public static bool loadModelSTL_ascii(SimpleModel simpleModel, string filename, FMatrix3x3 matrix) { SimpleVolume vol = new SimpleVolume(); using (StreamReader f = new StreamReader(filename)) { // check for "SOLID" FPoint3 vertex = new FPoint3(); int n = 0; Point3 v0 = new Point3(0, 0, 0); Point3 v1 = new Point3(0, 0, 0); Point3 v2 = new Point3(0, 0, 0); string line = f.ReadLine(); Regex onlySingleSpaces = new Regex("\\s+", RegexOptions.Compiled); while (line != null) { line = onlySingleSpaces.Replace(line, " "); var parts = line.Trim().Split(' '); if (parts[0].Trim() == "vertex") { vertex.x = Convert.ToDouble(parts[1]); vertex.y = Convert.ToDouble(parts[2]); vertex.z = Convert.ToDouble(parts[3]); // change the scale from mm to micrometers vertex *= 1000.0; n++; switch (n) { case 1: v0 = matrix.apply(vertex); break; case 2: v1 = matrix.apply(vertex); break; case 3: v2 = matrix.apply(vertex); vol.addFaceTriangle(v0, v1, v2); n = 0; break; } } line = f.ReadLine(); } } if (vol.faceTriangles.Count > 3) { simpleModel.volumes.Add(vol); return true; } return false; }
public static bool loadModelFromFile(SimpleModel simpleModel, string filename, FMatrix3x3 matrix) { if (!loadModelSTL_ascii(simpleModel, filename, matrix)) { return loadModelSTL_binary(simpleModel, filename, matrix); } return true; }
public static SimpleModel loadModelSTL_ascii(string filename, FMatrix3x3 matrix) { SimpleModel m = new SimpleModel(); m.volumes.Add(new SimpleVolume()); SimpleVolume vol = m.volumes[0]; using (StreamReader f = new StreamReader(filename)) { // check for "SOLID" FPoint3 vertex = new FPoint3(); int n = 0; Point3 v0 = new Point3(0, 0, 0); Point3 v1 = new Point3(0, 0, 0); Point3 v2 = new Point3(0, 0, 0); string line = f.ReadLine(); Regex onlySingleSpaces = new Regex("\\s+", RegexOptions.Compiled); while (line != null) { line = onlySingleSpaces.Replace(line, " "); var parts = line.Trim().Split(' '); if (parts[0].Trim() == "vertex") { vertex.x = Convert.ToDouble(parts[1]); vertex.y = Convert.ToDouble(parts[2]); vertex.z = Convert.ToDouble(parts[3]); // change the scale from mm to micrometers vertex *= 1000.0; n++; switch (n) { case 1: v0 = matrix.apply(vertex); break; case 2: v1 = matrix.apply(vertex); break; case 3: v2 = matrix.apply(vertex); vol.addFaceTriangle(v0, v1, v2); n = 0; break; } } line = f.ReadLine(); } return(m); } }
public static SimpleModel loadModelFromFile(string filename, FMatrix3x3 matrix) { SimpleModel fromAsciiModel = loadModelSTL_ascii(filename, matrix); if (fromAsciiModel.volumes[0].faceTriangles.Count == 0) { return(loadModelSTL_binary(filename, matrix)); } return(fromAsciiModel); }
static bool loadModelSTL_binary(SimpleModel simpleModel, string filename, FMatrix3x3 matrix) { SimpleVolume vol = new SimpleVolume(); using (FileStream stlStream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) { // load it as a binary stl // skip the first 80 bytes // read in the number of triangles stlStream.Position = 0; BinaryReader br = new BinaryReader(stlStream); byte[] fileContents = br.ReadBytes((int)stlStream.Length); int currentPosition = 80; uint numTriangles = System.BitConverter.ToUInt32(fileContents, currentPosition); long bytesForNormals = numTriangles * 3 * 4; long bytesForVertices = numTriangles * 3 * 4; long bytesForAttributs = numTriangles * 2; currentPosition += 4; long numBytesRequiredForVertexData = currentPosition + bytesForNormals + bytesForVertices + bytesForAttributs; if (fileContents.Length < numBytesRequiredForVertexData || numTriangles < 4) { stlStream.Close(); return(false); } Point3[] vector = new