Mercurial > gemma
view pkg/octree/tree.go @ 2006:35acb7f9ae0c
Do anything else before expectedly failing role creation
Creating roles during database setup expectedly fails in case there
already is another gemma database in the cluster. Doing it at the end
of the transaction ensures it does not hide errors in other commands
in the script.
In passing, add the default admin via the designated view to ensure it
will become a correctly set up application user.
author | Tom Gottfried <tom@intevation.de> |
---|---|
date | Thu, 24 Jan 2019 17:23:43 +0100 |
parents | fe1aa62195c2 |
children | a1e751c08c56 |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package octree import ( "math" ) // Tree is an Octree holding triangles. type Tree struct { // EPSG is the projection. EPSG uint32 vertices []Vertex triangles [][]int32 index []int32 // Min is the lower left corner of the bbox. Min Vertex // Max is the upper right corner of the bbox. Max Vertex } var scale = [4][4]float64{ {0.0, 0.0, 0.5, 0.5}, {0.5, 0.0, 1.0, 0.5}, {0.0, 0.5, 0.5, 1.0}, {0.5, 0.5, 1.0, 1.0}, } // Vertical does a vertical cross cut from (x1, y1) to (x2, y2). func (ot *Tree) Vertical(x1, y1, x2, y2 float64, fn func(*Triangle)) { box := Box2D{ X1: math.Min(x1, x2), Y1: math.Min(y1, y2), X2: math.Max(x1, x2), Y2: math.Max(y1, y2), } // out of bounding box if box.X2 < ot.Min.X || ot.Max.X < box.X1 || box.Y2 < ot.Min.Y || ot.Max.Y < box.Y1 { return } line := NewPlane2D(x1, y1, x2, y2) type frame struct { pos int32 Box2D } dupes := map[int32]struct{}{} all := Box2D{ot.Min.X, ot.Min.Y, ot.Max.X, ot.Max.Y} //log.Printf("area: %f\n", (box.x2-box.x1)*(box.y2-box.y1)) //log.Printf("all: %f\n", (all.x2-all.x1)*(all.y2-all.y1)) stack := []frame{{1, all}} for len(stack) > 0 { top := stack[len(stack)-1] stack = stack[:len(stack)-1] if top.pos > 0 { // node if index := ot.index[top.pos:]; len(index) > 7 { for i := 0; i < 4; i++ { a := index[i] b := index[i+4] if a == 0 && b == 0 { continue } dx := top.X2 - top.X1 dy := top.Y2 - top.Y1 nbox := Box2D{ dx*scale[i][0] + top.X1, dy*scale[i][1] + top.Y1, dx*scale[i][2] + top.X1, dy*scale[i][3] + top.Y1, } if nbox.Intersects(box) && nbox.IntersectsPlane(line) { if a != 0 { stack = append(stack, frame{a, nbox}) } if b != 0 { stack = append(stack, frame{b, nbox}) } } } } } else { // leaf pos := -top.pos - 1 n := ot.index[pos] indices := ot.index[pos+1 : pos+1+n] for _, idx := range indices { if _, found := dupes[idx]; found { continue } tri := ot.triangles[idx] t := Triangle{ ot.vertices[tri[0]], ot.vertices[tri[1]], ot.vertices[tri[2]], } v0 := line.Eval(t[0].X, t[0].Y) v1 := line.Eval(t[1].X, t[1].Y) v2 := line.Eval(t[2].X, t[2].Y) if onPlane(v0) || onPlane(v1) || onPlane(v2) || sides(sides(sides(0, v0), v1), v2) == 3 { fn(&t) } dupes[idx] = struct{}{} } } } } // Horizontal does a horizontal cross cut. func (ot *Tree) Horizontal(h float64, fn func(*Triangle)) { if h < ot.Min.Z || ot.Max.Z < h { return } type frame struct { pos int32 min float64 max float64 } dupes := map[int32]struct{}{} stack := []frame{{1, ot.Min.Z, ot.Max.Z}} for len(stack) > 0 { top := stack[len(stack)-1] stack = stack[:len(stack)-1] pos := top.pos if pos == 0 { continue } min, max := top.min, top.max if pos > 0 { // node if mid := (max-min)*0.5 + min; h >= mid { pos += 4 // nodes with z-bit set min = mid } else { max = mid } if index := ot.index[pos:]; len(index) > 3 { stack = append(stack, frame{index[0], min, max}, frame{index[1], min, max}, frame{index[2], min, max}, frame{index[3], min, max}) } } else { // leaf pos = -pos - 1 n := ot.index[pos] //log.Printf("%d %d %d\n", pos, n, len(ot.index)) indices := ot.index[pos+1 : pos+1+n] for _, idx := range indices { if _, found := dupes[idx]; found { continue } tri := ot.triangles[idx] t := Triangle{ ot.vertices[tri[0]], ot.vertices[tri[1]], ot.vertices[tri[2]], } 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(&t) } } } } }