/*******************************************************************************
* Breakout Cave Survey Visualizer
*
* Copyright (C) 2014 James Edwards
*
* jedwards8 at fastmail dot fm
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*******************************************************************************/
package org.andork.func;
public class LinearFloatBimapper implements Bimapper<Float, Float> {
// out = m * in + b;
public float m;
public float b;
public LinearFloatBimapper() {
m = 1f;
b = 0f;
}
public LinearFloatBimapper(float m, float b) {
this.m = m;
this.b = b;
}
public LinearFloatBimapper(float in0, float out0, float in1, float out1) {
set(in0, out0, in1, out1);
}
@Override
public Float map(Float in) {
return in == null ? null : m * in + b;
}
public LinearFloatBimapper set(float in0, float out0, float in1, float out1) {
m = (out1 - out0) / (in1 - in0);
b = in0 - out0 / m;
return this;
}
@Override
public Float unmap(Float out) {
return out == null ? null : (out - b) / m;
}
}