Mercurial > gemma

comparison pkg/octree/vertex.go @ 3770:71164b817d6e simplify-sounding-results

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Calculate distance from planes.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 25 Jun 2019 21:04:16 +0200
parents a6c671abbc35
children 4233570de212
comparison
equal deleted inserted replaced
3769:6838526df94c 3770:71164b817d6e
106 } 106 }
107 107
108 func (p Plane3D) Z(x, y float64) float64 { 108 func (p Plane3D) Z(x, y float64) float64 {
109 // p.A*x + p.B*y + p.C*z + p.D = 0 109 // p.A*x + p.B*y + p.C*z + p.D = 0
110 return -(p.A*x + p.B*y + p.D) / p.C 110 return -(p.A*x + p.B*y + p.D) / p.C
111 }
112
113 func (p Plane3D) Eval(v Vertex) float64 {
114 return p.A*v.X + p.B*v.Y + p.C*v.Z + p.D
111 } 115 }
112 116
113 func (v Vertex) Normalize() Vertex { 117 func (v Vertex) Normalize() Vertex {
114 s := 1 / v.Length() 118 s := 1 / v.Length()
115 return Vertex{ 119 return Vertex{