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add box.BoundingRect(π)

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This commit is contained in:
Josh Deprez 2021-09-15 12:03:59 +10:00
parent e6afa2de50
commit af13a856e8
1 changed files with 13 additions and 2 deletions
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15
geom/box.go
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@ -71,6 +71,15 @@ func (b Box) Canon() Box {
return b
}
// BoundingRect returns an image.Rectangle that bounds the box if it were
// projected, i.e. Rectangle{Min: π(Min), Max: π(Max)}.
func (b Box) BoundingRect(π IntProjection) image.Rectangle {
return image.Rectangle{
Min: π.Project(b.Min),
Max: π.Project(b.Max),
}
}
// Back returns an image.Rectangle representing the back of the box, using
// the given projection π.
func (b Box) Back(π IntProjection) image.Rectangle {
@ -91,7 +100,8 @@ func (b Box) Front(π IntProjection) image.Rectangle {
}
}
// XY returns the image.Rectangle representing the box if we forgot about Z.
// XY returns the image.Rectangle representing the box if we forgot about Z
// (a vertical cross-section).
func (b Box) XY() image.Rectangle {
return image.Rectangle{
Min: b.Min.XY(),
@ -99,7 +109,8 @@ func (b Box) XY() image.Rectangle {
}
}
// XZ returns the image.Rectangle representing the box if we forgot about Y.
// XZ returns the image.Rectangle representing the box if we forgot about Y
// (the horizontal cross-section).
func (b Box) XZ() image.Rectangle {
return image.Rectangle{
Min: b.Min.XZ(),