andrewm@0: /*
andrewm@0:  * Utilities.cpp
andrewm@0:  *
andrewm@0:  *  Created on: Oct 27, 2014
andrewm@0:  *      Author: parallels
andrewm@0:  */
andrewm@0: 
andrewm@0: #include "../include/Utilities.h"
andrewm@0: 
andrewm@0: // map()
andrewm@0: //
andrewm@0: // Scale an input value from one range to another. Works like its Wiring language equivalent.
andrewm@0: // x is the value to scale; in_min and in_max are the input range; out_min and out_max
andrewm@0: // are the output range.
andrewm@0: 
andrewm@0: float map(float x, float in_min, float in_max, float out_min, float out_max)
andrewm@0: {
andrewm@0: 	return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
andrewm@0: }
andrewm@0: 
andrewm@0: // constrain()
andrewm@0: //
andrewm@0: // Clips an input value to be between two end points
andrewm@0: // x is the value to constrain; min_val and max_val are the range
andrewm@0: 
andrewm@0: float constrain(float x, float min_val, float max_val)
andrewm@0: {
andrewm@0: 	if(x < min_val) return min_val;
andrewm@0: 	if(x > max_val) return max_val;
andrewm@0: 	return x;
andrewm@0: }