How to make a ColorRamp repeat like a Texture node?

Question

The Image Texture node has setting (selected by default) to Repeat. How can I get that effect on a ColorRamp?

The node setup below illustrates how the ColorRamp node behaves differently from the Image Texture node. Slide the MixRGB node to 0 to see the texture, or 1 to see the gradient. Once you have seen both - gradually drag the number in the Value node to see how this affects the texture and the gradient differently.

For the texture, a value of 1 gives the same result as a value of 5. A value of -1.75 gives the same result as a value of 3.25 - that is to say anything higher that 1.0 or lower than 0.0 wraps back around.

For the gradient of the ColorRamp, dragging the Value slider in either direction causes the color at the edge (magenta in this case) to stretch.

Is there a way to use Math nodes or something to create a repeating wrap for a ColorRamp gradient like the Image Texture node can produce?

_{(And yes, it has occurred to me that I can prepare a texture of a gradient and use that, but if the ColorRamp node can be used, preparing such images will not be necessary.)}

Answer 1

You can use a Math node set to Wrap (as you suggested). You might need to use one of the lastest versions in order to see it, it has been added later than V.2.80 if memory serves. According to the docs :

Outputs a value between Min and Max based on the absolute difference between the input value and the nearest integer multiple of Max less than the value.

Set the Max to 1 and Min to 0.

Alternatively, you can Wrap the whole 3D space before separating the axes with a Vector Math node set to Wrap.

Answer 2

Vector Math -> Modulo with divisor values of 1.0 should give you what you want.

You can Separate XYZ into whatever axis you want, or manipulate further with Mapping.