// AddLayer adds a new layer with given name, color and line type.
// If setcurrent is true, set current layer to it.
func (d *Drawing) AddLayer(name string, cl color.ColorNumber, lt *table.LineType, setcurrent bool) (*table.Layer, error) {
if l, exist := d.Layers[name]; exist {
if setcurrent {
d.CurrentLayer = l
}
return l, errors.New(fmt.Sprintf("layer %s already exists", name))
}
l := table.NewLayer(name, cl, lt)
l.SetPlotStyle(d.PlotStyle)
d.Layers[name] = l
d.Sections[2].(table.Tables).AddLayer(l)
if setcurrent {
d.CurrentLayer = l
}
return l, nil
}
// ParseLayer parses LAYER tables.
func ParseLayer(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error) {
var name string
var flag int
var col color.ColorNumber
var lt *table.LineType
var lw int
for _, dt := range data {
switch dt[0] {
case "2":
name = dt[1]
case "70":
val, err := strconv.ParseInt(strings.TrimSpace(dt[1]), 10, 64)
if err != nil {
return nil, err
}
flag = int(val)
case "62":
val, err := strconv.ParseInt(strings.TrimSpace(dt[1]), 10, 64)
if err != nil {
return nil, err
}
col = color.ColorNumber(val)
case "6":
l, err := d.LineType(dt[1])
if err != nil {
return nil, err
}
lt = l
case "370":
val, err := strconv.ParseInt(strings.TrimSpace(dt[1]), 10, 64)
if err != nil {
return nil, err
}
lw = int(val)
case "390":
// plotstyle
}
}
l := table.NewLayer(name, col, lt)
l.SetFlag(flag)
l.SetLineWidth(lw)
l.SetPlotStyle(d.PlotStyle)
return l, nil
}