/*
 *  keyvar.cpp
 
 generalised cushioned keyboard controller 
 */

#include "keyVar.h"

void keyVar::set(char _keyInc,char _keyDec,float _val,float _speed,float _accel,float _accelTime){
	keyInc=_keyInc;
	keyDec=_keyDec;
	val=_val; //initial value
	speed=_speed;
	accel=_accel;
	accelTime=_accelTime;
	state=0;
	timePressed=timeCalc=0;
}
void keyVar::keyPressed(char _key){
	//need to deal with key repeat: OSX anyway
	if (_key==keyInc&&state!=1) {
		state=1;
		timePressed=timeCalc=ofGetElapsedTimef();
		printf("pressed %i\n",_key);
	}
	if (_key==keyDec&&state!=-1) {
		state=-1;
		timePressed=timeCalc=ofGetElapsedTimef();
		printf("pressed %i\n",_key);
	}
}
void keyVar::keyReleased(char _key){
	if (_key==keyInc&&state==1) {
		state=0;
		printf("released %i\n",_key);
	}
	if (_key==keyDec&&state==-1) {
		state=0;
		printf("released %i\n",_key);
	}
}
float keyVar::getVal(){
	float segment = min(1.0f,(ofGetElapsedTimef()-timePressed)/accelTime);
	if (state) val+=pow(segment,accel)*(ofGetElapsedTimef()-timeCalc)*speed*state;
	timeCalc=ofGetElapsedTimef();
	return val;
}