private Dictionary <string, List <int> > GetTriangleLists(CityModel cityModel)
{
Dictionary <string, List <int> > triangleList = new Dictionary <string, List <int> >();
// string = objectID
// List<int> = triangles
string cityObjectType = "";
foreach (JSONNode cityObject in cityModel.cityjsonNode["CityObjects"])
{
cityObjectType = cityObject["type"];
// Skip non-Buildings
string objectID = GetObjectID("identificatie", cityObject);
if (objectID == "")
{
objectID = GetObjectID("name", cityObject);
}
if (triangleList.ContainsKey(objectID) == true)
{
triangleList[objectID].AddRange(ReadTriangles(cityObject));
}
else
{
triangleList.Add(objectID, ReadTriangles(cityObject));
}
}
return(triangleList);
}
public List <Vector3RD> GetTriangleListRD(CityModel cityModel, string cityObjectType, string bgtProperty, List <string> bgtValues, bool include)
{
List <Vector3RD> vertsRD = GetVertsRD(cityModel);
List <Vector3RD> triangleList = new List <Vector3RD>();
List <int> triangles = new List <int>();
bool Include;
foreach (JSONNode cityObject in cityModel.cityjsonNode["CityObjects"])
{
Include = !include;
if (cityObject["type"] == cityObjectType)
{
if (bgtValues == null)
{
Include = !Include;
}
else if (bgtValues.Contains(cityObject["attributes"][bgtProperty]))
{
Include = !Include;
}
if (Include)
{
triangles.AddRange(ReadTriangles(cityObject));
}
}
}
for (int i = 0; i < triangles.Count; i++)
{
triangleList.Add(vertsRD[triangles[i]]);
}
return(triangleList);
}
public GameObject CreateMesh(CityModel cityModel, Vector3RD origin)
{
GameObject container = new GameObject();
//Terraindata terrainData = container.AddComponent<Terraindata>();
verts = GetVerts(cityModel, origin);
List <Vector3> newVerts = new List <Vector3>();
triangleLists = GetTriangleLists(cityModel);
Vector2Int textureSize = ObjectIDMapping.GetTextureSize(triangleLists.Count);
Debug.Log(textureSize);
Mesh mesh = new Mesh();
List <int> triangles = new List <int>();
List <string> objectIDs = new List <string>();
List <Vector2> uvs = new List <Vector2>();
List <int> vectorIDs = new List <int>();
List <int> triangleCount = new List <int>();
int objectIDNumber = 0;
int vertexCounter = 0;
foreach (var item in triangleLists)
{
vertexCounter = 0;
Vector2 uv = ObjectIDMapping.GetUV(objectIDNumber, textureSize);
foreach (int vertexIndex in item.Value)
{
newVerts.Add(verts[vertexIndex]);
uvs.Add(uv);
vectorIDs.Add(objectIDNumber);
triangles.Add(newVerts.Count - 1);
vertexCounter++;
}
triangleCount.Add(vertexCounter);
objectIDs.Add(item.Key);
objectIDNumber++;
}
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
mesh.vertices = newVerts.ToArray();
mesh.triangles = triangles.ToArray();
mesh.uv = uvs.ToArray();
//mesh.RecalculateNormals();
//mesh.Optimize();
container.AddComponent <MeshFilter>().mesh = mesh;
ObjectMapping objectMapping = container.AddComponent <ObjectMapping>();
objectMapping.vectorIDs = vectorIDs;
objectMapping.BagID = objectIDs;
objectMapping.TriangleCount = triangleCount;
return(container);
}
private Dictionary <string, List <int> > GetTriangleLists(CityModel cityModel)
{
Dictionary <string, List <int> > triangleList = new Dictionary <string, List <int> >();
triangleList.Add("LandUse", new List <int>());
triangleList.Add("PlantCover", new List <int>());
triangleList.Add("Bridge", new List <int>());
