| static private CreateNormals ( Mesh &Mesh ) : void | ||
| Mesh | Mesh | The mesh for which to generate normals |
| return | void | |
/// <summary>Loads a Loksim3D object from a file.</summary>
/// <param name="FileName">The text file to load the animated object from. Must be an absolute file name.</param>
/// <param name="Encoding">The encoding the file is saved in. If the file uses a byte order mark, the encoding indicated by the byte order mark is used and the Encoding parameter is ignored.</param>
/// <param name="LoadMode">The texture load mode.</param>
/// <param name="ForceTextureRepeatX">Whether to force TextureWrapMode.Repeat for the X-axis</param>
/// <param name="ForceTextureRepeatY">Whether to force TextureWrapMode.Repeat for the Y-axis</param>
/// <param name="Rotation">A three-dimemsional vector describing the rotation to be applied</param>
/// <returns>The object loaded.</returns>
internal static ObjectManager.StaticObject ReadObject(string FileName, System.Text.Encoding Encoding, ObjectManager.ObjectLoadMode LoadMode, bool ForceTextureRepeatX, bool ForceTextureRepeatY, Vector3 Rotation)
{
string BaseDir = System.IO.Path.GetDirectoryName(FileName);
XmlDocument currentXML = new XmlDocument();
//Initialise the object
ObjectManager.StaticObject Object = new ObjectManager.StaticObject();
Object.Mesh.Faces = new World.MeshFace[] { };
Object.Mesh.Materials = new World.MeshMaterial[] { };
Object.Mesh.Vertices = new World.Vertex[] { };
MeshBuilder Builder = new MeshBuilder();
Vector3[] Normals = new Vector3[4];
bool PropertiesFound = false;
World.Vertex[] tempVertices = new World.Vertex[0];
Vector3[] tempNormals = new Vector3[0];
Color24 transparentColor = new Color24();
string tday = null;
string transtex = null;
string tnight = null;
bool TransparencyUsed = false;
bool TransparentTypSet = false;
bool FirstPxTransparent = false;
Color24 FirstPxColor = new Color24();
bool Face2 = false;
int TextureWidth = 0;
int TextureHeight = 0;
if (File.Exists(FileName))
{
try
{
currentXML.Load(FileName);
}
catch
{
return(null);
}
}
else
{
Interface.AddMessage(Interface.MessageType.Error, false, "Loksim3D object " + FileName + " does not exist.");
return(null);
}
//Check for null
if (currentXML.DocumentElement != null)
{
XmlNodeList DocumentNodes = currentXML.DocumentElement.SelectNodes("/OBJECT");
//Check this file actually contains Loksim3D object nodes
if (DocumentNodes != null)
{
foreach (XmlNode outerNode in DocumentNodes)
{
if (outerNode.ChildNodes.OfType <XmlElement>().Any())
{
foreach (XmlNode node in outerNode.ChildNodes)
{
//I think there should only be one properties node??
//Need better format documentation
if (node.Name == "Props" && PropertiesFound == false)
{
if (node.Attributes != null)
{
//Our node has child nodes, therefore this properties node should be valid
//Needs better validation
PropertiesFound = true;
foreach (XmlAttribute attribute in node.Attributes)
{
switch (attribute.Name)
{
//Sets the texture
//Loksim3D objects only support daytime textures
case "Texture":
tday = OpenBveApi.Path.Loksim3D.CombineFile(BaseDir, attribute.Value, Program.FileSystem.LoksimPackageInstallationDirectory);
if (!File.Exists(tday))
{
Interface.AddMessage(Interface.MessageType.Warning, true, "Ls3d Texture file " + attribute.Value + " not found.");
break;
}
try
{
using (Bitmap TextureInformation = new Bitmap(tday))
{
TextureWidth = TextureInformation.Width;
TextureHeight = TextureInformation.Height;
Color color = TextureInformation.GetPixel(0, 0);
FirstPxColor = new Color24(color.R, color.G, color.B);
}
}
catch
{
Interface.AddMessage(Interface.MessageType.Error, true,
"An error occured loading daytime texture " + tday +
" in file " + FileName);
tday = null;
}
break;
//Defines whether the texture uses transparency
//May be omitted
case "Transparent":
if (TransparentTypSet)
{
//Appears to be ignored with TransparentTyp set
continue;
}
if (attribute.Value == "TRUE")
{
TransparencyUsed = true;
transparentColor = new Color24(0, 0, 0);
}
break;
case "TransTexture":
if (string.IsNullOrEmpty(attribute.Value))
{
//Empty....
