lower threshold for coarse boundary helper

src/mol-math/geometry/boundary.ts

@@ -14,7 +14,7 @@ import { Box3D, Sphere3D } from '../geometry';
 const boundaryHelperCoarse = new BoundaryHelper('14');
 const boundaryHelperFine = new BoundaryHelper('98');
 function getBoundaryHelper(count: number) {
-    return count > 100_000 ? boundaryHelperCoarse : boundaryHelperFine;
+    return count > 10_000 ? boundaryHelperCoarse : boundaryHelperFine;
 }
 
 export type Boundary = { readonly box: Box3D, readonly sphere: Sphere3D }
@@ -22,16 +22,17 @@ export type Boundary = { readonly box: Box3D, readonly sphere: Sphere3D }
 export function getBoundary(data: PositionData): Boundary {
     const { x, y, z, radius, indices } = data;
     const p = Vec3();
+    const n = OrderedSet.size(indices);
 
-    const boundaryHelper = getBoundaryHelper(OrderedSet.size(indices));
+    const boundaryHelper = getBoundaryHelper(n);
     boundaryHelper.reset();
-    for (let t = 0, _t = OrderedSet.size(indices); t < _t; t++) {
+    for (let t = 0; t < n; t++) {
         const i = OrderedSet.getAt(indices, t);
         Vec3.set(p, x[i], y[i], z[i]);
         boundaryHelper.includePositionRadius(p, (radius && radius[i]) || 0);
     }
     boundaryHelper.finishedIncludeStep();
-    for (let t = 0, _t = OrderedSet.size(indices); t < _t; t++) {
+    for (let t = 0; t < n; t++) {
         const i = OrderedSet.getAt(indices, t);
         Vec3.set(p, x[i], y[i], z[i]);
         boundaryHelper.radiusPositionRadius(p, (radius && radius[i]) || 0);
@@ -39,9 +40,9 @@ export function getBoundary(data: PositionData): Boundary {
 
     const sphere = boundaryHelper.getSphere();
 
-    if (!radius && OrderedSet.size(indices) <= 98) {
+    if (!radius && Sphere3D.hasExtrema(sphere) && n <= sphere.extrema.length) {
         const extrema: Vec3[] = [];
-        for (let t = 0, _t = OrderedSet.size(indices); t < _t; t++) {
+        for (let t = 0; t < n; t++) {
             const i = OrderedSet.getAt(indices, t);
             extrema.push(Vec3.create(x[i], y[i], z[i]));
         }