263 lines
7.8 KiB
C++
263 lines
7.8 KiB
C++
/****************************************************************************
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**
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** This file is part of the LibreCAD project, a 2D CAD program
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**
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** Copyright (C) 2011-2012 Dongxu Li (dongxuli2011@gmail.com)
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Copyright (C) 2012 Dongxu Li (dongxuli2011@gmail.com)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**********************************************************************/
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#ifndef LC_HYPERBOLA_H
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#define LC_HYPERBOLA_H
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#include "rs_atomicentity.h"
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class RS_Circle;
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class LC_Quadratic;
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/**
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* Holds the data that defines one branch of a hyperbola.
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* majorP is the vector from center to the vertex
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* ratio is the ratio between semi-major and semi-minor axis
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*/
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struct LC_HyperbolaData {
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LC_HyperbolaData() = default;
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LC_HyperbolaData(const RS_Vector& center,
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const RS_Vector& majorP,
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double ratio,
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double angle1, double angle2,
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bool reversed);
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~LC_HyperbolaData() = default;
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/** create data based on foci and a point on hyperbola */
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LC_HyperbolaData(const RS_Vector& focus0,
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const RS_Vector& focus1,
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const RS_Vector& point);
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//! Hyperbola center
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RS_Vector center;
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//! Endpoint of major axis relative to center.
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RS_Vector majorP;
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//! Ratio of minor axis to major axis.
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double ratio;
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//! Start angle
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double angle1;
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//! End angle
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double angle2;
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//! Reversed (cw) flag
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bool reversed;
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};
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std::ostream& operator << (std::ostream& os, const LC_HyperbolaData& ed);
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/**
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* Class for an hyperbola entity.
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*
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* @author Dongxu Li
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*/
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class LC_Hyperbola : public RS_AtomicEntity {
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public:
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LC_Hyperbola() = default;
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LC_Hyperbola(RS_EntityContainer* parent,
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const LC_HyperbolaData& d);
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/** create data based on foci and a point on hyperbola */
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LC_Hyperbola(const RS_Vector& focus0,
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const RS_Vector& focus1,
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const RS_Vector& point);
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RS_Entity* clone() const override;
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/** @return RS2::EntityHyperbola */
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RS2::EntityType rtti() const override{
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return RS2::EntityHyperbola;
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}
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bool isValid() const{
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return m_bValid;
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}
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// double getLength() const;
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// /**
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// //Hyperbola must have ratio<1, and not reversed
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// *@ x1, hyperbola angle
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// *@ x2, hyperbola angle
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// //@return the arc length between hyperbola angle x1, x2
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// **/
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// double getHyperbolaLength(double a1, double a2) const;
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// double getHyperbolaLength(double a2) const;
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/** @return Copy of data that defines the hyperbola. **/
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LC_HyperbolaData getData() const {
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return data;
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}
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RS_VectorSolutions getFoci() const;
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RS_VectorSolutions getRefPoints() const override;
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/**
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* @retval true if the arc is reversed (clockwise),
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* @retval false otherwise
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*/
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bool isReversed() const{
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return data.reversed;
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}
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/** sets the reversed status. */
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void setReversed(bool r){
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data.reversed = r;
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}
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/** @return The rotation angle of this hyperbola */
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double getAngle() const {
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return data.majorP.angle();
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}
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/** @return The start angle of this arc */
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double getAngle1() const {
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return data.angle1;
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}
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/** Sets new start angle. */
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void setAngle1(double a1) {
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data.angle1 = a1;
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}
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/** @return The end angle of this arc */
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double getAngle2() const {
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return data.angle2;
