Method Init

engine/Poseidon/World/Simulation/Animation/Animation.cpp:398–450

    _shape->InitPlanes();
    int index = _planes[i];
    return _shape->GetPlane(index);
}
const Poly& ConvexComponent::GetFace(int i) const
{
    // note: this function needs BuildFaceIndexToOffset
    // called on shape before using
    int index = _planes[i];
    Offset o = _shape->FaceIndexToOffset(index);
    return _shape->Face(o);
}

void ConvexComponent::Init(Shape* shape, const char* name)
{
    _shape = shape;
    _minMax[0] = VZero;
    _minMax[1] = VZero;
    int index = shape->FindNamedSel(name);
    if (index < 0)
    {
        return;
    }
    _minMax[0] = Vector3(+1e10, +1e10, +1e10);
    _minMax[1] = Vector3(-1e10, -1e10, -1e10);
    NamedSelection::DoDestruct();
    NamedSelection::DoConstruct(shape->NamedSel(index));

    int size = Size();
    {
        int index = (*this)[0];

        Vector3Val p = _shape->Pos(index);
        _minMax[0] = p;
        _minMax[1] = p;

        for (int si = 1; si < size; si++)
        {
            int index = (*this)[si];
            CheckMinMaxIter(_minMax[0], _minMax[1], _shape->Pos(index));
        }
    }

    // find bounding center
    _center = (_minMax[0] + _minMax[1]) * 0.5;
    // find bounding sphere radius
    float maxRadius2 = 0;
    for (int si = 0; si < size; si++)
    {
        int index = (*this)[si];
        float radius2 = shape->Pos(index).Distance2(_center);
        saturateMax(maxRadius2, radius2);
    }
    _radius = sqrt(maxRadius2);
    // convert face representation to half space
    const Selection& faces = Faces();
    // check first face of the selection
    int faceIndex = faces[0];