Hello everyone,
This is my first post in this forum, so I hope everything is fine in it.
Over the last few months I have been developing an ArchiCAD add-on for the company I work at. The Add-On is pretty much finished, however, there is one issue that bugs us.
At some point in the addon, I am creating a bunch of morphs. We want the morphs to have Hard Hidden edges. I noticed that the API setting for this (HardVisible, HardHidden and SoftHidden) basically serves the same purpose as the EdgeType buttons in the AC GUI (Hard, Hidden and Soft).
typedef enum {
APIMorphEdgeType_SoftHiddenEdge,
APIMorphEdgeType_HardHiddenEdge,
APIMorphEdgeType_HardVisibleEdge
} API_MorphEdgeTypeID;
However, no matter how many different things I try, I cannot get the morphs to be imported with the hard-hidden setting. They always get imported as hard-visible.
Note that, selecting all the morphs inside the GUI and manually clicking the "Hidden Edge" button, succeeds to set the morphs edge type, and the result is what we want.
Also note that my addon also creates Mesh objects, which do succesfuly get imported with hidden edges. Our problem is only with the morphs.
Here is a summary of how I am creating the morphs (I will omit very long parts of the code, so there might be errors in the attached code):
Please note: The AC class is a small static class that I created that wraps the very repetitive ACAPI calls.
GSErrCode Importer::CreateMorph(...) {
API_Element acMorph;
API_ElementMemo memo;
GSErrCode err = AC::InitAPIElement(API_MorphID, acMorph, memo); // A small function that wraps the BNZeroMemory functions and all that stuff
// Note: I am clearly setting the HardHiddenEdge
acMorph.morph.edgeType = APIMorphEdgeType_HardHiddenEdge;
acMorph.morph.bodyType = APIMorphBodyType_SolidBody;
acMorph.morph.castShadow = true;
acMorph.morph.receiveShadow = true;
// Transformation matrix for morph.
acMorph.morph.tranmat = AC::GetMorphTMX(*T);
// construct the body structure
auto bodyData = AC::InitMorphBodyData();
// Set the body shape, materials, etc (long code so I ommit it)
// close the body and copy it to the memo
err = ACAPI_Body_Finish (bodyData, &memo.morphBody, &memo.morphMaterialMapTable);
if(err != NoError)
... handling errors
err = ACAPI_Body_Dispose (&bodyData);
if(err != NoError)
... handling errors
err = ACAPI_Element_Create (&acMorph, &memo);
if(err != NoError)
... handling errors
ACAPI_DisposeElemMemoHdls (&memo);
return err;
}
Once the addon finishes its execution, the morphs have the Hard Visible edge type.
Furthermore, if I do the following while debugging:
void AC::SetMorphHiddenEdges(API_Guid g)
{
API_Element elem;
GetElementFromGuid(g, &elem);
// elem.morph.edgeType = APIMorphEdgeType_HardVisibleEdge although it was set in the CreateMorphFunction to be HardHidden???
// Explicitly set it to hard hidden
elem.morph.edgeType = APIMorphEdgeType_HardHiddenEdge;
auto err = ACAPI_Element_Change(&elem, nullptr, nullptr, 0, true);
// err is NoError!
GetElementFromGuid(g, &elem);
// elem.morph.edgeType is hardvisible again!
return;
}
it is clearly shown by my debugger that after calling the Element Change function, and retrieving the morph again by its guid, the edge type has been reset again to the hard visible.
I also tried using this method, with no success:
void AC::SetMorphHiddenEdges(API_Guid g)
{
API_Element elem;
API_Element pars;
API_Element mask;
BNZeroMemory(&elem, sizeof(API_Element));
GetElementFromGuid(g, &elem);
// elem.morph.edgeType is hardVisible, lets try to fix that...
BNZeroMemory(&pars, sizeof(API_Element));
BNZeroMemory(&mask, sizeof(API_Element));
ACAPI_ELEMENT_MASK_CLEAR(mask);
ACAPI_ELEMENT_MASK_SET(mask, API_MorphType, edgeType);
pars.header.type = API_MorphID;
pars.morph.edgeType = APIMorphEdgeType_HardHiddenEdge;
GS::Array<API_Guid> guids({ g });
auto err = ACAPI_Element_ChangeMore(guids, &pars, nullptr, &mask, 0, true);
BNZeroMemory(&elem, sizeof(API_Element));
GetElementFromGuid(g, &elem);
// elem.morph.edgeType is still hard visible!
}
Am I missing something? How can I change this setting from the API?
Any help is greatly appreciated. Also, if I must post some extra information, please do not hesitate to ask me!