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}
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/** Sets new end angle. */
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void setAngle2(double a2) {
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data.angle2 = a2;
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}
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/** @return The center point (x) of this arc */
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RS_Vector getCenter() const override{
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return data.center;
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}
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/** Sets new center. */
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void setCenter(const RS_Vector& c) {
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data.center = c;
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}
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/** @return The endpoint of the major axis (relative to center). */
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RS_Vector getMajorP() const {
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return data.majorP;
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}
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/** Sets new major point (relative to center). */
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void setMajorP(const RS_Vector& p) {
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data.majorP = p;
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}
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/** @return The ratio of minor to major axis */
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double getRatio() const {
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return data.ratio;
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}
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/** Sets new ratio. */
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void setRatio(double r) {
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data.ratio = r;
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}
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/** @return The major radius of this hyperbola. Same as getRadius() */
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double getMajorRadius() const {
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return data.majorP.magnitude();
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}
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/** @return The minor radius of this hyperbola */
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double getMinorRadius() const {
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return data.majorP.magnitude()*data.ratio;
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}
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void calculateBorders() override{}
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RS_Vector getMiddlePoint(void)const override{return RS_Vector(false);}
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RS_Vector getNearestEndpoint(const RS_Vector& /*coord*/,
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double*/* dist = NULL*/) const override
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{return RS_Vector(false);}
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RS_Vector getNearestPointOnEntity(const RS_Vector& /*coord*/,
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bool /*onEntity = true*/, double*/* dist = NULL*/, RS_Entity**/* entity=NULL*/) const override
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{return RS_Vector(false);}
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RS_Vector getNearestCenter(const RS_Vector& /*coord*/,
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double*/* dist = NULL*/) const override
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{return RS_Vector(false);}
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RS_Vector getNearestMiddle(const RS_Vector& /*coord*/,
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double*/* dist = NULL*/,
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int/* middlePoints = 1*/
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)const override
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{return RS_Vector(false);}
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RS_Vector getNearestDist(double /*distance*/,
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const RS_Vector&/* coord*/,
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double*/* dist = NULL*/) const override
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{return RS_Vector(false);}
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RS_Vector getNearestOrthTan(const RS_Vector& /*coord*/,
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const RS_Line& /*normal*/,
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bool /*onEntity = false*/) const override
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{return RS_Vector(false);}
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double getDistanceToPoint(const RS_Vector& /*coord*/,
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RS_Entity** /*entity=NULL*/,
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RS2::ResolveLevel/* level=RS2::ResolveNone*/,
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double /*solidDist = RS_MAXDOUBLE*/) const override
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{return RS_MAXDOUBLE;}
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bool isPointOnEntity(const RS_Vector& /*coord*/,
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double /*tolerance=RS_TOLERANCE*/) const override;
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void move(const RS_Vector& /*offset*/) override{}
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void rotate(const double& /*angle*/) {}
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void rotate(const RS_Vector& /*angleVector*/){}
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void rotate(const RS_Vector& /*center*/, const double& /*angle*/) override{}
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void rotate(const RS_Vector& /*center*/, const RS_Vector& /*angle*/)override{}
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void scale(const RS_Vector& /*center*/, const RS_Vector& /*factor*/)override{}
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void mirror(const RS_Vector& /*axisPoint1*/, const RS_Vector& /*axisPoint2*/)override{}
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void moveRef(const RS_Vector& /*ref*/, const RS_Vector& /*offset*/)override{}
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void draw(RS_Painter* /*painter*/, RS_GraphicView* /*view*/, double& /*patternOffset*/)override{}
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friend std::ostream& operator << (std::ostream& os, const LC_Hyperbola& a);
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//void calculateEndpoints();
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// void calculateBorders();
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//direction of tangent at endpoints
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double getDirection1() const override{return 0.;}
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double getDirection2() const override{return 0.;}
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/** return the equation of the entity
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for quadratic,
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return a vector contains:
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m0 x^2 + m1 xy + m2 y^2 + m3 x + m4 y + m5 =0
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for linear:
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m0 x + m1 y + m2 =0
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**/
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LC_Quadratic getQuadratic() const override;
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protected:
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LC_HyperbolaData data;
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bool m_bValid;
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};
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#endif
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//EOF
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