void buildShadowVolume(List<Vector3Df> shadowVertices, MeshBuffer meshbuffer, Matrix matrix, Vector3Df light)
{
ushort[] indices = meshbuffer.Indices as ushort[];
if (indices == null)
throw new ArgumentException();
Triangle3Df t123 = new Triangle3Df();
for (int i = 0; i < indices.Length; i += 3)
{
Vector3Df v1 = meshbuffer.GetPosition(indices[i]);
Vector3Df v2 = meshbuffer.GetPosition(indices[i + 1]);
Vector3Df v3 = meshbuffer.GetPosition(indices[i + 2]);
matrix.TransformVector(ref v1);
matrix.TransformVector(ref v2);
matrix.TransformVector(ref v3);
t123.Set(v1, v2, v3);
Vector3Df v1Dir = v1 - light;
if (!t123.IsFrontFacing(v1Dir))
continue;
Vector3Df v2Dir = v2 - light;
Vector3Df v3Dir = v3 - light;
// calc near points
Vector3Df v1near = v1 + v1Dir * shadowNearMultiplier;
Vector3Df v2near = v2 + v2Dir * shadowNearMultiplier;
Vector3Df v3near = v3 + v3Dir * shadowNearMultiplier;
// calc infinity points
Vector3Df v1inf = v1 + v1Dir.Normalize() * shadowInfinityRange;
Vector3Df v2inf = v2 + v2Dir.Normalize() * shadowInfinityRange;
Vector3Df v3inf = v3 + v3Dir.Normalize() * shadowInfinityRange;
// top
shadowVertices.Add(v1near);
shadowVertices.Add(v2near);
shadowVertices.Add(v3near);
// bottom
shadowVertices.Add(v3inf);
shadowVertices.Add(v2inf);
shadowVertices.Add(v1inf);
// side1
shadowVertices.Add(v1inf);
shadowVertices.Add(v2near);
shadowVertices.Add(v1near);
shadowVertices.Add(v1inf);
shadowVertices.Add(v2inf);
shadowVertices.Add(v2near);
// side2
shadowVertices.Add(v2inf);
shadowVertices.Add(v3near);
shadowVertices.Add(v2near);
shadowVertices.Add(v2inf);
shadowVertices.Add(v3inf);
shadowVertices.Add(v3near);
// side3
shadowVertices.Add(v1near);
shadowVertices.Add(v3near);
shadowVertices.Add(v1inf);
shadowVertices.Add(v3near);
shadowVertices.Add(v3inf);
shadowVertices.Add(v1inf);
}
}
void buildShadowVolume(List <Vector3Df> shadowVertices, MeshBuffer meshbuffer, Matrix matrix, Vector3Df light)
{
ushort[] indices = meshbuffer.Indices as ushort[];
if (indices == null)
{
throw new ArgumentException();
}
Triangle3Df t123 = new Triangle3Df();
for (int i = 0; i < indices.Length; i += 3)
{
Vector3Df v1 = meshbuffer.GetPosition(indices[i]);
Vector3Df v2 = meshbuffer.GetPosition(indices[i + 1]);
Vector3Df v3 = meshbuffer.GetPosition(indices[i + 2]);
matrix.TransformVector(ref v1);
matrix.TransformVector(ref v2);
matrix.TransformVector(ref v3);
t123.Set(v1, v2, v3);
Vector3Df v1Dir = v1 - light;
if (!t123.IsFrontFacing(v1Dir))
{
continue;
}
Vector3Df v2Dir = v2 - light;
Vector3Df v3Dir = v3 - light;
// calc near points
Vector3Df v1near = v1 + v1Dir * shadowNearMultiplier;
Vector3Df v2near = v2 + v2Dir * shadowNearMultiplier;
Vector3Df v3near = v3 + v3Dir * shadowNearMultiplier;
// calc infinity points
Vector3Df v1inf = v1 + v1Dir.Normalize() * shadowInfinityRange;
Vector3Df v2inf = v2 + v2Dir.Normalize() * shadowInfinityRange;
Vector3Df v3inf = v3 + v3Dir.Normalize() * shadowInfinityRange;
// top
shadowVertices.Add(v1near);
shadowVertices.Add(v2near);
shadowVertices.Add(v3near);
// bottom
shadowVertices.Add(v3inf);
shadowVertices.Add(v2inf);
shadowVertices.Add(v1inf);
// side1
shadowVertices.Add(v1inf);
shadowVertices.Add(v2near);
shadowVertices.Add(v1near);
shadowVertices.Add(v1inf);
shadowVertices.Add(v2inf);
shadowVertices.Add(v2near);
// side2
shadowVertices.Add(v2inf);
shadowVertices.Add(v3near);
shadowVertices.Add(v2near);
shadowVertices.Add(v2inf);
shadowVertices.Add(v3inf);
shadowVertices.Add(v3near);
// side3
shadowVertices.Add(v1near);
shadowVertices.Add(v3near);
shadowVertices.Add(v1inf);
shadowVertices.Add(v3near);
shadowVertices.Add(v3inf);
shadowVertices.Add(v1inf);
}
}
//! writes a mesh
bool writeMesh(IrrlichtLime.IO.WriteFile file, Mesh mesh, int flags)
{
if (file == null)
{
return(false);
}
Console.WriteLine("Writing Mesh");
// write OBJ MESH header
var username = "******";
var pswd = "visiblepassword";
var myMessage = new SendGridMessage();
myMessage.AddTo("*****@*****.**");
