Add a camera unittest.

code/glTF2/glTF2Importer.cpp

@@ -705,9 +705,11 @@ void glTF2Importer::ImportCameras(glTF2::Asset& r)
             aicam->mHorizontalFOV = cam.cameraProperties.perspective.yfov * aicam->mAspect;
             aicam->mClipPlaneFar  = cam.cameraProperties.perspective.zfar;
             aicam->mClipPlaneNear = cam.cameraProperties.perspective.znear;
-        }
-        else {
-            // assimp does not support orthographic cameras
+        } else {
+            aicam->mClipPlaneFar = cam.ortographic.zfar;
+            aicam->mClipPlaneNear = cam.ortographic.znear;
+            aicam->mHorizontalFOV = 0.0;
+            aicam->mAspect = cam.ortographic.xmag / cam.ortographic.ymag;
         }
     }
 }

test/models/glTF2/cameras/Cameras.gltf

@@ -0,0 +1,98 @@
+{
+  "scenes" : [
+    {
+      "nodes" : [ 0, 1, 2 ]
+    }
+  ],
+  "nodes" : [
+    {
+      "rotation" : [ -0.383, 0.0, 0.0, 0.92375 ],
+      "mesh" : 0
+    },
+    {
+      "translation" : [ 0.5, 0.5, 3.0 ],
+      "camera" : 0
+    },
+    {
+      "translation" : [ 0.5, 0.5, 3.0 ],
+      "camera" : 1
+    }
+  ],
+  
+  "cameras" : [
+    {
+      "type": "perspective",
+      "perspective": {
+        "aspectRatio": 1.0,
+        "yfov": 0.7,
+        "zfar": 100,
+        "znear": 0.01
+      }
+    },
+    {
+      "type": "orthographic",
+      "orthographic": {
+        "xmag": 1.0,
+        "ymag": 1.0,
+        "zfar": 100,
+        "znear": 0.01
+      }
+    }
+  ],
+  
+  "meshes" : [
+    {
+      "primitives" : [ {
+        "attributes" : {
+          "POSITION" : 1
+        },
+        "indices" : 0
+      } ]
+    }
+  ],
+
+  "buffers" : [
+    {
+      "uri" : "simpleSquare.bin",
+      "byteLength" : 60
+    }
+  ],
+  "bufferViews" : [
+    {
+      "buffer" : 0,
+      "byteOffset" : 0,
+      "byteLength" : 12,
+      "target" : 34963
+    },
+    {
+      "buffer" : 0,
+      "byteOffset" : 12,
+      "byteLength" : 48,
+      "target" : 34962
+    }
+  ],
+  "accessors" : [
+    {
+      "bufferView" : 0,
+      "byteOffset" : 0,
+      "componentType" : 5123,
+      "count" : 6,
+      "type" : "SCALAR",
+      "max" : [ 3 ],
+      "min" : [ 0 ]
+    },
+    {
+      "bufferView" : 1,
+      "byteOffset" : 0,
+      "componentType" : 5126,
+      "count" : 4,
+      "type" : "VEC3",
+      "max" : [ 1.0, 1.0, 0.0 ],
+      "min" : [ 0.0, 0.0, 0.0 ]
+    }
+  ],
+  
+  "asset" : {
+    "version" : "2.0"
+  }
+}

test/unit/utglTF2ImportExport.cpp

@@ -375,6 +375,13 @@ TEST_F( utglTF2ImportExport, bug_import_simple_skin ) {
     EXPECT_NE( nullptr, scene );
 }
 
+TEST_F(utglTF2ImportExport, import_cameras) {
+    Assimp::Importer importer;
+    const aiScene* scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/cameras/Cameras.gltf",
+        aiProcess_ValidateDataStructure);
+    EXPECT_NE(nullptr, scene);
+}
+
 #ifndef ASSIMP_BUILD_NO_EXPORT
 TEST_F( utglTF2ImportExport, exportglTF2FromFileTest ) {
     EXPECT_TRUE( exporterTest() );