Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/classify/fpoint.h @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
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1 /******************************************************************************
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2 ** Filename: fpoint.h
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3 ** Purpose: Abstract data type for 2D points (floating point coords)
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4 ** Author: Dan Johnson
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5 **
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6 ** (c) Copyright Hewlett-Packard Company, 1988.
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7 ** (c) Copyright Hewlett-Packard Company, 1988.
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8 ** Licensed under the Apache License, Version 2.0 (the "License");
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9 ** you may not use this file except in compliance with the License.
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10 ** You may obtain a copy of the License at
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11 ** http://www.apache.org/licenses/LICENSE-2.0
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12 ** Unless required by applicable law or agreed to in writing, software
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13 ** distributed under the License is distributed on an "AS IS" BASIS,
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14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 ** See the License for the specific language governing permissions and
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16 ** limitations under the License.
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17 ******************************************************************************/
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19 #ifndef FPOINT_H
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20 #define FPOINT_H
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22 /**----------------------------------------------------------------------------
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23 Include Files and Type Defines
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24 ----------------------------------------------------------------------------**/
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25 #include <cmath>
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26 #include <cstdio>
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28 /* define data structure to hold 2D points or vectors using floating point */
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29 struct FPOINT {
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30 float x, y;
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31 };
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32 using FVECTOR = FPOINT;
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34 /**----------------------------------------------------------------------------
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35 Macros
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36 ----------------------------------------------------------------------------**/
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37 /* macros for computing miscellaneous functions of 2 points */
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38 #define XDelta(A, B) ((B).x - (A).x)
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39 #define YDelta(A, B) ((B).y - (A).y)
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40 #define SlopeFrom(A, B) (YDelta(A, B) / XDelta(A, B))
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41 #define AngleFrom(A, B) (atan2((double)YDelta(A, B), (double)XDelta(A, B)))
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43 #define XIntersectionOf(A, B, X) (SlopeFrom(A, B) * ((X)-A.x) + A.y)
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45 /*-------------------------------------------------------------------------
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46 Public Function Prototypes
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47 ---------------------------------------------------------------------------*/
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49 float DistanceBetween(FPOINT A, FPOINT B);
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51 float NormalizedAngleFrom(FPOINT *Point1, FPOINT *Point2, float FullScale);
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53 #endif