rs_line.h

qcad2.05可用于windows和linux的源码

/****************************************************************************
** $Id: rs_line.h 1907 2004-09-04 19:56:42Z andrew $
**
** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
**
** This file is part of the qcadlib Library project.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid qcadlib Professional Edition licenses may use 
** this file in accordance with the qcadlib Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.ribbonsoft.com for further details.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/


#ifndef RS_LINE_H
#define RS_LINE_H

#include "rs_atomicentity.h"

/**
 * Holds the data that defines a line.
 */
class RS_LineData {
public:
    /**
     * Default constructor. Leaves the data object uninitialized.
     */
    RS_LineData() {}

    RS_LineData(const RS_Vector& startpoint,
                const RS_Vector& endpoint) {

        this->startpoint = startpoint;
        this->endpoint = endpoint;
    }

    friend class RS_Line;
    friend class RS_ActionDrawLine;

    friend std::ostream& operator << (std::ostream& os, const RS_LineData& ld) {
        os << "(" << ld.startpoint <<
        "/" << ld.endpoint <<
        ")";
        return os;
    }

public:
    RS_Vector startpoint;
    RS_Vector endpoint;
};


/**
 * Class for a line entity.
 *
 * @author Andrew Mustun
 */
class RS_Line : public RS_AtomicEntity {
public:
    //RS_Line(RS_EntityContainer* parent);
    //RS_Line(const RS_Line& l);
    RS_Line(RS_EntityContainer* parent,
            const RS_LineData& d);

    virtual RS_Entity* clone();
    /*{
    	cout << "cloning line\n";
    	return new RS_Line(*this);
    	//RS_Entity::copy(src);
           //if (src!=NULL && src->rtti()==RS2::EntityLine) {
           //    startpoint = src->getStartpoint();
           //    endpoint = src->getEndpoint();
           //}
       }*/

    virtual ~RS_Line();

    /**	@return RS2::EntityLine */
    virtual RS2::EntityType rtti() const {
        return RS2::EntityLine;
    }
    /** @return true */
    virtual bool isEdge() const {
        return true;
    }

    /** @return Copy of data that defines the line. */
    RS_LineData getData() const {
        return data;
    }
	
    virtual RS_VectorSolutions getRefPoints();

    /** @return Start point of the entity */
    virtual RS_Vector getStartpoint() const {
        return data.startpoint;
    }
    /** @return End point of the entity */
    virtual RS_Vector getEndpoint() const {
        return data.endpoint;
    }
    /** Sets the startpoint */
    void setStartpoint(RS_Vector s) {
        data.startpoint = s;
        calculateBorders();
    }
    /** Sets the endpoint */
    void setEndpoint(RS_Vector e) {
        data.endpoint = e;
        calculateBorders();
    }
	/** 
	 * @return Direction 1. The angle at which the line starts at 
	 * the startpoint. 
	 */
	double getDirection1() const {
		return getAngle1();
	}
	/** 
	 * @return Direction 2. The angle at which the line starts at 
	 * the endpoint.
	 */
	double getDirection2() const {
		return getAngle2();
	}
	virtual void moveStartpoint(const RS_Vector& pos);
	virtual void moveEndpoint(const RS_Vector& pos);
	virtual RS2::Ending getTrimPoint(const RS_Vector& coord, 
	          const RS_Vector& trimPoint);
	virtual void reverse();
    /** @return the center point of the line. */
    RS_Vector getMiddlepoint() {
        return (data.startpoint + data.endpoint)/2.0;
    }
    /** Sets the y coordinate of the startpoint */
    void setStartpointY(double val) {
        data.startpoint.y = val;
        calculateBorders();
    }
    /** Sets the y coordinate of the endpoint */
    void setEndpointY(double val) {
        data.endpoint.y = val;
        calculateBorders();
    }
	virtual bool hasEndpointsWithinWindow(RS_Vector v1, RS_Vector v2);

    /**
     * @return The length of the line.
     */
    virtual double getLength() {
        return data.startpoint.distanceTo(data.endpoint);
    }

    /**
     * @return The angle of the line (from start to endpoint).
     */
    virtual double getAngle1() const {
        return data.startpoint.angleTo(data.endpoint);
    }

    /**
     * @return The angle of the line (from end to startpoint).
     */
    virtual double getAngle2() const {
        return data.endpoint.angleTo(data.startpoint);
    }

    virtual RS_Vector getNearestEndpoint(const RS_Vector& coord,
                                         double* dist = NULL);
    virtual RS_Vector getNearestPointOnEntity(const RS_Vector& coord,
            bool onEntity=true, double* dist = NULL, RS_Entity** entity=NULL);
    virtual RS_Vector getNearestCenter(const RS_Vector& coord,
                                       double* dist = NULL);
    virtual RS_Vector getNearestMiddle(const RS_Vector& coord,
                                       double* dist = NULL);
    virtual RS_Vector getNearestDist(double distance,
                                     const RS_Vector& coord,
                                     double* dist = NULL);
    virtual RS_Vector getNearestDist(double distance,
                                     bool startp);
    //virtual RS_Vector getNearestRef(const RS_Vector& coord,
    //                                 double* dist = NULL);
    virtual double getDistanceToPoint(const RS_Vector& coord,
                                      RS_Entity** entity=NULL,
                                      RS2::ResolveLevel level=RS2::ResolveNone,
									  double solidDist = RS_MAXDOUBLE);

    virtual void move(RS_Vector offset);
    virtual void rotate(RS_Vector center, double angle);
    virtual void scale(RS_Vector center, RS_Vector factor);
    virtual void mirror(RS_Vector axisPoint1, RS_Vector axisPoint2);
    virtual void stretch(RS_Vector firstCorner,
                         RS_Vector secondCorner,
                         RS_Vector offset);
	virtual void moveRef(const RS_Vector& ref, const RS_Vector& offset);

    virtual void draw(RS_Painter* painter, RS_GraphicView* view, double patternOffset=0.0);

    friend std::ostream& operator << (std::ostream& os, const RS_Line& l);

    virtual void calculateBorders();

protected:
    RS_LineData data;
    //RS_Vector startpoint;
    //RS_Vector endpoint;
}
;

#endif