Diff
diff --git a/canvas/main.go b/canvas/main.go
deleted file mode 100644
index 0f51af9..0000000
--- a/canvas/main.go
+++ /dev/null
@@ -1,188 +0,0 @@
-package canvas
-
-import (
- "image"
- "image/color"
- "image/draw"
- "io/ioutil"
- "math"
-
- "github.com/golang/freetype/truetype"
- "golang.org/x/image/font"
- "golang.org/x/image/math/fixed"
-)
-
-// Canvas represents a drawing canvas
-type Canvas struct {
- Context *image.RGBA
- StrokeStyle color.RGBA
- FillStyle color.RGBA
- path []image.Point
- Font *truetype.Font
-}
-
-// NewCanvas creates a new canvas with the specified width and height
-func NewCanvas(width, height int) *Canvas {
- img := image.NewRGBA(image.Rect(0, 0, width, height))
- white := color.RGBA{255, 255, 255, 0}
- draw.Draw(img, img.Bounds(), &image.Uniform{white}, image.Point{}, draw.Src)
-
- return &Canvas{
- Context: img,
- StrokeStyle: color.RGBA{0, 0, 0, 255},
- FillStyle: color.RGBA{0, 0, 0, 255},
- }
-}
-
-// SetFont sets the font for text rendering
-func (c *Canvas) SetFont(fontPath string) error {
- fontBytes, err := ioutil.ReadFile(fontPath)
- if err != nil {
- return err
- }
- f, err := truetype.Parse(fontBytes)
- if err != nil {
- return err
- }
- c.Font = f
- return nil
-}
-
-// MoveTo starts a new sub-path at the given (x, y) coordinates
-func (c *Canvas) MoveTo(x, y int) {
- c.path = append(c.path, image.Point{x, y})
-}
-
-// LineTo adds a line to the current path
-func (c *Canvas) LineTo(x, y int) {
- if len(c.path) > 0 {
- lastPoint := c.path[len(c.path)-1]
- c.path = append(c.path, image.Point{x, y})
- drawLine(c.Context, lastPoint, image.Point{x, y}, c.StrokeStyle)
- }
-}
-
-// BeginPath starts a new path
-func (c *Canvas) BeginPath() {
- c.path = nil
-}
-
-// Stroke draws the current path
-func (c *Canvas) Stroke() {
- for i := 1; i < len(c.path); i++ {
- drawLine(c.Context, c.path[i-1], c.path[i], c.StrokeStyle)
- }
- c.BeginPath()
-}
-
-// Fill fills the current path
-func (c *Canvas) Fill() {
- if len(c.path) > 0 {
- drawPolygon(c.Context, c.path, c.FillStyle)
- }
- c.BeginPath()
-}
-
-// Arc adds an arc to the current path
-func (c *Canvas) Arc(x, y, radius, startAngle, endAngle float64) {
- steps := 100
- for i := 0; i <= steps; i++ {
- angle := startAngle + (endAngle-startAngle)*float64(i)/float64(steps)
- px := x + radius*math.Cos(angle)
- py := y + radius*math.Sin(angle)
- if i == 0 {
- c.MoveTo(int(px), int(py))
- } else {
- c.LineTo(int(px), int(py))
- }
- }
-}
-
-// Rect adds a rectangle to the path
-func (c *Canvas) Rect(x, y, width, height int) {
- c.MoveTo(x, y)
- c.LineTo(x+width, y)
- c.LineTo(x+width, y+height)
- c.LineTo(x, y+height)
- c.LineTo(x, y)
-}
-
-// FillRect fills a rectangle
-func (c *Canvas) FillRect(x, y, width, height int) {
- draw.Draw(c.Context, image.Rect(x, y, x+width, y+height), &image.Uniform{c.FillStyle}, image.Point{}, draw.Src)
-}
-
-// StrokeRect strokes a rectangle
-func (c *Canvas) StrokeRect(x, y, width, height int) {
- c.Rect(x, y, width, height)
- c.Stroke()
-}
-
-// ClearRect clears a rectangle
-func (c *Canvas) ClearRect(x, y, width, height int) {
- draw.Draw(c.Context, image.Rect(x, y, x+width, y+height), &image.Uniform{color.RGBA{255, 255, 255, 255}}, image.Point{}, draw.Src)
-}
-
-// FillText draws filled text
-func (c *Canvas) FillText(text string, x, y int, size float64) error {
- if c.Font == nil {
- return nil
- }
- face := truetype.NewFace(c.Font, &truetype.Options{Size: size})
- drawer := &font.Drawer{
- Dst: c.Context,
- Src: &image.Uniform{c.FillStyle},
- Face: face,
- Dot: fixed.Point26_6{fixed.I(x), fixed.I(y)},
- }
- drawer.DrawString(text)
- return nil
-}
-
-// StrokeText draws stroked text
-func (c *Canvas) StrokeText(text string, x, y int, size float64) error {
- // This example does not implement stroked text.
- // Implementing stroked text would require a more complex approach.
- return c.FillText(text, x, y, size)
-}
-
-// drawLine draws a line between two points on the image
-func drawLine(img *image.RGBA, p1, p2 image.Point, col color.RGBA) {
- dx := math.Abs(float64(p2.X - p1.X))
- dy := math.Abs(float64(p2.Y - p1.Y))
- sx := -1
- if p1.X < p2.X {
- sx = 1
- }
- sy := -1
- if p1.Y < p2.Y {
- sy = 1
- }
- err := dx - dy
-
- for {
- img.Set(p1.X, p1.Y, col)
- if p1.X == p2.X && p1.Y == p2.Y {
- break
- }
- e2 := 2 * err
- if e2 > -dy {
- err -= dy
- p1.X += sx
- }
- if e2 < dx {
- err += dx
- p1.Y += sy
- }
- }
-}
-
-// drawPolygon fills a polygon defined by the points with the specified color
-func drawPolygon(img *image.RGBA, points []image.Point, col color.RGBA) {
- for i := 1; i < len(points); i++ {
- drawLine(img, points[i-1], points[i], col)
- }
- if len(points) > 2 {
- drawLine(img, points[len(points)-1], points[0], col)
- }
-}
