#include <gp.hxx>
#include <gp_Vec.hxx>
#include <gp_XYZ.hxx>
+#include <Message.hxx>
+#include <Message_Messenger.hxx>
#include <Message_ProgressIndicator.hxx>
#include <Message_ProgressSentry.hxx>
#include <OSD.hxx>
// constants
static const size_t HEADER_SIZE = 84;
static const size_t SIZEOF_STL_FACET = 50;
-static const size_t STL_MIN_FILE_SIZE = 284;
static const size_t ASCII_LINES_PER_FACET = 7;
static const int IND_THRESHOLD = 1000; // increment the indicator every 1k triangles
Handle(StlMesh_Mesh) RWStl::ReadBinary (const OSD_Path& thePath,
const Handle(Message_ProgressIndicator)& /*theProgInd*/)
{
- Standard_Integer NBFACET;
Standard_Integer ifacet;
Standard_Real fx,fy,fz,fx1,fy1,fz1,fx2,fy2,fz2,fx3,fy3,fz3;
Standard_Integer i1,i2,i3,lread;
// compute file size
Standard_Size filesize = theFile.Size();
- if ( (filesize - HEADER_SIZE) % SIZEOF_STL_FACET !=0
- || (filesize < STL_MIN_FILE_SIZE)) {
+ // don't trust the number of triangles which is coded in the file sometimes it is wrong
+ Standard_Integer NBFACET = (Standard_Integer)((filesize - HEADER_SIZE) / SIZEOF_STL_FACET);
+ if (NBFACET < 1)
+ {
Standard_NoMoreObject::Raise("RWStl::ReadBinary (wrong file size)");
}
- // don't trust the number of triangles which is coded in the file
- // sometimes it is wrong, and with this technique we don't need to swap endians for integer
- NBFACET = (Standard_Integer)((filesize - HEADER_SIZE) / SIZEOF_STL_FACET);
+ theFile.Seek (80, OSD_FromBeginning);
+ theFile.Read (adr, 4, lread);
+ Standard_Integer aNbTrisInHeader = (((char* )buftest)[3] << 24) | (((Standard_Byte* )buftest)[2] << 16)
+ | (((Standard_Byte* )buftest)[1] << 8 ) | (((Standard_Byte* )buftest)[0] << 0 );
+ if (NBFACET < aNbTrisInHeader)
+ {
+ Message::DefaultMessenger()->Send (TCollection_AsciiString ("RWStl - Binary STL file defines more triangles (") + aNbTrisInHeader
+ + ") that can be read (" + NBFACET + ") - probably corrupted file",
+ Message_Warning);
+ }
+ else if (NBFACET > aNbTrisInHeader)
+ {
+ Message::DefaultMessenger()->Send (TCollection_AsciiString ("RWStl - Binary STL file defines less triangles (") + aNbTrisInHeader
+ + ") that can be read (" + NBFACET + ") - probably corrupted file",
+ Message_Warning);
+ }
+ else if ((filesize - HEADER_SIZE) % SIZEOF_STL_FACET != 0)
+ {
+ Message::DefaultMessenger()->Send (TCollection_AsciiString ("RWStl - Binary STL file has unidentified tail"),
+ Message_Warning);
+ }
// skip the header
theFile.Seek(HEADER_SIZE,OSD_FromBeginning);