/// <summary>
/// Adds source data.
/// </summary>
/// <param name="mesh">Parent mesh element.</param>
/// <param name="srcID">ID of new source.</param>
/// <param name="paramNames">Parameters.</param>
/// <param name="values">Values.</param>
private void AddSource(ref _daeElement mesh, string srcID, string paramNames, ref List <float> values)
{
_daeElement src = mesh.add("source");
src.setAttribute("id", srcID);
_daeElement fa = src.add("float_array");
fa.setAttribute("id", src.getAttribute("id") + "-array");
fa.setAttribute("count", values.Count.ToString());
fa.setCharData(FloatArrayToString(ref values));
_daeElement acc = src.add("technique_common accessor");
acc.setAttribute("source", MakeUriRef(fa.getAttribute("id")));
string[] _params = paramNames.Split(' ');
acc.setAttribute("stride", _params.Length.ToString());
acc.setAttribute("count", (values.Count / _params.Length).ToString());
foreach (string param in _params)
{
_daeElement p = acc.add("param");
p.setAttribute("name", param);
p.setAttribute("type", "float");
}
}
/// <summary>
/// Adds asset element.
/// </summary>
/// <param name="root">Root dae element.</param>
private _daeElement AddAsset(ref _daeElement root)
{
// Get ISO 8601 UTC date time
string xsDateTime = DateTime.Now.ToUniversalTime().ToString("o");
// Create <asset>
_daeElement asset = root.add("asset");
asset.add("created").setCharData(xsDateTime);
asset.add("modified").setCharData(xsDateTime);
// Add up vector to <asset>
switch (this.upVector)
{
case UpVectors.X_UP:
asset.add("up_axis").setCharData("X_UP");
break;
case UpVectors.Y_UP:
asset.add("up_axis").setCharData("Y_UP");
break;
case UpVectors.Z_UP:
asset.add("up_axis").setCharData("Z_UP");
break;
}
return(asset);
}
private void AddVisualScene(ref _daeElement root, ref DFMesh dfMesh)
{
string geomId = "model" + dfMesh.ObjectId.ToString();
string sceneName = geomId + "-scene";
_daeElement visualSceneLib = root.add("library_visual_scenes");
_daeElement visualScene = visualSceneLib.add("visual_scene");
visualScene.setAttribute("id", sceneName);
// Add <node>
_daeElement node = visualScene.add("node");
node.setAttribute("id", geomId + "-node");
// Transform <node> based on up vector
switch (this.upVector)
{
case UpVectors.X_UP:
node.add("rotate").setCharData("0 0 1 -90");
break;
case UpVectors.Y_UP:
// No change required. This is how the geometry is in DFMesh.
break;
case UpVectors.Z_UP:
node.add("rotate").setCharData("1 0 0 90");
break;
}
// Instantiate the <geometry>
_daeElement instanceGeom = node.add("instance_geometry");
instanceGeom.setAttribute("url", MakeUriRef(geomId));
// Bind material parameters
_daeElement techniqueCommon = instanceGeom.add("bind_material technique_common");
foreach (var subMesh in dfMesh.SubMeshes)
{
string materialName = MakeMaterialName(subMesh.TextureArchive, subMesh.TextureRecord);
_daeElement instanceMaterial = techniqueCommon.add("instance_material");
instanceMaterial.setAttribute("symbol", materialName + "-material");
instanceMaterial.setAttribute("target", MakeUriRef(materialName + "-material"));
_daeElement bindVertexInput = instanceMaterial.add("bind_vertex_input");
bindVertexInput.setAttribute("semantic", "uv0");
bindVertexInput.setAttribute("input_semantic", "TEXCOORD");
bindVertexInput.setAttribute("input_set", "0");
}
// Add a <scene>
root.add("scene instance_visual_scene").setAttribute("url", MakeUriRef(sceneName));
}
/// <summary>
/// Adds input.
/// </summary>
/// <param name="triangles">Triangles element.</param>
/// <param name="semantic">Semantic.</param>
/// <param name="srcID">Source ID.</param>
/// <param name="offset">Offset.</param>
/// <returns>True if successful.</returns>
private bool AddInput(ref _daeElement triangles, string semantic, string srcID, int offset)
{
_daeElement input = triangles.add("input");
input.setAttribute("semantic", semantic);
input.setAttribute("offset", offset.ToString());
input.setAttribute("source", MakeUriRef(srcID));
if (semantic == "TEXCOORD")
{
input.setAttribute("set", "0");
}
return(true);
}
/// <summary>
/// Adds materials.
