.gitignore

@@ -1 +0,0 @@
-child porn

clock.go

@@ -8,7 +8,7 @@ import (
 	"io"
 	"time"
 
-	"github.com/potassium5703/imageutils"
+	"git.niplace.ru/XoxJlopeZ_1488/clock/imageutils"
 	"git.niplace.ru/XoxJlopeZ_1488/clock/letter"
 )
 

cmd/main.go

@@ -14,7 +14,7 @@ func Check(err error) {
 }
 
 func main() {
-	addrwithport := ":8080"
+	addrwithport := "localhost:1488"
 	http.HandleFunc("/", 
 		func(w http.ResponseWriter, req *http.Request){
 			clock.Time(w)

go.mod

@@ -2,4 +2,4 @@ module git.niplace.ru/XoxJlopeZ_1488/clock
 
 go 1.22.2
 
-require github.com/potassium5703/imageutils v0.0.0-20240510093354-04c781c03a25
+require github.com/potassium5703/imageutils v0.0.0-20240501131630-56208ff04d2b

go.sum

@@ -1,2 +1,12 @@
-github.com/potassium5703/imageutils v0.0.0-20240510093354-04c781c03a25 h1:HLqfANMhaSvT5j1S8GTdUr9/+MN6OcAeI+YkjPqDTQc=
+github.com/potassium5703/imageutils v0.0.0-20240501100225-479bfc4e86ba h1:8SW0WzADxgL//JdAFii8679Zzz0pcRqo87D14EbiM2E=
-github.com/potassium5703/imageutils v0.0.0-20240510093354-04c781c03a25/go.mod h1:eTB7aSWxiurq6gf9A8pZMtwBZAEYRws37EH0Uytaafo=
+github.com/potassium5703/imageutils v0.0.0-20240501100225-479bfc4e86ba/go.mod h1:eTB7aSWxiurq6gf9A8pZMtwBZAEYRws37EH0Uytaafo=
+github.com/potassium5703/imageutils v0.0.0-20240501125036-f4985ae53c0e h1:qmuIoXkeHbsMGKsAwbyfxHIb+uBHH17GfT3AQsdS3HM=
+github.com/potassium5703/imageutils v0.0.0-20240501125036-f4985ae53c0e/go.mod h1:eTB7aSWxiurq6gf9A8pZMtwBZAEYRws37EH0Uytaafo=
+github.com/potassium5703/imageutils v0.0.0-20240501130104-303bd59901b0 h1:YVngGzaFlXsTEAbm4ZvH7rjS8gRdkqDClRfuiIYRGZ0=
+github.com/potassium5703/imageutils v0.0.0-20240501130104-303bd59901b0/go.mod h1:eTB7aSWxiurq6gf9A8pZMtwBZAEYRws37EH0Uytaafo=
+github.com/potassium5703/imageutils v0.0.0-20240501130520-b4a0a68a1c4f h1:bREjGPiLXCnRgV3BVSSF7XvOK6LDIeOG5wHZPGdy95A=
+github.com/potassium5703/imageutils v0.0.0-20240501130520-b4a0a68a1c4f/go.mod h1:eTB7aSWxiurq6gf9A8pZMtwBZAEYRws37EH0Uytaafo=
+github.com/potassium5703/imageutils v0.0.0-20240501130831-8bbcc64472a5 h1:u5MEXSiQebdDspOHQMa4S3bEl0IY1V8gEmld4t8N8g0=
+github.com/potassium5703/imageutils v0.0.0-20240501130831-8bbcc64472a5/go.mod h1:eTB7aSWxiurq6gf9A8pZMtwBZAEYRws37EH0Uytaafo=
+github.com/potassium5703/imageutils v0.0.0-20240501131630-56208ff04d2b h1:n0wsMMhfnWvD9xO2ri5rWOQMtLgKzOJtQVBjcNIMeZ4=
+github.com/potassium5703/imageutils v0.0.0-20240501131630-56208ff04d2b/go.mod h1:eTB7aSWxiurq6gf9A8pZMtwBZAEYRws37EH0Uytaafo=

