--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Sources/STLToolbox.cpp	Thu Apr 04 18:50:11 2024 +0200
@@ -0,0 +1,91 @@
+/**
+ * SPDX-FileCopyrightText: 2023-2024 Sebastien Jodogne, UCLouvain, Belgium
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+/**
+ * STL plugin for Orthanc
+ * Copyright (C) 2023-2024 Sebastien Jodogne, UCLouvain, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "STLToolbox.h"
+
+#include <OrthancException.h>
+#include <Toolbox.h>
+
+#include <algorithm>
+#include <cmath>
+
+
+namespace STLToolbox
+{
+  bool IsNear(double a,
+              double b)
+  {
+    return std::abs(a - b) < 10.0 * std::numeric_limits<double>::epsilon();
+  }
+
+
+  bool MyParseDouble(double& value,
+                     const std::string& s)
+  {
+#if 1
+    char* end = NULL;
+    value = strtod(s.c_str(), &end);
+    return (end == s.c_str() + s.size());
+#else
+    return Orthanc::SerializationToolbox::ParseDouble(value, s);
+#endif
+  }
+
+
+  namespace
+  {
+    struct IsNearPredicate
+    {
+      bool operator() (const double& a,
+                       const double& b)
+      {
+        return IsNear(a, b);
+      }
+    };
+  }
+
+
+  void RemoveDuplicateValues(std::vector<double>& v)
+  {
+    IsNearPredicate predicate;
+    std::vector<double>::iterator last = std::unique(v.begin(), v.end(), predicate);
+    v.erase(last, v.end());
+  }
+
+
+  std::string GetStringValue(DcmItem& item,
+                             const DcmTagKey& key)
+  {
+    const char* s = NULL;
+    if (!item.findAndGetString(key, s).good() ||
+        s == NULL)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
+    }
+    else
+    {
+      return Orthanc::Toolbox::StripSpaces(s);
+    }
+  }
+}