/// </summary>
/// <param name="root">Root element.</param>
/// <param name="dfMesh">DFMesh.</param>
/// <returns>True if successful.</returns>
private bool AddMaterials(ref _daeElement root, ref DFMesh dfMesh)
{
// Add <library_materials>
_daeElement materialLib = root.add("library_materials");
// Add one material per submesh
foreach (var subMesh in dfMesh.SubMeshes)
{
// Add <material>
string materialName = MakeMaterialName(subMesh.TextureArchive, subMesh.TextureRecord);
_daeElement material = materialLib.add("material");
material.setAttribute("id", materialName + "-material");
material.add("instance_effect").setAttribute("url", MakeUriRef(materialName + "-effect"));
}
return(true);
}
/// <summary>
/// Exports texture images and add references to the dae file.
/// </summary>
/// <param name="root">Root element.</param>
/// <param name="dfMesh">DFMesh.</param>
/// <returns>True if successful.</returns>
private bool AddImages(ref _daeElement root, ref DFMesh dfMesh)
{
// Create <library_images>
_daeElement imageLib = root.add("library_images");
// Export all textures.
foreach (var subMesh in dfMesh.SubMeshes)
{
// Construct string
string materialName = MakeMaterialName(subMesh.TextureArchive, subMesh.TextureRecord);
string inputFilename = TextureFile.IndexToFileName(subMesh.TextureArchive);
string outputFilename = materialName + "." + imageFormat.ToString().ToLower();
// Export texture
string outputPath = Path.Combine(modelOutputPath, imageOutputRelativePath);
string outputFilePath = Path.Combine(outputPath, outputFilename);
if (!File.Exists(outputFilePath))
{
// Load texture file
textureFile.Load(
Path.Combine(arena2Path, inputFilename),
FileUsage.UseDisk,
true);
// Export image
Bitmap bm = textureFile.GetManagedBitmap(
subMesh.TextureRecord,
0,
false,
true);
bm.Save(outputFilePath, imageFormat);
}
// Add <image>
string relativeOutputPath = Path.Combine(imageOutputRelativePath, outputFilename);
relativeOutputPath = relativeOutputPath.Replace("\\", "/");
_daeElement image = imageLib.add("image");
image.setAttribute("id", materialName + "-image");
image.add("init_from").setCharData(relativeOutputPath);
}
return(true);
}
/// <summary>
/// Adds visual effects for materials.
/// </summary>
/// <param name="root">Root element.</param>
/// <param name="dfMesh">DFMesh.</param>
/// <returns>True if successful.</returns>
private bool AddEffects(ref _daeElement root, ref DFMesh dfMesh)
{
// Add <library_effects>
_daeElement effectLib = root.add("library_effects");
// Add one effect per submesh
foreach (var subMesh in dfMesh.SubMeshes)
{
// Compose strings
string materialName = MakeMaterialName(subMesh.TextureArchive, subMesh.TextureRecord);
string effectName = materialName + "-effect";
// Add <effect> and profile_COMMON
_daeElement effect = effectLib.add("effect");
effect.setAttribute("id", effectName);
_daeElement profile = effect.add("profile_COMMON");
// Add <surface>
_daeElement newparam = profile.add("newparam");
newparam.setAttribute("sid", "surface");
_daeElement surface = newparam.add("surface");
surface.setAttribute("type", "2D");
surface.add("init_from").setCharData(materialName + "-image");
// Add <sampler2D>
newparam = profile.add("newparam");
newparam.setAttribute("sid", "sampler");
_daeElement sampler = newparam.add("sampler2D");
sampler.add("source").setCharData("surface");
sampler.add("minfilter").setCharData("LINEAR_MIPMAP_LINEAR");
sampler.add("magfilter").setCharData("LINEAR");
// Add <technique>
_daeElement technique = profile.add("technique");
technique.setAttribute("sid", "common");
_daeElement texture = technique.add("phong diffuse texture");
texture.setAttribute("texture", "sampler");
texture.setAttribute("texcoord", "uv0");
}
return(true);
}
/// <summary>
/// Adds geometry elements.
