Databases
StackOverflow2013
Postsdbo
POHow to move a kinect skeleton to another position
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to move a kinect skeleton to another position
    primarykey
    data
    text
    <p>I am working on a extension method to move one skeleton to a desired position in the kinect field os view.</p> <p>My code receives a skeleton to be moved and the destiny position, i calculate the distance between the received skeleton hip center and the destiny position to find <code>how much to move</code>, then a iterate in the joint applying this factor. My code, actualy looks like this.</p> <pre><code>public static Skeleton MoveTo(this Skeleton skToBeMoved, Vector4 destiny) { Joint newJoint = new Joint(); ///Based on the HipCenter (i dont know if it is reliable, seems it is.) float howMuchMoveToX = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.X - destiny.X); float howMuchMoveToY = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Y - destiny.Y); float howMuchMoveToZ = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Z - destiny.Z); float howMuchToMultiply = 1; // Iterate in the 20 Joints foreach (JointType item in Enum.GetValues(typeof(JointType))) { newJoint = skToBeMoved.Joints[item]; // This adjust, try to keeps the skToBeMoved in the desired position if (newJoint.Position.X &lt; 0) howMuchToMultiply = 1; // if the point is in a negative position, carry it to a "more positive" position else howMuchToMultiply = -1; // if the point is in a positive position, carry it to a "more negative" position // applying the new values to the joint SkeletonPoint pos = new SkeletonPoint() { X = newJoint.Position.X + (howMuchMoveToX * howMuchToMultiply), Y = newJoint.Position.Y, // * (float)whatToMultiplyY, Z = newJoint.Position.Z, // * (float)whatToMultiplyZ }; newJoint.Position = pos; skToBeMoved.Joints[item] = newJoint; //if (skToBeMoved.Joints[JointType.HipCenter].Position.X &lt; 0) //{ // if (item == JointType.HandLeft) // { // if (skToBeMoved.Joints[item].Position.X &gt; 0) // { // } // } //} } return skToBeMoved; } </code></pre> <p>Actualy, only X position is considered.</p> <p>Now, THE PROBLEM:</p> <p>If i stand in a negative position, and move my hand to a positive position, a have a strange behavior, look this image</p> <p><img src="https://i.stack.imgur.com/n8H2f.gif" alt="enter image description here"> </p> <p>To reproduce this behaviour you could use this code</p> <pre><code>using (SkeletonFrame frame = e.OpenSkeletonFrame()) { if (frame == null) return new Skeleton(); if (skeletons == null || skeletons.Length != frame.SkeletonArrayLength) { skeletons = new Skeleton[frame.SkeletonArrayLength]; } frame.CopySkeletonDataTo(skeletons); Skeleton skeletonToTest = skeletons.Where(s =&gt; s.TrackingState == SkeletonTrackingState.Tracked).FirstOrDefault(); Vector4 newPosition = new Vector4(); newPosition.X = -0.03412333f; newPosition.Y = 0.0407479f; newPosition.Z = 1.927342f; newPosition.W = 0; // ignored skeletonToTest.MoveTo(newPosition); } </code></pre> <p>I know, this is simple math, but i cant figure it out why this is happen. Any help will be apreciated.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USEwerton
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to move a kinect skeleton to another position
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POHow to move a kinect skeleton to another position
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POHow to move a kinect skeleton to another position
      1. This table or related slice is empty.
      1. VTUpMod
    1. COit should be a matter of adding the new position translation vector to each joint position in the skeleton and nothing more
      singulars
      1. POHow to move a kinect skeleton to another position
      1. USGeorge Profenza
    2. CO@George Profenza Yes, it is! Whats your code modifications to solve it?
      singulars
      1. POHow to move a kinect skeleton to another position
      1. USEwerton
    3. COGlad you sorted out, I was out when you replied. Still, from my point of view, if `Vector4 destiny` is a relative position to translate towards it's just a matter doing doing someting like `currentPositionVector += translationVector`(in pseudo, as in, `currentJoint.x += newPos.x`,same for y and z). If `destiny is absolute`, you would use the difference between the current position and the new position. The part that puzzles me in your approach is why you flip (multiply by -1) the difference vector. Also, when you get the difference vector, you seem to only add the to the X component...
      singulars
      1. POHow to move a kinect skeleton to another position
      1. USGeorge Profenza
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload