refactor: plotter, generator

pkg/bitmap/bitmap.go

@@ -9,35 +9,35 @@ import (
 
 const intSize = 32
 
-type bitmap struct {
+type Bitmap struct {
 	width     uint32
 	height    uint32
 	bitVector []uint32
 }
 
-func NewBitmap(width uint32, height uint32) bitmap {
-	return bitmap{width: width, height: height, bitVector: make([]uint32, int(math.Ceil(float64(width*height)/intSize)))}
+func NewBitmap(width uint32, height uint32) Bitmap {
+	return Bitmap{width: width, height: height, bitVector: make([]uint32, int(math.Ceil(float64(width*height)/intSize)))}
 }
 
-func (p bitmap) Set(x, y int) {
+func (p Bitmap) Set(x, y int) {
 	boundX := (p.width + uint32(x)) % p.width
 	boundY := (p.height + uint32(y)) % p.height
 	p.set(boundX + boundY*p.width)
 }
 
-func (p bitmap) set(number uint32) {
+func (p Bitmap) set(number uint32) {
 	p.bitVector[number/intSize] |= (0b1 << (number % intSize))
 }
 
-func (p bitmap) IsSet(x, y int) bool {
+func (p Bitmap) IsSet(x, y int) bool {
 	return p.isSet(uint32(x) + uint32(y)*p.width)
 }
 
-func (p bitmap) isSet(number uint32) bool {
+func (p Bitmap) isSet(number uint32) bool {
 	return p.bitVector[number/intSize]&(0b1<<(number%intSize)) > 0
 }
 
-func (p bitmap) FreeCount() (result int) {
+func (p Bitmap) FreeCount() (result int) {
 	result = int(p.width) * int(p.height)
 	for i := range p.bitVector {
 		result -= bits.OnesCount32(p.bitVector[i])
@@ -45,7 +45,7 @@ func (p bitmap) FreeCount() (result int) {
 	return
 }
 
-func (p bitmap) GetFreeN(number int) (int, int, error) {
+func (p Bitmap) GetFreeN(number int) (int, int, error) {
 	if p.FreeCount() == 0 {
 		return 0, 0, errors.New("no free pixels left")
 	}
@@ -65,7 +65,7 @@ func (p bitmap) GetFreeN(number int) (int, int, error) {
 	return 0, 0, fmt.Errorf("get free pixel: no such number=%d, max=%d", number, n)
 }
 
-func (p bitmap) SetFreeN(number int) error {
+func (p Bitmap) SetFreeN(number int) error {
 	if p.FreeCount() == 0 {
 		return errors.New("no free pixels left")
 	}
@@ -84,7 +84,7 @@ func (p bitmap) SetFreeN(number int) error {
 	return fmt.Errorf("set free pixel: no such number=%d, max=%d", number, n)
 }
 
-func (p bitmap) Circle(x, y int, r float32, fill bool) {
+func (p Bitmap) Circle(x, y int, r float32, fill bool) {
 	plotX := 0
 	plotY := int(math.Ceil(float64(r)))
 	delta := 3 - 2*plotY
@@ -115,7 +115,7 @@ func (p bitmap) Circle(x, y int, r float32, fill bool) {
 	}
 }
 
-func (p bitmap) circleAdjacent(x, y int, r float64) {
+func (p Bitmap) circleAdjacent(x, y int, r float64) {
 	plotX := 0
 	plotY := int(math.Ceil(r))
 	delta := 1 - 2*plotY
@@ -139,7 +139,7 @@ func (p bitmap) circleAdjacent(x, y int, r float64) {
 	}
 }
 
-func (p bitmap) octant(x, y int, plotX, plotY int) {
+func (p Bitmap) octant(x, y int, plotX, plotY int) {
 	p.Set(x+plotX, y+plotY)
 	p.Set(x+plotX, y-plotY)
 	p.Set(x-plotX, y+plotY)
@@ -150,13 +150,13 @@ func (p bitmap) octant(x, y int, plotX, plotY int) {
 	p.Set(x-plotY, y-plotX)
 }
 
-func (p bitmap) Clear() {
+func (p Bitmap) Clear() {
 	for i := range p.bitVector {
 		p.bitVector[i] &= 0
 	}
 }
 
-func (p bitmap) String() string {
+func (p Bitmap) String() string {
 	px := map[bool]string{true: "██", false: "░░"}
 	var result string
 	cnt := 0