private PlyElement ReadElement(PlyElementType elementType)
{
var propertyValues = new object[elementType.Properties.Count];
var tokens = new Queue <string>(CurrentLine.Split(' '));
foreach (var property in elementType.Properties.Values.OrderBy(p => p.Index))
{
if (property.IsList)
{
var listElementCount = int.Parse(tokens.Dequeue());
var list = new object[listElementCount];
for (var i = 0; i < list.Length; i++)
{
list[i] = ParseValue(property.TypeName, tokens.Dequeue());
}
propertyValues[property.Index] = list;
}
else
{
propertyValues[property.Index] = ParseValue(property.TypeName, tokens.Dequeue());
}
}
NextLine();
return(new PlyElement(elementType, propertyValues));
}
static void VerifySimplePropertiesExist(PlyElementType elementType, params string[] propertyNames)
{
foreach (var name in propertyNames) {
if (!elementType.Properties.ContainsKey(name)) {
throw new Exception(
string.Format("The element type \"{0}\" does not contain a \"{1}\" property.", elementType.Name, name));
}
if (elementType.Properties[name].IsList) {
throw new Exception(
string.Format("Property \"{1}\" of element type \"{0}\" was expected to be a simple property, not a list.", elementType.Name, name));
}
}
}
static void VerifyListPropertiesExist(PlyElementType elementType, params string[] propertyNames)
{
foreach (var name in propertyNames)
{
if (!elementType.Properties.ContainsKey(name))
{
throw new Exception(
string.Format("The element type \"{0}\" does not contain a \"{1}\" property.", elementType.Name, name));
}
if (!elementType.Properties[name].IsList)
{
throw new Exception(
string.Format("Property \"{1}\" of element type \"{0}\" was expected to be a list property.", elementType.Name, name));
}
}
}
private PlyElementType ReadElementType()
{
var tokens = CurrentLine.Split(' ');
if (tokens.Length != 3)
{
throw new Exception(
string.Format(
"Incorrect number of tokens in element type line: \"{0}\". "
+ "Element types should be in the format: \"element <element_type> <element_count>\".", CurrentLine));
}
if (tokens[0] != "element")
{
throw new Exception("Invalid element type line. Element types must start with the word \"element\".");
}
int count;
if (!int.TryParse(tokens[2], out count))
{
throw new Exception(
string.Format("Invalid element count: \"{0}\"", tokens[2]));
}
var elementType = new PlyElementType {
Name = tokens[1],
Count = count
};
while (NextHeaderLine().StartsWith("property"))
{
elementType.AddProperty(ReadProperty());
}
return(elementType);
}
public void AddElementType(PlyElementType elementType)
{
ElementTypes.Add(elementType.Name, elementType);
}
private PlyElement ReadElement(PlyElementType elementType)
{
var propertyValues = new object[elementType.Properties.Count];
var tokens = new Queue<string>(CurrentLine.Split(' '));
foreach(var property in elementType.Properties.Values.OrderBy(p => p.Index)) {
if (property.IsList) {
var listElementCount = int.Parse(tokens.Dequeue());
var list = new object[listElementCount];
for(var i = 0; i < list.Length; i++) {
list[i] = ParseValue(property.TypeName, tokens.Dequeue());
}
propertyValues[property.Index] = list;
}
else {
propertyValues[property.Index] = ParseValue(property.TypeName, tokens.Dequeue());
}
}
NextLine();
return new PlyElement(elementType, propertyValues);
}
private PlyElementType ReadElementType()
{
var tokens = CurrentLine.Split(' ');
if (tokens.Length != 3)
throw new Exception(
string.Format(
"Incorrect number of tokens in element type line: \"{0}\". "
+ "Element types should be in the format: \"element <element_type> <element_count>\".", CurrentLine));
if (tokens[0] != "element")
throw new Exception("Invalid element type line. Element types must start with the word \"element\".");
int count;
if (!int.TryParse(tokens[2], out count))
throw new Exception(
string.Format("Invalid element count: \"{0}\"", tokens[2]));
var elementType = new PlyElementType {
Name = tokens[1],
Count = count
};
while(NextHeaderLine().StartsWith("property")) {
elementType.AddProperty(ReadProperty());
}
return elementType;
}
public void AddElementType(PlyElementType elementType)
{
ElementTypes.Add(elementType.Name, elementType);
}