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git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@568 d0cd1f9f-072b-0410-8dd7-cf729c803f20
485 lines
13 KiB
C
485 lines
13 KiB
C
/**********************************************************************
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* File: ipoints.h (Formerly icoords.h)
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* Description: Inline functions for coords.h.
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* Author: Ray Smith
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* Created: Fri Jun 21 15:14:21 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 IPOINTS_H
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#define IPOINTS_H
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#include <math.h>
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/**********************************************************************
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* operator!
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*
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* Rotate an ICOORD 90 degrees anticlockwise.
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**********************************************************************/
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inline ICOORD
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operator! ( //rotate 90 deg anti
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const ICOORD & src //thing to rotate
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) {
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ICOORD result; //output
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result.xcoord = -src.ycoord;
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result.ycoord = src.xcoord;
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return result;
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}
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/**********************************************************************
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* operator-
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*
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* Unary minus of an ICOORD.
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**********************************************************************/
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inline ICOORD
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operator- ( //unary minus
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const ICOORD & src //thing to minus
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) {
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ICOORD result; //output
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result.xcoord = -src.xcoord;
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result.ycoord = -src.ycoord;
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return result;
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}
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/**********************************************************************
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* operator+
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*
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* Add 2 ICOORDS.
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**********************************************************************/
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inline ICOORD
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operator+ ( //sum vectors
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const ICOORD & op1, //operands
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const ICOORD & op2) {
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ICOORD sum; //result
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sum.xcoord = op1.xcoord + op2.xcoord;
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sum.ycoord = op1.ycoord + op2.ycoord;
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return sum;
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}
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/**********************************************************************
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* operator+=
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*
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* Add 2 ICOORDS.
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**********************************************************************/
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inline ICOORD &
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operator+= ( //sum vectors
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ICOORD & op1, //operands
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const ICOORD & op2) {
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op1.xcoord += op2.xcoord;
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op1.ycoord += op2.ycoord;
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return op1;
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}
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/**********************************************************************
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* operator-
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*
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* Subtract 2 ICOORDS.
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**********************************************************************/
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inline ICOORD
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operator- ( //subtract vectors
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const ICOORD & op1, //operands
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const ICOORD & op2) {
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ICOORD sum; //result
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sum.xcoord = op1.xcoord - op2.xcoord;
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sum.ycoord = op1.ycoord - op2.ycoord;
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return sum;
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}
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/**********************************************************************
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* operator-=
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*
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* Subtract 2 ICOORDS.
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**********************************************************************/
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inline ICOORD &
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operator-= ( //sum vectors
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ICOORD & op1, //operands
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const ICOORD & op2) {
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op1.xcoord -= op2.xcoord;
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op1.ycoord -= op2.ycoord;
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return op1;
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}
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/**********************************************************************
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* operator%
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*
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* Scalar product of 2 ICOORDS.
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**********************************************************************/
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inline inT32
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operator% ( //scalar product
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const ICOORD & op1, //operands
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const ICOORD & op2) {
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return op1.xcoord * op2.xcoord + op1.ycoord * op2.ycoord;
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}
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/**********************************************************************
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* operator*
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*
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* Cross product of 2 ICOORDS.
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**********************************************************************/
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inline inT32 operator *( //cross product
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const ICOORD &op1, //operands
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const ICOORD &op2) {
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return op1.xcoord * op2.ycoord - op1.ycoord * op2.xcoord;
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}
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/**********************************************************************
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* operator*
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*
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* Scalar multiply of an ICOORD.
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**********************************************************************/
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inline ICOORD operator *( //scalar multiply
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const ICOORD &op1, //operands
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inT16 scale) {
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ICOORD result; //output
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result.xcoord = op1.xcoord * scale;
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result.ycoord = op1.ycoord * scale;
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return result;
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}
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inline ICOORD operator *( //scalar multiply
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inT16 scale,
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const ICOORD &op1 //operands
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) {
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ICOORD result; //output
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result.xcoord = op1.xcoord * scale;
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result.ycoord = op1.ycoord * scale;
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return result;
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}
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/**********************************************************************
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* operator*=
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*
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* Scalar multiply of an ICOORD.
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**********************************************************************/
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inline ICOORD &
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operator*= ( //scalar multiply
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ICOORD & op1, //operands
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inT16 scale) {
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op1.xcoord *= scale;
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op1.ycoord *= scale;
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return op1;
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}
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/**********************************************************************
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* operator/
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*
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* Scalar divide of an ICOORD.
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**********************************************************************/
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inline ICOORD
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operator/ ( //scalar divide
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const ICOORD & op1, //operands
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inT16 scale) {
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ICOORD result; //output
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result.xcoord = op1.xcoord / scale;
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result.ycoord = op1.ycoord / scale;
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return result;
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}
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/**********************************************************************
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* operator/=
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*
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* Scalar divide of an ICOORD.
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**********************************************************************/
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inline ICOORD &
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operator/= ( //scalar divide
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ICOORD & op1, //operands
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inT16 scale) {
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op1.xcoord /= scale;
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op1.ycoord /= scale;
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return op1;
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}
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/**********************************************************************
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* ICOORD::rotate
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*
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* Rotate an ICOORD by the given (normalized) (cos,sin) vector.
