public override Mesh Load(string file, MeshDecodingOptions options)
{
const bool strictParsing = true;
// --- preparations ---
bool isB3d = file.EndsWith(".b3d", StringComparison.OrdinalIgnoreCase);
char commandArgumentSeparator = isB3d ? ' ' : ',';
FileInformation fileInfo = new FileInformation(isB3d, file, strictParsing, options.Logger);
List <MeshBuilder> meshBuilders = new List <MeshBuilder>();
MeshBuilder currentMeshBuilder = new MeshBuilder();
bool meshBuilderPresent = false;
// --- line by line ---
string[] lines = File.ReadAllLines(file, Encoding.UTF8);
for (int l = 0; l < lines.Length; l++)
{
string line = lines[l];
// --- trim comments and whitespace ---
int semicolon = line.IndexOf(';');
if (semicolon >= 0)
{
line = line.Substring(0, semicolon).Trim();
}
else
{
line = line.Trim();
}
if (line.Length != 0)
{
// --- split into command and argument sequence ---
string command;
string argumentSequence;
int separator = line.IndexOf(commandArgumentSeparator);
if (separator >= 0)
{
command = line.Substring(0, separator).TrimEnd();
argumentSequence = line.Substring(separator + 1).TrimStart();
}
else
{
command = line;
argumentSequence = string.Empty;
}
// --- handle malformed commands ---
if (command.Length != 0)
{
if (isB3d)
{
int comma = command.IndexOf(',');
if (comma >= 0)
{
argumentSequence = command.Substring(comma + 1).TrimStart() + ',' + argumentSequence;
command = command.Substring(0, comma).TrimEnd();
if (strictParsing)
{
string text = "Command \"" + command + "\" must be separated from its arguments by a space in B3D files on line " + (l + 1).ToString() + " in file \"" + file + "\".";
options.Logger.Add(text);
}
}
}
else
{
int space = command.IndexOf(' ');
if (space >= 0)
{
argumentSequence = command.Substring(space + 1).TrimStart() + ',' + argumentSequence;
command = command.Substring(0, space).TrimEnd();
if (strictParsing)
{
string text = "Command \"" + command + "\" must be separated from its arguments by a comma in CSV files on line " + (l + 1).ToString() + " in file \"" + file + "\".";
options.Logger.Add(text);
}
}
}
}
if (command.Length != 0)
{
// --- split into arguments and trim empty arguments from the end ---
string[] arguments = argumentSequence.Split(',');
for (int a = 0; a < arguments.Length; a++)
{
arguments[a] = arguments[a].Trim();
}
int argumentCount = 0;
for (int a = arguments.Length - 1; a >= 0; a--)
{
if (arguments[a].Length != 0)
{
argumentCount = a + 1;
break;
}
}
// --- process commands ---
LineInformation lineInfo = new LineInformation(command, arguments, argumentCount, l + 1, fileInfo);
string commandLower = command.ToLowerInvariant();
switch (commandLower)
{
case "[meshbuilder]":
case "createmeshbuilder":
{
if (strictParsing)
{
CheckCommand(command, "[MeshBuilder]", "CreateMeshBuilder", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 0, lineInfo);
}
meshBuilders.Add(currentMeshBuilder);
currentMeshBuilder = new MeshBuilder();
meshBuilderPresent = true;
}
break;
case "vertex":
case "addvertex":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Vertex", "AddVertex", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 8, lineInfo);
}
double positionX = GetDoubleFromArgument(0, "positionX", 0.0, lineInfo);
double positionY = GetDoubleFromArgument(1, "positionY", 0.0, lineInfo);
double positionZ = GetDoubleFromArgument(2, "positionZ", 0.0, lineInfo);
double normalX = GetDoubleFromArgument(3, "normalX", 0.0, lineInfo);
double normalY = GetDoubleFromArgument(4, "normalY", 0.0, lineInfo);
double normalZ = GetDoubleFromArgument(5, "normalZ", 0.0, lineInfo);
double textureX = GetDoubleFromArgument(6, "textureX", 0.0, lineInfo);
double textureY = GetDoubleFromArgument(7, "textureY", 0.0, lineInfo);
MeshBuilderVertex vertex = new MeshBuilderVertex(new Vector3d(positionX, positionY, positionZ), new Vector3d(normalX, normalY, normalZ), new Vector2d(textureX, textureY));
currentMeshBuilder.Vertices.Add(vertex);
}
break;
case "face":
case "face2":
case "addface":
case "addface2":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
}
bool face2 = commandLower[commandLower.Length - 1] == '2';
if (strictParsing)
{
string suffix = face2 ? "2" : string.Empty;
CheckCommand(command, "Face" + suffix, "AddFace" + suffix, lineInfo);
}
bool success = CheckArgumentCount(command, argumentCount, 3, int.MaxValue, lineInfo);
int[] indices = new int[argumentCount];
for (int i = 0; i < argumentCount; i++)
{
if (!TryGetInt32FromArgument(i, "vertex" + (i + 1).ToString(), 0, currentMeshBuilder.Vertices.Count - 1, -1, false, lineInfo, out indices[i]))
{
success = false;
}
}
if (success)
{
currentMeshBuilder.Faces.Add(new MeshBuilderFace(0, indices, lineInfo.LineNumber));
if (face2)
{
Array.Reverse(indices);
MeshBuilderFace face = new MeshBuilderFace(0, indices, lineInfo.LineNumber);
face.Normals = MeshBuilderFaceNormals.Inverse;
currentMeshBuilder.Faces.Add(face);
}
}
}
break;
case "cube":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", x, lineInfo);
double z = GetDoubleFromArgument(2, "z", x, lineInfo);
currentMeshBuilder.AddCube(x, y, z, lineInfo.LineNumber);
}
break;
case "cylinder":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 1, 4, lineInfo);
}
int numVertices;
bool success = TryGetInt32FromArgument(0, "numVertices", 2, int.MaxValue, 0, false, lineInfo, out numVertices);
double upper = GetDoubleFromArgument(1, "upper", 0.0, lineInfo);