continue;
}
transtex = OpenBveApi.Path.Loksim3D.CombineFile(BaseDir, attribute.Value, Program.FileSystem.LoksimPackageInstallationDirectory);
if (!File.Exists(transtex))
{
Interface.AddMessage(Interface.MessageType.Error, true, "AlphaTexture " + transtex + " could not be found in file " + FileName);
transtex = null;
}
break;
//Sets the transparency type
case "TransparentTyp":
TransparentTypSet = true;
switch (attribute.Value)
{
case "0":
//Transparency is disabled
TransparencyUsed = false;
break;
case "1":
//Transparency is solid black
TransparencyUsed = true;
transparentColor = new Color24(0, 0, 0);
FirstPxTransparent = false;
break;
case "2":
//Transparency is the color at Pixel 1,1
TransparencyUsed = true;
FirstPxTransparent = true;
break;
case "3":
case "4":
//This is used when transparency is used with an alpha bitmap
TransparencyUsed = false;
FirstPxTransparent = false;
break;
case "5":
//Use the alpha channel from the image, so we don't need to do anything fancy
//TODO: (Low priority) Check what happens in Loksim itself when an image uses the Alpha channel, but doesn't actually specify type 5
break;
default:
Interface.AddMessage(Interface.MessageType.Error, false, "Unrecognised transparency type " + attribute.Value + " detected in " + attribute.Name + " in Loksim3D object file " + FileName);
break;
}
break;
//Sets whether the rears of the faces are to be drawn
case "Drawrueckseiten":
if (attribute.Value == "TRUE" || string.IsNullOrEmpty(attribute.Value))
{
Face2 = true;
}
else
{
Face2 = false;
}
break;
/*
* MISSING PROPERTIES:
* AutoRotate - Rotate with tracks?? LS3D presumably uses a 3D world system.
* Beleuchtet- Translates as illuminated. Presume something to do with lighting? - What emissive color?
* FileAuthor
* FileInfo
* FilePicture
*/
}
}
}
}
//The point command is eqivilant to a vertex
else if (node.Name == "Point" && node.ChildNodes.OfType <XmlElement>().Any())
{
foreach (XmlNode childNode in node.ChildNodes)
{
if (childNode.Name == "Props" && childNode.Attributes != null)
{
//Vertex
double vx = 0.0, vy = 0.0, vz = 0.0;
//Normals
double nx = 0.0, ny = 0.0, nz = 0.0;
foreach (XmlAttribute attribute in childNode.Attributes)
{
switch (attribute.Name)
{
//Sets the vertex normals
case "Normal":
string[] NormalPoints = attribute.Value.Split(';');
if (!double.TryParse(NormalPoints[0], out nx))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid argument nX in " + attribute.Name + " in Loksim3D object file " + FileName);
}
if (!double.TryParse(NormalPoints[1], out ny))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid argument nY in " + attribute.Name + " in Loksim3D object file " + FileName);
}
if (!double.TryParse(NormalPoints[2], out nz))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid argument nZ in " + attribute.Name + " in Loksim3D object file " + FileName);
}
break;
//Sets the vertex 3D co-ordinates
case "Vekt":
string[] VertexPoints = attribute.Value.Split(';');
if (!double.TryParse(VertexPoints[0], out vx))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid argument vX in " + attribute.Name + " in Loksim3D object file " + FileName);
}
if (!double.TryParse(VertexPoints[1], out vy))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid argument yY in " + attribute.Name + " in Loksim3D object file " + FileName);
}
if (!double.TryParse(VertexPoints[2], out vz))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid argument vZ in " + attribute.Name + " in Loksim3D object file " + FileName);
}
break;
}
}
World.Normalize(ref nx, ref ny, ref nz);
//Resize temp arrays
Array.Resize <World.Vertex>(ref tempVertices, tempVertices.Length + 1);
Array.Resize <Vector3>(ref tempNormals, tempNormals.Length + 1);
//Add vertex and normals to temp array
tempVertices[tempVertices.Length - 1].Coordinates = new Vector3(vx, vy, vz);
