Source file src/oss.terrastruct.com/d2/lib/textmeasure/rect.go

Documentation: oss.terrastruct.com/d2/lib/textmeasure

     1  package textmeasure
     2  
     3  import (
     4  	"math"
     5  
     6  	"oss.terrastruct.com/d2/lib/geo"
     7  )
     8  
     9  type rect struct {
    10  	tl *geo.Point
    11  	br *geo.Point
    12  }
    13  
    14  func newRect() *rect {
    15  	return &rect{
    16  		tl: geo.NewPoint(0, 0),
    17  		br: geo.NewPoint(0, 0),
    18  	}
    19  }
    20  
    21  func (r rect) w() float64 {
    22  	return r.br.X - r.tl.X
    23  }
    24  
    25  func (r rect) h() float64 {
    26  	return r.br.Y - r.tl.Y
    27  }
    28  
    29  // norm returns the Rect in normal form, such that Max is component-wise greater or equal than Min.
    30  func (r rect) norm() *rect {
    31  	return &rect{
    32  		tl: geo.NewPoint(
    33  			math.Min(r.tl.X, r.br.X),
    34  			math.Min(r.tl.Y, r.br.Y),
    35  		),
    36  		br: geo.NewPoint(
    37  			math.Max(r.tl.X, r.br.X),
    38  			math.Max(r.tl.Y, r.br.Y),
    39  		),
    40  	}
    41  }
    42  
    43  func (r1 *rect) union(r2 *rect) *rect {
    44  	r := newRect()
    45  	r.tl.X = math.Min(r1.tl.X, r2.tl.X)
    46  	r.tl.Y = math.Min(r1.tl.Y, r2.tl.Y)
    47  	r.br.X = math.Max(r1.br.X, r2.br.X)
    48  	r.br.Y = math.Max(r1.br.Y, r2.br.Y)
    49  
    50  	return r
    51  }
    52  

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