cmd

cmd/mesh/mesh.go

@@ -0,0 +1,91 @@
+package main
+
+import (
+	"flag"
+	"image"
+	"image/color"
+	"image/draw"
+	"image/png"
+	"os"
+	"time"
+
+	"github.com/golang/freetype/truetype"
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/gofont/gomono"
+	"golang.org/x/image/math/fixed"
+	//	"github.com/droyo/styx"
+	//	"io/fs"
+)
+
+type Mesh struct {
+	image.Image
+	X, Y int // divide
+}
+
+// using source's color.Model
+func (mesh Mesh) ColorModel() color.Model { return mesh.Image.ColorModel() }
+
+// using source's image.Rectangle
+func (mesh Mesh) Bounds() image.Rectangle { return mesh.Image.Bounds() }
+func (mesh Mesh) At(x, y int) color.Color {
+	dx, dy := mesh.Image.Bounds().Dx(), mesh.Image.Bounds().Dy()
+	if (x%(dx/mesh.X)) == 0 || (y%(dy/mesh.Y)) == 0 {
+		return color.Black
+	}
+	return mesh.Image.At(x, y)
+}
+
+func render(img image.Image) draw.Image {
+	dst := image.NewRGBA(img.Bounds())
+	draw.Draw(dst, dst.Bounds(), img, image.Point{}, draw.Src)
+	return dst
+}
+
+func main() {
+//	x := flag.Int("x", 2, "use to grid by x axis")
+//	y := flag.Int("y", 2, "use to grid by y axis")
+	flag.Parse() // now flags is ready to use
+
+	img, err := png.Decode(os.Stdin)
+	if err != nil {
+		panic(err)
+	}
+//		Mesh{ // our image modifyer
+//			Image: img,
+//			X:     *x,
+//			Y:     *y,
+//		},
+
+	dst := render(
+	img,
+	)
+
+	f, err := truetype.Parse(gomono.TTF)
+	if err != nil {
+		panic(err)
+	}
+	face := truetype.NewFace(f, &truetype.Options{
+		Size:    float64(img.Bounds().Dx() / 19),
+		DPI:     72,
+		Hinting: font.HintingNone,
+	})
+
+	d := &font.Drawer{
+		Dst:  dst,
+		Src:  image.NewUniform(color.Black),
+		Face: face,
+		Dot: fixed.Point26_6{fixed.Int26_6(img.Bounds().Dx() /
+			9*64,
+		),
+			fixed.Int26_6(img.Bounds().Dy() /
+				5*64,
+			),
+		},
+	}
+	d.DrawString(time.Now().Format(time.Kitchen))
+
+	err = png.Encode(os.Stdout, dst)
+	if err != nil {
+		panic(err)
+	}
+}