tempNormals[tempNormals.Length - 1] = new Vector3((float)nx, (float)ny, (float)nz);
Array.Resize <World.Vertex>(ref Builder.Vertices, Builder.Vertices.Length + 1);
while (Builder.Vertices.Length >= Normals.Length)
{
Array.Resize <Vector3>(ref Normals, Normals.Length << 1);
}
Builder.Vertices[Builder.Vertices.Length - 1].Coordinates = new Vector3(vx, vy, vz);
Normals[Builder.Vertices.Length - 1] = new Vector3((float)nx, (float)ny, (float)nz);
}
}
}
//The Flaeche command creates a face
else if (node.Name == "Flaeche" && node.ChildNodes.OfType <XmlElement>().Any())
{
foreach (XmlNode childNode in node.ChildNodes)
{
if (childNode.Name == "Props" && childNode.Attributes != null)
{
//Defines the verticies in this face
//**NOTE**: A vertex may appear in multiple faces with different texture co-ordinates
if (childNode.Attributes["Points"] != null)
{
string[] Verticies = childNode.Attributes["Points"].Value.Split(';');
int f = Builder.Faces.Length;
//Add 1 to the length of the face array
Array.Resize <World.MeshFace>(ref Builder.Faces, f + 1);
Builder.Faces[f] = new World.MeshFace();
//Create the vertex array for the face
Builder.Faces[f].Vertices = new World.MeshFaceVertex[Verticies.Length];
while (Builder.Vertices.Length > Normals.Length)
{
Array.Resize <Vector3>(ref Normals,
Normals.Length << 1);
}
//Run through the vertices list and grab from the temp array
int smallestX = TextureWidth;
int smallestY = TextureHeight;
for (int j = 0; j < Verticies.Length; j++)
{
//This is the position of the vertex in the temp array
int currentVertex;
if (!int.TryParse(Verticies[j], out currentVertex))
{
Interface.AddMessage(Interface.MessageType.Error, false, Verticies[j] + " does not parse to a valid Vertex in " + node.Name + " in Loksim3D object file " + FileName);
continue;
}
//Add one to the actual vertex array
Array.Resize <World.Vertex>(ref Builder.Vertices, Builder.Vertices.Length + 1);
//Set coordinates
Builder.Vertices[Builder.Vertices.Length - 1].Coordinates = tempVertices[currentVertex].Coordinates;
//Set the vertex index
Builder.Faces[f].Vertices[j].Index = (ushort)(Builder.Vertices.Length - 1);
//Set the normals
Builder.Faces[f].Vertices[j].Normal = tempNormals[currentVertex];
//Now deal with the texture
//Texture mapping points are in pixels X,Y and are relative to the face in question rather than the vertex
if (childNode.Attributes["Texture"] != null)
{
string[] TextureCoords = childNode.Attributes["Texture"].Value.Split(';');
Vector2 currentCoords;
float OpenBVEWidth;
float OpenBVEHeight;
string[] splitCoords = TextureCoords[j].Split(',');
if (!float.TryParse(splitCoords[0], out OpenBVEWidth))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid texture width specified in " + node.Name + " in Loksim3D object file " + FileName);
continue;
}
if (!float.TryParse(splitCoords[1], out OpenBVEHeight))
{
Interface.AddMessage(Interface.MessageType.Error, false, "Invalid texture height specified in " + node.Name + " in Loksim3D object file " + FileName);
continue;
}
if (OpenBVEWidth <= smallestX && OpenBVEHeight <= smallestY)
{
//Clamp texture width and height
smallestX = (int)OpenBVEWidth;
smallestY = (int)OpenBVEHeight;
}
if (TextureWidth != 0 && TextureHeight != 0)
{
//Calculate openBVE co-ords
currentCoords.X = (OpenBVEWidth / TextureWidth);
currentCoords.Y = (OpenBVEHeight / TextureHeight);
}
else
{
//Invalid, so just return zero
currentCoords.X = 0;
currentCoords.Y = 0;
}
Builder.Vertices[Builder.Vertices.Length - 1].TextureCoordinates = currentCoords;
}
}
if (Face2)
{
//Add face2 flag if required
Builder.Faces[f].Flags = (byte)World.MeshFace.Face2Mask;
}
}
}
}
}
}
}
}
}
//Apply rotation
/*
* NOTES:
* No rotation order is specified
* The rotation string in a .l3dgrp file is ordered Y, Z, X ??? Can't find a good reason for this ???
