public Scene LoadScene(string fileName)
{
_scene = new SimpleScene();
_scene.Camera = new TargetedCamera();
_material = new Material();
_transforms = new Stack<Matrix>();
_transforms.Push(Matrix.Identity);
StreamReader reader = new StreamReader(fileName);
while (!reader.EndOfStream)
{
string line = reader.ReadLine().Trim();
if (string.IsNullOrEmpty(line) || line.StartsWith("#"))
{
continue;
}
ProcessLine(line.Split(' ').Where(t => !string.IsNullOrEmpty(t)).ToArray());
}
return _scene;
}
public void BuildMesh(int[] vertexCounts, int[] poligonIndexes, float[] vertices, float[] normals, float[] texcoord, Material material)
{
//Only tiangles supported for now
if (!vertexCounts.All(c => c == 3))
throw new Exception("Only tiangles supported for now");
int poligonCount = vertexCounts.Count();
Triangles = new List<Triangle>(poligonCount);
int poligonComponentsCount = texcoord != null ? 3 : 2;
for (int i = 0; i < poligonCount; i++)
{
Triangle triangle = new Triangle();
triangle.Material = material;
int polygonOffset = i*vertexCounts[i]*poligonComponentsCount;
int vertexBOffset = 1*poligonComponentsCount;
int vertexCOffset = 2*poligonComponentsCount;
triangle.A = vertices.ToVec3(poligonIndexes[polygonOffset]);
triangle.B = vertices.ToVec3(poligonIndexes[polygonOffset + vertexBOffset]);
triangle.C = vertices.ToVec3(poligonIndexes[polygonOffset + vertexCOffset]);
int normalOffset = polygonOffset + 1;
triangle.Na = normals.ToVec3(poligonIndexes[normalOffset]);
triangle.Nb = normals.ToVec3(poligonIndexes[normalOffset + vertexBOffset]);
triangle.Nc = normals.ToVec3(poligonIndexes[normalOffset + vertexCOffset]);
if (texcoord != null)
{
int texcoordOffset = polygonOffset + 2;
triangle.Ta = texcoord.ToVec2(poligonIndexes[texcoordOffset]);
triangle.Tb = texcoord.ToVec2(poligonIndexes[texcoordOffset + vertexBOffset]);
triangle.Tc = texcoord.ToVec2(poligonIndexes[texcoordOffset + vertexCOffset]);
}
Triangles.Add(triangle);
}
}
private Material ReadMaterial(string id)
{
XElement instanceElement = _document.XPathSelectElement(string.Format("//c:library_materials/c:material[@id='{0}']/c:instance_effect", id), _nsMgr);
string effectId = instanceElement.Attribute("url").Value.Substring(1);
XElement effectInstanceElement = _document.XPathSelectElement(string.Format("//c:library_effects/c:effect[@id='{0}']", effectId), _nsMgr);
XElement profileElement = effectInstanceElement.XPathSelectElement("c:profile_COMMON", _nsMgr);
XElement effectElement = profileElement.XPathSelectElement("c:technique[@sid='common']/c:phong", _nsMgr);
Material material = new Material();
material.EmissionColor = ReadColor(effectElement, "c:emission/c:color");
material.AmbientColor = ReadColor(effectElement, "c:ambient/c:color");
material.DiffuseColor = ReadColorSampler(profileElement, effectElement, "c:diffuse/node()");
material.SpecularColor = ReadColor(effectElement, "c:specular/c:color");
material.ReflectiveColor = ReadColor(effectElement, "c:reflective/c:color");
material.Shininess = ReadFloat(effectElement, "c:shininess/c:float");
material.Reflectivity = ReadFloat(effectElement, "c:reflectivity/c:float");
return material;
}
