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git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@531 d0cd1f9f-072b-0410-8dd7-cf729c803f20
83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
/**********************************************************************
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* File: stepblob.h (Formerly cblob.h)
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* Description: Code for C_BLOB class.
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* Author: Ray Smith
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* Created: Tue Oct 08 10:41:13 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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#ifndef STEPBLOB_H
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#define STEPBLOB_H
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#include "coutln.h"
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#include "rect.h"
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struct Pix;
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class C_BLOB:public ELIST_LINK
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{
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public:
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C_BLOB() {
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}
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explicit C_BLOB(C_OUTLINE_LIST *outline_list);
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// Simpler constructor to build a blob from a single outline that has
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// already been fully initialized.
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explicit C_BLOB(C_OUTLINE* outline);
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// Build and return a fake blob containing a single fake outline with no
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// steps.
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static C_BLOB* FakeBlob(const TBOX& box);
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C_OUTLINE_LIST *out_list() { //get outline list
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return &outlines;
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}
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TBOX bounding_box(); //compute bounding box
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inT32 area(); //compute area
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inT32 perimeter(); // Total perimeter of outlines and 1st level children.
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inT32 outer_area(); //compute area
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inT32 count_transitions( //count maxima
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inT32 threshold); //size threshold
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void move(const ICOORD vec); // repostion blob by vector
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void rotate(const FCOORD& rotation); // Rotate by given vector.
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// Returns a Pix rendering of the blob. pixDestroy after use.
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Pix* render();
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void plot( //draw one
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ScrollView* window, //window to draw in
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ScrollView::Color blob_colour, //for outer bits
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ScrollView::Color child_colour); //for holes
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C_BLOB& operator= (const C_BLOB & source) {
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if (!outlines.empty ())
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outlines.clear();
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outlines.deep_copy(&source.outlines, &C_OUTLINE::deep_copy);
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return *this;
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}
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static C_BLOB* deep_copy(const C_BLOB* src) {
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C_BLOB* blob = new C_BLOB;
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*blob = *src;
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return blob;
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}
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private:
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C_OUTLINE_LIST outlines; //master elements
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};
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ELISTIZEH (C_BLOB)
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#endif
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