using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MathNet.Numerics.LinearAlgebra.Single;

namespace bbiwarg.InputProviders
{
    public enum DetectionStatus
    {
        Inactive,
        Detected,
        Tracked
    }

    public enum HandSide
    {
        Unknown,
        Left,
        Right
    }

    interface IInputProvider
    {
        void init();
        void start();
        void stop();
        void updateFrame();
        void releaseFrame();

        float getFrameRate();
        float getHFOV();
        float getVFOV();
        bool isActive();

        InputFrame getInputFrame();

        /*
         * all handIndices have to be 1 or 2
         */
        bool isHandOpen(uint handIndex);
        Vector getPalmPosition3D(uint handIndex);
        Vector getPalmPosition2D(uint handIndex);
        Vector getTipPosition3D(uint handIndex);
        Vector getForearmPosition3D(uint handIndex);
        Vector getPalmNormal3D(uint handIndex);
        DetectionStatus[] getFingerStatus(uint handIndex);
        DetectionStatus getHandStatus(uint handIndex);
        Vector[] getFingerTipPositions3D(uint handIndex);
        Vector[] getFingerTipPositions2D(uint handIndex);
        HandSide getHandSide(uint handIndex);
    }
}