* Rotations must still be performed in X,Y,Z order to produce correct results
*/
if (Rotation.Z != 0.0)
{
//Convert to radians
Rotation.Z *= 0.0174532925199433;
//Apply rotation
ApplyRotation(Builder, 1, 0, 0, Rotation.Z);
}
if (Rotation.X != 0.0)
{
//This is actually the Y-Axis rotation
//Convert to radians
Rotation.X *= 0.0174532925199433;
//Apply rotation
ApplyRotation(Builder, 0, 1, 0, Rotation.X);
}
if (Rotation.Y != 0.0)
{
//This is actually the X-Axis rotation
//Convert to radians
Rotation.Y *= 0.0174532925199433;
//Apply rotation
ApplyRotation(Builder, 0, 0, 1, Rotation.Y);
}
//These files appear to only have one texture defined
//Therefore import later- May have to change
if (File.Exists(tday))
{
for (int j = 0; j < Builder.Materials.Length; j++)
{
Builder.Materials[j].DaytimeTexture = tday;
Builder.Materials[j].TransparencyTexture = transtex;
Builder.Materials[j].NighttimeTexture = tnight;
}
}
if (TransparencyUsed == true)
{
for (int j = 0; j < Builder.Materials.Length; j++)
{
Builder.Materials[j].TransparentColor = FirstPxTransparent ? FirstPxColor : transparentColor;
Builder.Materials[j].TransparentColorUsed = true;
}
}
}
ApplyMeshBuilder(ref Object, Builder, LoadMode, ForceTextureRepeatX, ForceTextureRepeatY);
World.CreateNormals(ref Object.Mesh);
return(Object);
}
/// <summary>Loads a Wavefront object from a file.</summary>
/// <param name="FileName">The text file to load the animated object from. Must be an absolute file name.</param>
/// <param name="Encoding">The encoding the file is saved in. If the file uses a byte order mark, the encoding indicated by the byte order mark is used and the Encoding parameter is ignored.</param>
/// <param name="LoadMode">The texture load mode.</param>
/// <param name="ForceTextureRepeatX">Whether to force TextureWrapMode.Repeat for referenced textures on the X-axis</param>
/// <param name="ForceTextureRepeatY">Whether to force TextureWrapMode.Repeat for referenced textures on the Y-axis</param>
/// <returns>The object loaded.</returns>
internal static ObjectManager.StaticObject ReadObject(string FileName, System.Text.Encoding Encoding, ObjectManager.ObjectLoadMode LoadMode, bool ForceTextureRepeatX, bool ForceTextureRepeatY)
{
ObjectManager.StaticObject Object = new ObjectManager.StaticObject
{
Mesh =
{
Faces = new World.MeshFace[] { },
Materials = new World.MeshMaterial[] { },
Vertices = new VertexTemplate[] { }
}
};
MeshBuilder Builder = new MeshBuilder();
/*
* Temporary arrays
*/
List <Vector3> tempVertices = new List <Vector3>();
List <Vector3> tempNormals = new List <Vector3>();
List <Vector2> tempCoords = new List <Vector2>();
Material[] TempMaterials = new Material[0];
//Stores the current material
int currentMaterial = -1;
//Read the contents of the file
string[] Lines = File.ReadAllLines(FileName);
//Preprocess
for (int i = 0; i < Lines.Length; i++)
{
// Strip hash comments
int c = Lines[i].IndexOf("#", StringComparison.Ordinal);
if (c >= 0)
{
Lines[i] = Lines[i].Substring(0, c);
}
// collect arguments
List <string> Arguments = new List <string>(Lines[i].Split(new char[] { ' ', '\t' }, StringSplitOptions.None));
for (int j = Arguments.Count - 1; j >= 0; j--)
{
Arguments[j] = Arguments[j].Trim();
if (Arguments[j] == string.Empty)
{
Arguments.RemoveAt(j);
}
}
if (Arguments.Count == 0)
{
continue;
}
switch (Arguments[0].ToLowerInvariant())
{
case "v":
//Vertex
Vector3 vertex = new Vector3();
if (!double.TryParse(Arguments[1], out vertex.X))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid X co-ordinate in Vertex at Line " + i);
}
