false false false false false false true 0 DESCRIPTION_EDITOR Magnetic Bar Field true false _default_ true 10 2 true VARIABLE_EDITOR Field Vars true false VARIABLE_EDITOR Display Vars true false VARIABLE_EDITOR ODE Vars true false CODE_EDITOR Init Page true false ODE_EDITOR Evol Page true false ERROR_EDITOR Error handling code true false ANY_ERROR t dt omega -k*(Math.sin(deltaTheta))-b*omega RungeKuttaFehlberg 10000 0.00001 false false false false CODE_EDITOR FixRel Page true false 0)omega=Math.min(omega,Math.PI); // keeps compass from spinning wildly else omega=Math.max(omega,-Math.PI); ]]> LIBRARY_EDITOR Compute Field true false LIBRARY_EDITOR Get B Value true false LIBRARY_EDITOR Random Location true false true Elements.Frame mainFrame true true Elements.PlottingPanel vectorFieldPlottingPanel mainFrame center Elements.SimpleVectorField2D vectorField2D vectorFieldPlottingPanel true Elements.Group2D markerGroup vectorFieldPlottingPanel Elements.Shape2D leftMarker markerGroup Elements.Shape2D rightMarker markerGroup Elements.Shape2D middleMarker markerGroup Elements.Text2D dragMe markerGroup Elements.Text2D toMagnetPosition markerGroup Elements.Image2D imageMagnet vectorFieldPlottingPanel Elements.Text2D text vectorFieldPlottingPanel false Elements.Group2D compassGroup vectorFieldPlottingPanel Elements.Shape2D backGroundShape compassGroup Elements.Image2D imageCircle compassGroup Elements.Arrow2D compassArrow compassGroup Elements.Shape2D compassPivotShape compassGroup Elements.Shape2D textBoxShape compassGroup Elements.Text2D fieldText compassGroup true Elements.Panel controlPanel mainFrame south true Elements.Panel buttonPanel controlPanel west Elements.Button resetButton buttonPanel Elements.TwoStateButton hideMagnetButton buttonPanel true Elements.Panel randomPanel controlPanel center Elements.Button randomizeButton randomPanel west false Elements.Panel checkPanel controlPanel east Elements.CheckBox intensityCheckBox checkPanel