Point3[3]; for (int i = 0; i < numTriangles; i++) { // skip the normal currentPosition += 3 * 4; for (int j = 0; j < 3; j++) { vector[j] = new Point3( System.BitConverter.ToSingle(fileContents, currentPosition + 0 * 4) * 1000, System.BitConverter.ToSingle(fileContents, currentPosition + 1 * 4) * 1000, System.BitConverter.ToSingle(fileContents, currentPosition + 2 * 4) * 1000); currentPosition += 3 * 4; } currentPosition += 2; // skip the attribute vol.addFaceTriangle(vector[2], vector[1], vector[0]); } } if (vol.faceTriangles.Count > 3) { simpleModel.volumes.Add(vol); return(true); } return(false); }
public static bool loadModelFromFile(SimpleModel simpleModel, string filename, FMatrix3x3 matrix) { if (!loadModelSTL_ascii(simpleModel, filename, matrix)) { return(loadModelSTL_binary(simpleModel, filename, matrix)); } return(true); }
private static bool loadModelSTL_binary(SimpleModel simpleModel, string filename, FMatrix3x3 matrix) { SimpleVolume vol = new SimpleVolume(); using (FileStream stlStream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) { // load it as a binary stl // skip the first 80 bytes // read in the number of triangles stlStream.Position = 0; BinaryReader br = new BinaryReader(stlStream); byte[] fileContents = br.ReadBytes((int)stlStream.Length); int currentPosition = 80; uint numTriangles = System.BitConverter.ToUInt32(fileContents, currentPosition); long bytesForNormals = numTriangles * 3 * 4; long bytesForVertices = numTriangles * 3 * 4; long bytesForAttributs = numTriangles * 2; currentPosition += 4; long numBytesRequiredForVertexData = currentPosition + bytesForNormals + bytesForVertices + bytesForAttributs; if (fileContents.Length < numBytesRequiredForVertexData || numTriangles < 4) { stlStream.Close(); return false; } Point3[] vector = new Point3[3]; for (int i = 0; i < numTriangles; i++) { // skip the normal currentPosition += 3 * 4; for (int j = 0; j < 3; j++) { vector[j] = new Point3( System.BitConverter.ToSingle(fileContents, currentPosition + 0 * 4) * 1000, System.BitConverter.ToSingle(fileContents, currentPosition + 1 * 4) * 1000, System.BitConverter.ToSingle(fileContents, currentPosition + 2 * 4) * 1000); currentPosition += 3 * 4; } currentPosition += 2; // skip the attribute vol.addFaceTriangle(vector[2], vector[1], vector[0]); } } if (vol.faceTriangles.Count > 3) { simpleModel.volumes.Add(vol); return true; } return false; }
public static bool loadModelSTL_ascii(SimpleMeshCollection simpleModel, string filename, FMatrix3x3 matrix) { SimpleMesh vol = new SimpleMesh(); using (StreamReader f = new StreamReader(filename)) { // check for "SOLID" Vector3 vertex = new Vector3(); int n = 0; Point3 v0 = new Point3(0, 0, 0); Point3 v1 = new Point3(0, 0, 0); Point3 v2 = new Point3(0, 0, 0); string line = f.ReadLine(); Regex onlySingleSpaces = new Regex("\\s+", RegexOptions.Compiled); int lineCount = 0; while (line != null) { if (lineCount++ > 100 && vol.faceTriangles.Count == 0) { return(false); } line = onlySingleSpaces.Replace(line, " "); var parts = line.Trim().Split(' '); if (parts[0].Trim() == "vertex") { vertex.x = Convert.ToDouble(parts[1]); vertex.y = Convert.ToDouble(parts[2]); vertex.z = Convert.ToDouble(parts[3]); // change the scale from mm to micrometers vertex *= 1000.0; n++; switch (n) { case 1: v0 = matrix.apply(vertex); break; case 2: v1 = matrix.apply(vertex); break; case 3: v2 = matrix.apply(vertex); vol.addFaceTriangle(v0, v1, v2); n = 0; break; } } line = f.ReadLine(); } } if (vol.faceTriangles.Count > 3) { simpleModel.SimpleMeshes.Add(vol); return(true); } return(false); }