Question How to Cut any GameObject in runtime with mouse ?

I want to cut gameobject at runtime into multiple shapes, i made a R&D on unity Physics but i couldn't find any example related to cutting a object into into different shapes, please provide a link or tell me some way using which i can cut object into different shapes. i want to do this via simple script. i don't want to use assets from store or not any addons. is it possible or not ????
please me to out off this....
Thanking You

 

Is it possible, of course it is.

What do you mean exactly with cut into shapes?
Just slice objects? Or cutout shapes (like a star) from a plane? Or something else?

 

slice objects

 

Here is an example of a manual solution:
https://github.com/JustinCragg/MeshSlicing/blob/master/Scripts/Slicer.cs

https://github.com/DavidArayan/ezy-slice

 

Dear Sir, I tried my best but i can't understand what code going in this script is any videos or other tutorials for this. please help me..

 

What doesn't work exactly?
You say you want to do it yourself, without assets, but if you cannot understand it maybe try an asset