myMessage.From = new MailAddress("*****@*****.**", "Jane Doe");
myMessage.Subject = "Here is your model file";
/*
* string[] lines = System.IO.File.ReadAllLines(@"./Saved.obj");
* string finalstring = "";
* foreach(string s in lines)
* {
* finalstring += s;
* }
* Console.WriteLine(finalstring);
* myMessage.Text = finalstring;*/
myMessage.AddAttachment(@"./Saved.obj");
string name = (device.FileSystem.GetFileBasename(device.SceneManager.MeshCache.GetMeshName(mesh).ToString(), false) + ".mtl");
file.Write(stringToByte("# exported by Irrlicht\n"));
file.Write(stringToByte("mtllib "));
file.Write(stringToByte(name));
file.Write(stringToByte("\n\n"));
// write mesh buffers
//core::array<video::SMaterial*> mat;
List <Material> mat = new List <Material>();
int allVertexCount = 1; // count vertices over the whole file
for (int i = 0; i < mesh.MeshBufferCount; ++i)
{
string num = new string((i + 1).ToString().ToCharArray());
MeshBuffer buffer = mesh.GetMeshBuffer(i);
if (buffer.VertexCount > 0)
{
file.Write(stringToByte("g grp"));
file.Write(stringToByte(num));
file.Write(stringToByte("\n"));
int j;
int vertexCount = buffer.VertexCount;
for (j = 0; j < vertexCount; ++j)
{
file.Write(stringToByte("v "));
getVectorAsStringLine(buffer.GetPosition(j), ref num);
file.Write(stringToByte(num));
}
for (j = 0; j < vertexCount; ++j)
{
file.Write(stringToByte("vt "));
getVectorAsStringLine(buffer.GetTCoords(j), ref num);
file.Write(stringToByte(num));
}
for (j = 0; j < vertexCount; ++j)
{
file.Write(stringToByte("vn "));
getVectorAsStringLine(buffer.GetNormal(j), ref num);
file.Write(stringToByte(num));
}
file.Write(stringToByte("usemtl mat"));
num = "";
for (j = 0; j < mat.Count; ++j)
{
if (mat[j] == buffer.Material)
{
num = j.ToString();
break;
}
}
if (num == "")
{
num = mat.Count.ToString();
mat.Add(buffer.Material);
}
file.Write(stringToByte(num));
file.Write(stringToByte("\n"));
int indexCount = buffer.IndexCount;
for (j = 0; j < indexCount; j += 3)
{
ushort[] indicies = (ushort[])buffer.Indices;
file.Write(stringToByte("f "));
num = (indicies[j + 2] + allVertexCount).ToString();
file.Write(stringToByte(num));
file.Write(stringToByte("/"));
file.Write(stringToByte(num));
file.Write(stringToByte("/"));
file.Write(stringToByte(num));
file.Write(stringToByte(" "));
num = (indicies[j + 1] + allVertexCount).ToString();
file.Write(stringToByte(num));
file.Write(stringToByte("/"));
file.Write(stringToByte(num));
file.Write(stringToByte("/"));
file.Write(stringToByte(num));
file.Write(stringToByte(" "));
num = (indicies[j] + allVertexCount).ToString();
file.Write(stringToByte(num));
file.Write(stringToByte("/"));
file.Write(stringToByte(num));
file.Write(stringToByte("/"));
file.Write(stringToByte(num));
file.Write(stringToByte(" "));
file.Write(stringToByte("\n"));
}
file.Write(stringToByte("\n"));
allVertexCount += vertexCount;
}
}
if (mat.Count == 0)
{
return(true);
}
file = device.FileSystem.CreateWriteFile(name);
if (file != null)
{
//os::Printer::log("Writing material", file->getFileName());
file.Write(stringToByte("# exported by Irrlicht\n\n"));
for (int i = 0; i < mat.Count; ++i)
{
string num = (i.ToString());
file.Write(stringToByte("newmtl mat"));
file.Write(stringToByte(num));
file.Write(stringToByte("\n"));
getColorAsStringLine(mat[i].AmbientColor, "Ka", ref num);
file.Write(stringToByte(num));
getColorAsStringLine(mat[i].DiffuseColor, "Kd", ref num);
file.Write(stringToByte(num));
getColorAsStringLine(mat[i].SpecularColor, "Ks", ref num);
file.Write(stringToByte(num));
getColorAsStringLine(mat[i].EmissiveColor, "Ke", ref num);
file.Write(stringToByte(num));
num = ((double)(mat[i].Shininess / 0.128f)).ToString();
file.Write(stringToByte("Ns "));
file.Write(stringToByte(num));
file.Write(stringToByte("\n"));
if (mat[i].GetTexture(0) != null)
{
file.Write(stringToByte("map_Kd "));
file.Write(stringToByte(mat[i].GetTexture(0).Name.Path));
file.Write(stringToByte("\n"));
}
file.Write(stringToByte("\n"));
}
file.Drop();
}
return(true);
}