--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/wordrec/render.cpp	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,126 @@
+/******************************************************************************
+ *
+ * File:         render.cpp  (Formerly render.c)
+ * Description:  Convert the various data type into line lists
+ * 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 "render.h"
+
+#include "blobs.h"
+
+#include <cmath>
+
+namespace tesseract {
+
+/*----------------------------------------------------------------------
+              V a r i a b l e s
+----------------------------------------------------------------------*/
+ScrollView *blob_window = nullptr;
+
+ScrollView::Color color_list[] = {ScrollView::RED,  ScrollView::CYAN,  ScrollView::YELLOW,
+                                  ScrollView::BLUE, ScrollView::GREEN, ScrollView::WHITE};
+
+BOOL_VAR(wordrec_display_all_blobs, 0, "Display Blobs");
+
+BOOL_VAR(wordrec_blob_pause, 0, "Blob pause");
+
+/*----------------------------------------------------------------------
+              F u n c t i o n s
+----------------------------------------------------------------------*/
+#ifndef GRAPHICS_DISABLED
+/**********************************************************************
+ * display_blob
+ *
+ * Macro to display blob in a window.
+ **********************************************************************/
+void display_blob(TBLOB *blob, ScrollView::Color color) {
+  /* Size of drawable */
+  if (blob_window == nullptr) {
+    blob_window = new ScrollView("Blobs", 520, 10, 500, 256, 2000, 256, true);
+  } else {
+    blob_window->Clear();
+  }
+
+  render_blob(blob_window, blob, color);
+}
+
+/**********************************************************************
+ * render_blob
+ *
+ * Create a list of line segments that represent the expanded outline
+ * that was supplied as input.
+ **********************************************************************/
+void render_blob(ScrollView *window, TBLOB *blob, ScrollView::Color color) {
+  /* No outline */
+  if (!blob) {
+    return;
+  }
+
+  render_outline(window, blob->outlines, color);
+}
+
+/**********************************************************************
+ * render_edgepts
+ *
+ * Create a list of line segments that represent the expanded outline
+ * that was supplied as input.
+ **********************************************************************/
+void render_edgepts(ScrollView *window, EDGEPT *edgept, ScrollView::Color color) {
+  if (!edgept) {
+    return;
+  }
+
+  float x = edgept->pos.x;
+  float y = edgept->pos.y;
+  EDGEPT *this_edge = edgept;
+
+  window->Pen(color);
+  window->SetCursor(x, y);
+  do {
+    this_edge = this_edge->next;
+    x = this_edge->pos.x;
+    y = this_edge->pos.y;
+    window->DrawTo(x, y);
+  } while (edgept != this_edge);
+}
+
+/**********************************************************************
+ * render_outline
+ *
+ * Create a list of line segments that represent the expanded outline
+ * that was supplied as input.
+ **********************************************************************/
+void render_outline(ScrollView *window, TESSLINE *outline, ScrollView::Color color) {
+  /* No outline */
+  if (!outline) {
+    return;
+  }
+  /* Draw Compact outline */
+  if (outline->loop) {
+    render_edgepts(window, outline->loop, color);
+  }
+  /* Add on next outlines */
+  render_outline(window, outline->next, color);
+}
+
+#endif // !GRAPHICS_DISABLED
+
+} // namespace tesseract