tesseract
3.03
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00001 /********************************************************************** 00002 * File: drawedg.c (Formerly drawedge.c) 00003 * Description: Collection of functions to draw things to do with edge detection. 00004 * Author: Ray Smith 00005 * Created: Thu Jun 06 13:29:20 BST 1991 00006 * 00007 * (C) Copyright 1991, Hewlett-Packard Ltd. 00008 ** Licensed under the Apache License, Version 2.0 (the "License"); 00009 ** you may not use this file except in compliance with the License. 00010 ** You may obtain a copy of the License at 00011 ** http://www.apache.org/licenses/LICENSE-2.0 00012 ** Unless required by applicable law or agreed to in writing, software 00013 ** distributed under the License is distributed on an "AS IS" BASIS, 00014 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00015 ** See the License for the specific language governing permissions and 00016 ** limitations under the License. 00017 * 00018 **********************************************************************/ 00019 00020 #include "drawedg.h" 00021 00022 // Include automatically generated configuration file if running autoconf. 00023 #ifdef HAVE_CONFIG_H 00024 #include "config_auto.h" 00025 #endif 00026 00027 #ifndef GRAPHICS_DISABLED 00028 00030 #define IMAGE_WIN_NAME "Edges" 00031 #define IMAGE_XPOS 250 00032 00033 #define IMAGE_YPOS 0 00034 00035 #define EXTERN 00036 00044 ScrollView* create_edges_window(ICOORD page_tr) { 00045 ScrollView* image_win; //image window 00046 00047 //create the window 00048 image_win = new ScrollView (IMAGE_WIN_NAME, IMAGE_XPOS, IMAGE_YPOS, 0, 0, page_tr.x (), page_tr.y ()); 00049 return image_win; //window 00050 } 00051 00052 00062 void draw_raw_edge(ScrollView* fd, 00063 CRACKEDGE *start, 00064 ScrollView::Color colour) { 00065 CRACKEDGE *edgept; //current point 00066 00067 fd->Pen(colour); 00068 edgept = start; 00069 fd->SetCursor(edgept->pos.x (), edgept->pos.y ()); 00070 do { 00071 do 00072 edgept = edgept->next; 00073 //merge straight lines 00074 while (edgept != start && edgept->prev->stepx == edgept->stepx && edgept->prev->stepy == edgept->stepy); 00075 00076 //draw lines 00077 fd->DrawTo(edgept->pos.x (), edgept->pos.y ()); 00078 } 00079 while (edgept != start); 00080 } 00081 00082 #endif // GRAPHICS_DISABLED