double lower = GetDoubleFromArgument(2, "lower", 0.0, lineInfo);
double height = GetDoubleFromArgument(3, "height", 0.0, lineInfo);
if (success)
{
currentMeshBuilder.AddCylinder(numVertices, upper, lower, height, lineInfo.LineNumber);
}
}
break;
case "[texture]":
case "generatenormals":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "[Texture]", "GenerateNormals", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 0, lineInfo);
}
}
break;
case "translate":
case "translateall":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", 0.0, lineInfo);
double z = GetDoubleFromArgument(2, "z", 0.0, lineInfo);
Vector3d offset = new Vector3d(x, y, z);
currentMeshBuilder.Translate(offset);
if (commandLower == "translateall")
{
foreach (MeshBuilder meshBuilder in meshBuilders)
{
meshBuilder.Translate(offset);
}
}
}
break;
case "scale":
case "scaleall":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 1.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", 1.0, lineInfo);
double z = GetDoubleFromArgument(2, "z", 1.0, lineInfo);
Vector3d factor = new Vector3d(x, y, z);
currentMeshBuilder.Scale(factor);
if (commandLower == "scaleall")
{
foreach (MeshBuilder meshBuilder in meshBuilders)
{
meshBuilder.Scale(factor);
}
}
}
break;
case "rotate":
case "rotateall":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 4, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", 0.0, lineInfo);
double z = GetDoubleFromArgument(2, "z", 0.0, lineInfo);
double a = GetDoubleFromArgument(3, "angle", 0.0, lineInfo) * (Math.PI / 180.0);
Vector3d direction = Vector3d.Normalize(new Vector3d(x, y, z));
if (direction.IsZero())
{
direction = Vector3d.Right;
}
Vector2d angle = new Vector2d(Math.Cos(a), Math.Sin(a));
currentMeshBuilder.Rotate(direction, angle);
if (commandLower == "rotateall")
{
foreach (MeshBuilder meshBuilder in meshBuilders)
{
meshBuilder.Rotate(direction, angle);
}
}
}
break;
case "shear":
case "shearall":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 7, lineInfo);
}
double dx = GetDoubleFromArgument(0, "dx", 0.0, lineInfo);
double dy = GetDoubleFromArgument(1, "dy", 0.0, lineInfo);
double dz = GetDoubleFromArgument(2, "dz", 0.0, lineInfo);
double sx = GetDoubleFromArgument(3, "sx", 0.0, lineInfo);
double sy = GetDoubleFromArgument(4, "sy", 0.0, lineInfo);
double sz = GetDoubleFromArgument(5, "sz", 0.0, lineInfo);
double r = GetDoubleFromArgument(6, "ratio", 0.0, lineInfo);
Vector3d direction = Vector3d.Normalize(new Vector3d(dx, dy, dz));
Vector3d shift = Vector3d.Normalize(new Vector3d(sx, sy, sz));
currentMeshBuilder.Shear(direction, shift, r);
if (commandLower == "shearall")
{
foreach (MeshBuilder meshBuilder in meshBuilders)
{
meshBuilder.Shear(direction, shift, r);
}
}
}
break;
case "color":
case "setcolor":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Color", "SetColor", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 4, lineInfo);
}
double r, g, b, a;
TryGetDoubleFromArgument(0, "red", 0.0, 255.0, 255.0, true, lineInfo, out r);
TryGetDoubleFromArgument(1, "green", 0.0, 255.0, 255.0, true, lineInfo, out g);
TryGetDoubleFromArgument(2, "blue", 0.0, 255.0, 255.0, true, lineInfo, out b);
TryGetDoubleFromArgument(3, "alpha", 0.0, 255.0, 255.0, true, lineInfo, out a);
Vector3f color = new Vector3f((float)r / 255.0f, (float)g / 255.0f, (float)b / 255.0f);
for (int i = 0; i < currentMeshBuilder.Faces.Count; i++)
{
currentMeshBuilder.Faces[i].ReflectiveColor = color;
currentMeshBuilder.Faces[i].Alpha = (float)a / 255.0f;
}
}
break;
case "emissivecolor":
case "setemissivecolor":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "EmissiveColor", "SetEmissiveColor", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double r, g, b;
TryGetDoubleFromArgument(0, "red", 0.0, 255.0, 0.0, true, lineInfo, out r);
TryGetDoubleFromArgument(1, "green", 0.0, 255.0, 0.0, true, lineInfo, out g);
TryGetDoubleFromArgument(2, "blue", 0.0, 255.0, 0.0, true, lineInfo, out b);
Vector3f color = new Vector3f((float)r / 255.0f, (float)g / 255.0f, (float)b / 255.0f);
for (int i = 0; i < currentMeshBuilder.Faces.Count; i++)
{
currentMeshBuilder.Faces[i].EmissiveColor = color;
}
}
break;
case "blendmode":
case "setblendmode":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "BlendMode", "SetBlendMode", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
string blendMode = argumentCount >= 1 && arguments[0].Length != 0 ? arguments[0] : "normal";
double glowHalfDistance;
TryGetDoubleFromArgument(1, "glowHalfDistance", 0.0, double.MaxValue, 0.0, true, lineInfo, out glowHalfDistance);
string glowAttenuationMode = argumentCount >= 3 && arguments[2].Length != 0 ? arguments[2] : "divideexponent2";
switch (blendMode.ToLowerInvariant())
{
case "normal":
break;
case "additive":
break;
default:
string text = "\"" + blendMode + "\" as argument 1 to command " + lineInfo.Command + " is not a valid blend mode on line " + lineInfo.LineNumber.ToString() + " in file \"" + lineInfo.FileInfo.File + "\".";
options.Logger.Add(text);
break;
}
switch (glowAttenuationMode.ToLowerInvariant())
{
case "divideexponent2":
break;
case "divideexponent4":
break;
default:
string text = "\"" + blendMode + "\" as argument 3 to command " + lineInfo.Command + " is not a valid glow attenuation mode on line " + lineInfo.LineNumber.ToString() + " in file \"" + lineInfo.FileInfo.File + "\".";
options.Logger.Add(text);
break;
}
// TODO: Not implemented.
