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added arc line path pathfinish files for work on Issue 3: Path Input,…
… Path Output
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* Copyright 2010 Anders Wallin (anders.e.e.wallin "at" gmail.com) | ||
| * | ||
| * This file is part of OpenCAMlib. | ||
| * | ||
| * OpenCAMlib is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * OpenCAMlib is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with OpenCAMlib. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| #include <iostream> | ||
| #include <stdio.h> | ||
| #include <sstream> | ||
| #include <math.h> | ||
| #include "arc.h" | ||
|
|
||
| Arc::Arc(const Point &p1in, const Point &p2in, const Point &cin, bool dirin) { | ||
| p1=p1in; | ||
| p2=p2in; | ||
| c=cin; | ||
| dir=dirin; | ||
| setProperties(); | ||
| } | ||
|
|
||
| Arc::Arc(const Arc &a) { | ||
| p1=a.p1; | ||
| p2=a.p2; | ||
| c=a.c; | ||
| dir=a.dir; | ||
| setProperties(); | ||
| } | ||
|
|
||
| void Arc::setProperties() { | ||
| // arc properties | ||
| Point vs = Point(c, p1).xyPerp(); | ||
| Point ve = Point(c, p2).xyPerp(); | ||
|
|
||
| if(!dir) { | ||
| vs = -vs; // reverse directions for CW arc | ||
| ve = -ve; | ||
| } | ||
|
|
||
| radius = vs.xyNorm(); | ||
| length = fabs(xyIncludedAngle(vs, ve, dir)) * radius; | ||
| } | ||
|
|
||
| std::ostream& operator<<(std::ostream &stream, const Arc& a) | ||
| { | ||
| stream << "(" << a.p1 << ", " << a.p2 << ", " << a.c << ", " << a.dir << ")"; | ||
| return stream; | ||
| } | ||
|
|
||
| Point Arc::getPoint(double param)const { | ||
| /// returns a point which is 0-1 along span | ||
| if(fabs(param) < 0.00000000000001)return p1; | ||
| if(fabs(param - 1.0) < 0.00000000000001)return p2; | ||
|
|
||
| double d = param * length; | ||
| if(!dir)d = -d; | ||
| Point v(c, p1); | ||
| v.xyRotate(d * dir / radius); | ||
| return v + c; | ||
| } | ||
|
|
||
| double Arc::xyIncludedAngle(const Point& v1, const Point& v2, bool dir) { | ||
| // returns the absolute included angle between 2 vectors in the direction of dir ( true=acw false=cw) | ||
| int d = dir ? 1 : (-1); | ||
| double inc_ang = v1.dot(v2); | ||
| if(inc_ang > 1. - 1.0e-10) return 0; | ||
| if(inc_ang < -1. + 1.0e-10) | ||
| inc_ang = 3.1415926535897932; | ||
| else { // dot product, v1 . v2 = cos ang | ||
| if(inc_ang > 1.0) inc_ang = 1.0; | ||
| inc_ang = acos(inc_ang); // 0 to pi radians | ||
|
|
||
| double x = v1.x * v2.x + v1.y * v2.y; | ||
| if(d * x < 0) inc_ang = 2 * 3.1415926535897932 - inc_ang ; // cp | ||
| } | ||
| return d * inc_ang; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| /* Copyright 2010 Anders Wallin (anders.e.e.wallin "at" gmail.com) | ||
| * | ||
| * This file is part of OpenCAMlib. | ||
| * | ||
| * OpenCAMlib is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * OpenCAMlib is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with OpenCAMlib. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| #ifndef ARC_H | ||
| #define ARC_H | ||
|
|
||
| #include <iostream> | ||
| #include "point.h" | ||
|
|
||
| /// | ||
| /// \brief a finite line in 3D space specified by its end points (p1, p2) | ||
| /// | ||
|
|
||
| /// | ||
| /// longer documentation here. | ||
| /// | ||
| class Arc { | ||
| double length; // 2d length | ||
| double radius; | ||
|
|
||
| public: | ||
| Arc(){} | ||
| Arc(const Point &p1, const Point &p2, const Point &c, bool dir); | ||
| Arc(const Arc &a); | ||
|
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| // text output | ||
| friend std::ostream& operator<<(std::ostream &stream, const Arc &a); | ||
|
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| /// start point | ||
| Point p1; | ||
| /// end point | ||
| Point p2; | ||
| /// centre point | ||
| Point c; | ||
| /// direction true for anti-clockwise | ||
| bool dir; | ||
|
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| double length2d()const{return length;} | ||
| Point getPoint(double fraction)const; | ||
| void setProperties(); | ||
| double xyIncludedAngle(const Point& v1, const Point& v2, bool dir = true); | ||
| }; | ||
|
|
||
| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /* Copyright 2010 Anders Wallin (anders.e.e.wallin "at" gmail.com) | ||
| * | ||
| * This file is part of OpenCAMlib. | ||
| * | ||
| * OpenCAMlib is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * OpenCAMlib is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with OpenCAMlib. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| #include <iostream> | ||
| #include <stdio.h> | ||
| #include <sstream> | ||
| #include <math.h> | ||
| #include "line.h" | ||
|
|
||
| Line::Line(const Point &p1in, const Point &p2in) | ||
| { | ||
| p1=p1in; | ||
| p2=p2in; | ||
| } | ||
|
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||
| Line::Line(const Line &l) | ||
| { | ||
| p1=l.p1; | ||
| p2=l.p2; | ||
| } | ||
|
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| std::ostream& operator<<(std::ostream &stream, const Line& l) | ||
| { | ||
| stream << "(" << l.p1 << ", " << l.p2 << ")"; | ||
| return stream; | ||
| } | ||
|
|
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| double Line::length2d()const | ||
| { | ||
| return Point(p1, p2).xyNorm(); | ||
| } | ||
|
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| Point Line::getPoint(double param)const | ||
| { | ||
| return Point(p1, p2) * param + p1; | ||
| } |
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