import java.awt.Shape;\r
import java.awt.geom.Ellipse2D;\r
import java.awt.geom.Rectangle2D;\r
-import java.beans.PropertyVetoException;\r
\r
import javax.measure.quantity.Area;\r
import javax.measure.quantity.Length;\r
\r
import org.jscience.physics.amount.Amount;\r
\r
-import sun.reflect.ReflectionFactory.GetReflectionFactoryAction;\r
-\r
-import com.billkuker.rocketry.motorsim.Grain;\r
-import com.billkuker.rocketry.motorsim.MotorPart;\r
import com.billkuker.rocketry.motorsim.grain.ExtrudedGrain;\r
import com.billkuker.rocketry.motorsim.visual.Editor;\r
import com.billkuker.rocketry.motorsim.visual.GrainPanel;\r