Mercurial > gemma
diff pkg/octree/vertex.go @ 4768:a2f16bbcc846 direct-diff
Morph differences: Directly raster A and subtract B as a raster.
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Mon, 21 Oct 2019 02:01:56 +0200 |
| parents | c91e759007da |
| children |
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--- a/pkg/octree/vertex.go Sat Oct 19 23:07:59 2019 +0200 +++ b/pkg/octree/vertex.go Mon Oct 21 02:01:56 2019 +0200 @@ -113,6 +113,16 @@ a.Y1 >= b.Y1 && a.Y2 <= b.Y2 } +func (a Box2D) Size() (float64, float64) { + return a.X2 - a.X1, a.Y2 - a.Y1 +} + +func (a Box2D) Empty() bool { + const eps = 0.0000001 + return math.Abs(a.X2-a.X1) < eps && + math.Abs(a.Y2-a.Y1) < eps +} + func (p Plane3D) Z(x, y float64) float64 { // p.A*x + p.B*y + p.C*z + p.D = 0 return -(p.A*x + p.B*y + p.D) / p.C