/// <summary>
/// Convert a list of Grendgine_Collada_Float_Array to an array of Vectors
/// </summary>
private List <Vector3D> FloatToVectorArray(Grendgine_Collada_Float_Array colArray)
{
List <Vector3D> vecArray = new List <Vector3D>(colArray.Count / 3);
float[] array = colArray.Value();
for (int i = 0; i < colArray.Count / 3; i++)
{
vecArray.Add(new Vector3D(
array[i * 3],
array[i * 3 + 2],
array[i * 3 + 1]));
}
return(vecArray);
}
public void Import(string fileName)
{
// Only need to Update the HEADER, and Animation.Duration, ASETHEADER is auto handled
this.File = new BrgFile();
BrgFile model = this.File; // just ref here so I don't have to rename model to this.File
Grendgine_Collada cModel = Grendgine_Collada.Grendgine_Load_File(fileName);
//Materials
BrgMaterial mat = new BrgMaterial(model);
model.Materials.Add(mat);
mat.AmbientColor = new Color3D();
mat.DiffuseColor = new Color3D();
mat.SpecularColor = new Color3D(0.5f);
mat.SpecularExponent = 5;
mat.Id = 100;
mat.Opacity = 1f;
mat.Flags |= BrgMatFlag.HasTexture | BrgMatFlag.SpecularExponent;
model.Header.NumMaterials = model.Materials.Count();
//Meshes
foreach (Grendgine_Collada_Geometry geo in cModel.Library_Geometries.Geometry)
{
BrgMesh mesh = new BrgMesh(model);
model.Meshes.Add(mesh);
mesh.Header.Flags |= BrgMeshFlag.MATERIAL;
mesh.Header.Flags |= model.Meshes.Count == 1 ? 0 : BrgMeshFlag.SECONDARYMESH;
mesh.Header.AnimationType |= BrgMeshAnimType.KeyFrame;
mesh.Header.Format |= 0;
mesh.ExtendedHeader.NumMaterials = (byte)model.Header.NumMaterials;
mesh.ExtendedHeader.AnimationLength = 30;
mesh.ExtendedHeader.NumUniqueMaterials = 0;
string polyVertSourceID;
string polyNormalsSourceID;
string materialID;
int[] vertCountPerPoly;
int[] vertLinkPerPoly;
int[] vertNormalBindings;
//Locate the vertices and convert them
string vertexPosSourceID = geo.Mesh.Vertices.Input.First <Grendgine_Collada_Input_Unshared>(x => x.Semantic == Grendgine_Collada_Input_Semantic.POSITION).source;
Grendgine_Collada_Float_Array vertsArray = FindSourceByID(geo.Mesh, vertexPosSourceID).Float_Array;
mesh.Vertices = FloatToVectorArray(vertsArray);
mesh.Header.NumVertices = (short)mesh.Vertices.Count;
//Check for polygons otherwise skip mesh
if (geo.Mesh.Polylist != null || geo.Mesh.Polylist.Length > 0)
{
mesh.Header.NumFaces = (short)geo.Mesh.Polylist[0].Count;
polyVertSourceID = geo.Mesh.Polylist[0].Input.First <Grendgine_Collada_Input_Unshared>(x => x.Semantic == Grendgine_Collada_Input_Semantic.VERTEX).source;
polyNormalsSourceID = geo.Mesh.Polylist[0].Input.First <Grendgine_Collada_Input_Unshared>(x => x.Semantic == Grendgine_Collada_Input_Semantic.NORMAL).source;
vertCountPerPoly = geo.Mesh.Polylist[0].VCount.Value();
materialID = geo.Mesh.Polylist[0].Material;
vertLinkPerPoly = geo.Mesh.Polylist[0].P.Value();
mesh.Faces = new List <Face>(mesh.Header.NumFaces);
vertNormalBindings = new int[mesh.Header.NumVertices];
int polyindex = 0;
Face ff;
