Specify command of EditNormals modifier never works when it’s triggered by MaxScript.
There’s always an EXCEPTION_ACCESS_VIOLATION occurred:
Here is a simple script to reproduce (generated by macro recorder record action: create teapot > add editNormals modifier > select all normals > click Specify):
Teapot pos:[0,0,0] isSelected:on radius:22.8291 segs:4
modPanel.addModToSelection (Edit_Normals ()) ui:on
actionMan.executeAction 0 "40021"
$.modifiers[#Edit_Normals].EditNormalsMod.SetSelection #{1..530}
$.modifiers[#Edit_Normals].EditNormalsMod.Specify ()
$.modifiers[#Edit_Normals].EditNormalsMod.SetSelection #{}
I’ve tested with Max 2018, 2020.3 on two different PC but still the same problem.
Probably a 3ds Max bug, does anyone know workaround to use EditNormals Specify command with MaxScript?
the source code suggest it’s only valid for editable poly only so…
delete objects
poly = ConvertToPoly(Teapot pos:[0,0,0] isSelected:on radius:22.8291 segs:4)
--modPanel.addModToSelection (Edit_Normals ()) ui:on
addModifier poly (Edit_Normals ())
actionMan.executeAction 0 "40021"
$.modifiers[#Edit_Normals].EditNormalsMod.SetSelection #{1..530}
$.modifiers[#Edit_Normals].EditNormalsMod.Specify ()
$.modifiers[#Edit_Normals].EditNormalsMod.SetSelection #{}
works
if you can recompile the source then…
bool ret = pData->GetPolyNormals()->SpecifyNormals (mSelLevel, normalSelection);
// Also clear the explicitness of these normals:
if (pData->GetPolyNormals()->MakeNormalsExplicit (mSelLevel, normalSelection, false)) {
ret = true;
pData->InvalidateGeomCache();
}
should be replaced with something like…
bool ret;
if (pData->GetFlag (ENMD_TRIMESH))
{
ret = pData->GetTriNormals()->SpecifyNormals (mSelLevel, normalSelection);
// Also clear the explicitness of these normals:
if (pData->GetTriNormals()->MakeNormalsExplicit (mSelLevel, normalSelection, false)) {
ret = true;
pData->InvalidateGeomCache();
}
}
else
{
ret = pData->GetPolyNormals()->SpecifyNormals (mSelLevel, normalSelection);
// Also clear the explicitness of these normals:
if (pData->GetPolyNormals()->MakeNormalsExplicit (mSelLevel, normalSelection, false)) {
ret = true;
pData->InvalidateGeomCache();
}
}
will fix it for you in the
bool EditNormalsMod::EnfnSpecifyNormals (BitArray *normalSelection, INode *pNode)
function in the file EditNormals.cpp
@Klvnk Thanks a lot! Convert to poly before calling specify worked.
About source compiling, where can I find the source to recompile it?
you need to install the SDK (should be part of the max installation) and the correct version of Visual Studio.