How to set data from a given model

I have read about GMM (Gaussian Mixture Model) the mean idea is to generate a model from an unknown distribution. as below

I want to have the opposite of this method, I already have the model and a want to get distribution data. any help I'll be glad.

[Kaushik Lakshminarasimhan]

Do you mean you want to know how to randomly sample from a distribution? What is your model/distribution?

[azdoud youssef]

yes, like Epanechnikov, triangle or Gaussian