private static MashTrigle GetMashTrigle(string fname)
{
MashTrigle result = new MashTrigle();
using (FileStream fs = new FileStream(fname, FileMode.Open)) {
using (BinaryReader reader = new BinaryReader(fs)) {
long flen = fs.Length;
if (flen % 108 != 0)
{
throw new Exception("不是正确的文件");
}
int facecount = (int)(flen / 108);
TrigleFace[] trigles = new TrigleFace[facecount];
for (int i = 0; i < facecount; i++)
{
Vector3f v0, v1, v2, vt0, vt1, vt2, vn0, vn1, vn2;
v0 = ReadAVector(reader);
vt0 = ReadAVector(reader);
vn0 = ReadAVector(reader);
v1 = ReadAVector(reader);
vt1 = ReadAVector(reader);
vn1 = ReadAVector(reader);
v2 = ReadAVector(reader);
vt2 = ReadAVector(reader);
vn2 = ReadAVector(reader);
TrigleFace face = new TrigleFace(v0, v1, v2)
{
sp0 = new Vector2f(vt0.X, vt0.Y),
sp1 = new Vector2f(vt1.X, vt1.Y),
sp2 = new Vector2f(vt2.X, vt2.Y),
n0 = vn0,
n1 = vn1,
n2 = vn2
};
trigles[i] = face;
}
result.SetTrigles(trigles);
}
}
return(result);
}
private static void SaveObject(MashTrigle mashTrigle, string fpath)
{
using (FileStream fs = new FileStream(fpath, FileMode.Create)) {
using (BinaryWriter writer = new BinaryWriter(fs)) {
foreach (TrigleFace trigle in mashTrigle.trigles)
{
WriteVector(writer, trigle.v0);
WriteVector(writer, trigle.sp0);
WriteVector(writer, trigle.n0);
WriteVector(writer, trigle.v1);
WriteVector(writer, trigle.sp1);
WriteVector(writer, trigle.n1);
WriteVector(writer, trigle.v2);
WriteVector(writer, trigle.sp2);
WriteVector(writer, trigle.n2);
}
}
}
}
public static void Save(Scene scene, string basePath, string proName)
{
basePath = Path.Combine(basePath, proName);
string profile = Path.Combine(basePath, proName + ".mrirpro");
Directory.CreateDirectory(basePath);
using (FileStream fs = new FileStream(profile, FileMode.Create)) {
using (StreamWriter sw = new StreamWriter(fs)) {
sw.AutoFlush = true;
int objcount = -1;
foreach (RenderObject obj in scene.Objects)
{
objcount++;
string fpath = Path.Combine(basePath, objcount + ".mrimtl");
SaveMaterial(obj.Material, fpath);
Type type = obj.GetType();
if (type == typeof(MashTrigle))
{
MashTrigle mash = obj as MashTrigle;
string mtlpath = Path.Combine(basePath, objcount + ".mritri");
SaveObject(mash, mtlpath);
sw.WriteLine($"mt {objcount} {objcount}");
continue;
}
if (type == typeof(PointLight))
{
PointLight pl = obj as PointLight;
sw.WriteLine($"l.p {pl.Position.X},{pl.Position.Y},{pl.Position.Z},{pl.R} {objcount}");
continue;
}
}
}
}
}
public static MashTrigle[] LoadModel(string filePath, bool negativeZ = false)
{
string[] lines = File.ReadAllLines(filePath);
List <MashTrigle> mashes = new List <MashTrigle>();
List <Vector3f> v = new List <Vector3f>()
{
new Vector3f()
};
Dictionary <int, List <PW_Trigle> > faceList = new Dictionary <int, List <PW_Trigle> >();
List <Vector2f> vt = new List <Vector2f>()
{
new Vector2f()
};
List <Vector3f> vn = new List <Vector3f>()
{
new Vector3f()
};
MashTrigle nobj = null;
List <PW_Trigle> trigles = new List <PW_Trigle>();
for (int linecount = 0; linecount < lines.Length; linecount++)
{
string line = lines[linecount];
if (string.IsNullOrWhiteSpace(line) || line.StartsWith('#'))
{
continue;
}
float p0 = 0.0f, p1 = 0.0f, p2 = 0.0f;
string[] parts = line.Split(LineSplitChars, StringSplitOptions.RemoveEmptyEntries);
switch (parts[0].ToLower())
{
case "v":
#region v
if (parts.Length != 4)
{
