How can I make objects to move in a circular path?

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I want to move a circle along a circular path(circumference of another circle). How can i do it?Any help will be appreciated but not links from google. Because i searched for it but couldnot find any help about my task. Article explaining it will be more appreciated.and i think there is no need of source.

What I have tried:

i tried moving x and y co-ordinates of object but it always moves in horizontal or vertical line

Posted 26-Dec-17 0:56am

User 13275593

Updated 26-Dec-17 1:31am

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Afzaal Ahmad Zeeshan 26-Dec-17 7:03am

What objects? What framework are you using?

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OriginalGriff · Accepted Answer · 2017-12-26T01:31:00

Solution 1

Circular movement isn't complicated, provided you change the x and y coordinates correctly: for a straight line, x_n+1 = x_n + c₁ and y_n+1 = y_n + c₂ where c1 and c2 are constant values.
For a circle, they aren't constants - they need to be recalculated for each step:
x_n = r * cos(a) and y_n = r * sin(a) where r is the radius and a in the angle in radians. For each step, you change a slightly (how much depends on you and how accurate you need your circle: the bigger the increment, the less circular and the more polygonal it looks). Try 0.1, and check it's value against pi * 2 to see if you have reached the end of the circle.

Posted 26-Dec-17 1:31am

OriginalGriff

Comments

[no name] 26-Dec-17 7:36am

Please give me sample code.

OriginalGriff 26-Dec-17 7:39am

You are kidding, right?
You can't convert
x = r * cos(a)
into VB yourself?

[no name] 26-Dec-17 7:41am

I am confusing in defining variables

OriginalGriff 26-Dec-17 7:54am

You can;t define a variable on your own? :OMG:

Dim nameOfMyVariable As typeOfMyVariable = initialValueForMyVariable

E.g.:

Dim i As Integer = 666

You need to go back to basics and ready through your first few classes again...

[no name] 26-Dec-17 8:34am

i mean can you tell me values for angle and radius(as sample) and then tell new coordinates of object

OriginalGriff 26-Dec-17 8:45am

How the heck do you expect me to know what radius you want your circle to have? Try 100. If that's too small, increase it. If that's too big, halve it.
Angles: start at zero. Go through to 2 * pi. "Radians" is a big clue here...

Come on - start thinking for yourself, we can't micromanage your entire application, we can't even see your screen!

Ralf Meier 27-Dec-17 6:58am

@Abdul:
Perhaps you should look for examples which show how an analogue clock is coded. I suppose that your requirement matches to the movement of one of it's hands.
I'm sorry ... nut there is no way we can do that for you ... you must see by yourself what you need and how it behaves best ...

OriginalGriff 26-Dec-17 8:47am

It's basic maths and geometry, that you were taught by the time you were fourteen or so - probably earlier!

[no name] 28-Dec-17 9:34am

Sorry for all. I have now tried and understand the method . Thanks!

OriginalGriff 28-Dec-17 9:57am

You're welcome!

Nakhia_ind 26-Dec-17 9:12am

sir you can take shape controls from the tool box.
make them circular with fill colour.One keep in center and keep a lots of in circulars in a circular path with visible false.take the timer controles those no of circles in the circular path.set the timers time according to display circle and enable one after another timer.