[About GetValidity() in SRanipal Unreal SDK]

@Andy.YC_Wang

Sorry for the late reply.
Thank you very much for your answer.

Regards,
Assc

[About GetValidity() in SRanipal Unreal SDK]

I would like to make sure about GetValidity() in SRanipal Unreal SDK.
(I'm using Unreal Engine 4.22.3, SRanipal_Runtime 1.1.2.0, SRanipalSDK 1.1.0.1.)

I have checked the source code concerned to GetValidity() in SDK (see TEXT1 below) and seemed to discover that GetValidity() is incorrect in a part of the code.
If the validity as an argument with GetValidity() is SINGLE_EYE_DATA_GAZE_ORIGIN_VALIDITY and its flug also be been on in an eye_data_validata_bit_mask, the function should return the TRUE, however, it returns FALSE.
Because, SINGLE_EYE_DATA_GAZE_ORIGIN_VALIDITY defines 0 in the SingleEyeDataValidity(TEXT1) as enum.
Therefore, the source code should be corrected as GetValidity() in TEXT2, or SINGLE_EYE_DATA_GAZE_ORIGIN_VALIDITY should be not 0, how is this?

-TEXT1(This is SRanipal_Eyes_Enums.h)-

enum SingleEyeDataValidity {
        SINGLE_EYE_DATA_GAZE_ORIGIN_VALIDITY,
        SINGLE_EYE_DATA_GAZE_DIRECTION_VALIDITY,
        SINGLE_EYE_DATA_PUPIL_DIAMETER_VALIDITY,
        SINGLE_EYE_DATA_EYE_OPENNESS_VALIDITY,
        SINGLE_EYE_DATA_PUPIL_POSITION_IN_SENSOR_AREA_VALIDITY
};

typedef struct SingleEyeData
{
        /** The bits containing all validity for this frame.*/
        uint64_t eye_data_validata_bit_mask;

        bool GetValidity(SingleEyeDataValidity validity) {
                 return (eye_data_validata_bit_mask & (uint64)validity) > 0;
        }
}SingleEyeData;

-TEXT2-

bool GetValidity(SingleEyeDataValidity validity) {
        return (eye_data_validata_bit_mask & ((uint64)1 << (uint64)validity)) > 0;
}

Thank you.

 

 

@Daniel_Y @zzy

 

[Question about EyeData]

@VIVE_Jason_Lu

Sorry for the late reply. Thank you for your answer.

I woud like to make sure whether I understand correctly:
I would like to know which point I am looking at so I intend to require an answer for the point calculated, using both the data `gaze_origin_mm` and data `gaze_direction_normalized`.
Is my think correct or Is there other way?

Thank you.

[Question about EyeData]

Hello.

I want to calculate the gaze point in Unreal Engine. I have some questions about EyeData.
(I'm using Unreal Engine 4.22.3, SRanipal_Runtime 1.1.2.0, SRanipalSDK 1.1.0.1)

1. Shouldn't gaze_origin_mm be used to calculate the gaze point? Why EyeFocusSample doesn't use gaze_origin_mm?

2. Is eye_data_validata_bit_mask a value that is set a bit corresponding to SingleEyeDataValidity? For example, if only gaze_origin_mm and gaze_direction_normalized are valid, eye_data_validata_bit_mask is ((1<<SINGLE_EYE_DATA_GAZE_ORIGIN_VALIDITY) | (1<<SINGLE_EYE_DATA_GAZE_DIRECTION_VALIDITY))? (SingleEyeData::GetValidity() seems to be wrong.)

3. The convergence_distance_validity seems to be always FALSE. Is convergence_distance_mm supported now?

Thank you.

@Corvus @Daniel_Y