if (!double.TryParse(Arguments[2], out vertex.Y))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid Y co-ordinate in Vertex at Line " + i);
}
if (!double.TryParse(Arguments[3], out vertex.Z))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid Z co-ordinate in Vertex at Line " + i);
}
tempVertices.Add(vertex);
break;
case "vt":
//Vertex texture co-ords
Vector2 coords = new Vector2();
if (!double.TryParse(Arguments[1], out coords.X))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid X co-ordinate in Texture Co-ordinates at Line " + i);
}
if (!double.TryParse(Arguments[2], out coords.Y))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid X co-ordinate in Texture Co-Ordinates at Line " + i);
}
tempCoords.Add(coords);
break;
case "vn":
Vector3 normal = new Vector3();
if (!double.TryParse(Arguments[1], out normal.X))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid X co-ordinate in Vertex Normal at Line " + i);
}
if (!double.TryParse(Arguments[2], out normal.Y))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid Y co-ordinate in Vertex Normal at Line " + i);
}
if (!double.TryParse(Arguments[3], out normal.Z))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid Z co-ordinate in Vertex Normal at Line " + i);
}
tempNormals.Add(normal);
//Vertex normals
break;
case "vp":
//Parameter space verticies, not supported
throw new NotSupportedException("Parameter space verticies are not supported by this parser");
case "f":
//Creates a new face
//Create the temp list to hook out the vertices
List <VertexTemplate> vertices = new List <VertexTemplate>();
List <Vector3> normals = new List <Vector3>();
for (int f = 1; f < Arguments.Count; f++)
{
Vertex newVertex = new Vertex();
string[] faceArguments = Arguments[f].Split(new char[] { '/' }, StringSplitOptions.None);
int idx;
if (!int.TryParse(faceArguments[0], out idx))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid Vertex index in Face " + f + " at Line " + i);
continue;
}
int currentVertex = tempVertices.Count;
if (idx != Math.Abs(idx))
{
//Offset, so we seem to need to add one....
currentVertex++;
currentVertex += idx;
}
else
{
currentVertex = idx;
}
if (currentVertex > tempVertices.Count)
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Vertex index " + idx + " was greater than the available number of vertices in Face " + f + " at Line " + i);
continue;
}
newVertex.Coordinates = tempVertices[currentVertex - 1];
if (faceArguments.Length <= 1)
{
normals.Add(new Vector3());
}
else
{
if (!int.TryParse(faceArguments[1], out idx))
{
if (!string.IsNullOrEmpty(faceArguments[1]))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid Texture Co-ordinate index in Face " + f + " at Line " + i);
}
newVertex.TextureCoordinates = new Vector2();
}
else
{
int currentCoord = tempCoords.Count;
if (idx != Math.Abs(idx))
{
//Offset, so we seem to need to add one....
currentCoord++;
currentCoord += idx;
}
else
{
currentCoord = idx;
}
if (currentCoord > tempCoords.Count)
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Texture Co-ordinate index " + currentCoord + " was greater than the available number of texture co-ordinates in Face " + f + " at Line " + i);
}
else
{
newVertex.TextureCoordinates = tempCoords[currentCoord - 1];
}
}
}
if (faceArguments.Length <= 2)
{
normals.Add(new Vector3());
}
else
{
if (!int.TryParse(faceArguments[2], out idx))
{
if (!string.IsNullOrEmpty(faceArguments[2]))
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Invalid Vertex Normal index in Face " + f + " at Line " + i);
}
normals.Add(new Vector3());
}
else
{
int currentNormal = tempNormals.Count;
if (idx != Math.Abs(idx))
{
//Offset, so we seem to need to add one....