foreach (int count in vertCountPerPoly)
{
if (count == 3) //If triangle
{
ff = new Face();
ff.Indices = new List <short>(3);
ff.Indices.Add((short)vertLinkPerPoly[polyindex]);
ff.Indices.Add((short)vertLinkPerPoly[polyindex + 4]);
ff.Indices.Add((short)vertLinkPerPoly[polyindex + 2]);
//List correct normal bindings
vertNormalBindings[ff.Indices[0]] = vertLinkPerPoly[polyindex + 1];
vertNormalBindings[ff.Indices[1]] = vertLinkPerPoly[polyindex + 5];
vertNormalBindings[ff.Indices[2]] = vertLinkPerPoly[polyindex + 3];
//Bind materials
if (mesh.Header.Flags.HasFlag(BrgMeshFlag.MATERIAL))
{
ff.MaterialIndex = (short)mat.Id;
}
mesh.Faces.Add(ff);
}
polyindex += count * 2; //Including face normal bindings
}
}
else
{
break;
}
//Locate the vertex normals
Grendgine_Collada_Float_Array normalsArray = FindSourceByID(geo.Mesh, polyNormalsSourceID).Float_Array;
if (normalsArray.Count != vertsArray.Count)
{
System.Windows.Forms.MessageBox.Show("The mesh hash only face normals instead of vertex normals. Be sure to export only smooth shaded models.", "Model Import Error", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Warning);
}
List <Vector3D> unsortedNormals = FloatToVectorArray(normalsArray);
mesh.Normals = new List <Vector3D>(mesh.Header.NumVertices);
for (int i = 0; i < mesh.Header.NumVertices; i++)
{
mesh.Normals.Add(unsortedNormals[vertNormalBindings[i]]);
}
mesh.VertexMaterials = new List <short>(mesh.Header.NumVertices);
for (int i = 0; i < mesh.Header.NumVertices; i++)
{
mesh.VertexMaterials.Add((short)mat.Id);
}
}
model.Header.NumMeshes = model.Meshes.Count();
}
public void WriteLibrary_Geometries()
{
// Geometry library. this is going to be fun...
Grendgine_Collada_Library_Geometries libraryGeometries = new Grendgine_Collada_Library_Geometries();
libraryGeometries.ID = cgfData.RootNode.Name;
// Make a list for all the geometries objects we will need. Will convert to array at end. Define the array here as well
List <Grendgine_Collada_Geometry> geometryList = new List <Grendgine_Collada_Geometry>();
// For each of the nodes, we need to write the geometry.
// Need to figure out how to assign the right material to the node as well.
// Use a foreach statement to get all the node chunks. This will get us the meshes, which will contain the vertex, UV and normal info.
foreach (CgfData.ChunkNode nodeChunk in cgfData.CgfChunks.Where(a => a.chunkType == ChunkType.Node))
{
// Create a geometry object. Use the chunk ID for the geometry ID
// Will have to be careful with this, since with .cga/.cgam pairs will need to match by Name.
Grendgine_Collada_Geometry tmpGeo = new Grendgine_Collada_Geometry();
tmpGeo.Name = nodeChunk.Name;
tmpGeo.ID = nodeChunk.id.ToString();
// Now make the mesh object. This will have 3 sources, 1 vertices, and 1 triangles (with material ID)
// If the Object ID of Node chunk points to a Helper or a Controller though, place an empty.
// Will have to figure out transforms here too.
Grendgine_Collada_Mesh tmpMesh = new Grendgine_Collada_Mesh();
// need to make a list of the sources and triangles to add to tmpGeo.Mesh
List <Grendgine_Collada_Source> sourceList = new List <Grendgine_Collada_Source>();
List <Grendgine_Collada_Triangles> triList = new List <Grendgine_Collada_Triangles>();
CgfData.ChunkDataStream tmpNormals = new CgfData.ChunkDataStream();
CgfData.ChunkDataStream tmpUVs = new CgfData.ChunkDataStream();
CgfData.ChunkDataStream tmpVertices = new CgfData.ChunkDataStream();
CgfData.ChunkDataStream tmpVertsUVs = new CgfData.ChunkDataStream();
if (cgfData.ChunkDictionary[nodeChunk.Object].chunkType == ChunkType.Mesh)
{
// Get the mesh chunk and submesh chunk for this node.
CgfData.ChunkMesh tmpMeshChunk = (CgfData.ChunkMesh)cgfData.ChunkDictionary[nodeChunk.Object];
CgfData.ChunkMeshSubsets tmpMeshSubsets = tmpMeshSubsets = (CgfData.ChunkMeshSubsets)cgfData.ChunkDictionary[tmpMeshChunk.MeshSubsets]; // Listed as Object ID for the Node
// Get pointers to the vertices data
if (tmpMeshChunk.VerticesData != 0)
{
tmpVertices = (CgfData.ChunkDataStream)cgfData.ChunkDictionary[tmpMeshChunk.VerticesData];
}
if (tmpMeshChunk.NormalsData != 0)
{
tmpNormals = (CgfData.ChunkDataStream)cgfData.ChunkDictionary[tmpMeshChunk.NormalsData];
}
if (tmpMeshChunk.UVsData != 0)
{
tmpUVs = (CgfData.ChunkDataStream)cgfData.ChunkDictionary[tmpMeshChunk.UVsData];
}
if (tmpMeshChunk.VertsUVsData != 0)
{
tmpVertsUVs = (CgfData.ChunkDataStream)cgfData.ChunkDictionary[tmpMeshChunk.VertsUVsData];
}
// need a collada_source for position, normal, UV and color, what the source is (verts), and the tri index
Grendgine_Collada_Source posSource = new Grendgine_Collada_Source();
Grendgine_Collada_Source normSource = new Grendgine_Collada_Source();
Grendgine_Collada_Source uvSource = new Grendgine_Collada_Source();
Grendgine_Collada_Vertices verts = new Grendgine_Collada_Vertices();
Grendgine_Collada_Triangles tris = new Grendgine_Collada_Triangles();
posSource.ID = nodeChunk.Name + "_pos"; // I want to use the chunk ID, but that may be daunting.
posSource.Name = nodeChunk.Name + "_pos";
normSource.ID = nodeChunk.Name + "_norm";
normSource.Name = nodeChunk.Name + "_norm";
uvSource.Name = nodeChunk.Name + "_UV";
uvSource.ID = nodeChunk.Name + "_UV";
// Create a float_array object to store all the data
Grendgine_Collada_Float_Array floatArray = new Grendgine_Collada_Float_Array();
floatArray.ID = posSource.Name + "_array";
floatArray.Count = (int)tmpVertices.NumElements;
// Build the string of vertices with a stringbuilder
StringBuilder vertString = new StringBuilder();
for (int i = 0; i < floatArray.Count; i++)
{
// this is an array of Vector3s?
}
//floatArray =
normSource.ID = nodeChunk.Name + "_pos";
normSource.Name = nodeChunk.Name + "_pos";
uvSource.ID = nodeChunk.Name + "_UV";
uvSource.Name = nodeChunk.Name + "_UV";
// make a vertices eliment. Only one, so no list needed.
// tris are easy. Just the index of faces
}
else if (cgfData.ChunkDictionary[nodeChunk.Object].chunkType == ChunkType.Helper)
{
}
else if (cgfData.ChunkDictionary[nodeChunk.Object].chunkType == ChunkType.Controller)
{
}
tmpGeo.Mesh = tmpMesh;
// Add the tmpGeo geometry to the list
geometryList.Add(tmpGeo);
}
libraryGeometries.Geometry = geometryList.ToArray();
daeObject.Library_Geometries = libraryGeometries;
}