/// </summary>
/// <param name="root">Root element.</param>
/// <param name="dfMesh">DFMesh.</param>
private void AddGeometry(ref _daeElement root, ref DFMesh dfMesh)
{
_daeElement geomLib = root.add("library_geometries");
_daeElement geom = geomLib.add("geometry");
string geomId = "model" + dfMesh.ObjectId.ToString();
geom.setAttribute("id", geomId);
_daeElement mesh = geom.add("mesh");
// Get source vertex data
List <float> posArray = new List <float>(dfMesh.TotalVertices * 3);
List <float> normalArray = new List <float>(dfMesh.TotalVertices * 3);
List <float> uvArray = new List <float>(dfMesh.TotalVertices * 2);
foreach (var subMesh in dfMesh.SubMeshes)
{
// Get texture dimensions for this submesh
string archivePath = Path.Combine(arena2Path, TextureFile.IndexToFileName(subMesh.TextureArchive));
System.Drawing.Size sz = TextureFile.QuickSize(archivePath, subMesh.TextureRecord);
// Collect vertex information for every plane in this submesh
foreach (var plane in subMesh.Planes)
{
foreach (var point in plane.Points)
{
// Add position data
posArray.Add(point.X);
posArray.Add(-point.Y);
posArray.Add(-point.Z);
// Add normal data
normalArray.Add(point.NX);
normalArray.Add(-point.NY);
normalArray.Add(-point.NZ);
// Add UV data
uvArray.Add(point.U / (float)sz.Width);
uvArray.Add(-(point.V / (float)sz.Height));
}
}
}
// Add positions, normals, and texture coordinates
AddSource(ref mesh, geomId + "-positions", "X Y Z", ref posArray);
AddSource(ref mesh, geomId + "-normals", "X Y Z", ref normalArray);
AddSource(ref mesh, geomId + "-uv", "S T", ref uvArray);
// Add <vertices> element
_daeElement vertices = mesh.add("vertices");
vertices.setAttribute("id", geomId + "-vertices");
_daeElement verticesInput = vertices.add("input");
verticesInput.setAttribute("semantic", "POSITION");
verticesInput.setAttribute("source", MakeUriRef(geomId + "-positions"));
// Add triangle indices for each submesh
uint vertexCount = 0;
foreach (var subMesh in dfMesh.SubMeshes)
{
// Loop through all planes in this submesh
List <uint> indexArray = new List <uint>(subMesh.TotalTriangles * (3 * 3));
foreach (var plane in subMesh.Planes)
{
// Every DFPlane is a triangle fan radiating from point 0
uint sharedPoint = vertexCount++;
// Index remaining points. There are (plane.Points.Length - 2) triangles in every plane
for (int tri = 0; tri < plane.Points.Length - 2; tri++)
{
// Position, Normal, UV index for shared point
indexArray.Add(sharedPoint);
indexArray.Add(sharedPoint);
indexArray.Add(sharedPoint);
// Position, Normal, UV index for vertexCount
indexArray.Add(vertexCount);
indexArray.Add(vertexCount);
indexArray.Add(vertexCount);
// Position, Normal, UV index for vertexCount + 1
indexArray.Add(vertexCount + 1);
indexArray.Add(vertexCount + 1);
indexArray.Add(vertexCount + 1);
// Increment vertexCount to next point in fan
vertexCount++;
}
// Increment vertexCount to start of next fan in vertex buffer
vertexCount++;
}
// Add <triangle>
string materialName = MakeMaterialName(subMesh.TextureArchive, subMesh.TextureRecord);
_daeElement triangles = mesh.add("triangles");
triangles.setAttribute("count", (indexArray.Count / (3 * 3)).ToString());
triangles.setAttribute("material", materialName + "-material");
AddInput(ref triangles, "VERTEX", geomId + "-vertices", 0);
AddInput(ref triangles, "NORMAL", geomId + "-normals", 1);
AddInput(ref triangles, "TEXCOORD", geomId + "-uv", 2);
// Add <p>
_daeElement p = triangles.add("p");
p.setCharData(UIntArrayToString(ref indexArray));
}
}
/// <summary>
/// Exports a DFMesh object to Collada format.
/// </summary>
/// <param name="id">ID of DFMesh to export.</param>
/// <param name="scale">Scale model by value.</param>
/// <returns>True if successful.</returns>
public bool DFMeshToCollada(uint id, float scale)
{
// Get source mesh
int index = arch3dFile.GetRecordIndex(id);
DFMesh dfMesh = arch3dFile.GetMesh(index);
if (dfMesh.SubMeshes == null)
{
string error = string.Format("Model '{0}' not found", id);
Console.WriteLine(error);
throw new Exception(error);
}
// Test model output path
if (!Directory.Exists(modelOutputPath))
{
string error = string.Format("Model output path '{0}' does not exist.", modelOutputPath);
Console.WriteLine(error);
throw new Exception(error);
}
// Test or create image output path
string fullImageOutputPath = Path.Combine(modelOutputPath, imageOutputRelativePath);
if (!Directory.Exists(fullImageOutputPath))
{
Directory.CreateDirectory(fullImageOutputPath);
}
// Scale model
if (scale != 1.0f)
{
foreach (var mesh in dfMesh.SubMeshes)
{
foreach (var plane in mesh.Planes)
{
for (int point = 0; point < plane.Points.Length; point++)
{
plane.Points[point].X *= scale;
plane.Points[point].Y *= scale;
plane.Points[point].Z *= scale;
}
}
}
}
// Create dae root
string filePath = Path.Combine(modelOutputPath, dfMesh.ObjectId.ToString() + ".dae");
_daeElement root = dae.add(filePath);
// Build dae file
AddAsset(ref root);
AddGeometry(ref root, ref dfMesh);
AddImages(ref root, ref dfMesh);
AddEffects(ref root, ref dfMesh);
AddMaterials(ref root, ref dfMesh);
AddVisualScene(ref root, ref dfMesh);
// Write dae file
dae.writeAll();
return(true);
}
