private void saveComposition(string fname)
{
int n = 0;
foreach (STL stl in listSTLObjects.Items)
{
n += stl.list.Count;
}
STLTriangle[] triList2 = new STLTriangle[n];
int p = 0;
foreach (STL stl in listSTLObjects.Items)
{
stl.UpdateMatrix();
foreach (STLTriangle t2 in stl.list)
{
STLTriangle t = new STLTriangle();
t.p1 = new Vector3();
t.p2 = new Vector3();
t.p3 = new Vector3();
t.normal = new Vector3();
stl.TransformPoint(ref t2.p1, out t.p1.X, out t.p1.Y, out t.p1.Z);
stl.TransformPoint(ref t2.p2, out t.p2.X, out t.p2.Y, out t.p2.Z);
stl.TransformPoint(ref t2.p3, out t.p3.X, out t.p3.Y, out t.p3.Z);
// Compute normal from p1-p3
float ax = t.p2.X - t.p1.X;
float ay = t.p2.Y - t.p1.Y;
float az = t.p2.Z - t.p1.Z;
float bx = t.p3.X - t.p1.X;
float by = t.p3.Y - t.p1.Y;
float bz = t.p3.Z - t.p1.Z;
t.normal.X = ay * bz - az * by;
t.normal.Y = az * bx - ax * bz;
t.normal.Z = ax * by - ay * bx;
Vector3.Normalize(ref t.normal, out t.normal);
if (AssertVector3NotNaN(t.normal) && AssertVector3NotNaN(t.p1) && AssertVector3NotNaN(t.p2) &&
AssertVector3NotNaN(t.p3) &&
AssertMinDistance(t.p1, t.p2) && AssertMinDistance(t.p1, t.p3) && AssertMinDistance(t.p2, t.p3))
{
triList2[p++] = t;
}
}
}
n = p;
STLTriangle[] triList = new STLTriangle[n];
for (int i = 0; i < n; i++)
{
triList[i] = triList2[i];
}
// STL should have increasing z for faster slicing
Array.Sort <STLTriangle>(triList, triList[0]);
// Write file in binary STL format
FileStream fs = File.Open(fname, FileMode.Create);
if (writeSTLBinary)
{
BinaryWriter w = new BinaryWriter(fs);
int i;
for (i = 0; i < 20; i++)
{
w.Write((int)0);
}
w.Write(n);
for (i = 0; i < n; i++)
{
STLTriangle t = triList[i];
w.Write(t.normal.X);
w.Write(t.normal.Y);
w.Write(t.normal.Z);
w.Write(t.p1.X);
w.Write(t.p1.Y);
w.Write(t.p1.Z);
w.Write(t.p2.X);
w.Write(t.p2.Y);
w.Write(t.p2.Z);
w.Write(t.p3.X);
w.Write(t.p3.Y);
w.Write(t.p3.Z);
w.Write((short)0);
}
w.Close();
}
else
{
TextWriter w = new EnglishStreamWriter(fs);
w.WriteLine("solid RepetierHost");
for (int i = 0; i < n; i++)
{
STLTriangle t = triList[i];
w.Write(" facet normal ");
w.Write(t.normal.X);
w.Write(" ");
w.Write(t.normal.Y);
w.Write(" ");
w.WriteLine(t.normal.Z);
w.WriteLine(" outer loop");
w.Write(" vertex ");
w.Write(t.p1.X);
w.Write(" ");
w.Write(t.p1.Y);
w.Write(" ");
w.WriteLine(t.p1.Z);
w.Write(" vertex ");
w.Write(t.p2.X);
w.Write(" ");
w.Write(t.p2.Y);
w.Write(" ");
w.WriteLine(t.p2.Z);
w.Write(" vertex ");
w.Write(t.p3.X);
w.Write(" ");
w.Write(t.p3.Y);
w.Write(" ");
w.WriteLine(t.p3.Z);
w.WriteLine(" endloop");
w.WriteLine(" endfacet");
}
w.WriteLine("endsolid RepetierHost");
w.Close();
}
fs.Close();
}
public void exportObj(string filename, bool withNormals)
{
FileStream fs = File.Open(filename, FileMode.Create);
TextWriter w = new EnglishStreamWriter(fs);
w.WriteLine("# exported by Repetier-Host");
foreach (TopoVertex v in vertices)
{
w.Write("v ");
w.Write(v.pos.x);
w.Write(" ");
w.Write(v.pos.y);
w.Write(" ");
w.WriteLine(v.pos.z);
}
int idx = 1;
if (withNormals)
{
foreach (TopoTriangle t in triangles)
{
w.Write("vn ");
w.Write(t.normal.x);
w.Write(" ");
w.Write(t.normal.y);
w.Write(" ");
w.WriteLine(t.normal.z);
}
}
foreach (TopoTriangle t in triangles)
{
w.Write("f ");
w.Write(t.vertices[0].id);
if (withNormals)
{
w.Write("//");
w.Write(idx);
}
w.Write(" ");
w.Write(t.vertices[1].id);
if (withNormals)
{
w.Write("//");
w.Write(idx);
}
w.Write(" ");
w.Write(t.vertices[2].id);
if (withNormals)
{
w.Write("//");
w.Write(idx);
}
w.WriteLine();
}
w.Close();
fs.Close();
}
public void exportSTL(string filename, bool binary)
{
FileStream fs = File.Open(filename, FileMode.Create);
if (binary)
{
BinaryWriter w = new BinaryWriter(fs);
int i;
for (i = 0; i < 20; i++) w.Write((int)0);
w.Write(triangles.Count);
