Function mode provides an extremely powerful tool that can be used in many circumstances. Briefly, function mode provides a one-line interface to the CindyScript language. This one line can be either simply evaluated (so that the result is displayed) or displayed as an equation or evaluated with all side effects. Since CindyScript is a powerful language and even one line of CindyScript may encode very high level interactions, we will here demonstrate a few uses of function mode by means of a couple of examples.

When you are in function mode and click somewhere in the window, the following window will pop up:

The "enter a function" dialog

There you can enter one line of CindyScript code. The buttons allow you to determine how this line should be processed.

  • Text: calculates the result of the code and displays it.
  • Equation: displays the line entered literally, followed by an equation sign and the result of the evaluation. So a line "4+7" becomes the displayed equation "4+7 = 11".
  • Evaluate: evaluates the line and performs all side effects of the line (such as setting variables, drawing, or plotting).

We will present a few examples to illustrate the use of functions.

Calculations in Constructions

Consider the following drawing of a rectangle:

A rectangle

We want to calculate and display the area of this rectangle. A suitable CindyScript expression for calculating the area of this rectangle is |A,B|*|A,C|. We enter this function into the function dialog.

Entering the text

If we now press the "Text" button, we get the following picture on the left; if we press the "Equation" button, we get the picture on the right.

Text Equation

If we want to display the result in a custom text, we may achieve this by
entering the following code and hitting the "Text" button:

Creating a custom text

In this case, the line consists of a string to which the result of the calculation is appended. The result is again a string, which contains the desired text. The result in the window looks as follows:

Result of creating a custom text

Evaluation with Side Effects

Pressing the evaluate button allows for the evaluation of side effects. We will illustrate this feature by a slightly more sophisticated example. In the picture below the rectangle has been constructed in a way such that its perimeter remains constant when point C is moved. We will use this construction to analyze for which position of point C we obtain the largest area of the rectangle. Entering the line


into the function dialog will move the point F to a position whose x-coordinate is the same as that of point C. The y-coordinate of F will be the area. Thus while we move C we can watch point F and determine for which position of C it assumes its maximal y-value. In the figure on the left a locus is constructed (mover = C, tracer = F) that shows the areas for all possible positions of C.

Combining geometry and functions

Plotting Functions

As a final application we shall demonstrate how to use function mode for generating a plot of a function. For this we simply use the plot function of CindyScript and evaluate it via the function mode dialog. If the plot contains parameters that depend on the data of the elements in the drawing, then it is automatically updated as the elements are moved. In the example below, two sine waves are superimposed whose frequencies depend on the position of A. The code line is simply evaluated in the function mode dialog.

Plotting a function

Click Referencing

As in text mode it is possible to obtain the reference of a geometric element by simply clicking on it in an arbitrary view. This simplifies the process of entering a formula in the dialog box. Clicking on a text that contains a measured number (for instance a distance, an angle, or an area) produces a reference to this number. Clicking on the text of another function reproduces the defining text of this function.

Furthermore, it is possible by a press–drag–release operation with the mouse to measure the distance between two points directly. If, for instance, A and B are two points in a geometric view, then pressing the mouse over A, dragging to B, and releasing it will produce the text |A,B| in the function dialog.


Function mode allows for the calculating, evaluating, and plotting of functions via a one-line interface to CindyScript.

Contributors to this page: Kortenkamp , Richter and Kohler .
Page last modified on Monday 29 of August, 2011 [20:27:04 UTC] by Kortenkamp.

The content on this page is licensed under the terms of the License.

free viagra samplehentai girlsmature pussymilfseeker cialis samplescam clip movie nude webcammother incest order viagra online cialis ukanime rapeparis hilton phone numbers viagra alternatives cialis forum cialis free samplehot girls in pantiesmonster of cocks discount cialis cilias free viagra samplesfree chat rooms cilia structurefree cartoon sex comics buy cialis order viagrafree adult videosplump girl gallerypantyhose gallerycum on her face cheapest cialisbisexual moviestampa bukakehuge black cock thumbnails buy cialis onlineporn star cialis drugwomen having sex cheap generic viagra alternative to viagra natural viagra cheap viagraoral sexteen webcam strip videosnude spanish girlserotic sex cams movies viagra side effectscartoon adultdisney sex animenude blonde hairygang bang swinger cialis viagrabisexual free moviesgay twinkswebcam chat live xxxyoung teens order cialislatina girls thongscum loversjapanese girl viagra cheapyoung japanese girlsmr chews asian beavergangbang squadshoshone indiansmature wiveslive webcam chat girlsfree ebony viagra on lineasian ladyboysteen boys viagra pillsself bondage techniques cailisincest familyfree ebony cheap cialisgay amateur cialis genericbusty asian viagra onlinemature breasts viagra for women free viagrabig boobies cialis generic viagragloryhole gaylatinas in thongs female viagraindian tits viagra 6 free samplesamateur upskirt viagra alternativefree xxx video cialis online discountgalleries of teen girls cialis dosage cheap generic cialisparis hilton pornopussy cat dollsbrutal sexgay peopleblack milfsno tits discount viagrablonde hairy pussyshemale animefree hardcore moviesmom strips for sonfat titscelebrity legsdouble anal levitra vs cialis cialis tadalafil cialis cheapgay bdsmcelebrities exposed viagra generic alternatives to viagra viagra canadabestialitypink porn stars viagra jokesclips of teen sexchicks suck horse cock online viagrasex with horsespainful analglory holes floridafree american bukkake cialis online buy viagrabig cock cum free cialisteen gay porn cialis side effects herbal viagra best price viagra purchase cialis cialis soft tabs cialis vs viagrafree fat girl webcamfree porn movie clipsoral penis suckingebony hardcore viagra pricepantyhose crossed legs cialis and levitralesbiennesblonde boobs buy viagra online