}
break;
case "load":
case "loadtexture":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Load", "LoadTexture", lineInfo);
CheckArgumentCount(command, argumentCount, 1, 2, lineInfo);
}
string daytimeTexture = null;
#pragma warning disable 219
string nighttimeTexture = null;
#pragma warning restore 219
if (argumentCount >= 1 && arguments[0].Length != 0)
{
daytimeTexture = arguments[0];
}
if (argumentCount >= 2 && arguments[1].Length != 0)
{
nighttimeTexture = arguments[1];
}
if (daytimeTexture != null)
{
currentMeshBuilder.DaytimeTexture = Platform.CombineFile(Path.GetDirectoryName(file), daytimeTexture);
}
// TODO: Nighttime textures.
}
break;
case "transparent":
case "setdecaltransparentcolor":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Transparent", "SetDecalTransparentColor", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
int r, g, b;
TryGetInt32FromArgument(0, "red", 0, 255, 0, true, lineInfo, out r);
TryGetInt32FromArgument(1, "green", 0, 255, 0, true, lineInfo, out g);
TryGetInt32FromArgument(2, "blue", 0, 255, 0, true, lineInfo, out b);
currentMeshBuilder.TransparentColor = new Vector3b((byte)r, (byte)g, (byte)b);
currentMeshBuilder.TransparentColorUsed = true;
}
break;
case "coordinates":
case "settexturecoordinates":
{
if (strictParsing)
{
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Coordinates", "SetTextureCoordinates", lineInfo);
CheckArgumentCount(command, argumentCount, 1, 3, lineInfo);
}
int v = -1;
bool success;
if (currentMeshBuilder.Vertices.Count == 0)
{
string text = lineInfo.Command + " cannot be used at this point because no vertices were defined in the mesh builder on line " + lineInfo.LineNumber.ToString() + " in file \"" + lineInfo.FileInfo.File + "\".";
options.Logger.Add(text);
success = false;
}
else
{
success = TryGetInt32FromArgument(0, "vertex", 0, currentMeshBuilder.Vertices.Count - 1, 0, false, lineInfo, out v);
}
double x = GetDoubleFromArgument(1, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(2, "y", 0.0, lineInfo);
if (success)
{
currentMeshBuilder.Vertices[v].Texture = new Vector2d(x, y);
}
}
break;
default:
{
string text = "Unsupported command \"" + command + "\" found on line " + (l + 1).ToString() + " in file \"" + file + "\".";
options.Logger.Add(text);
}
break;
}
}
}
}
meshBuilders.Add(currentMeshBuilder);
currentMeshBuilder = null;
// --- assemble mesh ---
Dictionary <Vertex, int> hashedVertices = new Dictionary <Vertex, int>();
Dictionary <Material, int> hashedMaterials = new Dictionary <Material, int>();
List <Vertex> vertices = new List <Vertex>();
List <Material> materials = new List <Material>();
List <Face> faces = new List <Face>();
foreach (MeshBuilder meshBuilder in meshBuilders)
{
foreach (MeshBuilderFace meshBuilderFace in meshBuilder.Faces)
{
// --- generate normal ---
Vector3d normal;
{
Vector3d a = meshBuilder.Vertices[meshBuilderFace.Vertices[0]].Position;
Vector3d b = meshBuilder.Vertices[meshBuilderFace.Vertices[1]].Position;
Vector3d c = meshBuilder.Vertices[meshBuilderFace.Vertices[2]].Position;
normal = Vector3d.Normalize(Vector3d.Cross(b - a, c - a));
if (normal.IsZero())
{
normal = Vector3d.Up;
}
}
// --- vertices ---
Vertex[] v = new Vertex[meshBuilderFace.Vertices.Length];
for (int i = 0; i < meshBuilderFace.Vertices.Length; i++)
{
MeshBuilderVertex meshBuilderVertex = meshBuilder.Vertices[meshBuilderFace.Vertices[i]];
v[i] = new Vertex((Vector3f)meshBuilderVertex.Position, (Vector3f)meshBuilderVertex.Normal, (Vector2f)meshBuilderVertex.Texture);
if (meshBuilderFace.Normals == MeshBuilderFaceNormals.Generate || meshBuilderVertex.Normal.IsZero())
{
v[i].Normal = (Vector3f)normal;
}
else if (meshBuilderFace.Normals == MeshBuilderFaceNormals.Inverse)
{
v[i].Normal = (Vector3f)(-meshBuilderVertex.Normal);
}
}
int[] vertexIndices = new int[v.Length];
for (int i = 0; i < v.Length; i++)
{
if (!hashedVertices.TryGetValue(v[i], out vertexIndices[i]))
{
vertexIndices[i] = vertices.Count;
vertices.Add(v[i]);
hashedVertices.Add(v[i], vertexIndices[i]);
}
}
// --- material ---
Material material = new Material();
material.Alpha = meshBuilderFace.Alpha;
material.EmissiveColor = meshBuilderFace.EmissiveColor;
material.ReflectiveColor = meshBuilderFace.ReflectiveColor;
