how does the interpolation of the color ramp node in cycle affect the behaviour of the color ramp. During modelling the interpolation meant the shape of the curve, but while using node it must be something different........... How would this affect the values physically and technically(i.e. how would it carry out internally and how would blender interpret the input value of the color ramp)?
An easy way to visualize this is to add a plane with a displacement modifier with a Blend texture and Colors > Ramp selected. Start by adding and subdividing a plane:
You can add a subdivision-surface modifier as well for added detail. Now add a Displace modifier, and click
New to make a new texture. Go to the texture panel and select Blend:
Now you can edit the waypoints and the interpolation types as you wish and view their results in real time. This will really help you see how the colors are mixed using a color-ramp.
To visualize Cycles
Add a plane, unwrap it and add a gradient texture to an emission shader: