OpenSpace/src/interaction/joystickinputstate.cpp

/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2021                                                               *
 *                                                                                       *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
 * software and associated documentation files (the "Software"), to deal in the Software *
 * without restriction, including without limitation the rights to use, copy, modify,    *
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
 * permit persons to whom the Software is furnished to do so, subject to the following   *
 * conditions:                                                                           *
 *                                                                                       *
 * The above copyright notice and this permission notice shall be included in all copies *
 * or substantial portions of the Software.                                              *
 *                                                                                       *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
 ****************************************************************************************/

#include <openspace/interaction/joystickinputstate.h>

#include <ghoul/glm.h>
#include <ghoul/misc/invariants.h>
#include <ghoul/misc/stringconversion.h>
#include <algorithm>
#include <map>
#include <numeric>

namespace openspace::interaction {

float JoystickInputStates::axis(int axis) const {
    ghoul_precondition(axis >= 0, "axis must be 0 or positive");

    float res = std::accumulate(
        begin(),
        end(),
        0.f,
        [axis](float value, const JoystickInputState& state) {
            if (state.isConnected) {
                value += state.axes[axis];
            }
            return value;
        }
    );

    // If multiple joysticks are connected, we might get values outside the -1,1 range by
    // summing them up
    glm::clamp(res, -1.f, 1.f);
    return res;
}

bool JoystickInputStates::button(int button, JoystickAction action) const {
    ghoul_precondition(button >= 0, "button must be 0 or positive");

    bool res = std::any_of(
        begin(),
        end(),
        [button, action](const JoystickInputState& state) {
            return state.isConnected ? (state.buttons[button] == action) : false;
        }
    );
    return res;
}

} // namespace openspace::interaction