func TestFontsPDF() {
pdf := vgpdf.New(vg.Inches(4), vg.Inches(4))
DrawFonts(pdf)
if err := pdf.Save("fonts.pdf"); err != nil {
panic(err)
}
}
func TestArcsPDF() {
pdf := vgpdf.New(vg.Inches(4), vg.Inches(4))
DrawArcs(pdf)
if err := pdf.Save("arcs.pdf"); err != nil {
panic(err)
}
}
//Save saves the board (i.e. all subplots, appropriately laid out) to the specified filename.
//It basically rips off the implementation of Save in plotinum to support various file formats.
func (b *Board) Save(width, height float64, file string) (err error) {
w, h := vg.Inches(width), vg.Inches(height)
var c interface {
vg.Canvas
Size() (w, h vg.Length)
io.WriterTo
}
switch ext := strings.ToLower(filepath.Ext(file)); ext {
case ".eps":
c = vgeps.NewTitle(w, h, file)
case ".jpg", ".jpeg":
c = vgimg.JpegCanvas{Canvas: vgimg.New(w, h)}
case ".pdf":
c = vgpdf.New(w, h)
case ".png":
c = vgimg.PngCanvas{Canvas: vgimg.New(w, h)}
case ".svg":
c = vgsvg.New(w, h)
case ".tiff":
c = vgimg.TiffCanvas{Canvas: vgimg.New(w, h)}
default:
return fmt.Errorf("Unsupported file extension: %s", ext)
}
for _, subplot := range b.SubPlots {
w, h := c.Size()
drawArea := plot.DrawArea{
Canvas: c,
Rect: subplot.ScaledRect(float64(w), float64(h)),
}
subplot.Plot.Draw(drawArea)
}
f, err := os.Create(file)
if err != nil {
return err
}
if _, err = c.WriteTo(f); err != nil {
return err
}
say.Println(0, say.Yellow("Saved %s", file))
return f.Close()
}
// Save saves the plot to an image file. Width and height
// are specified in inches, and the file format is determined
// by the extension. Supported extensions are
// .eps, .jpg, .jpeg, .pdf, .png, .svg, and .tiff.
func (p *Plot) Save(width, height float64, file string) (err error) {
w, h := vg.Inches(width), vg.Inches(height)
var c interface {
vg.Canvas
Size() (w, h vg.Length)
io.WriterTo
}
switch ext := strings.ToLower(filepath.Ext(file)); ext {
case ".eps":
c = vgeps.NewTitle(w, h, file)
case ".jpg", ".jpeg":
c = vgimg.JpegCanvas{Canvas: vgimg.New(w, h)}
case ".pdf":
c = vgpdf.New(w, h)
case ".png":
c = vgimg.PngCanvas{Canvas: vgimg.New(w, h)}
case ".svg":
c = vgsvg.New(w, h)
case ".tiff":
c = vgimg.TiffCanvas{Canvas: vgimg.New(w, h)}
default:
return fmt.Errorf("Unsupported file extension: %s", ext)
}
p.Draw(MakeDrawArea(c))
f, err := os.Create(file)
if err != nil {
return err
}
if _, err = c.WriteTo(f); err != nil {
return err
}
return f.Close()
}