Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/classify/fpoint.cpp @ 41:71bcc18e306f

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MERGE: New upstream PyMuPDF v1.26.5 including MuPDF v1.26.10 BUGS: Needs some additional changes yet. Not yet tested.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 15:24:40 +0200
parents b50eed0cc0ef
children
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1 /******************************************************************************
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2 ** Filename: fpoint.cpp
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3 ** Purpose: Abstract data type for a 2D point (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 ** Licensed under the Apache License, Version 2.0 (the "License");
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8 ** you may not use this file except in compliance with the License.
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9 ** You may obtain a copy of the License at
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10 ** http://www.apache.org/licenses/LICENSE-2.0
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11 ** Unless required by applicable law or agreed to in writing, software
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12 ** distributed under the License is distributed on an "AS IS" BASIS,
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13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 ** See the License for the specific language governing permissions and
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15 ** limitations under the License.
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16 ******************************************************************************/
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17 /*----------------------------------------------------------------------------
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18 Include Files and Type Defines
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19 ----------------------------------------------------------------------------*/
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20 #define _USE_MATH_DEFINES // for M_PI
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21 #include "fpoint.h"
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22 #include <cmath> // for M_PI
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23 #include <cstdio>
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25 /*----------------------------------------------------------------------------
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26 Public Code
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27 ----------------------------------------------------------------------------*/
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29 float DistanceBetween(FPOINT A, FPOINT B) {
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30 const double xd = XDelta(A, B);
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31 const double yd = YDelta(A, B);
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32 return sqrt(static_cast<double>(xd * xd + yd * yd));
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33 }
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34
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35 /**
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36 * Return the angle from Point1 to Point2 normalized to
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37 * lie in the range 0 to FullScale (where FullScale corresponds
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38 * to 2*pi or 360 degrees).
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39 * @param Point1 points to compute angle between
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40 * @param Point2 points to compute angle between
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41 * @param FullScale value to associate with 2*pi
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42 * @return angle
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43 */
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44 float NormalizedAngleFrom(FPOINT *Point1, FPOINT *Point2, float FullScale) {
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45 float NumRadsInCircle = 2.0 * M_PI;
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47 float Angle = AngleFrom(*Point1, *Point2);
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48 if (Angle < 0.0) {
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49 Angle += NumRadsInCircle;
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50 }
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51 Angle *= FullScale / NumRadsInCircle;
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52 if (Angle < 0.0 || Angle >= FullScale) {
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53 Angle = 0.0;
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54 }
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55 return (Angle);
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56 }