Method Init

engine/Poseidon/Graphics/Rendering/Shape/Shadow.cpp:43–101

RemmemberShadow::RemmemberShadow() : _object(nullptr), _lightDir(NoInit), _splitOnly(false) {}

void RemmemberShadow::Init(Object* object, Vector3Par lightDir, int level, Matrix4Par pos, bool splitOnly)
{
    // splitOnly is used for object that should be split
    // but not shadow projected
    // such shapes also preserve original y offset
    _object = object;
    _lightDir = lightDir;
    _objectPos = pos;
    _level = level;
    _lastUsed = Glob.time;
    _splitOnly = splitOnly;
    if (splitOnly)
    {
        // copy source data
        _shadow = new Shape(*object->GetShape()->Level(level), false);
    }
    else
    {
        // A frozen-pose dynamic caster (settled corpse) shares its shape with
        // every other instance of the model — the shared shape holds whichever
        // instance animated last, so this object's pose must be skinned in
        // before projecting. Statics skip this (Animate is a no-op).
        const bool animatePose = !object->Static();
        if (animatePose)
        {
            object->Animate(level);
        }
        // retainStructure = false -> force duplicating source data
        _shadow = object->RecalcShadow(level, *object, false);
        if (animatePose)
        {
            object->Deanimate(level);
        }
    }
    if (_shadow)
    {
        _shadow->SurfaceSplit(GScene->GetLandscape(), object->Transform(), GLOB_ENGINE->ZShadowEpsilon(),
                              splitOnly ? object->Scale() : 0);
        // it is already fitted - prevent future surface fitting
        _shadow->CalculateMinMax();
        _shadow->AndSpecial(~OnSurface);
        _shadow->OrSpecial(IsOnSurface);
        // make sure buffer is regenerated
        _shadow->ReleaseVBuffer();
        // optimize it for HW rendering
        _shadow->FindSections();
        if (_shadow->NVertex() > 1024)
        {
            _shadow->ConvertToVBuffer(VBBigDiscardable);
        }
        else
        {
            _shadow->ConvertToVBuffer(VBSmallDiscardable);
        }

        // table should be exact - for best memory usage
        _shadow->Compact();
    }