Hi,

I have encountered a somewhat weird problem:

I have a lot of small boxes which follows along an interpolation of a motionPath. I want the boxes to follow the orientation of the motionPath. To do this I use the lookAt method on each geometry object to look at the next geometry object on the path.

[java]public void createLines(int nbSubSegments) {

int length = (spline.getControlPoints().size() - 1) * nbSubSegments + 1;

Geometry[] geoms = new Geometry[length];

Vector3f[] vectors = new Vector3f[length];

int i = 0;

int cptCP = 0;

for (Iterator<Vector3f> it = spline.getControlPoints().iterator(); it.hasNext() {

Vector3f vector3f = it.next();

Box b = new Box(vector3f, 0.2f, 0.2f, 0.2f);

Geometry geom = new Geometry(â€ślinesegmentâ€ť,b);

Material mat = new Material(assetManager, â€śCommon/MatDefs/Misc/Unshaded.j3mdâ€ť);

mat.setColor(â€śColorâ€ť,ColorRGBA.Magenta);

geom.setMaterial(mat);

rootNode.attachChild(geom);

geoms* = geom;
vectors*

*= vector3f; geom.setLocalTranslation(vector3f); i++; if (it.hasNext()) { for (int j = 1; j < nbSubSegments; j++) { Vector3f temp = new Vector3f(); spline.interpolate((float) j / nbSubSegments, cptCP, temp); Box c = new Box(temp, 0.2f, 0.2f, 0.2f); Geometry geomTemp = new Geometry(â€ślinesegmentâ€ť,c); geomTemp.setMaterial(mat); rootNode.attachChild(geomTemp); geoms*

*= geomTemp; vectors**= temp; i++; } } cptCP++; } for(int n = 0; n < i; n++){ if(n == 0){ geoms[n].lookAt(vectors[i-1], Vector3f.UNIT_Y); }else{ geoms[n].lookAt(vectors[n-1], Vector3f.UNIT_Y); } } }[/java] As you can see in the very last part of the code, this is where I try to change the orientation of each of the boxes. However, when I do this not only is the rotation of the boxes changed, their position is also changed! Here is the boxes without the last for-loop:*

*http://i.imgur.com/Bw3iv.png*

Here is the boxes WITH the last for-loop:

(Disregard the lone box)

http://i.imgur.com/j6lUV.png

Any idea what the hell is going on here? :sHere is the boxes WITH the last for-loop:

(Disregard the lone box)

http://i.imgur.com/j6lUV.png

Any idea what the hell is going on here? :s