private static int parseHeader(StreamReader reader, PLYFileHeader header)
{
int lineNumber = 0;
string temp = getNewLine(reader, ref lineNumber);
if (!temp.Equals("ply"))
{
MainMethod.reportError("Warning file does match ply specifiction.");
return -1;
}
while (!temp.Equals("end_header") && reader.Peek() > -1)
{
temp = getNewLine(reader, ref lineNumber);
if (String.IsNullOrWhiteSpace(temp))
{
continue;
}
string[] pieces = temp.Split(' ');
switch (pieces[0])
{
case "element":
if (pieces.Length == 3)
{
switch (pieces[1])
{
case "vertex":
header.vertexCount = Convert.ToInt32(pieces[2]);
break;
case "face":
header.faceCount = Convert.ToInt32(pieces[2]);
break;
}
}
break;
case "property":
if(pieces.Length != 3)
{
if (pieces.Length == 5 || pieces[1] == "list")
{
}
else
{
//Bad Line
MainMethod.reportError("Error, PLY property line " + lineNumber + " isn't complete.");
return -1;
}
}
switch (pieces[2])
{
case "x":
header.xIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "y":
header.yIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "z":
header.zIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "nx":
header.normalXIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "ny":
header.normalYIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "nz":
header.normalZIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "red":
header.redIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "green":
header.greenIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "blue":
header.blueIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
case "alpha":
header.alphaIndex = header.vertexPropertyCount;
header.vertexPropertyCount++;
break;
}
break;
}
}
if (reader.Peek() <= -1)
{
MainMethod.reportError("Warning ply file header does not end.");
return -1;
}
return lineNumber;
}
public static void parsePLYFile(String fileName, CornerTableMesh container)
{
int lineNumber = 0;
StreamReader reader = null;
string temp = null;
if (!fileName.EndsWith(".ply"))
{
MainMethod.reportError("PolyGonFileParser.parsePLYFile : Filename: \"" + fileName + "\" does not appear to be a polygon file");
}
try
{
reader = new StreamReader(fileName);
}
catch (FileNotFoundException fnfe)
{
MainMethod.reportError("PolygonFilePasrer.parsePLYFile : Error could not find file. Exception message:" + fnfe.Message);
return;
}
PLYFileHeader header = new PLYFileHeader();
lineNumber = parseHeader(reader, header);
if (lineNumber < 0)
{
return;
}
List<Colour4f> colourList = new List<Colour4f>();
OpenTK.Vector3 tempPosition = new OpenTK.Vector3(0.0f, 0.0f, 0.0f);
OpenTK.Vector3 tempNormal = new OpenTK.Vector3(0.0f, 0.0f, 0.0f);
Colour4f tempColour = new Colour4f(0.0f, 0.0f, 0.0f, 0.0f);
int vertexIndex = 0;
int faceIndex = 0;
int triangleIndex = 0;
while (reader.Peek() > -1)
{
temp = getNewLine(reader, ref lineNumber);
//First Parse Vertices
if (vertexIndex < header.vertexCount)
{
if (String.IsNullOrWhiteSpace(temp))
{
continue;
}
vertexIndex++;
tempPosition.X = 0.0f;
tempPosition.Y = 0.0f;
tempPosition.Z = 0.0f;
tempColour.red = Config.convertSettingToFloat("colours", "corner_default_red");
tempColour.green = Config.convertSettingToFloat("colours", "corner_default_green");
tempColour.blue = Config.convertSettingToFloat("colours", "corner_default_blue");
tempColour.alpha = Config.convertSettingToFloat("colours", "corner_default_alpha");
string[] pieces = temp.Split(' ');
if (header.xIndex >= 0)
{
tempPosition.X = float.Parse(pieces[header.xIndex]);
}
if (header.yIndex >= 0)
{
tempPosition.Y = float.Parse(pieces[header.yIndex]);
}
if (header.zIndex >= 0)
{
tempPosition.Z = float.Parse(pieces[header.zIndex]);
}
if(header.normalXIndex >= 0)
{
tempNormal.X = float.Parse(pieces[header.normalXIndex]);
}
if(header.normalYIndex >= 0)
{
tempNormal.Y = float.Parse(pieces[header.normalYIndex]);
}
if(header.normalZIndex >= 0)
{
tempNormal.Z = float.Parse(pieces[header.normalZIndex]);