currentNormal++;
currentNormal += idx;
}
else
{
currentNormal = idx;
}
if (currentNormal > tempNormals.Count)
{
Interface.AddMessage(Interface.MessageType.Warning, false, "Vertex Normal index " + currentNormal + " was greater than the available number of normals in Face " + f + " at Line " + i);
normals.Add(new Vector3());
}
else
{
normals.Add(tempNormals[currentNormal - 1]);
}
}
}
vertices.Add(newVertex);
}
World.MeshFaceVertex[] Vertices = new World.MeshFaceVertex[vertices.Count];
for (int k = 0; k < vertices.Count; k++)
{
Builder.Vertices.Add(vertices[k]);
Vertices[k].Index = (ushort)(Builder.Vertices.Count - 1);
Vertices[k].Normal = normals[k];
}
Builder.Faces.Add(currentMaterial == -1 ? new World.MeshFace(Vertices, 0) : new World.MeshFace(Vertices, (ushort)currentMaterial));
break;
case "g":
//Starts a new face group and (normally) applies a new texture
ApplyMeshBuilder(ref Object, Builder, LoadMode, ForceTextureRepeatX, ForceTextureRepeatY);
Builder = new MeshBuilder();
break;
case "s":
/*
* Changes the smoothing group applied to these vertexes:
* 0- Disabled (Overriden by Vertex normals)
* Otherwise appears to be a bitmask (32 available groups)
* whereby faces within the same groups have their normals averaged
* to appear smooth joins
*
* Not really supported at the minute, probably requires the engine
* twiddling to deliberately support specifiying the shading type for a face
*
*/
break;
case "mtllib":
//Loads the library of materials used by this file
string MaterialsPath = OpenBveApi.Path.CombineFile(Path.GetDirectoryName(FileName), Arguments[1]);
if (File.Exists(MaterialsPath))
{
LoadMaterials(MaterialsPath, ref TempMaterials);
}
break;
case "usemtl":
for (int m = 0; m < TempMaterials.Length; m++)
{
if (TempMaterials[m].Key.ToLowerInvariant() == Arguments[1].ToLowerInvariant())
{
bool mf = false;
for (int k = 0; k < Builder.Materials.Length; k++)
{
if (Builder.Materials[k].Key.ToLowerInvariant() == Arguments[1].ToLowerInvariant())
{
mf = true;
currentMaterial = k;
break;
}
}
if (!mf)
{
Array.Resize(ref Builder.Materials, Builder.Materials.Length + 1);
Builder.Materials[Builder.Materials.Length - 1] = TempMaterials[m];
currentMaterial = Builder.Materials.Length - 1;
}
break;
}
if (m == TempMaterials.Length)
{
Interface.AddMessage(Interface.MessageType.Error, true, "Material " + Arguments[1] + " was not found.");
currentMaterial = -1;
}
}
break;
default:
Interface.AddMessage(Interface.MessageType.Warning, false, "Unrecognised command " + Arguments[0]);
break;
}
}
ApplyMeshBuilder(ref Object, Builder, LoadMode, ForceTextureRepeatX, ForceTextureRepeatY);
World.CreateNormals(ref Object.Mesh);
return(Object);
}
// read object
/// <summary>Loads a Loksim3D object from a file.</summary>
/// <param name="FileName">The text file to load the animated object from. Must be an absolute file name.</param>
/// <param name="Encoding">The encoding the file is saved in. If the file uses a byte order mark, the encoding indicated by the byte order mark is used and the Encoding parameter is ignored.</param>
/// <param name="LoadMode">The texture load mode.</param>
/// <param name="ForceTextureRepeatX">Whether to force TextureWrapMode.Repeat for the X-axis</param>
/// /// <param name="ForceTextureRepeatY">Whether to force TextureWrapMode.Repeat for the Y-axis</param>
/// <returns>The object loaded.</returns>
internal static ObjectManager.StaticObject ReadObject(string FileName, System.Text.Encoding Encoding, ObjectManager.ObjectLoadMode LoadMode, bool ForceTextureRepeatX, bool ForceTextureRepeatY, double RotationX, double RotationY, double RotationZ)
{
XmlDocument currentXML = new XmlDocument();
//May need to be changed to use de-DE
System.Globalization.CultureInfo Culture = System.Globalization.CultureInfo.InvariantCulture;
//Initialise the object
ObjectManager.StaticObject Object = new ObjectManager.StaticObject();
Object.Mesh.Faces = new World.MeshFace[] { };
Object.Mesh.Materials = new World.MeshMaterial[] { };
Object.Mesh.Vertices = new World.Vertex[] { };
MeshBuilder Builder = new MeshBuilder();
World.Vector3Df[] Normals = new World.Vector3Df[4];
bool PropertiesFound = false;
World.Vertex[] tempVertices = new World.Vertex[0];
World.Vector3Df[] tempNormals = new World.Vector3Df[0];
World.ColorRGB transparentColor = new World.ColorRGB();
string tday = null;
string tnight = null;
bool TransparencyUsed = false;
bool Face2 = false;
int TextureWidth = 0;
int TextureHeight = 0;
if (File.Exists(FileName))
{
currentXML.Load(FileName);
}
else
{
return(null);
}
//Check for null
if (currentXML.DocumentElement != null)
{
XmlNodeList DocumentNodes = currentXML.DocumentElement.SelectNodes("/OBJECT");
//Check this file actually contains Loksim3D object nodes
if (DocumentNodes != null)
{
foreach (XmlNode outerNode in DocumentNodes)
{
if (outerNode.HasChildNodes)
{
foreach (XmlNode node in outerNode.ChildNodes)
{
//I think there should only be one properties node??
