package draw

import (
	"fmt"

	"gitee.com/coodder/unipdf/internal/transform"
)

// Point represents a two-dimensional point.
type Point struct {
	X float64
	Y float64
}

// NewPoint returns a new point with the coordinates x, y.
func NewPoint(x, y float64) Point {
	return Point{X: x, Y: y}
}

// Add shifts the coordinates of the point with dx, dy and returns the result.
func (p Point) Add(dx, dy float64) Point {
	p.X += dx
	p.Y += dy
	return p
}

// AddVector adds vector to a point.
func (p Point) AddVector(v Vector) Point {
	p.X += v.Dx
	p.Y += v.Dy
	return p
}

// Rotate returns a new Point at `p` rotated by `theta` degrees.
func (p Point) Rotate(theta float64) Point {
	r := transform.NewPoint(p.X, p.Y).Rotate(theta)
	return NewPoint(r.X, r.Y)
}

func (p Point) String() string {
	return fmt.Sprintf("(%.1f,%.1f)", p.X, p.Y)
}