//============================================
void CWaterShape::getShapeInWorldSpace(NLMISC::CPolygon &poly) const
{
poly.Vertices.resize(_Poly.Vertices.size());
// compute the matrix of the object in world space, by using the default tracks
NLMISC::CMatrix objMat;
objMat.identity();
objMat.translate(_DefaultPos.getDefaultValue());
objMat.rotate(_DefaultRotQuat.getDefaultValue());
objMat.scale(_DefaultScale.getDefaultValue());
for (uint k = 0; k < _Poly.Vertices.size(); ++k)
{
poly.Vertices[k] = objMat * NLMISC::CVector(_Poly.Vertices[k].x, _Poly.Vertices[k].y, 0);
}
}
/** Load and compute the bbox of the models that are contained in a given instance group
* \return true if the computed bbox is valid
*/
static void computeIGBBox(const NL3D::CInstanceGroup &ig, CLightingBBox &result, TShapeMap &shapeMap)
{
result = CLightingBBox(); // starts with void result
bool firstBBox = true;
/// now, compute the union of all bboxs
for (CInstanceGroup::TInstanceArray::const_iterator it = ig._InstancesInfos.begin(); it != ig._InstancesInfos.end(); ++it)
{
CLightingBBox currBBox;
bool validBBox = false;
/// get the bbox from file or from map
if (shapeMap.count(it->Name)) // already loaded ?
{
currBBox = shapeMap[it->Name];
validBBox = true;
}
else // must load the shape to get its bbox
{
std::string shapePathName;
std::string toLoad = it->Name;
if (getExt(toLoad).empty()) toLoad += ".shape";
shapePathName = NLMISC::CPath::lookup(toLoad, false, false);
if (shapePathName.empty())
{
nlwarning("Unable to find shape %s", it->Name.c_str());
}
else
{
CIFile shapeInputFile;
if (shapeInputFile.open (shapePathName.c_str()))
{
NL3D::CShapeStream shapeStream;
try
{
shapeStream.serial (shapeInputFile);
// NB Nico :
// Deal with water shape -> their 'Receiving' box is set to 'void'
// this prevent the case where a huge surface of water will cause the zone it is attached to (the 'Zone'
// field in the villages sheets) to load all the zones that the water surface cover. (This caused
// an 'out of memory error' in the zone lighter due to too many zone being loaded)
// FIXME : test for water case hardcoded for now
CWaterShape *ws = dynamic_cast<CWaterShape *>(shapeStream.getShapePointer());
if (ws)
{
CAABBox bbox;
shapeStream.getShapePointer()->getAABBox(bbox);
currBBox.OccludingBox = CPotentialBBox(bbox); // occluding box is used, though the water shape
// doesn't cast shadow -> the tiles flag ('above', 'intersect', 'below water')
// are updated inside the zone_lighter
currBBox.ReceivingBox.IsVoid = true; // no lighted by the zone lighter !!!
currBBox.removeVoid();
shapeMap[it->Name] = currBBox;
}
else
{
CAABBox bbox;
shapeStream.getShapePointer()->getAABBox(bbox);
currBBox.OccludingBox = CPotentialBBox(bbox);
currBBox.ReceivingBox = CPotentialBBox(bbox);
currBBox.removeVoid();
shapeMap[it->Name] = currBBox;
}
validBBox = true;
}
catch (NLMISC::Exception &e)
{
nlwarning("Error while loading shape %s. \n\t Reason : %s ", it->Name.c_str(), e.what());
}
}
else
{
nlwarning("Unable to open shape file %s to get its bbox", it->Name.c_str());
}
}
}
if (validBBox)
{
/// build the model matrix
NLMISC::CMatrix mat;
mat.scale(it->Scale);
NLMISC::CMatrix rotMat;
rotMat.setRot(it->Rot);
mat = rotMat * mat;
mat.setPos(it->Pos);
/// transform the bbox
currBBox.transform(mat);
currBBox.removeVoid();
if (firstBBox)
{
result = currBBox;
firstBBox = false;
}
else // add to previous one
{
result.makeUnion(currBBox);
}
}
}
}