ofstream::write writing more than _count bytes (resolved)
Author
I'm writing an export plugin for 3ds max, and I'm having a huge problem using ofstream::write. Sometimes (generally as the number of floats gets larger, this problem gets worse) when I call write(whatever, someNumber) and check the position before and after, the actual difference is greater than someNumber. If this happens even once and only 1 byte extra is written, my entire model is screwed.
I made sure my plugin is thread-safe, and aside from that I'm at a loss as to why this might be happening, anyone have any ideas?
[Edited by - digitec devil on March 30, 2005 8:38:22 PM]
Author
ofstream file(name); IGameMesh* mesh = (IGameMesh*) currentObject; mesh->SetCreateOptimizedNormalList(); mesh->InitializeData(); int numFaces = 0; offby = 0; numFaces = mesh->GetNumberOfFaces(); file.write((char*)&numFaces, sizeof(int)); float *glVertices = new float[sizeof(float)*numFaces*9]; float *glNormals = new float[sizeof(float)*numFaces*9]; // Vertices for(int i = 0; i < numFaces; i++) { FaceEx * face = mesh->GetFace(i); Point3 vertex1 = mesh->GetVertex(face->vert[0], true); Point3 vertex2 = mesh->GetVertex(face->vert[1], true); Point3 vertex3 = mesh->GetVertex(face->vert[2], true); glVertices[i*9 ] = vertex1.x; glVertices[i*9 + 1] = vertex1.y; glVertices[i*9 + 2] = vertex1.z; glVertices[i*9 + 3] = vertex2.x; glVertices[i*9 + 4] = vertex2.y; glVertices[i*9 + 5] = vertex2.z; glVertices[i*9 + 6] = vertex3.x; glVertices[i*9 + 7] = vertex3.y; glVertices[i*9 + 8] = vertex3.z; } file.write((char*)glVertices, numFaces*36); // Normals for(int i = 0; i < numFaces; i++) { FaceEx * face = mesh->GetFace(i); Point3 vertex1 = mesh->GetNormal(face->norm[0]); Point3 vertex2 = mesh->GetNormal(face->norm[1]); Point3 vertex3 = mesh->GetNormal(face->norm[2]); glNormals[i*9 ] = vertex1.x; glNormals[i*9 + 1] = vertex1.y; glNormals[i*9 + 2] = vertex1.z; glNormals[i*9 + 3] = vertex2.x; glNormals[i*9 + 4] = vertex2.y; glNormals[i*9 + 5] = vertex2.z; glNormals[i*9 + 6] = vertex3.x; glNormals[i*9 + 7] = vertex3.y; glNormals[i*9 + 8] = vertex3.z; } file.write((char*)glNormals, numFaces*36); file.close();
[EDIT: Beat]
"ofstream file(name);" is opening the file in text mode, so that may be your problem. Try changing that to: "ofstream file(name, ios::binary );" and see if it changes anything.
"ofstream file(name);" is opening the file in text mode, so that may be your problem. Try changing that to: "ofstream file(name, ios::binary );" and see if it changes anything.
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