-- @/=[C]:-1
function calcCenterOfPressureRel(...)
--local cog = obj:calcCenterOfGravityRel(true) + obj:getPosition()
local cop = obj:calcCenterOfPressureRel()
local copVec = obj:calcCenterOfPressureRel() + obj:getPosition()
local cop = obj:calcCenterOfPressureRel()
local copVec = obj:calcCenterOfPressureRel() + obj:getPosition()