From 40b7fe7c6e211d9f09e9018d7a44ee8143cd31b5 Mon Sep 17 00:00:00 2001
From: Alexander Rose <alex.rose@rcsb.org>
Date: Mon, 22 Oct 2018 15:55:54 -0700
Subject: [PATCH] checkForDuplicateVertices mesh helper method
---
src/mol-geo/geometry/mesh/mesh.ts | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/src/mol-geo/geometry/mesh/mesh.ts b/src/mol-geo/geometry/mesh/mesh.ts
index e87de9bf2..ad4cec0ba 100644
--- a/src/mol-geo/geometry/mesh/mesh.ts
+++ b/src/mol-geo/geometry/mesh/mesh.ts
@@ -103,6 +103,28 @@ export namespace Mesh {
mesh.normalsComputed = true;
}
+ export function checkForDuplicateVertices(mesh: Mesh, fractionDigits = 3) {
+ const v = mesh.vertexBuffer.ref.value
+
+ const map = new Map<string, number>()
+ const hash = (v: Vec3, d: number) => `${v[0].toFixed(d)}|${v[1].toFixed(d)}|${v[2].toFixed(d)}`
+ let duplicates = 0
+
+ const a = Vec3.zero()
+ for (let i = 0, il = mesh.vertexCount; i < il; ++i) {
+ Vec3.fromArray(a, v, i * 3)
+ const k = hash(a, fractionDigits)
+ const count = map.get(k)
+ if (count !== undefined) {
+ duplicates += 1
+ map.set(k, count + 1)
+ } else {
+ map.set(k, 1)
+ }
+ }
+ return duplicates
+ }
+
export function computeNormals(surface: Mesh): Task<Mesh> {
return Task.create<Mesh>('Surface (Compute Normals)', async ctx => {
if (surface.normalsComputed) return surface;
--
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