Method undo

Engine/source/environment/editors/guiRoadEditorCtrl.cpp:96–140

}

void GuiRoadEditorUndoAction::undo()
{
   DecalRoad *road = NULL;
   if ( !Sim::findObject( mObjId, road ) )
      return;

   // Temporarily save the roads current data.
   String materialAssetId = road->mMaterialAssetId;
   F32 textureLength = road->mTextureLength;
   F32 breakAngle = road->mBreakAngle;
   F32 segmentsPerBatch = road->mSegmentsPerBatch;
   Vector<RoadNode> nodes;   
   nodes.merge( road->mNodes );

   // Restore the Road properties saved in the UndoAction
   road->_setMaterial(materialAssetId);
   road->mBreakAngle = breakAngle;
   road->mSegmentsPerBatch = segmentsPerBatch;
   road->mTextureLength = textureLength;
   road->inspectPostApply();

   // Restore the Nodes saved in the UndoAction
   road->mNodes.clear();
   for ( U32 i = 0; i < mNodes.size(); i++ )
   {
      road->_addNode( mNodes[i].point, mNodes[i].width );      
   }

   // Regenerate the road
   road->regenerate();

   // If applicable set the selected road and node
   mRoadEditor->mSelRoad = road;
   mRoadEditor->mSelNode = -1;

   // Now save the previous Road data in this UndoAction
   // since an undo action must become a redo action and vice-versa
   mMaterialAssetId = materialAssetId;
   mBreakAngle = breakAngle;
   mSegmentsPerBatch = segmentsPerBatch;
   mTextureLength = textureLength;
   
   mNodes.clear();
   mNodes.merge( nodes );
}

bool GuiRoadEditorCtrl::onAdd()
{