relerp.md

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relerp

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Given an interpolated value in the old range (oldfrom, oldto), returns its equivalent value in the new range (newfrom, newto).

Arguments

Argument	Type	Usage	Description
oldfrom	Real	Required	The old range's first value.
oldto	Real	Required	The old range's second value.
oldvalue	Real	Required	The value to re-interpolate.
newfrom	Real	Required	The new range's first value.
newto	Real	Required	The new range's second value.

Returns

Real

Example

The following code calculates the rating (from 1 to 6) based on the mouse position relative to the slider.

var _slider_left = x;
var _slider_right = x + sprite_width;
var _min_rating = 1;
var _max_rating = 6;
var _rating_raw = relerp(_slider_left, _slider_right, mouse_x, _min_rating, _max_rating);
global.current_rating = clamp(round(_rating_raw), _min_rating, _max_rating);

Update history

• 23.4.0 - Created a function to convert a value in one range to a corresponding value in another range.