stevenfour/OculusSdk · Datasets at Hugging Face

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// p0 is the cube's transform and p2 the left hand's index tip transform
// These are the two edges of the line connecting the cube to the left hand index tip
p0 = transform;
p2 = handIndexTipTransform;

// This is a somewhat random point between the cube and the index tip
// Need to reference as the point that "bends" the curve
p1 = sceneCamera.transform;
p1.position += sceneCamera.transform.forward * 0.8f;

// Draw the line that connects the cube to the user's left index tip and bend it at p1
DrawCurve(p0.position, p1.position, p2.position);
}
// If the user is not pinching
else
{
// Don't display the line at all
line.enabled = false;
}
}

}

void DrawCurve(Vector3 point_0, Vector3 point_1, Vector3 point_2)
/***********************************************************************************
# Helper function that draws a curve between point_0 and point_2, bending at point_1.
# Gradually draws a line as Quadratic Bézier Curve that consists of 200 segments.
#
# Bézier curve draws a path as function B(t), given three points P0, P1, and P2.
# B, P0, P1, P2 are all Vector3 and represent positions.
#
# B = (1 - t)^2 * P0 + 2 * (1-t) * t * P1 + t^2 * P2
#
# t is 0 <= t <= 1 representing size / portion of line when moving to the next segment.
# For example, if t = 0.5f, B(t) is halfway from point P0 to P2.
***********************************************************************************/
{
// Set the number of segments to 200
line.positionCount = 200;
Vector3 B = new Vector3(0, 0, 0);
float t = 0f;

// Draw segments
for (int i = 0; i < line.positionCount; i++)
{
// Move to next segment
t += 0.005f;

B = (1 - t) * (1 - t) * point_0 + 2 * (1 - t) * t * point_1 + t * t * point_2;
line.SetPosition(i, B);
}
}

void pinchCube()
// Places and rotates cube smoothly next to user's left hand
{
targetPosition = leftHand.transform.position - leftHand.transform.forward * 0.4f;
targetRotation = Quaternion.LookRotation(transform.position - leftHand.transform.position);

transform.position = Vector3.Lerp(transform.position, targetPosition, step);
transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, step);
}
}Use Wide Motion Mode
Unity

All-In-One VR

Quest

The platform for which this article is written (Unity) does not match your preferred platform (Nativa).
Haz clic aquí para ver la página del índice de la documentación para tu plataforma de preferencia.

Wide Motion Mode (WMM) allows you to track hands and display plausible hand poses even when the hands are outside the headset’s field of view, improving social presence and wide motion tracking. This is achieved by running Inside Out Body Tracking (IOBT) under the hood and using the estimated hand position when hand tracking is lost.

Benefits of WMM

Improved social and self presence by providing plausible hand poses even when your hands are outside your FOV.
More reliable wide motion interactions (arm swings, backpacks, throws, etc.)
Reduced gesture and interaction failures due to tracking loss when the user turns their head.
Arm swing based locomotion, where users use their arms to move around the game, such as Echo VR.
Known limitations

While the system will always provide a hand pose, it will not be accurate when hand tracking is lost- the system uses body tracking data for approximate position and last hand pose as the pose itself.
You may also see a slight regression in position accuracy due to smoothing when transitioning from body tracking based hand pose to hand tracking based hand pose as hand tracking is reestablished.
WMM can be less robust in extremely low light. In case of low light conditions, the system will revert to standard hand tracking.
Compatibility

Hardware compatibility
Supported devices: Quest 3 and all future devices.
Software compatibility
Unity 2021 LTS and above
Integration SDK version 62 and above
Feature compatibility
IOBT/ WMM will not run when passthrough and full body (FBS) are running along with FMM or Multimodal.
When using Inside Out Body Tracking, the hands pose exposed via MSDK already includes WMM like fused hands. If you plan to use MSDK and consume hands from ISDK/ hands API, turn on WMM to reduce hand pose mismatch between MSDK and hands API.
Setup

This feature will be integrated with the version of the Oculus Integration SDK for Unity provided to you. To enable WMM, either use the editor or the provided C# scripts. A simple WMM sample scene is in Scenes\OculusInternal\HandTrackingWideMotionMode. In the scene, you can use a simple UI to turn the feature on and off.