//Need better format documentation
if (node.Name == "Props" && PropertiesFound == false)
{
if (node.Attributes != null)
{
//Our node has child nodes, therefore this properties node should be valid
//Needs better validation
PropertiesFound = true;
foreach (XmlAttribute attribute in node.Attributes)
{
switch (attribute.Name)
{
//Sets the texture
//Loksim3D objects only support daytime textures
case "Texture":
tday = OpenBveApi.Path.CombineFile(System.IO.Path.GetDirectoryName(FileName), attribute.Value);
if (File.Exists(tday))
{
try
{
using (Bitmap TextureInformation = new Bitmap(tday))
{
TextureWidth = TextureInformation.Width;
TextureHeight = TextureInformation.Height;
Color color = TextureInformation.GetPixel(1, 1);
transparentColor = new World.ColorRGB((byte)color.R, (byte)color.G, (byte)color.B);
}
}
catch
{
Interface.AddMessage(Interface.MessageType.Error, true, "An error occured loading daytime texture " + tday + " in file " + FileName);
tday = null;
}
}
else
{
Interface.AddMessage(Interface.MessageType.Error, true, "DaytimeTexture " + tday + " could not be found in file " + FileName);
}
break;
//Defines whether the texture uses transparency
//May be omitted
case "Transparent":
if (attribute.Value == "TRUE")
{
TransparencyUsed = true;
}
else
{
TransparencyUsed = false;
}
break;
//Sets the transparency type
case "TransparentTyp":
switch (attribute.Value)
{
case "0":
//Transparency is disabled
TransparencyUsed = false;
break;
case "1":
//Transparency is solid black
TransparencyUsed = true;
transparentColor = new World.ColorRGB(0, 0, 0);
break;
case "2":
//Transparency is the color at Pixel 1,1
TransparencyUsed = true;
break;
case "3":
//This is used when transparency is used with an alpha bitmap
//Not currently supported
TransparencyUsed = false;
break;
}
break;
//Sets whether the rears of the faces are to be drawn
case "Drawrueckseiten":
Face2 = true;
break;
/*
* MISSING PROPERTIES:
* AutoRotate - Rotate with tracks?? LS3D presumably uses a 3D world system.
* Beleuchtet- Translates as illuminated. Presume something to do with lighting? - What emissive color?
* FileAuthor
* FileInfo
* FilePicture
*/
}
}
}
}
//The point command is eqivilant to a vertex
else if (node.Name == "Point" && node.HasChildNodes)
{
foreach (XmlNode childNode in node.ChildNodes)
{
if (childNode.Name == "Props" && childNode.Attributes != null)
{
//Vertex
double vx = 0.0, vy = 0.0, vz = 0.0;
//Normals
double nx = 0.0, ny = 0.0, nz = 0.0;
foreach (XmlAttribute attribute in childNode.Attributes)
{
switch (attribute.Name)
{
//Sets the vertex normals
case "Normal":
string[] NormalPoints = attribute.Value.Split(';');
double.TryParse(NormalPoints[0], out nx);
double.TryParse(NormalPoints[1], out ny);
double.TryParse(NormalPoints[2], out nz);
break;
//Sets the vertex 3D co-ordinates
case "Vekt":
string[] VertexPoints = attribute.Value.Split(';');
double.TryParse(VertexPoints[0], out vx);
double.TryParse(VertexPoints[1], out vy);
double.TryParse(VertexPoints[2], out vz);
break;
}
}
World.Normalize(ref nx, ref ny, ref nz);
{
//Resize temp arrays
Array.Resize <World.Vertex>(ref tempVertices, tempVertices.Length + 1);
Array.Resize <World.Vector3Df>(ref tempNormals, tempNormals.Length + 1);
//Add vertex and normals to temp array
tempVertices[tempVertices.Length - 1].Coordinates = new World.Vector3D(vx, vy, vz);
tempNormals[tempNormals.Length - 1] = new World.Vector3Df((float)nx, (float)ny, (float)nz);
}
Array.Resize <World.Vertex>(ref Builder.Vertices, Builder.Vertices.Length + 1);
while (Builder.Vertices.Length >= Normals.Length)
{
Array.Resize <World.Vector3Df>(ref Normals, Normals.Length << 1);
}
Builder.Vertices[Builder.Vertices.Length - 1].Coordinates = new World.Vector3D(vx, vy, vz);
