HeatSensor.h

// SPDX-FileCopyrightText: 2019 teejaydub for Adafruit Industries
//
// SPDX-License-Identifier: MIT

/* Read the IR sensor and try to figure out where the heat is located. 

    Orientation: Looking into the sensor, the window is on the bottom of the silver package,
    and the Adafruit star is at the upper left.
    X goes from about -1.0 on the left, facing out of the sensor, to +1.0 on the right.
    Y goes roughly from -1.0 (less?) on the bottom to +1.0 on the top.
    The sensor is oriented with its text upside down for the moment.
    Magnitude is currently the maximum temperature of any pixel, in degrees C.
*/

#ifndef __HEAT_SENSOR_H
#define __HEAT_SENSOR_H

class HeatSensor {
public:
    // The current focus position, each from -1.0 .. +1.0.
    float x, y;

    // The current magnitude estimate, in degrees C.
    float magnitude;

    // Must be called once.
    void setup();

    // Reads the sensor and updates x, y, and magnitude.
    void find_focus();
};

#endif