Mercurial > gemma

annotate pkg/mesh/node.go @ 5688:6281c18b109f sr-v2

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Finsh serializing v2 meshes.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 12 Feb 2024 02:27:41 +0100
parents f4abfd0ee8ad
children
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620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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1 // Copyright (C) 2018 Michael Fogleman
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2 //
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3 // Permission is hereby granted, free of charge, to any person obtaining
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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4 // a copy of this software and associated documentation files (the "Software"),
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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5 // to deal in the Software without restriction, including without limitation
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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6 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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7 // and/or sell copies of the Software, and to permit persons to whom the
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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8 // Software is furnished to do so, subject to the following conditions:
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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9 //
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10 // The above copyright notice and this permission notice shall be included
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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11 // in all copies or substantial portions of the Software.
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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12 //
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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14 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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16 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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19
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f4abfd0ee8ad Renamed octree package to mesh as there is no octree any more.
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20 package mesh
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21
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22 type node struct {
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23 i int32
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24 t int32
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25 prev *node
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26 next *node
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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27 }
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28
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29 func newNode(nodes []node, i int32, prev *node) *node {
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30 n := &nodes[i]
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31 n.i = i
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32 if prev == nil {
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33 n.prev = n
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34 n.next = n
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35 } else {
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36 n.next = prev.next
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37 n.prev = prev
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38 prev.next.prev = n
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39 prev.next = n
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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40 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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41 return n
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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42 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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43
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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44 func (n *node) remove() *node {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model.
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45 n.prev.next = n.next
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46 n.next.prev = n.prev
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47 n.i = -1
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48 return n.prev
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49 }