/// <summary>
///
/// </summary>
/// <param name="semantic"></param>
/// <param name="values"></param>
/// <param name="vertex"></param>
/// <param name="vertices"></param>
private void ProcessInput(Input_Semantic semantic, string source, int set, IOVertex vertex, Vertices vertices, int index, SourceManager srcs, List <IOEnvelope> vertexEnvelopes)
{
var values = srcs.GetFloatValue(source, index);
switch (semantic)
{
case Input_Semantic.VERTEX:
// process per vertex input
foreach (var vertInput in vertices.Input)
{
ProcessInput(vertInput.Semantic, vertInput.source, 0, vertex, vertices, index, srcs, vertexEnvelopes);
}
// load envelopes if availiable
if (vertexEnvelopes != null && index < vertexEnvelopes.Count)
{
// copy bone weights
var en = vertexEnvelopes[index];
for (int i = 0; i < en.Weights.Count; i++)
{
vertex.Envelope.Weights.Add(new IOBoneWeight()
{
BoneName = en.Weights[i].BoneName,
Weight = en.Weights[i].Weight,
BindMatrix = en.Weights[i].BindMatrix
});
}
// make the bind matrix as being used
vertex.Envelope.UseBindMatrix = true;
}
break;
case Input_Semantic.POSITION:
vertex.Position = new Vector3(
values.Length > 0 ? values[0] : 0,
values.Length > 1 ? values[1] : 0,
values.Length > 2 ? values[2] : 0);
break;
case Input_Semantic.NORMAL:
vertex.Normal = new Vector3(
values.Length > 0 ? values[0] : 0,
values.Length > 1 ? values[1] : 0,
values.Length > 2 ? values[2] : 0);
break;
case Input_Semantic.TANGENT:
vertex.Tangent = new Vector3(
values.Length > 0 ? values[0] : 0,
values.Length > 1 ? values[1] : 0,
values.Length > 2 ? values[2] : 0);
break;
case Input_Semantic.BINORMAL:
vertex.Binormal = new Vector3(
values.Length > 0 ? values[0] : 0,
values.Length > 1 ? values[1] : 0,
values.Length > 2 ? values[2] : 0);
break;
case Input_Semantic.TEXCOORD:
vertex.SetUV(
values.Length > 0 ? values[0] : 0,
values.Length > 1 ? values[1] : 0,
set);
break;
case Input_Semantic.COLOR:
vertex.SetColor(
values.Length > 0 ? values[0] : 0,
values.Length > 1 ? values[1] : 0,
values.Length > 2 ? values[2] : 0,
values.Length > 3 ? values[3] : 0,
set);
break;
}
}
/// <summary>
///
/// </summary>
/// <param name="n"></param>
/// <param name="id"></param>
/// <returns></returns>
public IOMesh LoadGeometryControllerFromID(Node n, string id)
{
// sanitize
id = ColladaHelper.SanitizeID(id);
// find geometry by id
var con = _collada.Library_Controllers.Controller.FirstOrDefault(e => e.ID == id);
// not found
if (con == null)
{
return(null);
}
// load controllers
SourceManager srcs = new SourceManager();
foreach (var src in con.Skin.Source)
{
srcs.AddSource(src);
}
var v = con.Skin.Vertex_Weights.V.GetValues();
var counts = con.Skin.Vertex_Weights.VCount.GetValues();
var vi = 0;
var vertexIndex = 0;
List <IOEnvelope> envelopes = new List <IOEnvelope>();
for (int i = 0; i < con.Skin.Vertex_Weights.Count; i++)
{
var en = new IOEnvelope();
var stride = con.Skin.Vertex_Weights.Input.Length;
for (int j = 0; j < counts[i]; j++)
{
IOBoneWeight bw = new IOBoneWeight();
foreach (var input in con.Skin.Vertex_Weights.Input)
{
var index = v[vi + input.Offset + j * stride];
switch (input.Semantic)
{
case Input_Semantic.JOINT:
foreach (var jointInput in con.Skin.Joints.Input)
{
switch (jointInput.Semantic)
{
case Input_Semantic.JOINT:
bw.BoneName = srcs.GetNameValue(jointInput.source, index)[0];
break;
case Input_Semantic.INV_BIND_MATRIX:
var m = srcs.GetFloatValue(jointInput.source, index);
var t = new Matrix4x4(
m[0], m[4], m[8], m[12],
m[1], m[5], m[9], m[13],
m[2], m[6], m[10], m[14],
m[3], m[7], m[11], m[15]);
bw.BindMatrix = t;
break;
}
}
break;
case Input_Semantic.WEIGHT:
bw.Weight = srcs.GetFloatValue(input.source, index)[0];
break;
}
}
en.Weights.Add(bw);
}
envelopes.Add(en);
vi += counts[i] * stride;
vertexIndex++;
}
// load geometry
var geom = string.IsNullOrEmpty(con.Skin.sourceid) ? LoadGeometryFromID(n, con.Skin.sID, envelopes) : LoadGeometryFromID(n, con.Skin.sourceid, envelopes);
// bind shape
if (con.Skin.Bind_Shape_Matrix != null)
{
var m = con.Skin.Bind_Shape_Matrix.GetValues();
var t = new Matrix4x4(
m[0], m[4], m[8], m[12],
m[1], m[5], m[9], m[13],
m[2], m[6], m[10], m[14],
m[3], m[7], m[11], m[15]);
geom.TransformVertices(t);
}
return(geom);
}
