Mercurial > gemma
diff cmd/octree2contour/loader.go @ 687:be90ab542aa7 octree
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Thu, 20 Sep 2018 11:32:03 +0200 |
| parents | a8672ba9ebad |
| children | 9db4ae29ded9 |
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--- a/cmd/octree2contour/loader.go Thu Sep 20 00:13:47 2018 +0200 +++ b/cmd/octree2contour/loader.go Thu Sep 20 11:32:03 2018 +0200 @@ -129,7 +129,7 @@ return tree, nil } -func (ot *octree) horizontal(h float64, fn func([]int32)) { +func (ot *octree) horizontal(h float64, fn func(*triangle)) { type frame struct { pos int32 @@ -178,14 +178,16 @@ continue } tri := ot.triangles[idx] - v0 := ot.vertices[tri[0]] - v1 := ot.vertices[tri[1]] - v2 := ot.vertices[tri[2]] + t := triangle{ + ot.vertices[tri[0]], + ot.vertices[tri[1]], + ot.vertices[tri[2]], + } - if !(math.Min(v0.z, math.Min(v1.z, v2.z)) > h || - math.Max(v0.z, math.Max(v1.z, v2.z)) < h) { + if !(math.Min(t[0].z, math.Min(t[1].z, t[2].z)) > h || + math.Max(t[0].z, math.Max(t[1].z, t[2].z)) < h) { dupes[idx] = struct{}{} - fn(tri) + fn(&t) } } }