Mercurial > gemma
comparison pkg/octree/vertex.go @ 3646:810b28f59b8b single-beam
Generate random points for second mesh.
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Wed, 12 Jun 2019 17:30:20 +0200 |
| parents | 2a4216c81e7b |
| children | 01ce3ba9b0d0 |
comparison
equal
deleted
inserted
replaced
| 3640:10471aa73ad8 | 3646:810b28f59b8b |
|---|---|
| 430 Y2: max.Y, | 430 Y2: max.Y, |
| 431 } | 431 } |
| 432 } | 432 } |
| 433 | 433 |
| 434 func (ls LineStringZ) Area() float64 { | 434 func (ls LineStringZ) Area() float64 { |
| 435 var result float64 | 435 return polygonArea(ls) |
| 436 for i := 0; i < len(ls); i += 3 { | |
| 437 p0 := ls[i+0] | |
| 438 p1 := ls[i+1] | |
| 439 p2 := ls[i+2] | |
| 440 result += area(p0, p1, p2) | |
| 441 } | |
| 442 return result / 2 | |
| 443 } | 436 } |
| 444 | 437 |
| 445 func (ls LineStringZ) Reverse() { | 438 func (ls LineStringZ) Reverse() { |
| 446 for i, j := 0, len(ls)-1; i < j; i, j = i+1, j-1 { | 439 for i, j := 0, len(ls)-1; i < j; i, j = i+1, j-1 { |
| 447 ls[i], ls[j] = ls[j], ls[i] | 440 ls[i], ls[j] = ls[j], ls[i] |