dmz::Boolean
dmz::RenderPluginPickOSG::source_to_world (
const Int32 SourcePosX,
const Int32 SourcePosY,
Vector &worldPosition,
Vector &normal,
Handle &objectHandle) {
Boolean result (False);
if (_core && _view.valid () && _viewport.valid ()) {
const float Height = _viewport->height ();
osgUtil::LineSegmentIntersector::Intersections isect;
if (_view->computeIntersections (
(float)SourcePosX,
Height - (float)SourcePosY,
isect,
_isectMask)) {
osgUtil::LineSegmentIntersector::Intersections::iterator it = isect.begin ();
while (!result && (it != isect.end ())) {
Boolean disabled (False);
osg::NodePath path = it->nodePath;
for (osg::NodePath::iterator node = path.begin ();
(node != path.end ()) && !disabled;
node++) {
if (*node) {
osg::Referenced *ref ((*node)->getUserData ());
if (ref) {
RenderObjectDataOSG *data (
dynamic_cast<RenderObjectDataOSG *> (ref));
if (data) {
if (!data->do_isect ()) { disabled = True; }
else { objectHandle = data->get_handle (); }
}
}
}
}
if (!disabled) {
worldPosition = to_dmz_vector (it->getWorldIntersectPoint ());
normal = to_dmz_vector (it->getWorldIntersectNormal ());
result = True;
}
else { it++; }
}
}
}
return result;
}
dmz::Boolean
dmz::RenderModuleIsectOSG::do_isect (
const IsectParameters &Parameters,
const IsectTestContainer &TestValues,
IsectResultContainer &resultContainer) {
if (_core) {
osg::ref_ptr<osg::Group> scene = _core->get_isect ();
// osg::ref_ptr<osg::Group> scene = _core->get_static_objects ();
osg::BoundingSphere bs = scene->getBound();
std::vector<osg::LineSegment*> lsList;// = new osg::LineSegment[TestValues];
osgUtil::IntersectVisitor visitor;
visitor.setTraversalMask (_isectMask);
UInt32 testHandle;
IsectTestTypeEnum testType;
Vector vec1, vec2;
std::vector<UInt32> handleArray;
std::vector<Vector> sourceArray;
TestValues.get_first_test (testHandle, testType, vec1, vec2);
do {
if (testType == IsectRayTest) {
vec2 = (vec1 + (vec2 * (bs.radius () * 2)));
}
osg::LineSegment *ls = new osg::LineSegment;
ls->set (to_osg_vector (vec1), to_osg_vector (vec2));
visitor.addLineSegment (ls);
lsList.push_back (ls);
handleArray.push_back (testHandle);
sourceArray.push_back (vec1);
} while (TestValues.get_next_test (testHandle, testType, vec1, vec2));
scene->accept (visitor);
IsectTestResultTypeEnum param = Parameters.get_test_result_type ();
bool closestPoint = (param == IsectClosestPoint);
bool firstPoint = (param == IsectFirstPoint);
if (closestPoint && !Parameters.get_calculate_distance ()) {
firstPoint = true;
closestPoint = false;
}
Boolean result (False);
for (unsigned int ix = 0; ix < lsList.size () && !result; ix++) {
osgUtil::IntersectVisitor::HitList resultHits;
resultHits = visitor.getHitList (lsList[ix]);
if (!resultHits.empty ()) {
for (unsigned int jy = 0; jy < resultHits.size (); jy++) {
Handle objHandle (0);
osgUtil::Hit currentHit = resultHits[jy];
Boolean disabled (False);
osg::CullFace *cf (0);
osg::NodePath path = currentHit.getNodePath ();
for (
osg::NodePath::iterator it = path.begin ();
(it != path.end ()) && !disabled;
it++) {
osg::Node *node (*it);
if (node) {
osg::StateSet *sSet = (node->getStateSet ());
if (sSet) {
osg::CullFace *cfTmp (
(osg::CullFace*)(sSet->getAttribute (
osg::StateAttribute::CULLFACE)));
if (cfTmp) {
cf = cfTmp;
}
}
osg::Referenced *r (node->getUserData ());
if (r) {
RenderObjectDataOSG *data (
dynamic_cast<RenderObjectDataOSG *> (r));
if (data) {
if (!data->do_isect ()) {
// Should never reach here now
disabled = True;
}
else {
objHandle = data->get_handle ();
}
}
}
}
}
if (!disabled) {
Vector lsPoint = to_dmz_vector (currentHit.getWorldIntersectPoint ());
IsectResult lsResult;
lsResult.set_isect_test_id (handleArray[ix]);
lsResult.set_point (lsPoint);
if (Parameters.get_calculate_object_handle ()) {
lsResult.set_object_handle (objHandle);
}
if (Parameters.get_calculate_normal ()) {
lsResult.set_normal (
to_dmz_vector (currentHit.getWorldIntersectNormal ()));
}
if (Parameters.get_calculate_distance ()) {
lsResult.set_distance ((lsPoint - sourceArray[ix]).magnitude ());
}
if (Parameters.get_calculate_cull_mode ()) {
UInt32 cullMask = 0;
if (cf) {
if (cf->getMode () == osg::CullFace::FRONT ||
cf->getMode () == osg::CullFace::FRONT_AND_BACK) {
cullMask |= IsectPolygonFrontCulledMask;
}
if (cf->getMode () == osg::CullFace::BACK ||
cf->getMode () == osg::CullFace::FRONT_AND_BACK) {
cullMask |= IsectPolygonBackCulledMask;
}
}
else {
cullMask |= IsectPolygonBackCulledMask;
}
lsResult.set_cull_mode (cullMask);
}
if (Parameters.get_calculate_object_handle ()) {
osg::Geode *hitObject = currentHit.getGeode ();
}
resultContainer.add_result (lsResult);
if (firstPoint) {
result = true;
}
}
}
}
}
if (closestPoint && resultContainer.get_result_count () > 1) {
IsectResult current;
resultContainer.get_first (current);
IsectResult closest (current);
double closestDist;
current.get_distance (closestDist);
while (resultContainer.get_next (current)) {
double testDist;
if (current.get_distance (testDist)) {
if (testDist < closestDist) {
closest = current;
}
}
}
IsectResultContainer closestContainer;
closestContainer.add_result (closest);
resultContainer = closestContainer;
}
}
return resultContainer.get_result_count () > 0;
}