triangleList.Add("Road", new List <int>());
triangleList.Add("Railway", new List <int>());
triangleList.Add("TransportSquare", new List <int>());
triangleList.Add("WaterBody", new List <int>());
triangleList.Add("GenericCityObject", new List <int>());
triangleList.Add("Building", new List <int>());
string cityObjectType = "";
foreach (JSONNode cityObject in cityModel.cityjsonNode["CityObjects"])
{
cityObjectType = cityObject["type"];
// Skip Buildings
//if (cityObjectType =="Building")
//{
// continue;
//}
// Skip Bridges
//if (cityObjectType == "Bridge")
//{
// continue;
//}
if (cityObjectType == "LandUse")
{
string property = cityObject["attributes"]["bgt_fysiekvoorkomen"].Value;
property = cityObject["attributes"]["bgt_functie"].Value;
if (fysiek_voorkomen.Contains(property) == false)
{
fysiek_voorkomen.Add(property);
}
}
if (triangleList.ContainsKey(cityObjectType) == true)
{
triangleList[cityObjectType].AddRange(ReadTriangles(cityObject));
}
else
{
Debug.Log("cityObject: " + cityObjectType);
}
}
return(triangleList);
}
static private List <Vector3RD> GetVertsRD(CityModel cityModel)
{
List <Vector3RD> vertsRD = new List <Vector3RD>();
Vector3RD vertexCoordinate = new Vector3RD();
foreach (Vector3Double vertex in cityModel.vertices)
{
vertexCoordinate.x = vertex.x;
vertexCoordinate.y = vertex.y;
vertexCoordinate.z = vertex.z;
vertsRD.Add(vertexCoordinate);
}
return(vertsRD);
}
private List <Vector3RD> GetVertsRD(CityModel cityModel)
{
List <Vector3RD> vertsRD = new List <Vector3RD>();
Vector3 vertexCoordinate = new Vector3();
foreach (Vector3Double vertex in cityModel.vertices)
{
vertexCoordinate.x = (float)vertex.x;
vertexCoordinate.y = (float)vertex.z;
vertexCoordinate.z = (float)vertex.y;
vertsRD.Add(CoordConvert.UnitytoRD(vertexCoordinate));
}
return(vertsRD);
}
private List <Vector3> GetVerts(CityModel cityModel, Vector3RD origin)
{
List <Vector3> verts = new List <Vector3>();
Vector3 unityOrigin = CoordConvert.RDtoUnity(origin);
Vector3RD vertexCoordinate = new Vector3RD();
foreach (Vector3Double vertex in cityModel.vertices)
{
vertexCoordinate.x = vertex.x;
vertexCoordinate.y = vertex.y;
vertexCoordinate.z = vertex.z;
verts.Add(CoordConvert.RDtoUnity(vertexCoordinate) - unityOrigin);
}
return(verts);
}
public GameObject CreateMesh(CityModel cityModel, Vector3RD origin)
{
GameObject container = new GameObject();
//Terraindata terrainData = container.AddComponent<Terraindata>();
verts = GetVerts(cityModel, origin);
triangleLists = GetTriangleLists(cityModel);
Mesh mesh = new Mesh();
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
mesh.SetVertices(verts.ToArray());
mesh.subMeshCount = triangleLists.Count;
int submeshnumber = 0;
foreach (var item in triangleLists)
{
//terrainData.terrainTypes.Add(item.Key);
//if (submeshnumber==0 || submeshnumber==1)
//{
mesh.SetTriangles(item.Value.ToArray(), submeshnumber);
//}
submeshnumber++;
}
mesh.RecalculateNormals();
mesh.Optimize();
container.AddComponent <MeshFilter>().mesh = mesh;
container.AddComponent <MeshRenderer>().sharedMaterials = new Material[submeshnumber];
return(container);
}
static void ImportSingle(double OriginX, double OriginY)
{
double originX = OriginX;
double originY = OriginY;
string basefilepath = "E:/TiledData/Terrain1000x1000/";
