PSTricks - Open Computing Facilitylatex/f09/homeworks/week6/beamer_… · Polygons Curves Formulas Examples Polygons are similar to lines, but the path is automatically closed. The

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PolygonsCurves

PSTricks

Evelyn Crofts

week11

Evelyn Crofts PSTricks

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PolygonsCurves

LinesFormulasExamples

PolygonsFormulasExamples

CurvesBezier CurvesParabolasTwo More Curves


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PolygonsCurves

What is PSTricks?


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PolygonsCurves

What is PSTricks?

◮ A Package for making images.


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PolygonsCurves

What is PSTricks?

◮ A Package for making images.◮ Most useful for polygons, lines, etc. But it can get pretty

fancy.


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PolygonsCurves

What is PSTricks?

◮ A Package for making images.◮ Most useful for polygons, lines, etc. But it can get pretty

fancy.◮ As the name tries to tell you most forcefully, this needs to

compile into PS! TeXnicCenter also has a LaTeX ⇒ PS ⇒PDF compiler.


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FormulasExamples

Lines\ psline[par]arrows(x0,y0)(x1,y1)(xn,yn)This draws a line through the list of coordinates. Someparameters are


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1. linewidth=(num)(units) (Default .8pt)


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2. linearc=(num) (Default 0)


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3. linecolor=(num)(units)


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3. linecolor=(num)(units)

4. showpoints=true/false


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The following is defined by this command\psline[linewidth=2pt,linearc=.25]{->}(4,0)(0,-1)(2,-2)


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(0,0) is set to be Latex’s current position. So, if you forget todouble space after your text, you will get an image that mayoverlap. For example\psline[linewidth=2pt,linearc=.25]{->}(1,0)(3,2)(2,0)


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Another thing to look out for is that these graphics do not havea defined space in which they live. This means that text after agraphic will also overlap it unless you include a command tomove the text lower or to one side. You may use (for example)\vspace{1in} to add the space that the picture takes up.


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FormulasExamples

Some more examples:\psline[linewidth=2pt,linecolor=blue]{-}(0,0)(.5,-1)(1,0)(1.5,-1)(2,0)


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Some more examples:\psline[linewidth=2pt,linecolor=blue]{-}(0,0)(.5,-1)(1,0)(1.5,-1)(2,0)\psline[linewidth=.8pt,linearc=.1,linecolor=magenta]{<->}(5,0)(4.5,-1)(5.5,-1)(5.1,0)


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Some more examples:\psline[linewidth=2pt,linecolor=blue]{-}(0,0)(.5,-1)(1,0)(1.5,-1)(2,0)\psline[linewidth=.8pt,linearc=.1,linecolor=magenta]{<->}(5,0)(4.5,-1)(5.5,-1)(5.1,0)

\psline[showpoints=true, linecolor=green]

{-}(8,0)(9,0)(10,-.5)(11,0)

b b

b

b


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FormulasExamples

Polygons


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Polygons are similar to lines, but the path is automaticallyclosed. The general form is\pspolygon[par](x0,y0)(x1,y1)(x2,y2)(xn,yn)Note that the line function really doesn’t like to be given aclosed path, which is why we must use this new command.


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To draw circles, we use the command\pscircle*[par](x0,y0){radius}.The pamameters are the ones we have seen before, (x0,y0) isthe center, and radius refers to ... never mind.


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\pspolygon[linewidth=1.5pt](0,2)(1,2) (Note thatif you only use two (nontrivial) points, pspolygon will add theorigin).


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\pspolygon*[linearc=.2,linecolor=green](3,0)(3,2)(6,0)(6,2)


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\pspolygon*[linearc=.3,linecolor=red](.6,1)(1,2)(2,1.5)(3,2)(3.4,1)(2,0)


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\pscircle*[par](x0,y0){radius}

With these objects, it is easy to control their exact placementvia the coordinates.


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Bezier CurvesParabolasTwo More Curves

Curves

b

b

b

b

b b b b


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Bezier Curves“\psbezier draws a bezier curve with the four control points.The curve starts at the first coordinate, tangent to the lineconnecting to the second coordinate. It ends at the lastcoordinate, tangent to the line connecting to the thirdcoordinate. The second and third coordinates, in addition todetermining the tangency of the curve at the endpoints, alsopull the curve towards themselves.” For example:

b

b

b


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The general form is\psbezier[par]{arrows}(x0,y0)(x1,y1)(x2,y2)(x3,y3)the parameters and arrow commands are the same as thosewe used for lines.


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Parabolas\parabola*[par]{arrows}(x0,y0)(x1,y1)The first coordinate is a point through which the parabolapasses, and the second is its max or min. For example,\parabola{<->}(4,3)(2,0) forms a unique parabola.

b

b

b

b

b b b b


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Two More CurvesThe following two functions creates a curve that goes throughthe points you give it.\pscurve*[par]{arrows}(x1,y1)(xn,yn)\psecurve*[par]{arrows}(x1,y1)(xn,yn)]The second one differs in that it does not extend the curve tothe endpoints (it just uses them to estimate the shape of thecurve through the other points). The e in the function name isrelated to this effect.


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\pscurve[showpoints=true]{<->}(0,1.3)(0.7,1.8)(3.3,0.5)(4,1.6)(0.4,0.4)\psecurve[showpoints=true]{<->}(5,0)(5,1.3)(5.7,1.8)(8.3,0.5)(9,1.6)(5.4,0.4)(5,1)

b

b

b

b

b

b


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Many thanks to the PSTricks User’s Guide by Timothy VanZandt.If you would like to know more about PSTricks

RTFM!

http://download.tuxfamily.org/viettug/pstricks_user_guide_en-1.pdf


Documents

PSTricks - Open Computing Facilitylatex/f09/homeworks/week6/beamer_… · Polygons Curves Formulas Examples Polygons are similar to lines, but the path is automatically closed. The