private void ImportVertices()
{
var vertexSemantics = new Dictionary <String, List <Vector3> >();
foreach (var input in Mesh.vertices.input)
{
ColladaSource inputSource = FindSource(input.source);
var vertices = ColladaHelpers.SourceToPositions(inputSource);
vertexSemantics.Add(input.semantic, vertices);
}
List <Vector3> vertexPositions = null;
List <Vector3> perVertexNormals = null;
List <Vector3> perVertexTangents = null;
List <Vector3> perVertexBinormals = null;
vertexSemantics.TryGetValue("POSITION", out vertexPositions);
vertexSemantics.TryGetValue("NORMAL", out perVertexNormals);
vertexSemantics.TryGetValue("TANGENT", out perVertexTangents);
vertexSemantics.TryGetValue("BINORMAL", out perVertexBinormals);
foreach (var input in Inputs)
{
if (input.semantic == "VERTEX")
{
VertexInputIndex = (int)input.offset;
}
else if (input.semantic == "NORMAL")
{
var normalsSource = FindSource(input.source);
Normals = ColladaHelpers.SourceToPositions(normalsSource);
NormalsInputIndex = (int)input.offset;
}
else if (input.semantic == "TANGENT")
{
var tangentsSource = FindSource(input.source);
Tangents = ColladaHelpers.SourceToPositions(tangentsSource);
TangentsInputIndex = (int)input.offset;
}
else if (input.semantic == "BINORMAL")
{
var binormalsSource = FindSource(input.source);
Binormals = ColladaHelpers.SourceToPositions(binormalsSource);
BinormalsInputIndex = (int)input.offset;
}
}
if (VertexInputIndex == -1)
{
throw new ParsingException("Required triangle input semantic missing: VERTEX");
}
Vertices = new List <Vertex>(vertexPositions.Count);
for (var vert = 0; vert < vertexPositions.Count; vert++)
{
var vertex = OutputVertexType.CreateInstance();
vertex.Position = vertexPositions[vert];
if (perVertexNormals != null)
{
vertex.Normal = perVertexNormals[vert];
}
if (perVertexTangents != null)
{
vertex.Tangent = perVertexTangents[vert];
}
if (perVertexBinormals != null)
{
vertex.Binormal = perVertexBinormals[vert];
}
Vertices.Add(vertex);
}
HasNormals = perVertexNormals != null || NormalsInputIndex != -1;
HasTangents = (perVertexTangents != null || TangentsInputIndex != -1) &&
(perVertexBinormals != null || BinormalsInputIndex != -1);
}
private void ImportVertices()
{
var vertexSemantics = new Dictionary <String, List <Vector3> >();
foreach (var input in Mesh.vertices.input)
{
if (input.source[0] != '#')
{
throw new ParsingException("Only ID references are supported for vertex input sources");
}
ColladaSource inputSource = null;
if (!Sources.TryGetValue(input.source.Substring(1), out inputSource))
{
throw new ParsingException("Vertex input source does not exist: " + input.source);
}
List <Single> x = null, y = null, z = null;
if (!inputSource.FloatParams.TryGetValue("X", out x) ||
!inputSource.FloatParams.TryGetValue("Y", out y) ||
!inputSource.FloatParams.TryGetValue("Z", out z))
{
throw new ParsingException("Vertex input source " + input.source + " must have X, Y, Z float attributes");
}
var vertices = new List <Vector3>(x.Count);
for (var i = 0; i < x.Count; i++)
{
vertices.Add(new Vector3(x[i], y[i], z[i]));
}
vertexSemantics.Add(input.semantic, vertices);
}
List <Vector3> positions = null;
List <Vector3> normals = null;
List <Vector3> tangents = null;
List <Vector3> binormals = null;
vertexSemantics.TryGetValue("POSITION", out positions);
vertexSemantics.TryGetValue("NORMAL", out normals);
vertexSemantics.TryGetValue("TANGENT", out tangents);
vertexSemantics.TryGetValue("BINORMAL", out binormals);
int normalInputIndex = -1;
foreach (var input in Inputs)
{
if (input.semantic == "VERTEX")
{
VertexInputIndex = (int)input.offset;
}
else if (input.semantic == "NORMAL")
{
normals = new List <Vector3>();
normalInputIndex = (int)input.offset;
if (input.source[0] != '#')
{
throw new ParsingException("Only ID references are supported for Normal input sources");
}
ColladaSource inputSource = null;
if (!Sources.TryGetValue(input.source.Substring(1), out inputSource))
{
throw new ParsingException("Normal input source does not exist: " + input.source);
}
List <Single> x = null, y = null, z = null;
if (!inputSource.FloatParams.TryGetValue("X", out x) ||
!inputSource.FloatParams.TryGetValue("Y", out y) ||
!inputSource.FloatParams.TryGetValue("Z", out z))
{
throw new ParsingException("Normal input source " + input.source + " must have X, Y, Z float attributes");
}
for (var i = 0; i < x.Count; i++)
{
normals.Add(new Vector3(x[i], y[i], z[i]));
}
}
}
if (VertexInputIndex == -1)
{
throw new ParsingException("Required triangle input semantic missing: VERTEX");
}
Vertices = new List <Vertex>(positions.Count);
for (var vert = 0; vert < positions.Count; vert++)
{
var vertex = OutputVertexType.CreateInstance();
vertex.Position = positions[vert];
if (tangents != null)
{
vertex.Tangent = tangents[vert];
}
if (binormals != null)
{
vertex.Binormal = binormals[vert];
}
if (normals != null && normalInputIndex == -1)
{
vertex.Normal = normals[vert];
}
Vertices.Add(vertex);
}
if (normalInputIndex != -1)
{
Normals = normals;
NormalsInputIndex = normalInputIndex;
}
HasNormals = normals != null;
HasTangents = tangents != null && binormals != null;
}