string jsonfilename = originX.ToString() + "-" + originY.ToString() + ".json";
float tileSize = 1000;
string filepath = basefilepath;
Debug.Log(filepath);
if (File.Exists(filepath + jsonfilename))
{
CityModel cm = new CityModel(filepath, jsonfilename);
//type voetpad
Mesh RoadsvoetpadMesh = CreateCityObjectMesh(cm, "Road", originX, originY, tileSize, "bgt_functie", new List <string> {
"voetpad", "voetgangersgebied", "ruiterpad", "voetpad op trap"
}, true);
Mesh LandUseVoetpadMesh = CreateCityObjectMesh(cm, "LandUse", originX, originY, tileSize, "bgt_fysiekvoorkomen", new List <string> {
"open verharding"
}, true);
LandUseVoetpadMesh = SimplifyMesh(LandUseVoetpadMesh, 0.05f);
//combine meshes of type "voetpad"
CombineInstance[] voetpadcombi = new CombineInstance[2];
voetpadcombi[0].mesh = RoadsvoetpadMesh;
voetpadcombi[1].mesh = LandUseVoetpadMesh;
Mesh voetpadmesh = new Mesh();
voetpadmesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
voetpadmesh.CombineMeshes(voetpadcombi, true, false);
//type fietspad
Mesh fietspadMesh = CreateCityObjectMesh(cm, "Road", originX, originY, tileSize, "bgt_functie", new List <string> {
"fietspad"
}, true);
//type parkeervak
Mesh parkeervlakMesh = CreateCityObjectMesh(cm, "Road", originX, originY, tileSize, "bgt_functie", new List <string> {
"parkeervlak"
}, true);
//type spoorbaan
Mesh spoorbaanMesh = CreateCityObjectMesh(cm, "Road", originX, originY, tileSize, "bgt_functie", new List <string> {
"spoorbaan"
}, true);
//type woonerf
Mesh WoonerfMesh = CreateCityObjectMesh(cm, "Road", originX, originY, tileSize, "bgt_functie", new List <string> {
"transitie", "woonerf"
}, true);
// type weg
Mesh roadsMesh = CreateCityObjectMesh(cm, "Road", originX, originY, tileSize, "bgt_functie", new List <string> {
"fietspad", "parkeervlak", "ruiterpad", "spoorbaan", "voetgangersgebied", "voetpad", "voetpad op trap", "woonerf"
}, false);
Mesh LandUseVerhardMesh = CreateCityObjectMesh(cm, "LandUse", originX, originY, tileSize, "bgt_fysiekvoorkomen", new List <string> {
"gesloten verharding"
}, true);
LandUseVerhardMesh = SimplifyMesh(LandUseVerhardMesh, 0.05f);
// combine meshes of type "weg"
CombineInstance[] wegcombi = new CombineInstance[2];
wegcombi[0].mesh = roadsMesh;
wegcombi[1].mesh = LandUseVerhardMesh;
Mesh wegmesh = new Mesh();
wegmesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
wegmesh.CombineMeshes(wegcombi, true, false);
// type groen
Mesh plantcoverMesh = CreateCityObjectMesh(cm, "PlantCover", originX, originY, tileSize, "bgt_fysiekvoorkomen", new List <string> {
"alles"
}, false);
Mesh LanduseGroenMesh = CreateCityObjectMesh(cm, "LandUse", originX, originY, tileSize, "bgt_fysiekvoorkomen", new List <string> {
"groenvoorziening"
}, true);
LanduseGroenMesh = SimplifyMesh(LanduseGroenMesh, 0.05f);
//combine meshes of type "groen"
CombineInstance[] groencombi = new CombineInstance[2];
groencombi[0].mesh = plantcoverMesh;
groencombi[1].mesh = LanduseGroenMesh;
Mesh groenMesh = new Mesh();
groenMesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
groenMesh.CombineMeshes(groencombi, true, false);
//type erf
Mesh erfMesh = CreateCityObjectMesh(cm, "LandUse", originX, originY, tileSize, "bgt_fysiekvoorkomen", new List <string> {
"erf"
}, true);
erfMesh = SimplifyMesh(erfMesh, 0.05f);
//type onverhard