if (meshBuilder.DaytimeTexture != null)
{
if (meshBuilder.TransparentColorUsed)
{
material.Texture = options.Manager.Add(meshBuilder.DaytimeTexture, meshBuilder.TransparentColor);
}
else
{
material.Texture = options.Manager.Add(meshBuilder.DaytimeTexture);
}
}
int materialIndex;
if (!hashedMaterials.TryGetValue(material, out materialIndex))
{
materialIndex = materials.Count;
materials.Add(material);
hashedMaterials.Add(material, materialIndex);
}
// --- face ---
Face face = new Face(vertexIndices, materialIndex, meshBuilderFace.LineNumber);
faces.Add(face);
}
}
return(new Mesh(vertices.ToArray(), materials.ToArray(), faces.ToArray()));
}
internal void AddCylinder(int count, double upper, double lower, double height, int lineNumber)
{
// --- preparations ---
bool upperCap = upper > 0.0;
bool lowerCap = lower > 0.0;
upper = Math.Abs(upper);
lower = Math.Abs(lower);
// --- vertices ---
int vertexOffset = this.Vertices.Count;
Vector3d planarDirection = Vector3d.Right;
Vector3d slopedDirectionUpper;
if (height != 0.0)
{
double slopeAngle = Math.Atan((lower - upper) / height);
slopedDirectionUpper = Math.Sign(height) * (new Vector3d(Math.Cos(slopeAngle), Math.Sin(slopeAngle), 0.0));
}
else
{
slopedDirectionUpper = new Vector3d(0.0, Math.Sign(lower - upper), 0.0);
}
Vector3d slopedDirectionLower = slopedDirectionUpper;
double rotateAngle = 2.0 * Math.PI / (double)count;
Vector2d rotateVector = new Vector2d(0.5 * rotateAngle);
if (upper == 0.0)
{
slopedDirectionUpper = Vector3d.RotateXZ(slopedDirectionUpper, rotateVector);
}
if (lower == 0.0)
{
slopedDirectionLower = Vector3d.RotateXZ(slopedDirectionLower, rotateVector);
}
rotateVector = Vector2d.Rotate(rotateVector, rotateVector);
for (int i = 0; i < count; i++)
{
Vector3d positionUpper = new Vector3d(planarDirection.X * upper, 0.5 * height, planarDirection.Z * upper);
Vector3d positionLower = new Vector3d(planarDirection.X * lower, -0.5 * height, planarDirection.Z * lower);
this.Vertices.Add(new MeshBuilderVertex(positionUpper, slopedDirectionUpper, Vector2d.Zero));
this.Vertices.Add(new MeshBuilderVertex(positionLower, slopedDirectionLower, Vector2d.Zero));
planarDirection = Vector3d.RotateXZ(planarDirection, rotateVector);
slopedDirectionUpper = Vector3d.RotateXZ(slopedDirectionUpper, rotateVector);
slopedDirectionLower = Vector3d.RotateXZ(slopedDirectionLower, rotateVector);
}
// --- cylinder wall ---
if (height != 0.0 & (lower != 0.0 | upper != 0.0))
{
if (upper == 0.0)
{
for (int i = 0; i < count; i++)
{
int v0 = (2 * i);
int v1 = (2 * i + 1);
int v2 = (2 * i + 2) % (2 * count);
int v3 = (2 * i + 3) % (2 * count);
this.Faces.Add(new MeshBuilderFace(vertexOffset, new int[] { v0, v3, v1 }, lineNumber));
}
}
else if (lower == 0.0)
{
for (int i = 0; i < count; i++)
{
int v0 = (2 * i);
int v1 = (2 * i + 1);
int v2 = (2 * i + 2) % (2 * count);
int v3 = (2 * i + 3) % (2 * count);
this.Faces.Add(new MeshBuilderFace(vertexOffset, new int[] { v0, v2, v1 }, lineNumber));
}
}
else
{
for (int i = 0; i < count; i++)
{
int v0 = (2 * i);
int v1 = (2 * i + 1);
int v2 = (2 * i + 2) % (2 * count);
int v3 = (2 * i + 3) % (2 * count);
this.Faces.Add(new MeshBuilderFace(vertexOffset, new int[] { v0, v2, v3, v1 }, lineNumber));
}
}
}
// --- upper cap ---
if (upperCap)
{
int[] vertices = new int[count];
for (int i = 0; i < count; i++)
{
vertices[i] = 2 * (count - i - 1);
}
MeshBuilderFace face = new MeshBuilderFace(vertexOffset, vertices, lineNumber);
face.Normals = MeshBuilderFaceNormals.Generate;
this.Faces.Add(face);
}
// --- lower cap ---
if (lowerCap)
{
int[] vertices = new int[count];
for (int i = 0; i < count; i++)
{
vertices[i] = 2 * i + 1;
}
MeshBuilderFace face = new MeshBuilderFace(vertexOffset, vertices, lineNumber);
face.Normals = MeshBuilderFaceNormals.Generate;
this.Faces.Add(face);
}
}
internal void AddCylinder(int count, double upper, double lower, double height, int lineNumber) {
// --- preparations ---
bool upperCap = upper > 0.0;
bool lowerCap = lower > 0.0;
upper = Math.Abs(upper);
lower = Math.Abs(lower);
// --- vertices ---
int vertexOffset = this.Vertices.Count;
Vector3d planarDirection = Vector3d.Right;
Vector3d slopedDirectionUpper;
if (height != 0.0) {
// TODO: Math.Sign(height)?
