graphics with PSTric..

value of 0 for the third number in curvature. The value −1, for example,makes the tangent at B parallel to the line AC. The pictures below show thechanges in the curve produced by varying this number.55Curvy TricksOpen and closed curvesInvisible endsCurve tweakingA new curve443321050 1 2 3 4 5curvature = 1 0.1 221050 1 2 3 4 5curvature = 1 0.1 1Online L A T E X TutorialPart II – GraphicsPSTricks44332211000 1 2 3 4 5 0 1 2 3 4 5curvature = 1 0.1 0 (Default)curvature = 1 0.1 –1Perhaps, the effect will be better seen, if we draw the tangents also atsome point. We do this in the next four pictures, taking the last threepoints as a sample:E Krishnan, CV Radhakrishnan and AJ Alexconstitute the graphics tutorial team.Comments and suggestions may be mailed totutorialteam@tug.org.inc○2002, 2003, The Indian T E X Users GroupThis document is generated by PDFT E X withhyperref, pstricks, pdftricks and pdfscreenpackages in an intel PC running GNU/LINUXand is released under LPPLThe Indian T E X Users GroupFloor iii, sjp Buildings, Cotton HillsTrivandrum 695014, indiahttp://www.tug.org.in 12/16