odb: dbChip::getBBox and dbChipInst::getBBox

Signed-off-by: osamahammad21 <[email protected]>

Author: osamahammad21

src/odb/include/odb/3dblox.h

@@ -38,6 +38,7 @@ class ThreeDBlox
   dbChipRegionInst* resolvePath(const std::string& path,
                                 std::vector<dbChipInst*>& path_insts);
   void readHeaderIncludes(const std::vector<std::string>& includes);
+  void calculateSize(dbChip* chip);
 
   utl::Logger* logger_ = nullptr;
   odb::dbDatabase* db_ = nullptr;

src/odb/include/odb/db.h

@@ -7072,6 +7072,8 @@ class dbChip : public dbObject
 
   dbTech* getTech() const;
 
+  Rect getBBox() const;
+
   ///
   /// Create a new chip.
   /// Returns nullptr if there is no database technology.
@@ -7181,6 +7183,8 @@ class dbChipInst : public dbObject
 
   dbTransform getTransform() const;
 
+  Rect getBBox() const;
+
   dbSet<dbChipRegionInst> getRegions() const;
 
   dbChipRegionInst* findChipRegionInst(dbChipRegion* chip_region) const;

src/odb/src/3dblox/3dblox.cpp

@@ -77,10 +77,21 @@ void ThreeDBlox::readDbx(const std::string& dbx_file)
   for (const auto& [_, connection] : data.connections) {
     createConnection(connection);
   }
-
+  calculateSize(db_->getChip());
   db_->triggerPostRead3Dbx(chip);
 }
 
+void ThreeDBlox::calculateSize(dbChip* chip)
+{
+  Rect box;
+  box.mergeInit();
+  for (auto inst : chip->getChipInsts()) {
+    box.merge(inst->getBBox());
+  }
+  chip->setWidth(box.dx());
+  chip->setHeight(box.dy());
+}
+
 void ThreeDBlox::readHeaderIncludes(const std::vector<std::string>& includes)
 {
   for (const auto& include : includes) {

src/odb/src/db/dbChip.cpp

@@ -591,6 +591,20 @@ dbTech* dbChip::getTech() const
   return (dbTech*) db->_tech_tbl->getPtr(chip->tech_);
 }
 
+Rect dbChip::getBBox() const
+{
+  _dbChip* _chip = (_dbChip*) this;
+  const int llx = 0 - _chip->scribe_line_east_ - _chip->seal_ring_west_;
+  const int lly = 0 - _chip->scribe_line_south_ - _chip->seal_ring_south_;
+  const int urx
+      = _chip->width_ + _chip->scribe_line_east_ + _chip->seal_ring_east_;
+  const int ury
+      = _chip->height_ + _chip->scribe_line_north_ + _chip->seal_ring_north_;
+  Rect box(llx, lly, urx, ury);
+  box.moveTo(_chip->offset_.x(), _chip->offset_.y());
+  return box;
+}
+
 dbChip* dbChip::create(dbDatabase* db_,
                        dbTech* tech,
                        const std::string& name,

src/odb/src/db/dbChipInst.cpp

@@ -160,6 +160,15 @@ dbTransform dbChipInst::getTransform() const
                      Point(obj->loc_.x(), obj->loc_.y()));
 }
 
+Rect dbChipInst::getBBox() const
+{
+  _dbChipInst* _chipinst = (_dbChipInst*) this;
+  Rect box = getMasterChip()->getBBox();
+  box.moveTo(_chipinst->loc_.x(), _chipinst->loc_.y());
+  getTransform().apply(box);
+  return box;
+}
+
 dbSet<dbChipRegionInst> dbChipInst::getRegions() const
 {
   _dbChipInst* _chipinst = (_dbChipInst*) this;