double slopeAngle = Math.Atan((lower - upper) / height);
slopedDirectionUpper = Math.Sign(height) * (new Vector3d(Math.Cos(slopeAngle), Math.Sin(slopeAngle), 0.0));
} else {
// TODO: Math.Sign(height)?
slopedDirectionUpper = new Vector3d(0.0, Math.Sign(lower - upper), 0.0);
}
Vector3d slopedDirectionLower = slopedDirectionUpper;
double rotateAngle = 2.0 * Math.PI / (double)count;
Vector2d rotateVector = new Vector2d(0.5 * rotateAngle);
if (upper == 0.0) {
slopedDirectionUpper = Vector3d.RotateXZ(slopedDirectionUpper, rotateVector);
}
if (lower == 0.0) {
slopedDirectionLower = Vector3d.RotateXZ(slopedDirectionLower, rotateVector);
}
rotateVector = Vector2d.Rotate(rotateVector, rotateVector);
for (int i = 0; i < count; i++) {
Vector3d positionUpper = new Vector3d(planarDirection.X * upper, 0.5 * height, planarDirection.Z * upper);
Vector3d positionLower = new Vector3d(planarDirection.X * lower, -0.5 * height, planarDirection.Z * lower);
this.Vertices.Add(new MeshBuilderVertex(positionUpper, slopedDirectionUpper, Vector2d.Zero));
this.Vertices.Add(new MeshBuilderVertex(positionLower, slopedDirectionLower, Vector2d.Zero));
planarDirection = Vector3d.RotateXZ(planarDirection, rotateVector);
slopedDirectionUpper = Vector3d.RotateXZ(slopedDirectionUpper, rotateVector);
slopedDirectionLower = Vector3d.RotateXZ(slopedDirectionLower, rotateVector);
}
// --- cylinder wall ---
if (height != 0.0 & (lower != 0.0 | upper != 0.0)) {
if (upper == 0.0) {
for (int i = 0; i < count; i++) {
int v0 = (2 * i + 2) % (2 * count);
int v1 = (2 * i + 3) % (2 * count);
int v2 = 2 * i + 1;
this.Faces.Add(new MeshBuilderFace(vertexOffset, new int[] { v0, v1, v2 }, lineNumber));
}
} else if (lower == 0.0) {
for (int i = 0; i < count; i++) {
int v0 = (2 * i + 2) % (2 * count);
int v2 = 2 * i + 1;
int v3 = 2 * i;
this.Faces.Add(new MeshBuilderFace(vertexOffset, new int[] { v0, v2, v3 }, lineNumber));
}
} else {
for (int i = 0; i < count; i++) {
int v0 = (2 * i + 2) % (2 * count);
int v1 = (2 * i + 3) % (2 * count);
int v2 = 2 * i + 1;
int v3 = 2 * i;
this.Faces.Add(new MeshBuilderFace(vertexOffset, new int[] { v0, v1, v2, v3 }, lineNumber));
}
}
}
// --- upper cap ---
if (upperCap) {
int[] vertices = new int[count];
for (int i = 0; i < count; i++) {
vertices[i] = 2 * i + 1;
}
MeshBuilderFace face = new MeshBuilderFace(vertexOffset, vertices, lineNumber);
face.Normals = MeshBuilderFaceNormals.Generate;
this.Faces.Add(face);
}
// --- lower cap ---
if (lowerCap) {
int[] vertices = new int[count];
for (int i = 0; i < count; i++) {
vertices[i] = 2 * (count - i - 1);
}
MeshBuilderFace face = new MeshBuilderFace(vertexOffset, vertices, lineNumber);
face.Normals = MeshBuilderFaceNormals.Generate;
this.Faces.Add(face);
}
}
public override Mesh Load(string file, MeshDecodingOptions options) {
const bool strictParsing = true;
// --- preparations ---
bool isB3d = file.EndsWith(".b3d", StringComparison.OrdinalIgnoreCase);
char commandArgumentSeparator = isB3d ? ' ' : ',';
FileInformation fileInfo = new FileInformation(isB3d, file, strictParsing, options.Logger);
List<MeshBuilder> meshBuilders = new List<MeshBuilder>();
MeshBuilder currentMeshBuilder = new MeshBuilder();
bool meshBuilderPresent = false;
// --- line by line ---
string[] lines = File.ReadAllLines(file, Encoding.UTF8);
for (int l = 0; l < lines.Length; l++) {
string line = lines[l];
// --- trim comments and whitespace ---
int semicolon = line.IndexOf(';');
if (semicolon >= 0) {
line = line.Substring(0, semicolon).Trim();
} else {
line = line.Trim();
}
if (line.Length != 0) {
// --- split into command and argument sequence ---
string command;
string argumentSequence;
int separator = line.IndexOf(commandArgumentSeparator);
if (separator >= 0) {
command = line.Substring(0, separator).TrimEnd();
argumentSequence = line.Substring(separator + 1).TrimStart();
} else {
command = line;
argumentSequence = string.Empty;
}
// --- handle malformed commands ---
if (command.Length != 0) {
if (isB3d) {
int comma = command.IndexOf(',');
if (comma >= 0) {
argumentSequence = command.Substring(comma + 1).TrimStart() + ',' + argumentSequence;
command = command.Substring(0, comma).TrimEnd();
if (strictParsing) {
string text = "Command \"" + command + "\" must be separated from its arguments by a space in B3D files on line " + (l + 1).ToString() + " in file \"" + file + "\".";
options.Logger.Add(text);
}
}
} else {
int space = command.IndexOf(' ');
if (space >= 0) {
argumentSequence = command.Substring(space + 1).TrimStart() + ',' + argumentSequence;
command = command.Substring(0, space).TrimEnd();
if (strictParsing) {
string text = "Command \"" + command + "\" must be separated from its arguments by a comma in CSV files on line " + (l + 1).ToString() + " in file \"" + file + "\".";
