Method parseObjLine

loader/obj/obj.go:427–472

Parses obj file line, dispatching to specific parsers

(line string)

// Parses obj file line, dispatching to specific parsers
func (dec *Decoder) parseObjLine(line string) error {

	// Ignore empty lines
	fields := strings.Fields(line)
	if len(fields) == 0 {
		return nil
	}
	// Ignore comment lines
	ltype := fields[0]
	if strings.HasPrefix(ltype, "#") {
		return nil
	}
	switch ltype {
	// Material library
	case "mtllib":
		return dec.parseMatlib(fields[1:])
	// Object name
	case "o":
		return dec.parseObject(fields[1:])
	// Group names. We are considering "group" the same as "object"
	// This may not be right
	case "g":
		return dec.parseObject(fields[1:])
	// Vertex coordinate
	case "v":
		return dec.parseVertex(fields[1:])
	// Vertex normal coordinate
	case "vn":
		return dec.parseNormal(fields[1:])
	// Vertex texture coordinate
	case "vt":
		return dec.parseTex(fields[1:])
	// Face vertex
	case "f":
		return dec.parseFace(fields[1:])
	// Use material
	case "usemtl":
		return dec.parseUsemtl(fields[1:])
	// Smooth
	case "s":
		return dec.parseSmooth(fields[1:])
	default:
		dec.appendWarn(objType, "field not supported: "+ltype)
	}
	return nil
}

// Parses a mtllib line:
// mtllib <name>