Add debug to always draw helper points

cmd/basispatroon_broek/basispatroon_broek.go

@@ -20,7 +20,7 @@ func main() {
 
 	pat := broek.GenereerPatroon()
 	c := canvas.New(200, 200)
-	err := pat.ToCanvas(c)
+	err := pat.ToCanvas(c, false)
 	if err != nil {
 		panic(err)
 	}

cmd/gopatterns/gopatterns.go

@@ -20,11 +20,13 @@ func main() {
 		templateDir string
 		outputDir   string
 		help        bool
+		debug       bool
 	)
 
 	flag.StringVar(&templateDir, "templates", "templates", "Directory with template files")
 	flag.StringVar(&outputDir, "out", ".", "output directory")
 	flag.BoolVar(&help, "help", false, "show help")
+	flag.BoolVar(&debug, "debug", false, "enable debug mode")
 
 	if err := env.ParseWithFlags(); err != nil {
 		slog.Error("parsing flags failed", "err", err)
@@ -59,7 +61,7 @@ gopatterns [-templates <template-dir>] [-out <output-dir>] input-file
 			return
 		}
 
-		filenames, err := storage.RenderPatterns(pattern, outputDir)
+		filenames, err := storage.RenderPatterns(pattern, outputDir, debug)
 		if err != nil {
 			slog.Error("error occurred while creating pattern", "pattern", arg, "err", err)
 			return

pkg/pattern/pattern.go

@@ -58,7 +58,7 @@ func NewPattern() *Pattern {
 }
 
 // ToCanvas draws the pattern on the provided [canvas.Canvas].
-func (p *Pattern) ToCanvas(c *canvas.Canvas) error {
+func (p *Pattern) ToCanvas(c *canvas.Canvas, debug bool) error {
 	fontDejaVu := canvas.NewFontFamily("latin")
 
 	if err := fontDejaVu.LoadFont(goregular.TTF, 0, canvas.FontRegular); err != nil {
@@ -67,7 +67,7 @@ func (p *Pattern) ToCanvas(c *canvas.Canvas) error {
 
 	face := fontDejaVu.Face(12.0, canvas.Black, canvas.FontRegular)
 	for _, pp := range p.points {
-		point.Draw(c, pp, face)
+		point.Draw(c, pp, face, debug)
 	}
 
 	for _, path := range p.lines {

pkg/pattern/point/point.go

@@ -44,8 +44,8 @@ type Point interface {
 
 // Draw draws a specific Point to the provided [canvas.Canvas].
 // The point is only drawn when the point states that it should be drawn and not must be hidden.
-func Draw(c *canvas.Canvas, point Point, face *canvas.FontFace) {
-	if !point.Draw() || point.Hide() {
+func Draw(c *canvas.Canvas, point Point, face *canvas.FontFace, debug bool) {
+	if !debug && (!point.Draw() || point.Hide()) {
 		return
 	}
 

pkg/pattern/template/renderer.go

@@ -13,7 +13,7 @@ import (
 )
 
 // RenderPatterns loads a [Request] from yaml file and renders the pattern to an SVG.
-func (s Storage) RenderPatterns(request Request, outputDir string) ([]string, error) {
+func (s Storage) RenderPatterns(request Request, outputDir string, debug bool) ([]string, error) {
 	template, err := s.LoadTemplate(request.Template)
 	if err != nil {
 		return nil, fmt.Errorf("load pattern %q: %w", request.Template, err)
@@ -40,7 +40,7 @@ func (s Storage) RenderPatterns(request Request, outputDir string) ([]string, er
 
 		c := canvas.New(200, 200)
 
-		err = pat.ToCanvas(c)
+		err = pat.ToCanvas(c, debug)
 		if err != nil {
 			return nil, fmt.Errorf("write pattern to canvas: %w", err)
 		}