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- {"ast":null,"code":"import { TmpVectors, Vector3 } from \"../Maths/math.vector.js\";\nimport { SubMesh } from \"./subMesh.js\";\n/**\n * @internal\n */\nSubMesh.prototype._projectOnTrianglesToRef = function (vector, positions, indices, step, checkStopper, ref) {\n // Triangles test\n const proj = TmpVectors.Vector3[0];\n const tmp = TmpVectors.Vector3[1];\n let distance = +Infinity;\n for (let index = this.indexStart; index < this.indexStart + this.indexCount - (3 - step); index += step) {\n const indexA = indices[index];\n const indexB = indices[index + 1];\n const indexC = indices[index + 2];\n if (checkStopper && indexC === 0xffffffff) {\n index += 2;\n continue;\n }\n const p0 = positions[indexA];\n const p1 = positions[indexB];\n const p2 = positions[indexC];\n // stay defensive and don't check against undefined positions.\n if (!p0 || !p1 || !p2) {\n continue;\n }\n const tmpDist = Vector3.ProjectOnTriangleToRef(vector, p0, p1, p2, tmp);\n if (tmpDist < distance) {\n proj.copyFrom(tmp);\n distance = tmpDist;\n }\n }\n ref.copyFrom(proj);\n return distance;\n};\n/**\n * @internal\n */\nSubMesh.prototype._projectOnUnIndexedTrianglesToRef = function (vector, positions, indices, ref) {\n // Triangles test\n const proj = TmpVectors.Vector3[0];\n const tmp = TmpVectors.Vector3[1];\n let distance = +Infinity;\n for (let index = this.verticesStart; 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