options.Logger.Add(text);
}
}
}
}
if (command.Length != 0) {
// --- split into arguments and trim empty arguments from the end ---
string[] arguments = argumentSequence.Split(',');
for (int a = 0; a < arguments.Length; a++) {
arguments[a] = arguments[a].Trim();
}
int argumentCount = 0;
for (int a = arguments.Length - 1; a >= 0; a--) {
if (arguments[a].Length != 0) {
argumentCount = a + 1;
break;
}
}
// --- process commands ---
LineInformation lineInfo = new LineInformation(command, arguments, argumentCount, l + 1, fileInfo);
string commandLower = command.ToLowerInvariant();
switch (commandLower) {
case "[meshbuilder]":
case "createmeshbuilder":
{
if (strictParsing) {
CheckCommand(command, "[MeshBuilder]", "CreateMeshBuilder", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 0, lineInfo);
}
meshBuilders.Add(currentMeshBuilder);
currentMeshBuilder = new MeshBuilder();
meshBuilderPresent = true;
}
break;
case "vertex":
case "addvertex":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Vertex", "AddVertex", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 8, lineInfo);
}
double positionX = GetDoubleFromArgument(0, "positionX", 0.0, lineInfo);
double positionY = GetDoubleFromArgument(1, "positionY", 0.0, lineInfo);
double positionZ = GetDoubleFromArgument(2, "positionZ", 0.0, lineInfo);
double normalX = GetDoubleFromArgument(3, "normalX", 0.0, lineInfo);
double normalY = GetDoubleFromArgument(4, "normalY", 0.0, lineInfo);
double normalZ = GetDoubleFromArgument(5, "normalZ", 0.0, lineInfo);
double textureX = GetDoubleFromArgument(6, "textureX", 0.0, lineInfo);
double textureY = GetDoubleFromArgument(7, "textureY", 0.0, lineInfo);
MeshBuilderVertex vertex = new MeshBuilderVertex(new Vector3d(positionX, positionY, positionZ), new Vector3d(normalX, normalY, normalZ), new Vector2d(textureX, textureY));
currentMeshBuilder.Vertices.Add(vertex);
}
break;
case "face":
case "face2":
case "addface":
case "addface2":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
}
bool face2 = commandLower[commandLower.Length - 1] == '2';
if (strictParsing) {
string suffix = face2 ? "2" : string.Empty;
CheckCommand(command, "Face" + suffix, "AddFace" + suffix, lineInfo);
}
bool success = CheckArgumentCount(command, argumentCount, 3, int.MaxValue, lineInfo);
int[] indices = new int[argumentCount];
for (int i = 0; i < argumentCount; i++) {
if (!TryGetInt32FromArgument(i, "vertex" + (i + 1).ToString(), 0, currentMeshBuilder.Vertices.Count - 1, -1, false, lineInfo, out indices[i])) {
success = false;
}
}
if (success) {
currentMeshBuilder.Faces.Add(new MeshBuilderFace(0, indices, lineInfo.LineNumber));
if (face2) {
Array.Reverse(indices);
MeshBuilderFace face = new MeshBuilderFace(0, indices, lineInfo.LineNumber);
face.Normals = MeshBuilderFaceNormals.Inverse;
currentMeshBuilder.Faces.Add(face);
}
}
}
break;
case "cube":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", x, lineInfo);
double z = GetDoubleFromArgument(2, "z", x, lineInfo);
currentMeshBuilder.AddCube(x, y, z, lineInfo.LineNumber);
}
break;
case "cylinder":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 1, 4, lineInfo);
}
int numVertices;
bool success = TryGetInt32FromArgument(0, "numVertices", 2, int.MaxValue, 0, false, lineInfo, out numVertices);
double upper = GetDoubleFromArgument(1, "upper", 0.0, lineInfo);
double lower = GetDoubleFromArgument(2, "lower", 0.0, lineInfo);
double height = GetDoubleFromArgument(3, "height", 0.0, lineInfo);
if (success) {
currentMeshBuilder.AddCylinder(numVertices, upper, lower, height, lineInfo.LineNumber);
}
}
break;
case "[texture]":
case "generatenormals":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "[Texture]", "GenerateNormals", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 0, lineInfo);
}
}
break;
case "translate":
case "translateall":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", 0.0, lineInfo);
double z = GetDoubleFromArgument(2, "z", 0.0, lineInfo);
Vector3d offset = new Vector3d(x, y, z);
currentMeshBuilder.Translate(offset);
if (commandLower == "translateall") {
foreach (MeshBuilder meshBuilder in meshBuilders) {
meshBuilder.Translate(offset);
}
}
}
break;
case "scale":
case "scaleall":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 1.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", 1.0, lineInfo);
double z = GetDoubleFromArgument(2, "z", 1.0, lineInfo);
Vector3d factor = new Vector3d(x, y, z);
currentMeshBuilder.Scale(factor);
if (commandLower == "scaleall") {
foreach (MeshBuilder meshBuilder in meshBuilders) {
meshBuilder.Scale(factor);
}
}
}
break;
case "rotate":
case "rotateall":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 4, lineInfo);
}
