using System;

using MathNet.Numerics.LinearAlgebra.Single;

namespace bbiwarg
{
    public enum FingerStatus
    {
        Inactive,
        Detected,
        Tracked
    }

    public enum HandSide
    {
        Unknown,
        Left,
        Right
    }

    /*
     * Interface get data from a camera or a video file.
     * Completely independent of iisu.
     */
    interface IVideoDataSource
    {
        /*
         * Initializes the data source.
         */
        void init();

        /*
         * Starts the recording of data.
         */
        void start();
        /*
         * Stops the recording of data.
         */
        void stop();

        /*
         * Updates the data for the current frame.
         * Needs to be called before any method to read data.
         */
        void updateFrame();
        /*
         * Lets the data source process the next frame.
         */
        void releaseFrame();

        /*
         * Returns true iff new data is generated.
         * (e.g camera is running or video hasn't ended)
         */
        bool isActive();
        int getFrameRate();
        DepthImage getDepthImage();

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