public void computeWorldMatrix() {
        // Force a local update of the geometry's transform
        checkDoTransformUpdate();

        // Compute the cached world matrix
        cachedWorldMat.loadIdentity();
        if (ignoreTransform) {
            return;
        }
        cachedWorldMat.setRotationQuaternion(worldTransform.getRotation());
        cachedWorldMat.setTranslation(worldTransform.getTranslation());

        TempVars vars = TempVars.get();
        Matrix4f scaleMat = vars.tempMat4;
        scaleMat.loadIdentity();
        scaleMat.scale(worldTransform.getScale());
        cachedWorldMat.multLocal(scaleMat);
        vars.release();
    }
Recomputes the matrix returned by {@link Geometry#getWorldMatrix() }.
This will require a localized transform update for this geometry.
jme3-core/src/main/java/com/jme3/scene/Geometry.java