File content as of revision 9:6205ef056c8a:

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/*
 * $Date: 2015-11-10 11:21:53 +0100 (Tue, 10 Nov 2015) $
 * $Revision: 2612 $
 */

#include "tof_gestures.h"
#include "tof_gestures_DIRSWIPE_1.h"

int tof_gestures_initDIRSWIPE_1(int32_t rangeThreshold_mm, int minSwipeDuration, int maxSwipeDuration, bool handMustCoverBoth, Gesture_DIRSWIPE_1_Data_t *data){
    int status=0;
    // Init left and right motion
    status |= tof_initMotion(rangeThreshold_mm, &(data->motionDetectorLeft));
    status |= tof_initMotion(rangeThreshold_mm, &(data->motionDetectorRight));
    data->minSwipeDuration = minSwipeDuration;
    data->maxSwipeDuration = maxSwipeDuration;
    data->handMustCoverBoth = handMustCoverBoth;
    data->state = GESTURES_DIRSWIPE_1_START;
    data->timestamp = 0;
    return status;
}

int tof_gestures_detectDIRSWIPE_1(int32_t left_range_mm, int32_t right_range_mm, Gesture_DIRSWIPE_1_Data_t *data){
    int return_code = GESTURES_NULL;
    int r_motion_code, l_motion_code;
    int timestamp = GET_TIME_STAMP();
    int duration=0;
    
    // Get left and right motion
    l_motion_code = tof_getMotion(left_range_mm, &(data->motionDetectorLeft));
    r_motion_code = tof_getMotion(right_range_mm, &(data->motionDetectorRight));
    
    TOF_GESTURES_DEBUG(DIRSWIPE_1,"lmotion=%d, rmotion=%d", l_motion_code, r_motion_code);
    
    switch(data->state){
        case GESTURES_DIRSWIPE_1_START:
        	if((!data->handMustCoverBoth && r_motion_code == GESTURES_MOTION_RAISE_UP) || (data->handMustCoverBoth && r_motion_code == GESTURES_MOTION_RAISE_UP && l_motion_code == GESTURES_MOTION_DOWN_STATE)){
                if(data->motionDetectorRight.duration > data->minSwipeDuration){
                    data->gesture_start_from_right = true;
                    data->state = GESTURES_DIRSWIPE_1_END;
                    data->timestamp = timestamp;
                    TOF_GESTURES_DEBUG(DIRSWIPE_1,"Start right to left (%d ms)",data->motionDetectorRight.duration);
                }else{
                    return_code = GESTURES_DISCARDED_TOO_FAST;
                }
            }else if((!data->handMustCoverBoth && l_motion_code == GESTURES_MOTION_RAISE_UP) || (data->handMustCoverBoth && r_motion_code == GESTURES_MOTION_DOWN_STATE && l_motion_code == GESTURES_MOTION_RAISE_UP)){
                if(data->motionDetectorRight.duration > data->minSwipeDuration){
                    data->gesture_start_from_right = false;
                    data->state = GESTURES_DIRSWIPE_1_END;
                    data->timestamp = timestamp;
                    TOF_GESTURES_DEBUG(DIRSWIPE_1,"Start left to right(%d ms)",data->motionDetectorRight.duration);
                }else{
                    return_code = GESTURES_DISCARDED_TOO_FAST;
                }
            }   
            break;
        case GESTURES_DIRSWIPE_1_END:
            duration = timestamp - data->timestamp;
            if(duration > data->maxSwipeDuration){
                // Gesture is too long : discard it
                data->state = GESTURES_DIRSWIPE_1_START;
                TOF_GESTURES_DEBUG(DIRSWIPE_1,"Too slow");
                return_code = GESTURES_DISCARDED_TOO_SLOW;
            }else if ((data->gesture_start_from_right && l_motion_code == GESTURES_MOTION_RAISE_UP) || (!data->gesture_start_from_right && r_motion_code == GESTURES_MOTION_RAISE_UP)){
                // Gesture detected
                data->state = GESTURES_DIRSWIPE_1_START;
                return_code = (data->gesture_start_from_right) ? GESTURES_SWIPE_RIGHT_LEFT : GESTURES_SWIPE_LEFT_RIGHT;
                TOF_GESTURES_DEBUG(DIRSWIPE_1,"DETECTED");
            }else{
                // Waiting...
                TOF_GESTURES_DEBUG(DIRSWIPE_1,"Waiting...");
                return_code = GESTURES_STARTED;
            }             
            break;
    }
    return return_code;
}