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**********************************************************************/
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inline void ICOORD::rotate( //rotate by vector
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const FCOORD& vec) {
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inT16 tmp;
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tmp = (inT16) floor (xcoord * vec.x () - ycoord * vec.y () + 0.5);
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ycoord = (inT16) floor (ycoord * vec.x () + xcoord * vec.y () + 0.5);
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xcoord = tmp;
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}
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/**********************************************************************
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* operator!
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*
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* Rotate an FCOORD 90 degrees anticlockwise.
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**********************************************************************/
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inline FCOORD
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operator! ( //rotate 90 deg anti
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const FCOORD & src //thing to rotate
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) {
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FCOORD result; //output
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result.xcoord = -src.ycoord;
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result.ycoord = src.xcoord;
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return result;
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}
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/**********************************************************************
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* operator-
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*
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* Unary minus of an FCOORD.
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**********************************************************************/
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inline FCOORD
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operator- ( //unary minus
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const FCOORD & src //thing to minus
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) {
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FCOORD result; //output
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result.xcoord = -src.xcoord;
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result.ycoord = -src.ycoord;
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return result;
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}
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/**********************************************************************
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* operator+
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*
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* Add 2 FCOORDS.
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**********************************************************************/
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inline FCOORD
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operator+ ( //sum vectors
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const FCOORD & op1, //operands
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const FCOORD & op2) {
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FCOORD sum; //result
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sum.xcoord = op1.xcoord + op2.xcoord;
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sum.ycoord = op1.ycoord + op2.ycoord;
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return sum;
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}
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/**********************************************************************
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* operator+=
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*
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* Add 2 FCOORDS.
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**********************************************************************/
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inline FCOORD &
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operator+= ( //sum vectors
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FCOORD & op1, //operands
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const FCOORD & op2) {
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op1.xcoord += op2.xcoord;
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op1.ycoord += op2.ycoord;
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return op1;
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}
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/**********************************************************************
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* operator-
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*
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* Subtract 2 FCOORDS.
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**********************************************************************/
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inline FCOORD
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operator- ( //subtract vectors
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const FCOORD & op1, //operands
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const FCOORD & op2) {
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FCOORD sum; //result
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sum.xcoord = op1.xcoord - op2.xcoord;
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sum.ycoord = op1.ycoord - op2.ycoord;
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return sum;
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}
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/**********************************************************************
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* operator-=
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*
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* Subtract 2 FCOORDS.
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**********************************************************************/
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inline FCOORD &
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operator-= ( //sum vectors
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FCOORD & op1, //operands
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const FCOORD & op2) {
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op1.xcoord -= op2.xcoord;
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op1.ycoord -= op2.ycoord;
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return op1;
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}
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/**********************************************************************
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* operator%
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*
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* Scalar product of 2 FCOORDS.
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**********************************************************************/
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inline float
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operator% ( //scalar product
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const FCOORD & op1, //operands
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const FCOORD & op2) {
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return op1.xcoord * op2.xcoord + op1.ycoord * op2.ycoord;
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}
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/**********************************************************************
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* operator*
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*
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* Cross product of 2 FCOORDS.
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**********************************************************************/
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inline float operator *( //cross product
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const FCOORD &op1, //operands
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const FCOORD &op2) {
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return op1.xcoord * op2.ycoord - op1.ycoord * op2.xcoord;
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}
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/**********************************************************************
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* operator*
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*
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* Scalar multiply of an FCOORD.
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**********************************************************************/
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inline FCOORD operator *( //scalar multiply
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const FCOORD &op1, //operands
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float scale) {
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FCOORD result; //output
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result.xcoord = op1.xcoord * scale;
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result.ycoord = op1.ycoord * scale;
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return result;
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}
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inline FCOORD operator *( //scalar multiply
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float scale,
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const FCOORD &op1 //operands
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) {
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FCOORD result; //output
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result.xcoord = op1.xcoord * scale;
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result.ycoord = op1.ycoord * scale;
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return result;
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}
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/**********************************************************************
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* operator*=
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*
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* Scalar multiply of an FCOORD.
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**********************************************************************/
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inline FCOORD &
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operator*= ( //scalar multiply
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FCOORD & op1, //operands
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float scale) {
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op1.xcoord *= scale;
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op1.ycoord *= scale;
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return op1;
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}
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/**********************************************************************
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* operator/
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*
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* Scalar divide of an FCOORD.
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**********************************************************************/
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inline FCOORD
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operator/ ( //scalar divide
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const FCOORD & op1, //operands
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float scale) {
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FCOORD result; //output
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if (scale != 0) {
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result.xcoord = op1.xcoord / scale;
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result.ycoord = op1.ycoord / scale;
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}
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return result;
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}
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/**********************************************************************
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* operator/=
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*
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* Scalar divide of an FCOORD.
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**********************************************************************/
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inline FCOORD &
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operator/= ( //scalar divide
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FCOORD & op1, //operands
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float scale) {
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if (scale != 0) {
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op1.xcoord /= scale;
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op1.ycoord /= scale;
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}
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return op1;
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}
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/**********************************************************************
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* rotate
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*
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* Rotate an FCOORD by the given (normalized) (cos,sin) vector.
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**********************************************************************/
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inline void FCOORD::rotate( //rotate by vector
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const FCOORD vec) {
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float tmp;
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tmp = xcoord * vec.x () - ycoord * vec.y ();
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ycoord = ycoord * vec.x () + xcoord * vec.y ();
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xcoord = tmp;
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}
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inline void FCOORD::unrotate(const FCOORD& vec) {
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rotate(FCOORD(vec.x(), -vec.y()));
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}
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#endif
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