Mesh LandUseMesh = CreateCityObjectMesh(cm, "LandUse", originX, originY, tileSize, "bgt_fysiekvoorkomen", new List <string> {
"erf", "groenvoorziening", "gesloten verharding", "open verharding"
}, false);
LandUseMesh = SimplifyMesh(LandUseMesh, 0.05f);
Mesh genericCityObjectMesh = CreateCityObjectMesh(cm, "GenericCityObject", originX, originY, tileSize, "bgt_type", null, true);
Mesh waterBodyMesh = CreateCityObjectMesh(cm, "WaterBody", originX, originY, tileSize, "bgt_type", null, true);
Mesh bridgeMesh = CreateCityObjectMesh(cm, "Bridge", originX, originY, tileSize, "bgt_type", null, true);
//create LOD1 Mesh
CombineInstance[] combi = new CombineInstance[12];
combi[0].mesh = voetpadmesh; //
combi[1].mesh = fietspadMesh; //
combi[2].mesh = parkeervlakMesh; //
combi[3].mesh = wegmesh; //
combi[4].mesh = groenMesh; //
combi[5].mesh = erfMesh; //
combi[6].mesh = LandUseMesh; //
combi[7].mesh = spoorbaanMesh; //
combi[8].mesh = WoonerfMesh; //
combi[9].mesh = genericCityObjectMesh;
combi[10].mesh = bridgeMesh;
combi[11].mesh = waterBodyMesh;
;
Mesh lod1Mesh = new Mesh();
lod1Mesh.CombineMeshes(combi, false, false);
lod1Mesh.uv2 = RDuv2(lod1Mesh.vertices, CoordConvert.RDtoUnity(new Vector3RD(originX, originY, 0)), tileSize);
Physics.BakeMesh(lod1Mesh.GetInstanceID(), false);
AssetDatabase.CreateAsset(lod1Mesh, "Assets/terrainMeshes/LOD0/terrain_" + originX + "-" + originY + "-lod1.mesh");
//for debug
//GetComponent<MeshFilter>().sharedMesh = lod1Mesh;
//create LOD0MEsh
combi = new CombineInstance[5];
combi[0].mesh = voetpadmesh;
combi[1].mesh = fietspadMesh;
combi[2].mesh = parkeervlakMesh;
combi[3].mesh = wegmesh;
combi[4].mesh = spoorbaanMesh;
Mesh Roads = new Mesh();
Roads.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
Roads.CombineMeshes(combi, true, false);
Roads = SimplifyMesh(Roads, 0.05f);
combi = new CombineInstance[3];
combi[0].mesh = erfMesh;
combi[1].mesh = LandUseMesh;
combi[2].mesh = WoonerfMesh;
Mesh landuse = new Mesh();
landuse.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
landuse.CombineMeshes(combi, true, false);
landuse = SimplifyMesh(landuse, 0.05f);
combi = new CombineInstance[12];
combi[0].mesh = CreateEmptyMesh(); //
combi[1].mesh = CreateEmptyMesh(); //
combi[2].mesh = CreateEmptyMesh(); //
combi[3].mesh = Roads; //
combi[4].mesh = SimplifyMesh(groenMesh, 0.05f); //
combi[5].mesh = CreateEmptyMesh(); //
combi[6].mesh = landuse; //
combi[7].mesh = CreateEmptyMesh(); //
combi[8].mesh = CreateEmptyMesh(); //
combi[9].mesh = genericCityObjectMesh;
combi[10].mesh = bridgeMesh;
combi[11].mesh = waterBodyMesh;
Mesh lod0Mesh = new Mesh();
lod0Mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
lod0Mesh.CombineMeshes(combi, false, false);
lod0Mesh.uv2 = RDuv2(lod0Mesh.vertices, CoordConvert.RDtoUnity(new Vector3RD(originX, originY, 0)), tileSize);
Physics.BakeMesh(lod0Mesh.GetInstanceID(), false);
AssetDatabase.CreateAsset(lod0Mesh, "Assets/terrainMeshes/LOD0/terrain_" + originX + "-" + originY + "-lod0.mesh");
}
}
static private Mesh CreateCityObjectMesh(CityModel cityModel, string cityObjectType, double originX, double originY, float tileSize, string bgtProperty, List <string> bgtValues, bool include)
{
List <Vector3RD> RDTriangles = GetTriangleListRD(cityModel, cityObjectType, bgtProperty, bgtValues, include);
List <Vector3RD> clippedRDTriangles = new List <Vector3RD>();