double x = GetDoubleFromArgument(0, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(1, "y", 0.0, lineInfo);
double z = GetDoubleFromArgument(2, "z", 0.0, lineInfo);
double a = GetDoubleFromArgument(3, "angle", 0.0, lineInfo) * (Math.PI / 180.0);
Vector3d direction = Vector3d.Normalize(new Vector3d(x, y, z));
if (direction.IsZero()) {
direction = Vector3d.Right;
}
Vector2d angle = new Vector2d(Math.Cos(a), Math.Sin(a));
currentMeshBuilder.Rotate(direction, angle);
if (commandLower == "rotateall") {
foreach (MeshBuilder meshBuilder in meshBuilders) {
meshBuilder.Rotate(direction, angle);
}
}
}
break;
case "shear":
case "shearall":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckArgumentCount(command, argumentCount, 0, 7, lineInfo);
}
double dx = GetDoubleFromArgument(0, "dx", 0.0, lineInfo);
double dy = GetDoubleFromArgument(1, "dy", 0.0, lineInfo);
double dz = GetDoubleFromArgument(2, "dz", 0.0, lineInfo);
double sx = GetDoubleFromArgument(3, "sx", 0.0, lineInfo);
double sy = GetDoubleFromArgument(4, "sy", 0.0, lineInfo);
double sz = GetDoubleFromArgument(5, "sz", 0.0, lineInfo);
double r = GetDoubleFromArgument(6, "ratio", 0.0, lineInfo);
Vector3d direction = Vector3d.Normalize(new Vector3d(dx, dy, dz));
Vector3d shift = Vector3d.Normalize(new Vector3d(sx, sy, sz));
currentMeshBuilder.Shear(direction, shift, r);
if (commandLower == "shearall") {
foreach (MeshBuilder meshBuilder in meshBuilders) {
meshBuilder.Shear(direction, shift, r);
}
}
}
break;
case "color":
case "setcolor":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Color", "SetColor", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 4, lineInfo);
}
double r, g, b, a;
TryGetDoubleFromArgument(0, "red", 0.0, 255.0, 255.0, true, lineInfo, out r);
TryGetDoubleFromArgument(1, "green", 0.0, 255.0, 255.0, true, lineInfo, out g);
TryGetDoubleFromArgument(2, "blue", 0.0, 255.0, 255.0, true, lineInfo, out b);
TryGetDoubleFromArgument(3, "alpha", 0.0, 255.0, 255.0, true, lineInfo, out a);
Vector3f color = new Vector3f((float)r / 255.0f, (float)g / 255.0f, (float)b / 255.0f);
for (int i = 0; i < currentMeshBuilder.Faces.Count; i++) {
currentMeshBuilder.Faces[i].ReflectiveColor = color;
currentMeshBuilder.Faces[i].Alpha = (float)a / 255.0f;
}
}
break;
case "emissivecolor":
case "setemissivecolor":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "EmissiveColor", "SetEmissiveColor", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
double r, g, b;
TryGetDoubleFromArgument(0, "red", 0.0, 255.0, 0.0, true, lineInfo, out r);
TryGetDoubleFromArgument(1, "green", 0.0, 255.0, 0.0, true, lineInfo, out g);
TryGetDoubleFromArgument(2, "blue", 0.0, 255.0, 0.0, true, lineInfo, out b);
Vector3f color = new Vector3f((float)r / 255.0f, (float)g / 255.0f, (float)b / 255.0f);
for (int i = 0; i < currentMeshBuilder.Faces.Count; i++) {
currentMeshBuilder.Faces[i].EmissiveColor = color;
}
}
break;
case "blendmode":
case "setblendmode":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "BlendMode", "SetBlendMode", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
string blendMode = argumentCount >= 1 && arguments[0].Length != 0 ? arguments[0] : "normal";
double glowHalfDistance;
TryGetDoubleFromArgument(1, "glowHalfDistance", 0.0, double.MaxValue, 0.0, true, lineInfo, out glowHalfDistance);
string glowAttenuationMode = argumentCount >= 3 && arguments[2].Length != 0 ? arguments[2] : "divideexponent2";
switch (blendMode.ToLowerInvariant()) {
case "normal":
break;
case "additive":
break;
default:
string text = "\"" + blendMode + "\" as argument 1 to command " + lineInfo.Command + " is not a valid blend mode on line " + lineInfo.LineNumber.ToString() + " in file \"" + lineInfo.FileInfo.File + "\".";
options.Logger.Add(text);
break;
}
switch (glowAttenuationMode.ToLowerInvariant()) {
case "divideexponent2":
break;
case "divideexponent4":
break;
default:
string text = "\"" + blendMode + "\" as argument 3 to command " + lineInfo.Command + " is not a valid glow attenuation mode on line " + lineInfo.LineNumber.ToString() + " in file \"" + lineInfo.FileInfo.File + "\".";
options.Logger.Add(text);
break;
}
// TODO: Not implemented.
}
break;
case "load":
case "loadtexture":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Load", "LoadTexture", lineInfo);
CheckArgumentCount(command, argumentCount, 1, 2, lineInfo);
}
string daytimeTexture = null;
string nighttimeTexture = null;
if (argumentCount >= 1 && arguments[0].Length != 0) {
daytimeTexture = arguments[0];
}
if (argumentCount >= 2 && arguments[1].Length != 0) {
nighttimeTexture = arguments[1];
}
if (daytimeTexture != null) {
currentMeshBuilder.DaytimeTexture = Platform.CombineFile(Path.GetDirectoryName(file), daytimeTexture);
}
// TODO: Nighttime textures.