Normals[Builder.Vertices.Length - 1] = new World.Vector3Df((float)nx, (float)ny, (float)nz);
}
}
}
//The Flaeche command creates a face
else if (node.Name == "Flaeche" && node.HasChildNodes)
{
foreach (XmlNode childNode in node.ChildNodes)
{
if (childNode.Name == "Props" && childNode.Attributes != null)
{
//Defines the verticies in this face
//**NOTE**: A vertex may appear in multiple faces with different texture co-ordinates
if (childNode.Attributes["Points"] != null)
{
string[] Verticies = childNode.Attributes["Points"].Value.Split(';');
int f = Builder.Faces.Length;
//Add 1 to the length of the face array
Array.Resize <World.MeshFace>(ref Builder.Faces, f + 1);
Builder.Faces[f] = new World.MeshFace();
//Create the vertex array for the face
Builder.Faces[f].Vertices = new World.MeshFaceVertex[Verticies.Length];
while (Builder.Vertices.Length > Normals.Length)
{
Array.Resize <World.Vector3Df>(ref Normals,
Normals.Length << 1);
}
//Run through the vertices list and grab from the temp array
for (int j = 0; j < Verticies.Length; j++)
{
//This is the position of the vertex in the temp array
int currentVertex;
int.TryParse(Verticies[j], out currentVertex);
//Add one to the actual vertex array
Array.Resize <World.Vertex>(ref Builder.Vertices, Builder.Vertices.Length + 1);
//Set coordinates
Builder.Vertices[Builder.Vertices.Length - 1].Coordinates = tempVertices[currentVertex].Coordinates;
//Set the vertex index
Builder.Faces[f].Vertices[j].Index = (ushort)(Builder.Vertices.Length - 1);
//Set the normals
Builder.Faces[f].Vertices[j].Normal = tempNormals[currentVertex];
//Now deal with the texture
//Texture mapping points are in pixels X,Y and are relative to the face in question rather than the vertex
if (childNode.Attributes["Texture"] != null)
{
string[] TextureCoords = childNode.Attributes["Texture"].Value.Split(';');
World.Vector2Df currentCoords;
float OpenBVEWidth;
float OpenBVEHeight;
string[] splitCoords = TextureCoords[j].Split(',');
float.TryParse(splitCoords[0], out OpenBVEWidth);
float.TryParse(splitCoords[1], out OpenBVEHeight);
if (TextureWidth != 0 && TextureHeight != 0)
{
currentCoords.X = (OpenBVEWidth / TextureWidth);
currentCoords.Y = (OpenBVEHeight / TextureHeight);
}
else
{
currentCoords.X = 0;
currentCoords.Y = 0;
}
Builder.Vertices[Builder.Vertices.Length - 1].TextureCoordinates = currentCoords;
}
if (Face2)
{
Builder.Faces[f].Flags = (byte)World.MeshFace.Face2Mask;
}
}
}
}
}
}
}
}
}
}
//Apply rotation
/*
* NOTES:
* No rotation order is specified
* The rotation string in a .l3dgrp file is ordered Y, X, Z ??? Can't find a good reason for this ???
* Rotations must still be performed in X,Y,Z order to produce correct results
*/
if (RotationX != 0.0)
{
//This is actually the Y-Axis rotation
//Convert to radians
RotationX *= 0.0174532925199433;
//Apply rotation
ApplyRotation(Builder, 0, 1, 0, RotationX);
}
if (RotationY != 0.0)
{
//This is actually the X-Axis rotation
//Convert to radians
RotationY *= 0.0174532925199433;
//Apply rotation
ApplyRotation(Builder, 1, 0, 0, RotationY);
}
if (RotationZ != 0.0)
{
//Convert to radians
RotationZ *= 0.0174532925199433;
//Apply rotation
ApplyRotation(Builder, 0, 0, 1, RotationZ);
}
//These files appear to only have one texture defined
//Therefore import later- May have to change
if (File.Exists(tday))
{
for (int j = 0; j < Builder.Materials.Length; j++)
{
Builder.Materials[j].DaytimeTexture = tday;
Builder.Materials[j].NighttimeTexture = tnight;
}
}
if (TransparencyUsed == true)
{
for (int j = 0; j < Builder.Materials.Length; j++)
{
Builder.Materials[j].TransparentColor = transparentColor;
Builder.Materials[j].TransparentColorUsed = true;
}
}
}
ApplyMeshBuilder(ref Object, Builder, LoadMode, ForceTextureRepeatX, ForceTextureRepeatY);
World.CreateNormals(ref Object.Mesh);
return(Object);
}