throw new Exception($"line {linecount} : 缺少参数的行，请求3个，实际为{parts.Length - 1}个");
}
if (!Float.TryParse(parts[1], out p0))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[1]}");
}
if (!Float.TryParse(parts[2], out p1))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[2]}");
}
if (!Float.TryParse(parts[3], out p2))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[3]}");
}
if (negativeZ)
{
v.Add(new Vector3f(p0, p1, -p2));
}
else
{
v.Add(new Vector3f(p0, p1, p2));
}
#endregion
break;
case "vt":
#region vt
if (parts.Length != 3 && parts.Length != 4)
{
throw new Exception($"line {linecount} : 缺少参数的行，请求2或3个，实际为{parts.Length - 1}个");
}
if (!Float.TryParse(parts[1], out p0))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[1]}");
}
if (!Float.TryParse(parts[2], out p1))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[2]}");
}
vt.Add(new Vector2f(p0, p1));
#endregion
break;
case "vn":
#region vn
if (parts.Length != 4)
{
throw new Exception($"line {linecount} : 缺少参数的行，请求3个，实际为{parts.Length - 1}个");
}
if (!Float.TryParse(parts[1], out p0))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[1]}");
}
if (!Float.TryParse(parts[2], out p1))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[2]}");
}
if (!Float.TryParse(parts[3], out p2))
{
throw new Exception($"line {linecount} : 不能转换的数据 {parts[3]}");
}
if (negativeZ)
{
vn.Add(Vector3f.Normalize(new Vector3f(p0, p1, -p2)));
}
else
{
vn.Add(Vector3f.Normalize(new Vector3f(p0, p1, p2)));
}
#endregion
break;
case "vp":
break;
case "g":
#region g
if (trigles != null && trigles.Count > 0)
{
if (nobj == null)
{
nobj = new MashTrigle();
}
nobj.SetTrigles(Smooth(trigles, v, vt, faceList));
mashes.Add(nobj);
}
nobj = new MashTrigle();
trigles = new List <PW_Trigle>();
#endregion
break;
case "f":
#region f
if (parts.Length < 4)
{
throw new Exception($"line {linecount} : 缺少参数的行，请求至少为3个，实际为{parts.Length - 1}个");
}
int pointcount = parts.Length - 1;
int[] vidx = new int[pointcount], vtidx = new int[pointcount], vnidx = new int[pointcount];
// 分割顶点信息
for (int i = 0; i < pointcount; i++)
{
string pinfo = parts[i + 1];
string[] infos = pinfo.Split(PInfoSplitChars);
vidx[i] = int.Parse(infos[0]);
int tmp;
if (infos.Length > 1 && int.TryParse(infos[1], out tmp))
{
vtidx[i] = tmp;
}
else
{
vtidx[i] = 0; //-1;
}
if (infos.Length > 2 && int.TryParse(infos[1], out tmp))
{
vnidx[i] = tmp;
}
else
{
vnidx[i] = 0; //-1;
}
}
// 生成三角形面
for (int i = 2; i < pointcount; i++)
{
PW_Trigle face = new PW_Trigle();
face.v0 = vidx[0];
face.v1 = vidx[i - 1];
face.v2 = vidx[i];
{ //normal
Vector3f e1 = v[face.v1] - v[face.v0], e2 = v[face.v2] - v[face.v0];
face.Normal = Vector3f.Normalize(Vector3f.Cross(e1, e2));
}
{ //sp
//if (vtidx[0] != -1) {
face.vt0 = vtidx[0];
//}
//if (vtidx[i - 1] != -1) {
face.vt1 = vtidx[i - 1];
//}
//if (vtidx[i] != -1) {
face.vt2 = vtidx[i];
//}
}
trigles.Add(face);
if (!faceList.ContainsKey(face.v0))
{
faceList[face.v0] = new List <PW_Trigle>();
}
faceList[face.v0].Add(face);
if (!faceList.ContainsKey(face.v1))
{
faceList[face.v1] = new List <PW_Trigle>();
}
faceList[face.v1].Add(face);
if (!faceList.ContainsKey(face.v2))
{
faceList[face.v2] = new List <PW_Trigle>();
}
faceList[face.v2].Add(face);
}
#endregion
break;
}
}
if (trigles != null && trigles.Count > 0)
{
if (nobj == null)
{
nobj = new MashTrigle();
}
nobj.SetTrigles(Smooth(trigles, v, vt, faceList));
mashes.Add(nobj);
}
return(mashes.ToArray());
}