}
if (header.redIndex >= 0)
{
tempColour.red = float.Parse(pieces[header.redIndex]);
}
if (header.greenIndex >= 0)
{
tempColour.green = float.Parse(pieces[header.greenIndex]);
}
if (header.blueIndex >= 0)
{
tempColour.blue = float.Parse(pieces[header.blueIndex]);
}
if (header.alphaIndex >= 0)
{
tempColour.alpha = float.Parse(pieces[header.alphaIndex]);
}
if (header.normalXIndex != -1 && header.normalYIndex != -1 && header.normalZIndex != -1)
{
container.vertices.Add(new Vertex3f(tempPosition, tempNormal));
}
else
{
container.vertices.Add(new Vertex3f(tempPosition));
}
colourList.Add(new Colour4f(tempColour));
if (vertexIndex == header.vertexCount)
{
header.vertexIndexConversion = weldVertices(ref container.vertices);
}
}
else if (faceIndex < header.faceCount)
{
if (String.IsNullOrWhiteSpace(temp))
{
continue;
}
String[] pieces = temp.Split(' ');
if (pieces.Length < 4)
{
MainMethod.reportError("Not enough information on line: " + lineNumber + " to make a face.");
continue;
}
faceIndex++;
if (pieces[0] == "3")
{
Corner tempCornerOne = new Corner(header.vertexIndexConversion[int.Parse(pieces[1])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[1])]], colourList[int.Parse(pieces[1])], triangleIndex);
Corner tempCornerTwo = new Corner(header.vertexIndexConversion[int.Parse(pieces[2])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[2])]], colourList[int.Parse(pieces[2])], triangleIndex);
Corner tempCornerThree = new Corner(header.vertexIndexConversion[int.Parse(pieces[3])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[3])]], colourList[int.Parse(pieces[3])], triangleIndex);
container.triangles.Add(tempCornerOne);
container.triangles.Add(tempCornerTwo);
container.triangles.Add(tempCornerThree);
triangleIndex++;
}
else if (pieces[0] == "4")
{
Corner tempCornerOne = new Corner(header.vertexIndexConversion[int.Parse(pieces[1])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[1])]], colourList[int.Parse(pieces[1])], triangleIndex);
Corner tempCornerTwo = new Corner(header.vertexIndexConversion[int.Parse(pieces[2])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[2])]], colourList[int.Parse(pieces[2])], triangleIndex);
Corner tempCornerThree = new Corner(header.vertexIndexConversion[int.Parse(pieces[3])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[3])]], colourList[int.Parse(pieces[3])], triangleIndex);
triangleIndex++;
Corner tempCornerFour = new Corner(header.vertexIndexConversion[int.Parse(pieces[1])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[1])]], colourList[int.Parse(pieces[1])], triangleIndex);
Corner tempCornerFive = new Corner(header.vertexIndexConversion[int.Parse(pieces[3])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[3])]], colourList[int.Parse(pieces[3])], triangleIndex);
Corner tempCornerSix = new Corner(header.vertexIndexConversion[int.Parse(pieces[4])], container.vertices[header.vertexIndexConversion[int.Parse(pieces[4])]], colourList[int.Parse(pieces[4])], triangleIndex);
//Corner tempCornerFour = new Corner(int.Parse(pieces[1]), container.vertices[int.Parse(pieces[1])], colourList[int.Parse(pieces[1])], triangleIndex);
//Corner tempCornerFive = new Corner(int.Parse(pieces[3]), container.vertices[int.Parse(pieces[3])], colourList[int.Parse(pieces[3])], triangleIndex);
//Corner tempCornerSix = new Corner(int.Parse(pieces[4]), container.vertices[int.Parse(pieces[4])], colourList[int.Parse(pieces[4])], triangleIndex);
triangleIndex++;
container.triangles.Add(tempCornerOne);
container.triangles.Add(tempCornerTwo);
container.triangles.Add(tempCornerThree);
container.triangles.Add(tempCornerFour);
container.triangles.Add(tempCornerFive);
container.triangles.Add(tempCornerSix);
}
else
{
MainMethod.reportError("Error program does not support meshes that are not quads or triangles");
}
}
else
{
//We dont' care about lines
}
}
reader.Close();
}