Display and scroll over big layout

would be very grateful if anyone can advice how to solve the problem.

I got to draw a large and rather complicated structure (railway track layout). In order to have a smooth scrolling I wanted to draw the layout into a bitmap and then just to copy necessary part into the screen canvas in onDraw method.

The problem is that the layout is much larger than 2048x2048 (max allowed texture size on my Asus Prime) and I'm getting 'Bitmap too large to be uploaded into a texture'.
And this's even without zoom.

The layout is just a set of 2d geometrical primitives so maybe it's possible to work on geometrical rather than bitmap level, but how to implement smooth scroll and zoom then ?

What are common ways of solving this issue ?

Thanks in advance.

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