hi all, i want to draw a specified length line on vtkImageCanvasSource2D,How to specify the length in mm? -- View this message in context: http://vtk.1045678.n5.nabble.com/How-to-draw-a-5mm-line-with-vtkImageCanvasSource2D-tp4957060p4957060.html Sent from the VTK - Users mailing list archive at Nabble.com.