/**********************************************************************
 * File:        polyaprx.h  (Formerly polygon.h)
 * Description: Code for polygonal approximation from old edgeprog.
 * Author:      Ray Smith
 * Created:     Thu Nov 25 11:42:04 GMT 1993
 *
 * (C) Copyright 1993, Hewlett-Packard Ltd.
 ** 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.
 *
 **********************************************************************/

#ifndef POLYAPRX_H
#define POLYAPRX_H

namespace tesseract {

class C_OUTLINE;
struct EDGEPT;
struct TESSLINE;

// convert a chain-coded input to the old OUTLINE approximation
TESSLINE *ApproximateOutline(bool allow_detailed_fx, C_OUTLINE *c_outline);
EDGEPT *edgesteps_to_edgepts( // convert outline
    C_OUTLINE *c_outline,     // input
    EDGEPT edgepts[]          // output is array
);
void fix2(         // polygonal approx
    EDGEPT *start, /*loop to approimate */
    int area);
EDGEPT *poly2(       // second poly
    EDGEPT *startpt, /*start of loop */
    int area         /*area of blob box */
);
void cutline(              // recursive refine
    EDGEPT *first,         /*ends of line */
    EDGEPT *last, int area /*area of object */
);

} // namespace tesseract

#endif
