glTFへの属性情報付与

demo/cesium/examples/ext_mesh_features/test.gltf

@@ -0,0 +1,87 @@
+{
+	"extensionsUsed": ["EXT_mesh_features"],
+	"accessors": [
+		{
+			"bufferView": 0,
+			"componentType": 5126,
+			"count": 22562,
+			"type": "VEC3",
+			"max": [527.1293573356234, 387.3888158304617, 542.6486890139058],
+			"min": [-527.1293573356234, -387.388815829996, -542.6486890139058]
+		},
+		{
+			"bufferView": 1,
+			"componentType": 5125,
+			"count": 115440,
+			"type": "SCALAR"
+		},
+		{
+			"bufferView": 2,
+			"componentType": 5125,
+			"count": 22562,
+			"type": "SCALAR"
+		}
+	],
+	"asset": {
+		"generator": "nusamai-gltf",
+		"version": "2.0"
+	},
+	"bufferViews": [
+		{
+			"buffer": 0,
+			"byteLength": 270744,
+			"target": 34962
+		},
+		{
+			"buffer": 0,
+			"byteOffset": 270744,
+			"byteLength": 461760,
+			"target": 34963
+		},
+		{
+			"buffer": 0,
+			"byteOffset": 732504,
+			"byteLength": 90248,
+			"target": 34962
+		}
+	],
+	"buffers": [
+		{
+			"byteLength": 822752
+		}
+	],
+	"meshes": [
+		{
+			"primitives": [
+				{
+					"attributes": {
+						"_FEATURE_ID_0": 2,
+						"POSITION": 0
+					},
+					"indices": 1,
+					"extensions": {
+						"EXT_mesh_features": {
+							"featureIds": [
+								{
+									"featureCount": 22562,
+									"attribute": 0
+								}
+							]
+						}
+					}
+				}
+			]
+		}
+	],
+	"nodes": [
+		{
+			"mesh": 0,
+			"translation": [-3929620.269123388, 3649625.761440213, -3439457.322811205]
+		}
+	],
+	"scenes": [
+		{
+			"nodes": [0]
+		}
+	]
+}