graphics with PSTric..

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4.3. Curve tweakingThe \psecurve is one way of changing the default shape of the curve that\pscurve produces. There are also ways to change the “tautness” of thecurve and also its “slope”. This is done by changing the values of thecurvature parameter. Its value is a triplet of numbers, with the “useful”values of each ranging from −1 to 2. We specify the values by settingCurvy TricksOpen and closed curvesInvisible endsCurve tweakingA new curvecurvature=number1 number2 number3The default set of values for these three numbers are 1, 0.1 and 0. We’lllook at each of these values separately to see what each signifies.The first number of curvature determines the tautness of the curve.As mentioned above, its default value is 1. Lower values make the curvetighter and higher values makes it looser. The pictures below, with thevalues of the curvature given underneath, illustrates this. The first picturefor example is produced by\pscurve[linecolor=Blue,%showpoints=true,%curvature=2 0.1 0]%(2,1)(1,2)(2,4)%(2.5,2)(4,4)(3.5,2.5)Note that only the first number in the curvature is changed in these fourcurves, the others retaining their default values. The value 0 for this numbermakes \pscurve join every pair of points with straight lines (so thatit becomes \psline) and further tightening through higher values bents itout of shape.Online L A T E X TutorialPart II – GraphicsPSTricksE 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 9/16
Curvy Tricks55Open and closed curves44Invisible endsCurve tweaking33A new curve221105430 1 2 3 4 5curvature = 2 0.1 005430 1 2 3 4 5curvature = 1 0.1 0 (Default)Online L A T E X TutorialPart II – GraphicsPSTricks221100 1 2 3 4 5curvature = 0 0.1 000 1 2 3 4 5curvature = –1 0.1 0The second number of curvature is again for tightening or looseningthe curve, but only the portions between certain pairs of points. SupposeA, B, C are three consecutive points specified. If angle ABC is less than 45degrees, then lower values for this second number makes the curve tighteraround B, and higher values makes it looser around B. If the angle is greaterthan 45 degrees, it does the reverse. The next four pictures illustrate thisbehavior for the set of points we have been using in all our examples. Notethat for these points the angle described above is greater than 45 degreesE 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 10/16
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Graphics with PSTricksGetting the p
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1.1. Getting the pointsAny picture
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Graphics with PSTricksThe PSTricks
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Graphics with PSTricksillustrated i
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Graphics with PSTricks\begin{pspict
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Graphics with PSTricks100 1 2In thi
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1.4. Ends of LinesLines can be prov
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parameter value descriptiondotsize
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Graphics with PSTricksThe default v
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1.5. Bent Lines and PolygonsAs in t
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“filled up” polygon. For exampl
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Graphics with PSTricksGetting the p
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1.6. Simple CurvesCircles, ellipses
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Page 33 and 34: Graphics with PSTricksGetting the p
Page 35 and 36: Graphics with PSTricksAnother curve
Page 37 and 38: Ordinary colorsMore colorsFill—in
Page 39 and 40: Colorful TricksOrdinary colorsMore
Page 41 and 42: \begin{pspicture}(0,0)(3,3)\psframe
Page 43 and 44: NAME CMYK COLOR NAME CMYK COLORGree
Page 47 and 48: 2.4. Custom colorsIf you are not sa
Page 49 and 50: 2.5. From one color to anotherThere
Page 51 and 52: \begin{center}\definecolor{myblue}{
Page 53 and 54: \pscircle[linestyle=none,%linewidth
Page 55 and 56: Borderline TricksDouble boundaryIns
Page 57 and 58: 3.1. Double boundaryIn the first ch
Page 59 and 60: doublesep=5pt,%doublecolor=Blue]%(1
Page 63 and 64: Borderline TricksDouble boundaryIns
Page 65 and 66: 3.3. Borders—visible or invisible
Page 69 and 70: 3.4. ShadowsAn object can be given
Page 71: \begin{pspicture}(0,0)(3.5,3.5)\psp
Page 77 and 78: A “closed” curve joining specif
Page 79 and 80: 4.2. Invisible endsthere’s a thir
Page 81: Curvy Tricks543543Open and closed c
Page 85 and 86: value of 0 for the third number in
Page 87 and 88: Curvy Tricks4.4. A new curveAnother
Page 89 and 90: This point, which we denote by z 12
Page 91 and 92: 5. More on CoordinatesCoordinate gr
Page 93 and 94: example:\psgrid(2,3)(1,2)(5,4)431 2
Page 95 and 96: More on Coordinatesparameter meanin
Page 97 and 98: Instead of scaling by the same amou
Page 99 and 100: 5.3. Another type of coordinatesThe
Page 101 and 102: \definecolor{PaleApricot}{cmyk}{0,0
Page 103 and 104: \begin{pspicture}(0,-0.5)(6,3.5)\Sp
Page 105 and 106: such that the required point has x-
Page 107 and 108: 5.5. Changing the systemIn drawing
Page 109 and 110: \begin{pspicture}(0,0)(4,4)\pspolyg
Page 111 and 112: Appendix—Math in PostScriptWe’v
Page 113 and 114: Placing ThingsPlacing and rotating
Page 115 and 116: Placing Things6.1. Placing and rota
Page 117 and 118: Placing Things\begin{pspicture}(0,1
Page 119 and 120: Placing Things98Placing and rotatin
Page 121 and 122: BASELINEheightwidthbydepthBASELINEP
Page 123 and 124: Placing ThingsFor vertically shifti
Page 125 and 126: Placing Things\definecolor{PaleApri
Page 127 and 128: Placing Thingsangle letter meaning
Page 129 and 130: Placing ThingsCPlacing and rotating
Page 131 and 132: We show below The positions of the
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Placing Things\begin{pspicture}(-4,
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Plotting TricksFunction plottingAxe
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7.1. Function plottingFor a mathema
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Plotting Tricks\begin{pspicture}(-2
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Plotting Tricks\psset{unit=0.5}\beg
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7.2. Axes of coordinatesOften in ma
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Plotting Tricks323(3,2)•Function
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We have included a background grid
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\begin{pspicture}(-3,-3)(3,3)\psaxe
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Note that the entries in the first
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Plotting Tricks\psset{unit=0.66}\re
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7.3. Data plottingThe command \pspl
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Plotting Tricks\begin{pspicture}(0,
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The last command we describe for da
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Plotting Tricks\savedata{\dirdata}[
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Simple customizationHigher level cu
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we can use \colgrid every time we n
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8.2. Higher level customizationApar
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Let’s now take a closer look at t
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this is the state we are in:Custom
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Custom Graphics\psset{unit=1.5cm}\b
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treating the current point as the f
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Custom Graphics\begin{pspicture}(-2
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Custom Graphics\begin{pspicture}(0,
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Custom Graphics\renewcommand{\pshla
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Custom Graphics\begin{pspicture}(0,
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