LFS with idea for pseudo-slider by Zen Biker Maniac. Created with GeoGebra
• Click and drag the green point on the slider from 0° to 360°.
The degree sign on the slider is JUST text (T1). You can right-click and select Edit to change it. All text needs to go between the double quotes at left or right. Use the number t in your definitions.
• Click and drag the blue point left of the slider to move the slider.
In the Algebra Window:
• Right-click on zsLength, select Redefine to change the length.
• Right-click and redefine zsRLeft to change the left limit.
• Right-click and redefine zsRRight to change the right limit.
On the GeoGebra command menu: use File -> Save to save your changes to a ggb file with the filename of your choice!
Try it yourself first!
• Pick an angle between 0° and 360°.
• In the box at left box, type in the value (no degree sign!) .
• Then click on the Set Angle button.
• The code is on this page (index.html). There are three parts.
1. One is the <script> code for the function setCoords - it is and goes right after the <body> tag.
2. The GeoGebra applet loader: code="geogebra.GeoGebraApplet" . This code needs to go between: <applet and (everything in purple with blanks on both sides).
3. The code to set the value is: setCoords('Zs_P',
(setXfield.value- )/ document.ggbApplet.getValue('zsScale')+ document.ggbApplet.getXcoord('Zs_1'), document.ggbApplet.getYcoord('Zs_1')
-It just looks complicated - but it is just "scaling the point " from the left limit and then placing it on the slider...
It sets the coordinates of the point Zs_P on the slider.
To calculate the x-coordinate, it takes the input value and and divides this result by Scale of the slider and adds the x-coordinate of the left point Zs_1 of the slider (see definition zst); the y-coordinate is just the y-coordinate of left point Zs_1.