Mercurial > gemma

annotate pkg/mesh/plane2d_test.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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rev   line source
1017
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
4827
f4abfd0ee8ad Renamed octree package to mesh as there is no octree any more.
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14 package mesh
778
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15
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16 import (
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17 "math"
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18 "testing"
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19 )
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20
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21 func TestIntersection(t *testing.T) {
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22
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23 table := []struct {
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24 a [4]float64
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25 b [4]float64
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26 intersects bool
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27 x, y float64
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28 }{
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29 {[4]float64{-1, -1, 1, 1}, [4]float64{-1, 1, 1, -1}, true, 0, 0},
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30 {[4]float64{0, 0, 1, 1}, [4]float64{0, 1, 1, 0}, true, 0.5, 0.5},
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31 {[4]float64{0, 0, 1, 0}, [4]float64{0, 1, 1, 1}, false, 0, 0},
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32 }
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33
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34 for _, e := range table {
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35 p1 := NewPlane2D(e.a[0], e.a[1], e.a[2], e.a[3])
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36 p2 := NewPlane2D(e.b[0], e.b[1], e.b[2], e.b[3])
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37 x, y, intersects := p1.Intersection(p2)
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38 if intersects != e.intersects {
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39 t.Fatalf("Have %t want %t\n", intersects, e.intersects)
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40 }
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41 if e.intersects {
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42 if math.Abs(e.x-x) > epsPlane || math.Abs(e.y-y) > epsPlane {
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43 t.Fatalf("Have (%f, %f)t want (%f, %f)\n", x, y, e.x, e.y)
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44 }
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45 }
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46 }
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47 }