--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/wordrec/plotedges.cpp	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,112 @@
+/******************************************************************************
+ *
+ * File:         plotedges.cpp  (Formerly plotedges.c)
+ * Description:  Graphics routines for "Edges" and "Outlines" windows
+ * Author:       Mark Seaman, OCR Technology
+ *
+ * (c) Copyright 1989, Hewlett-Packard Company.
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ ** http://www.apache.org/licenses/LICENSE-2.0
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ *
+ *****************************************************************************/
+
+// Include automatically generated configuration file if running autoconf.
+#ifdef HAVE_CONFIG_H
+#  include "config_auto.h"
+#endif
+
+#include "plotedges.h"
+
+#include "render.h"
+#include "split.h"
+
+#ifndef GRAPHICS_DISABLED
+
+namespace tesseract {
+
+/*----------------------------------------------------------------------
+              V a r i a b l e s
+----------------------------------------------------------------------*/
+ScrollView *edge_window = nullptr;
+
+/*----------------------------------------------------------------------
+              F u n c t i o n s
+----------------------------------------------------------------------*/
+/**********************************************************************
+ * display_edgepts
+ *
+ * Macro to display edge points in a window.
+ **********************************************************************/
+void display_edgepts(LIST outlines) {
+  /* Set up window */
+  if (edge_window == nullptr) {
+    edge_window = new ScrollView("Edges", 750, 150, 400, 128, 800, 256, true);
+  } else {
+    edge_window->Clear();
+  }
+  /* Render the outlines */
+  auto window = edge_window;
+  /* Reclaim old memory */
+  iterate(outlines) {
+    render_edgepts(window, reinterpret_cast<EDGEPT *>(outlines->first_node()), ScrollView::WHITE);
+  }
+}
+
+/**********************************************************************
+ * draw_blob_edges
+ *
+ * Display the edges of this blob in the edges window.
+ **********************************************************************/
+void draw_blob_edges(TBLOB *blob) {
+  if (wordrec_display_splits) {
+    LIST edge_list = NIL_LIST;
+    for (TESSLINE *ol = blob->outlines; ol != nullptr; ol = ol->next) {
+      edge_list = push(edge_list, ol->loop);
+    }
+    display_edgepts(edge_list);
+    destroy(edge_list);
+  }
+}
+
+/**********************************************************************
+ * mark_outline
+ *
+ * Make a mark on the edges window at a particular location.
+ **********************************************************************/
+void mark_outline(EDGEPT *edgept) { /* Start of point list */
+  auto window = edge_window;
+  float x = edgept->pos.x;
+  float y = edgept->pos.y;
+
+  window->Pen(ScrollView::RED);
+  window->SetCursor(x, y);
+
+  x -= 4;
+  y -= 12;
+  window->DrawTo(x, y);
+
+  x -= 2;
+  y += 4;
+  window->DrawTo(x, y);
+
+  x -= 4;
+  y += 2;
+  window->DrawTo(x, y);
+
+  x += 10;
+  y += 6;
+  window->DrawTo(x, y);
+
+  window->Update();
+}
+
+} // namespace tesseract
+
+#endif // !GRAPHICS_DISABLED