// p0 is the cube's transform and p2 the left hand's index tip transform

// These are the two edges of the line connecting the cube to the left hand index tip

p0 = transform;

p2 = handIndexTipTransform;

// This is a somewhat random point between the cube and the index tip

// Need to reference as the point that "bends" the curve

p1 = sceneCamera.transform;

p1.position += sceneCamera.transform.forward * 0.8f;

// Draw the line that connects the cube to the user's left index tip and bend it at p1

DrawCurve(p0.position, p1.position, p2.position);

}

// If the user is not pinching

else

{

// Don't display the line at all

line.enabled = false;

}

void DrawCurve(Vector3 point_0, Vector3 point_1, Vector3 point_2)

/***********************************************************************************

# Helper function that draws a curve between point_0 and point_2, bending at point_1.

# Gradually draws a line as Quadratic Bézier Curve that consists of 200 segments.

#

# Bézier curve draws a path as function B(t), given three points P0, P1, and P2.

# B, P0, P1, P2 are all Vector3 and represent positions.

#

# B = (1 - t)^2 * P0 + 2 * (1-t) * t * P1 + t^2 * P2

#

# t is 0 <= t <= 1 representing size / portion of line when moving to the next segment.

# For example, if t = 0.5f, B(t) is halfway from point P0 to P2.

***********************************************************************************/

{

// Set the number of segments to 200

line.positionCount = 200;

Vector3 B = new Vector3(0, 0, 0);

float t = 0f;

// Draw segments

for (int i = 0; i < line.positionCount; i++)

{

// Move to next segment

t += 0.005f;

B = (1 - t) * (1 - t) * point_0 + 2 * (1 - t) * t * point_1 + t * t * point_2;

line.SetPosition(i, B);

}

void pinchCube()

// Places and rotates cube smoothly next to user's left hand

{

targetPosition = leftHand.transform.position - leftHand.transform.forward * 0.4f;

targetRotation = Quaternion.LookRotation(transform.position - leftHand.transform.position);

transform.position = Vector3.Lerp(transform.position, targetPosition, step);

transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, step);

}

}Use Wide Motion Mode

Unity

All-In-One VR

Quest

The platform for which this article is written (Unity) does not match your preferred platform (Nativa).

Haz clic aquí para ver la página del índice de la documentación para tu plataforma de preferencia.

Wide Motion Mode (WMM) allows you to track hands and display plausible hand poses even when the hands are outside the headset’s field of view, improving social presence and wide motion tracking. This is achieved by running Inside Out Body Tracking (IOBT) under the hood and using the estimated hand position when hand tracking is lost.

Benefits of WMM

Improved social and self presence by providing plausible hand poses even when your hands are outside your FOV.

More reliable wide motion interactions (arm swings, backpacks, throws, etc.)

Reduced gesture and interaction failures due to tracking loss when the user turns their head.

Arm swing based locomotion, where users use their arms to move around the game, such as Echo VR.

Known limitations

While the system will always provide a hand pose, it will not be accurate when hand tracking is lost- the system uses body tracking data for approximate position and last hand pose as the pose itself.

You may also see a slight regression in position accuracy due to smoothing when transitioning from body tracking based hand pose to hand tracking based hand pose as hand tracking is reestablished.

WMM can be less robust in extremely low light. In case of low light conditions, the system will revert to standard hand tracking.

Compatibility

Hardware compatibility

Supported devices: Quest 3 and all future devices.

Software compatibility

Unity 2021 LTS and above

Integration SDK version 62 and above

Feature compatibility

IOBT/ WMM will not run when passthrough and full body (FBS) are running along with FMM or Multimodal.

When using Inside Out Body Tracking, the hands pose exposed via MSDK already includes WMM like fused hands. If you plan to use MSDK and consume hands from ISDK/ hands API, turn on WMM to reduce hand pose mismatch between MSDK and hands API.

Setup

This feature will be integrated with the version of the Oculus Integration SDK for Unity provided to you. To enable WMM, either use the editor or the provided C# scripts. A simple WMM sample scene is in Scenes\OculusInternal\HandTrackingWideMotionMode. In the scene, you can use a simple UI to turn the feature on and off.