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git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@158 d0cd1f9f-072b-0410-8dd7-cf729c803f20
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
/**********************************************************************
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* File: drawedg.c (Formerly drawedge.c)
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* Description: Collection of functions to draw things to do with edge detection.
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* Author: Ray Smith
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* Created: Thu Jun 06 13:29:20 BST 1991
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*
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* (C) Copyright 1991, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#include "mfcpch.h"
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#include "drawedg.h"
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#define IMAGE_WIN_NAME "Edges"//title of window
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#define IMAGE_XPOS 250
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#define IMAGE_YPOS 0 //default position
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#define CTRLD '\004' //control D
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#define EXTERN
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/**********************************************************************
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* create_edges_window
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*
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* Create the edges window.
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**********************************************************************/
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ScrollView* create_edges_window( //make window
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ICOORD page_tr //size of image
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) {
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ScrollView* image_win; //image window
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//create the window
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image_win = new ScrollView (IMAGE_WIN_NAME, IMAGE_XPOS, IMAGE_YPOS, 0, 0, page_tr.x (), page_tr.y ());
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return image_win; //window
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}
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/**********************************************************************
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* draw_raw_edge
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*
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* Draw the raw steps to the given window in the given colour.
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**********************************************************************/
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void draw_raw_edge( //draw the cracks
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ScrollView* fd, //window to draw in
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CRACKEDGE *start, //start of loop
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ScrollView::Color colour //colour to draw in
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) {
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CRACKEDGE *edgept; //current point
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fd->Pen(colour);
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edgept = start;
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fd->SetCursor(edgept->pos.x (), edgept->pos.y ());
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do {
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do
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edgept = edgept->next;
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//merge straight lines
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while (edgept != start && edgept->prev->stepx == edgept->stepx && edgept->prev->stepy == edgept->stepy);
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//draw lines
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fd->DrawTo(edgept->pos.x (), edgept->pos.y ());
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}
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while (edgept != start);
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}
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