v0.0.496 wpdf fixes and wpdf test.go

wpdf/wpdfLine.go

@@ -10,6 +10,7 @@ type PDFLineOpt struct {
 	drawColor *PDFColor
 	alpha     *dataext.Tuple[float64, PDFBlendMode]
 	capStyle  *PDFLineCapStyle
+	debug     *bool
 }
 
 func NewPDFLineOpt() *PDFLineOpt {
@@ -51,17 +52,24 @@ func (opt *PDFLineOpt) CapRound() *PDFLineOpt {
 	return opt
 }
 
+func (opt *PDFLineOpt) Debug(v bool) *PDFLineOpt {
+	opt.debug = &v
+	return opt
+}
+
 func (b *WPDFBuilder) Line(x1 float64, y1 float64, x2 float64, y2 float64, opts ...*PDFLineOpt) {
 	var lineWidth *float64
 	var drawColor *PDFColor
 	var alphaOverride *dataext.Tuple[float64, PDFBlendMode]
 	capStyle := CapButt
+	debug := b.debug
 
 	for _, opt := range opts {
 		lineWidth = langext.CoalesceOpt(opt.lineWidth, lineWidth)
 		drawColor = langext.CoalesceOpt(opt.drawColor, drawColor)
 		alphaOverride = langext.CoalesceOpt(opt.alpha, alphaOverride)
 		capStyle = langext.Coalesce(opt.capStyle, capStyle)
+		debug = langext.Coalesce(opt.debug, debug)
 	}
 
 	if lineWidth != nil {