List <Vector3> vectors = new List <Vector3>();
List <Vector3> clipboundary = CreateClippingPolygon(tileSize);
if (RDTriangles.Count == 0)
{
return(CreateEmptyMesh());
}
//clip all the triangles
for (int i = 0; i < RDTriangles.Count; i += 3)
{
if (PointISInsideArea(RDTriangles[i], originX, originY, tileSize) && PointISInsideArea(RDTriangles[i + 1], originX, originY, tileSize) && PointISInsideArea(RDTriangles[i + 2], originX, originY, tileSize))
{
clippedRDTriangles.Add(RDTriangles[i + 2]);
clippedRDTriangles.Add(RDTriangles[i + 1]);
clippedRDTriangles.Add(RDTriangles[i]);
continue;
}
//offset RDvertices so coordinates can be saved as a float
// flip y and z-axis so clippingtool works
//reverse order to make them clockwise so the clipping-algorithm can use them
vectors.Clear();
vectors.Add(new Vector3((float)(RDTriangles[i + 2].x - originX), (float)RDTriangles[i + 2].z, (float)(RDTriangles[i + 2].y - originY)));
vectors.Add(new Vector3((float)(RDTriangles[i + 1].x - originX), (float)RDTriangles[i + 1].z, (float)(RDTriangles[i + 1].y - originY)));
vectors.Add(new Vector3((float)(RDTriangles[i].x - originX), (float)RDTriangles[i].z, (float)(RDTriangles[i].y - originY)));
List <Vector3> defshape = Netherlands3D.Utilities.TriangleClipping.SutherlandHodgman.ClipPolygon(vectors, clipboundary);
if (defshape.Count < 3)
{
continue;
}
if (defshape[0].x.ToString() == "NaN")
{
continue;
}
Vector3RD vectorRD = new Vector3RD();
// add first three vectors
vectorRD.x = defshape[0].x + originX;
vectorRD.y = defshape[0].z + originY;
vectorRD.z = defshape[0].y;
clippedRDTriangles.Add(vectorRD);
vectorRD.x = defshape[1].x + originX;
vectorRD.y = defshape[1].z + originY;
vectorRD.z = defshape[1].y;
clippedRDTriangles.Add(vectorRD);
vectorRD.x = defshape[2].x + originX;
vectorRD.y = defshape[2].z + originY;
vectorRD.z = defshape[2].y;
clippedRDTriangles.Add(vectorRD);
// add extra vectors. vector makes a triangle with the first and the previous vector.
for (int j = 3; j < defshape.Count; j++)
{
vectorRD.x = defshape[0].x + originX;
vectorRD.y = defshape[0].z + originY;
vectorRD.z = defshape[0].y;
clippedRDTriangles.Add(vectorRD);
vectorRD.x = defshape[j - 1].x + originX;
vectorRD.y = defshape[j - 1].z + originY;
vectorRD.z = defshape[j - 1].y;
clippedRDTriangles.Add(vectorRD);
vectorRD.x = defshape[j].x + originX;
vectorRD.y = defshape[j].z + originY;
vectorRD.z = defshape[j].y;
clippedRDTriangles.Add(vectorRD);
}
}
//createMesh
List <Vector3> verts = new List <Vector3>();
Vector3RD tileCenterRD = new Vector3RD();
tileCenterRD.x = originX + (tileSize / 2);
tileCenterRD.y = originY + (tileSize / 2);
tileCenterRD.z = 0;
Vector3 tileCenterUnity = CoordConvert.RDtoUnity(tileCenterRD);
List <int> ints = new List <int>();
for (int i = 0; i < clippedRDTriangles.Count; i++)
{
Vector3 coord = CoordConvert.RDtoUnity(clippedRDTriangles[i]) - tileCenterUnity;
ints.Add(i);
verts.Add(coord);
}
ints.Reverse(); //reverse the trianglelist to make the triangles counter-clockwise again
if (ints.Count == 0)
{
return(CreateEmptyMesh());
}
Mesh mesh = new Mesh();
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
mesh.vertices = verts.ToArray();
mesh.triangles = ints.ToArray();
mesh = WeldVertices(mesh);
mesh.RecalculateNormals();
mesh.Optimize();
return(mesh);
}
