Getting slider value in its On-Update-script then update other variables

I am trying to build a simplified rack-and-pinion steering mechanism.

So, the rack displacement should affect the horizontal position of both right and left joints.

then you have to add/subtract the rack displacement in the x-coordinate of both right and left joints

Ups, I saw your script part later

• Its not necessary to use script,
• use slider in definition of RackLeftJoint=((-RackLength) / 2 + RackDisplacement , 0)

• SetValue is used to set a value not a definition
• Sets the double value of the object with the given name. Note: if the specified object is boolean, use a value of 1 to set it to true and any other value to set it to false. For any other object type, nothing is done.

• SetValue expects the name of a variable, nothing else

• access a point with
• void setCoords(String objName, double x, double y)

• RackLeftJoint, RackRightJoint are bounded variables, they have a definition dependent on other variable - you cannot overwrite bounded variables by script only free variables

I am already using the definition

RackLeftJoint=((-RackLength) / 2 + RackDisplacement , 0)

in my main document but it takes a lot of processing time with the other objects (not shown in my minimal example here).

May I know why

app.setCoords("RackRightJoint" , RackLength/2 + RackDisplacement,0 );

doesn't work? or how to make it work?

I would be grateful if you could attach a file of your idea.

See last addion of my last answer, but what should javascript change to processing time?

I believed in what is written here https://wiki.geogebra.org/e... unless I didn't understand it correctly.

Make Rack... to free variables

RackLeftJoint = (-327.5, 0)

RackRightJoint = (367.5, 0)

RackLength = app.getValue("RackLength");
RackDisplacement = app.getValue("RackDisplacement");
app.setCoords("RackRightJoint", RackLength / 2 + RackDisplacement, 0);
app.setCoords("RackLeftJoint", -RackLength / 2 + RackDisplacement, 0);

but this is redundant I do not do a job by script witch is better done by processing commands

https://wiki.geogebra.org/e...

avoid scripting at all if possible

@Michael which is self-contradictory to the following lines encouraging using JavaScript commands instead of normal assignment ones.

No, it's not. Scripting = typed into script tabs

@Michael So, do you mean I am encouraged to write down ggbApplet.setValue(a , c+b) in the input bar/field instead of a = c+b ?