void CutMesh(Mesh cutMesh, GameObject cutMeshGO, string name)
{
string cutMeshOff = ObjectFileFormat.MeshToOff(cutMesh, cutMeshGO.transform);
StreamWriter strw = new StreamWriter("./Assets/Models/" + cutMeshGO.name + ".off");
strw.Write(cutMeshOff);
strw.Close();
string cuttedMeshOff = System.IO.File.ReadAllText("./Assets/Models/squirrel.off");
StringBuilder strB = new StringBuilder();
//Extract transformation matrix
Matrix4x4 transformationMatrix = cuttedMeshTransform.localToWorldMatrix;
strB.Append(transformationMatrix.m00).AppendLine();
strB.Append(transformationMatrix.m01).AppendLine();
strB.Append(transformationMatrix.m02).AppendLine();
strB.Append(transformationMatrix.m03).AppendLine();
strB.Append(transformationMatrix.m10).AppendLine();
strB.Append(transformationMatrix.m11).AppendLine();
strB.Append(transformationMatrix.m12).AppendLine();
strB.Append(transformationMatrix.m13).AppendLine();
strB.Append(transformationMatrix.m20).AppendLine();
strB.Append(transformationMatrix.m21).AppendLine();
strB.Append(transformationMatrix.m22).AppendLine();
strB.Append(transformationMatrix.m23).AppendLine();
strw = new StreamWriter("./Assets/models/matrix.txt");
strw.Write(strB.ToString());
strw.Close();
IntPtr cuttedMeshPtr = Marshal.StringToHGlobalAnsi(cuttedMeshOff);
IntPtr cuttedMeshTransformPtr = Marshal.StringToHGlobalAnsi(strB.ToString());
IntPtr cutMeshPtr = Marshal.StringToHGlobalAnsi(cutMeshOff);
IntPtr ptrResult = CGALController.booleanOperationClean(cuttedMeshPtr, cuttedMeshTransformPtr, cutMeshPtr, Marshal.StringToHGlobalAnsi("difference"));
//Convert IntPtr to string
string result = Marshal.PtrToStringAnsi(ptrResult);
//exportOff (result, "mesh" + Time.fixedDeltaTime);
// Open string stream on the result off string
byte[] byteArray = Encoding.UTF8.GetBytes(result);
MemoryStream stream = new MemoryStream(byteArray);
//Convert off string to Mesh and add it to scene
Mesh myMesh = ObjectFileFormat.OffToMesh(new StreamReader(stream));
stream.Close();
myMesh.RecalculateNormals();
ObjExporter.MeshToFile(myMesh, name, "BenchMat");
addMeshToSceneAndExport(name, myMesh, transform.GetComponent <Transform> ().localScale.x);
}
private bool Intersects(GameObject cutGO, GameObject go2)
{
if (cutGO.GetComponent <MeshCollider> ().bounds.Intersects(go2.GetComponent <MeshCollider> ().bounds))
{
string cutMeshOff = ObjectFileFormat.MeshToOff(cutGO.GetComponent <MeshFilter> ().mesh, cutGO.transform);
string cuttedMeshOff = ObjectFileFormat.MeshToOff(go2.GetComponent <MeshFilter> ().mesh, go2.transform);
int result = CGALController.checkIntersection(Marshal.StringToHGlobalAnsi(cuttedMeshOff), Marshal.StringToHGlobalAnsi(cutMeshOff));
if (result == 1)
{
return(true);
}
}
return(false);
}
public void onClickBooleanOperation(string name)
{
//Get GameObjects and their mesh from scene
//GameObject go1 = GameObject.Find ("bunny");
GameObject go1 = selectableObjects[0].gameObject;
GameObject go2 = selectableObjects[1].gameObject;
MeshCollider col1 = go1.GetComponent <MeshCollider>();
MeshCollider col2 = go2.GetComponent <MeshCollider>();
if (col1.bounds.Intersects(col2.bounds))
{
Mesh mesh1 = go1.GetComponent <MeshFilter>().mesh;
Mesh mesh2 = go2.GetComponent <MeshFilter>().mesh;
//Convert mesh to off string to IntPtr
IntPtr ptr1 = Marshal.StringToHGlobalAnsi(ObjectFileFormat.MeshToOff(mesh1, go1.transform));
IntPtr ptr2 = Marshal.StringToHGlobalAnsi(ObjectFileFormat.MeshToOff(mesh2, go2.transform));
//Boolean union computation
IntPtr ptrResult = CGALController.booleanOperation(ptr1, ptr2, Marshal.StringToHGlobalAnsi(name));
//Convert IntPtr to string
string result = Marshal.PtrToStringAnsi(ptrResult);
/*Debug.Log (result);
* //Write the computed off in a file
* StreamWriter strW = new StreamWriter ("./Assets/result.off");
* strW.Write (result);
* strW.Close ();*/
// Open string stream on the result off string
byte[] byteArray = Encoding.UTF8.GetBytes(result);
MemoryStream stream = new MemoryStream(byteArray);
//Convert off string to Mesh and add it to scene
addMeshToScene("result", ObjectFileFormat.OffToMesh(new StreamReader(stream)), 1f);
//Remove previous objects from scene
Destroy(go1);
Destroy(go2);
}
else
{
Debug.Log("Selected objects do not overlap");
}
}
