message: fix computeInterUnitBonds
diff: @@ -15,6 +15,7 @@ import { SortedArray } from '../../../../../mol-data/int';
  import { Vec3, Mat4 } from '../../../../../mol-math/linear-algebra';
  import StructureElement from '../../element';
  import { StructConn } from '../../../../../mol-model-formats/structure/mmcif/bonds';
  +import { ElementIndex } from '../../../model/indexing';
  const MAX_RADIUS = 4;
  @@ -37,6 +38,14 @@ function addLink(indexA: number, indexB: number, order: number, flag: LinkType.F
  UniqueArray.add(state.bondedB, indexB, indexB);
  }
  +const tmpDistVecA = Vec3()
  +const tmpDistVecB = Vec3()
  +function getDistance(unitA: Unit.Atomic, indexA: ElementIndex, unitB: Unit.Atomic, indexB: ElementIndex) {
  + unitA.conformation.position(indexA, tmpDistVecA)
  + unitB.conformation.position(indexB, tmpDistVecB)
  + return Vec3.distance(tmpDistVecA, tmpDistVecB)
  +}
  +
  const _imageTransform = Mat4.zero();
  function findPairLinks(unitA: Unit.Atomic, unitB: Unit.Atomic, props: LinkComputationProps, map: Map<number, InterUnitBonds.UnitPairBonds[]>) {
  @@ -72,11 +81,11 @@ function findPairLinks(unitA: Unit.Atomic, unitB: Unit.Atomic, props: LinkComput
  if (structConnEntries && structConnEntries.length) {
  let added = false;
  for (const se of structConnEntries) {
  - if (se.distance > MAX_RADIUS) continue;
  -
  for (const p of se.partners) {
  const _bI = SortedArray.indexOf(unitB.elements, p.atomIndex);
  if (_bI < 0) continue;
  + // check if the bond is within MAX_RADIUS for this pair of units
  + if (getDistance(unitA, aI, unitB, p.atomIndex) > MAX_RADIUS) continue;
  addLink(_aI, _bI, se.order, se.flags, state);
  bondCount++;
  added = true;
  