}
break;
case "transparent":
case "setdecaltransparentcolor":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Transparent", "SetDecalTransparentColor", lineInfo);
CheckArgumentCount(command, argumentCount, 0, 3, lineInfo);
}
int r, g, b;
TryGetInt32FromArgument(0, "red", 0, 255, 0, true, lineInfo, out r);
TryGetInt32FromArgument(1, "green", 0, 255, 0, true, lineInfo, out g);
TryGetInt32FromArgument(2, "blue", 0, 255, 0, true, lineInfo, out b);
currentMeshBuilder.TransparentColor = new Vector3b((byte)r, (byte)g, (byte)b);
currentMeshBuilder.TransparentColorUsed = true;
}
break;
case "coordinates":
case "settexturecoordinates":
{
if (strictParsing) {
CheckMeshBuilderPresence(command, lineInfo, ref meshBuilderPresent);
CheckCommand(command, "Coordinates", "SetTextureCoordinates", lineInfo);
CheckArgumentCount(command, argumentCount, 1, 3, lineInfo);
}
int v = -1;
bool success;
if (currentMeshBuilder.Vertices.Count == 0) {
string text = lineInfo.Command + " cannot be used at this point because no vertices were defined in the mesh builder on line " + lineInfo.LineNumber.ToString() + " in file \"" + lineInfo.FileInfo.File + "\".";
options.Logger.Add(text);
success = false;
} else {
success = TryGetInt32FromArgument(0, "vertex", 0, currentMeshBuilder.Vertices.Count - 1, 0, false, lineInfo, out v);
}
double x = GetDoubleFromArgument(1, "x", 0.0, lineInfo);
double y = GetDoubleFromArgument(2, "y", 0.0, lineInfo);
if (success) {
currentMeshBuilder.Vertices[v].Texture = new Vector2d(x, y);
}
}
break;
default:
{
string text = "Unsupported command \"" + command + "\" found on line " + (l + 1).ToString() + " in file \"" + file + "\".";
options.Logger.Add(text);
}
break;
}
}
}
}
meshBuilders.Add(currentMeshBuilder);
currentMeshBuilder = null;
// --- assemble mesh ---
Dictionary<Vertex, int> hashedVertices = new Dictionary<Vertex, int>();
Dictionary<Material, int> hashedMaterials = new Dictionary<Material, int>();
List<Vertex> vertices = new List<Vertex>();
List<Material> materials = new List<Material>();
List<Face> faces = new List<Face>();
foreach (MeshBuilder meshBuilder in meshBuilders) {
foreach (MeshBuilderFace meshBuilderFace in meshBuilder.Faces) {
// --- generate normal ---
Vector3d normal;
{
Vector3d a = meshBuilder.Vertices[meshBuilderFace.Vertices[0]].Position;
Vector3d b = meshBuilder.Vertices[meshBuilderFace.Vertices[1]].Position;
Vector3d c = meshBuilder.Vertices[meshBuilderFace.Vertices[2]].Position;
normal = Vector3d.Normalize(Vector3d.Cross(b - a, c - a));
if (normal.IsZero()) {
normal = Vector3d.Up;
}
}
// --- vertices ---
Vertex[] v = new Vertex[meshBuilderFace.Vertices.Length];
for (int i = 0; i < meshBuilderFace.Vertices.Length; i++) {
MeshBuilderVertex meshBuilderVertex = meshBuilder.Vertices[meshBuilderFace.Vertices[i]];
v[i] = new Vertex((Vector3f)meshBuilderVertex.Position, (Vector3f)meshBuilderVertex.Normal, (Vector2f)meshBuilderVertex.Texture);
if (meshBuilderFace.Normals == MeshBuilderFaceNormals.Generate || meshBuilderVertex.Normal.IsZero()) {
v[i].Normal = (Vector3f)normal;
} else if (meshBuilderFace.Normals == MeshBuilderFaceNormals.Inverse) {
v[i].Normal = (Vector3f)(-meshBuilderVertex.Normal);
}
}
int[] vertexIndices = new int[v.Length];
for (int i = 0; i < v.Length; i++) {
if (!hashedVertices.TryGetValue(v[i], out vertexIndices[i])) {
vertexIndices[i] = vertices.Count;
vertices.Add(v[i]);
hashedVertices.Add(v[i], vertexIndices[i]);
}
}
// --- material ---
Material material = new Material();
material.Alpha = meshBuilderFace.Alpha;
material.EmissiveColor = meshBuilderFace.EmissiveColor;
material.ReflectiveColor = meshBuilderFace.ReflectiveColor;
if (meshBuilder.DaytimeTexture != null) {
if (meshBuilder.TransparentColorUsed) {
material.Texture = options.Manager.Add(meshBuilder.DaytimeTexture, meshBuilder.TransparentColor);
} else {
material.Texture = options.Manager.Add(meshBuilder.DaytimeTexture);
}
}
int materialIndex;
if (!hashedMaterials.TryGetValue(material, out materialIndex)) {
materialIndex = materials.Count;
materials.Add(material);
hashedMaterials.Add(material, materialIndex);
}
// --- face ---
Face face = new Face(vertexIndices, materialIndex, meshBuilderFace.LineNumber);
faces.Add(face);
}
}
return new Mesh(vertices.ToArray(), materials.ToArray(), faces.ToArray());
}