foreach (TopoTriangle t in triangles)
{
w.Write((float)t.normal.x);
w.Write((float)t.normal.y);
w.Write((float)t.normal.z);
for (i = 0; i < 3; i++)
{
w.Write((float)t.vertices[i].pos.x);
w.Write((float)t.vertices[i].pos.y);
w.Write((float)t.vertices[i].pos.z);
}
w.Write((short)0);
}
w.Close();
}
else
{
TextWriter w = new EnglishStreamWriter(fs);
w.WriteLine("solid RepetierHost");
foreach (TopoTriangle t in triangles)
{
w.Write(" facet normal ");
w.Write(t.normal.x);
w.Write(" ");
w.Write(t.normal.y);
w.Write(" ");
w.WriteLine(t.normal.z);
w.WriteLine(" outer loop");
w.Write(" vertex ");
w.Write(t.vertices[0].pos.x);
w.Write(" ");
w.Write(t.vertices[0].pos.y);
w.Write(" ");
w.WriteLine(t.vertices[0].pos.z);
w.Write(" vertex ");
w.Write(t.vertices[1].pos.x);
w.Write(" ");
w.Write(t.vertices[1].pos.y);
w.Write(" ");
w.WriteLine(t.vertices[1].pos.z);
w.Write(" vertex ");
w.Write(t.vertices[2].pos.x);
w.Write(" ");
w.Write(t.vertices[2].pos.y);
w.Write(" ");
w.WriteLine(t.vertices[2].pos.z);
w.WriteLine(" endloop");
w.WriteLine(" endfacet");
}
w.WriteLine("endsolid RepetierHost");
w.Close();
}
fs.Close();
}
private void saveComposition(string fname)
{
int n = 0;
foreach (STL stl in listSTLObjects.Items)
{
n += stl.list.Count;
}
STLTriangle[] triList2 = new STLTriangle[n];
int p = 0;
foreach (STL stl in listSTLObjects.Items)
{
stl.UpdateMatrix();
foreach (STLTriangle t2 in stl.list)
{
STLTriangle t = new STLTriangle();
t.p1 = new Vector3();
t.p2 = new Vector3();
t.p3 = new Vector3();
t.normal = new Vector3();
stl.TransformPoint(ref t2.p1, out t.p1.X, out t.p1.Y, out t.p1.Z);
stl.TransformPoint(ref t2.p2, out t.p2.X, out t.p2.Y, out t.p2.Z);
stl.TransformPoint(ref t2.p3, out t.p3.X, out t.p3.Y, out t.p3.Z);
// Compute normal from p1-p3
float ax = t.p2.X - t.p1.X;
float ay = t.p2.Y - t.p1.Y;
float az = t.p2.Z - t.p1.Z;
float bx = t.p3.X - t.p1.X;
float by = t.p3.Y - t.p1.Y;
float bz = t.p3.Z - t.p1.Z;
t.normal.X = ay * bz - az * by;
t.normal.Y = az * bx - ax * bz;
t.normal.Z = ax * by - ay * bx;
Vector3.Normalize(ref t.normal, out t.normal);
if (AssertVector3NotNaN(t.normal) && AssertVector3NotNaN(t.p1) && AssertVector3NotNaN(t.p2) &&
AssertVector3NotNaN(t.p3) &&
AssertMinDistance(t.p1, t.p2) && AssertMinDistance(t.p1, t.p3) && AssertMinDistance(t.p2, t.p3))
{
triList2[p++] = t;
}
}
}
n = p;
STLTriangle[] triList = new STLTriangle[n];
for (int i = 0; i < n; i++)
triList[i] = triList2[i];
// STL should have increasing z for faster slicing
Array.Sort<STLTriangle>(triList, triList[0]);
// Write file in binary STL format
FileStream fs = File.Open(fname, FileMode.Create);
if (writeSTLBinary)
{
BinaryWriter w = new BinaryWriter(fs);
int i;
for (i = 0; i < 20; i++) w.Write((int)0);
w.Write(n);
for (i = 0; i < n; i++)
{
STLTriangle t = triList[i];
w.Write(t.normal.X);
w.Write(t.normal.Y);
w.Write(t.normal.Z);
w.Write(t.p1.X);
w.Write(t.p1.Y);
w.Write(t.p1.Z);
w.Write(t.p2.X);
w.Write(t.p2.Y);
w.Write(t.p2.Z);
w.Write(t.p3.X);
w.Write(t.p3.Y);
w.Write(t.p3.Z);
w.Write((short)0);
}
w.Close();
}
else
{
TextWriter w = new EnglishStreamWriter(fs);
w.WriteLine("solid RepetierHost");
for (int i = 0; i < n; i++)
{
STLTriangle t = triList[i];
w.Write(" facet normal ");
w.Write(t.normal.X);
w.Write(" ");
w.Write(t.normal.Y);
w.Write(" ");
w.WriteLine(t.normal.Z);
w.WriteLine(" outer loop");
w.Write(" vertex ");
w.Write(t.p1.X);
w.Write(" ");
w.Write(t.p1.Y);
w.Write(" ");
w.WriteLine(t.p1.Z);
w.Write(" vertex ");
w.Write(t.p2.X);
w.Write(" ");
w.Write(t.p2.Y);
w.Write(" ");
w.WriteLine(t.p2.Z);
w.Write(" vertex ");
w.Write(t.p3.X);
w.Write(" ");
w.Write(t.p3.Y);
w.Write(" ");
w.WriteLine(t.p3.Z);
w.WriteLine(" endloop");
w.WriteLine(" endfacet");
}
w.WriteLine("endsolid RepetierHost");
w.Close();
}
fs.Close();
}
