From 59be18c830a43ecb73725b809d7f2643bb3db37a Mon Sep 17 00:00:00 2001
From: greg maillet <gregoire.maillet@ign.fr>
Date: Thu, 28 Oct 2021 12:03:48 +0200
Subject: [PATCH] add unit test for vertical faces

---
 test/data/geojson/vertical.geojson.json | 42 +++++++++++++++++++++++++
 test/unit/feature2mesh.js               | 14 ++++++++-
 2 files changed, 55 insertions(+), 1 deletion(-)
 create mode 100644 test/data/geojson/vertical.geojson.json

diff --git a/test/data/geojson/vertical.geojson.json b/test/data/geojson/vertical.geojson.json
new file mode 100644
index 0000000000..f278cd79db
--- /dev/null
+++ b/test/data/geojson/vertical.geojson.json
@@ -0,0 +1,42 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [
+              0,
+              0,
+              0
+            ],
+            [
+              0,
+              0,
+              1
+            ],
+            [
+              0,
+              1,
+              1
+            ],
+            [
+              0,
+              1,
+              0
+            ],
+            [
+              0,
+              0,
+              0
+            ]
+          ]
+        ]
+      },
+      "properties": {
+      }
+    }
+  ]
+}
diff --git a/test/unit/feature2mesh.js b/test/unit/feature2mesh.js
index 3691c37f08..2d46a0549a 100644
--- a/test/unit/feature2mesh.js
+++ b/test/unit/feature2mesh.js
@@ -6,6 +6,8 @@ import Feature2Mesh from 'Converter/Feature2Mesh';
 
 const geojson = require('../data/geojson/holes.geojson.json');
 const geojson2 = require('../data/geojson/simple.geojson.json');
+const geojson3 = require('../data/geojson/vertical.geojson.json');
+
 
 proj4.defs('EPSG:3946',
     '+proj=lcc +lat_1=45.25 +lat_2=46.75 +lat_0=46 +lon_0=3 +x_0=1700000 +y_0=5200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs');
@@ -29,6 +31,7 @@ function computeAreaOfMesh(mesh) {
 describe('Feature2Mesh', function () {
     const parsed = GeoJsonParser.parse(geojson, { in: { crs: 'EPSG:3946' }, out: { crs: 'EPSG:3946', buildExtent: true, mergeFeatures: false, structure: '3d' } });
     const parsed2 = GeoJsonParser.parse(geojson2, { in: { crs: 'EPSG:3946' }, out: { crs: 'EPSG:3946', buildExtent: true, mergeFeatures: false, structure: '3d' } });
+    const parsed3 = GeoJsonParser.parse(geojson3, { in: { crs: 'EPSG:3946' }, out: { crs: 'EPSG:3946', buildExtent: true, mergeFeatures: false, structure: '3d' } });
 
     it('rect mesh area should match geometry extent', () =>
         parsed.then((collection) => {
@@ -43,7 +46,6 @@ describe('Feature2Mesh', function () {
     it('square mesh area should match geometry extent minus holes', () =>
         parsed.then((collection) => {
             const mesh = Feature2Mesh.convert()(collection);
-
             const noHoleArea = computeAreaOfMesh(mesh.children[0]);
             const holeArea = computeAreaOfMesh(mesh.children[1]);
             const meshWithHoleArea = computeAreaOfMesh(mesh.children[2]);
@@ -53,6 +55,16 @@ describe('Feature2Mesh', function () {
                 meshWithHoleArea);
         }));
 
+    it('vertical polygon triangulation', () =>
+        parsed3.then((collection) => {
+            const mesh = Feature2Mesh.convert()(collection);
+            const geom = mesh.children[0].geometry;
+            assert.equal(
+                geom.index.count,
+                6,
+            );
+        }));
+
     it('convert points, lines and mesh', () =>
         parsed2.then((collection) => {
             const mesh = Feature2Mesh.convert()(collection);