothing group (s)
• merging group (mg)
• object name (o)

Display/render attributes

• bevel interpolation (bevel)
• color interpolation (c_interp)
• dissolve interpolation (d_interp)
• level of detail (lod)
• material name (usemtl)
• material library (mtllib)
• shadow casting (shadow_obj)
• ray tracing (trace_obj)
• curve approximation technique (ctech)
• surface approximation technique (stech)

General statement

• call filename.ext arg1 arg2