imageutils/concat.go

@@ -0,0 +1,126 @@
+package imageutils
+
+import (
+	"image"
+	"image/color"
+	"image/draw"
+)
+
+type Side int
+
+const (
+	Left Side = iota
+	Right
+	Up
+	Down
+)
+
+type pair struct {
+	first, second image.Image
+	side          Side
+}
+
+// Takes color.Model of the first Image.
+func (p pair) ColorModel() color.Model { return p.first.ColorModel() }
+
+func (p pair) Bounds() image.Rectangle {
+	var (
+		b1 = p.first.Bounds()
+		b2 = p.second.Bounds()
+	)
+
+	point := image.Point{}
+	switch p.side {
+	case Left:
+		fallthrough
+	case Right:
+		point = image.Point{
+			X: b1.Dx() + b2.Dx(),
+			Y: max(b1.Dy(), b2.Dy()),
+		}
+	case Up:
+		fallthrough
+	case Down:
+		point = image.Point{
+			X: max(b1.Dx(), b2.Dx()),
+			Y: b1.Dy() + b2.Dy(),
+		}
+	}
+	return image.Rectangle{
+		image.ZP,
+		point,
+	}
+}
+
+func (p pair) At(x, y int) color.Color {
+	img := image.NewRGBA(p.Bounds())
+
+	point := image.Point{}
+	switch p.side {
+	case Left:
+		p.first, p.second = p.second, p.first
+		fallthrough
+	case Right:
+		point = image.Point{-p.first.Bounds().Dx(), 0}
+	case Up:
+		p.first, p.second = p.second, p.first
+		fallthrough
+	case Down:
+		point = image.Point{0, -p.first.Bounds().Dy()}
+	}
+	// draw main
+	draw.Draw(
+		img, img.Bounds(),
+		p.first,
+		image.ZP, draw.Src,
+	)
+
+	// draw second
+	draw.Draw(
+		img, p.Bounds(),
+		p.second,
+		point,
+		draw.Src,
+	)
+
+	return img.At(x, y)
+}
+
+func render(p pair) image.Image {
+	img := image.NewRGBA(p.Bounds())
+
+	point := image.Point{}
+	switch p.side {
+	case Left:
+		p.first, p.second = p.second, p.first
+		fallthrough
+	case Right:
+		point = image.Point{-p.first.Bounds().Dx(), 0}
+	case Up:
+		p.first, p.second = p.second, p.first
+		fallthrough
+	case Down:
+		point = image.Point{0, -p.first.Bounds().Dy()}
+	}
+	// draw main
+	draw.Draw(
+		img, img.Bounds(),
+		p.first,
+		image.ZP, draw.Src,
+	)
+
+	// draw second
+	draw.Draw(
+		img, p.Bounds(),
+		p.second,
+		point,
+		draw.Src,
+	)
+
+	return img
+}
+
+// Concat concatenates second image on a given side.
+func Concat(i1, i2 image.Image, s Side) image.Image {
+	return render(pair{i1, i2, s})
+}

imageutils/scale.go

@@ -0,0 +1,46 @@
+package imageutils
+
+import (
+	"image"
+	"image/color"
+)
+
+type rescaled struct {
+	src   image.Image
+	scale int
+}
+
+// ColorModel implements image.Image interface
+func (r rescaled) ColorModel() color.Model {
+	return r.src.ColorModel()
+}
+
+// Bounds implements image.Image interface
+func (r rescaled) Bounds() image.Rectangle {
+	b := r.src.Bounds()
+	return image.Rectangle{
+		Min: image.Point{
+			X: b.Min.X,
+			Y: b.Min.Y,
+		},
+		Max: image.Point{
+			X: b.Max.X * r.scale,
+			Y: b.Max.Y * r.scale,
+		},
+	}
+}
+
+// At implements image.Image interface
+func (r rescaled) At(x, y int) color.Color {
+	return r.src.At(x/r.scale, y/r.scale)
+}
+
+// Scale scales image.Image to a given scale
+// and then returns image.Image.
+// For now it will work only with positive integers.
+func Scale(img image.Image, scale int) image.Image {
+	if scale < 1 {
+		scale = 1
+	}
+	return rescaled{img, scale}
+}

letter/image.go

@@ -1,7 +1,7 @@
 package letter
 
 import (
-	"github.com/potassium5703/imageutils"
+	"git.niplace.ru/XoxJlopeZ_1488/clock/imageutils"
 	"image"
 	"image/color"
 	"image/draw"

swastika.go

@@ -0,0 +1,115 @@
+//go:build nazis_hitler_AGHAGHAAHHAHAHAH
+
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+)
+
+func Check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}
+
+var numbers = []int{23, 20, 31, 5, 29}
+
+func DoubleChars(r io.Reader) io.Reader {
+	const n = 2
+
+	pr, pw := io.Pipe()
+	scanner := bufio.NewScanner(r)
+	buf := bufio.NewWriter(pw)
+
+	go func() {
+		defer func() {
+			Check(pw.Close())
+		}()
+		defer func() {
+			Check(buf.Flush())
+		}()
+		for scanner.Scan() {
+			text := scanner.Text()
+			for i := range text {
+				s := make([]byte, n, n)
+				for j := 0; j < n; j++ {
+					s[j] = text[i]
+				}
+				buf.Write(s)
+			}
+			_, err := buf.Write([]byte{'\n'})
+			Check(err)
+		}
+	}()
+	return pr
+}
+
+func Tr(r io.Reader, m map[byte]byte) io.Reader {
+	pr, pw := io.Pipe()
+	r = bufio.NewReader(r)
+	buf := bufio.NewWriter(pw)
+
+	go func() {
+		defer func() {
+			Check(pw.Close())
+		}()
+		defer func() {
+			Check(buf.Flush())
+		}()
+	loop:
+		for {
+			bs := make([]byte, 1)
+			_, err := r.Read(bs)
+			if err != nil {
+				switch err {
+				case io.EOF:
+					break loop
+				default:
+					panic(err)
+				}
+			}
+			b, ok := m[bs[0]]
+			if !ok {
+				b = bs[0]
+			}
+			buf.Write([]byte{b})
+		}
+	}()
+	return pr
+}
+
+func BinaryChar() io.Reader {
+	tr := map[byte]byte{
+		'0': ' ',
+		'1': '#',
+	}
+
+	r := func(r io.Reader) io.Reader {
+		return Tr(r, tr)
+	}(func(r io.Reader) io.Reader {
+		return DoubleChars(r)
+	}(func(nums []int) io.Reader {
+		pr, pw := io.Pipe()
+		buf := bufio.NewWriter(pw)
+
+		go func(w io.Writer) {
+			defer func() {
+				Check(pw.Close())
+			}()
+			defer func() {
+				Check(buf.Flush())
+			}()
+			for i := range nums {
+				fmt.Fprintf(w,
+					fmt.Sprintf("%%0%db\n",
+						len(nums)),
+					nums[i])
+			}
+		}(buf)
+
+		return pr
+	}(numbers)))
+	return r
+}