Add unit tests for points

pkg/path/path.go

@@ -20,7 +20,7 @@ func (p *Polygon) Through() []point.Point {
 
 // NewPolygon returns a new [Polygon].
 func NewPolygon(points []point.Point, style Style, id util.ID) *Polygon {
-	return &Polygon{points: points, style: style}
+	return &Polygon{points: points, style: style, id: id}
 }
 
 // WithStyle updates the style of the Polygon.

pkg/point/absolute_point.go

@@ -19,7 +19,7 @@ type AbsolutePoint struct {
 
 // Matrix calculates and returns the [canvas.Matrix] of a point.
 func (a *AbsolutePoint) Matrix() canvas.Matrix {
-	return canvas.Identity.Translate(a.position.Vector.Values()).Rotate(a.position.Rotation)
+	return canvas.Identity.Translate(a.position.Vector.Values()).Rotate(a.position.RotationD())
 }
 
 // ID returns the point ID.
@@ -69,7 +69,7 @@ func (a *AbsolutePoint) SetDraw() {
 
 // UnsetDraw indicates that the point should not be drawn.
 func (a *AbsolutePoint) UnsetDraw() {
-	a.draw = true
+	a.draw = false
 }
 
 // Hide returns if the point must remain hidden.

pkg/position/position.go

@@ -22,6 +22,10 @@ func (p Position) Add(q Position) Position {
 	}
 }
 
+func (p Position) RotationD() float64 {
+	return p.Rotation*180/math.Pi
+}
+
 // Distance returns the distance between two positions.
 func (p Position) Distance(q Position) float64 {
 	return p.Vector.Distance(q.Vector)