235 lines
7.6 KiB
C++
235 lines
7.6 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) 2010 R. van Twisk (librecad@rvt.dds.nl)
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** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file gpl-2.0.txt included in the
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** packaging of this file.
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**
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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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**
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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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** This copyright notice MUST APPEAR in all copies of the script!
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**
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**********************************************************************/
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#ifndef RS_LINE_H
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#define RS_LINE_H
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#include "rs_atomicentity.h"
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class LC_Quadratic;
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/**
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* Holds the data that defines a line.
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*/
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struct RS_LineData {
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RS_LineData() :
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startpoint( false),
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endpoint( false)
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{}
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RS_LineData(const RS_Vector& point1,
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const RS_Vector& point2) :
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startpoint( point1),
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endpoint( point2)
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{}
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RS_Vector startpoint;
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RS_Vector endpoint;
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};
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std::ostream& operator << (std::ostream& os, const RS_LineData& ld);
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/**
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* Class for a line entity.
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*
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* @author Andrew Mustun
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*/
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class RS_Line : public RS_AtomicEntity {
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public:
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RS_Line() = default;
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RS_Line(RS_EntityContainer* parent,
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const RS_LineData& d);
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RS_Line(RS_EntityContainer* parent, const RS_Vector& pStart, const RS_Vector& pEnd);
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RS_Line(const RS_Vector& pStart, const RS_Vector& pEnd);
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RS_Entity* clone() const override;
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/** @return RS2::EntityLine */
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RS2::EntityType rtti() const override{
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return RS2::EntityLine;
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}
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/** @return true */
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bool isEdge() const override{
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return true;
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}
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/** @return Copy of data that defines the line. */
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RS_LineData getData() const{
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return data;
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}
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RS_VectorSolutions getRefPoints() const override;
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/** @return Start point of the entity */
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RS_Vector getStartpoint() const override{
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return data.startpoint;
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}
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/** @return End point of the entity */
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RS_Vector getEndpoint() const override{
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return data.endpoint;
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}
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/** Sets the startpoint */
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void setStartpoint(RS_Vector s) {
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data.startpoint = s;
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calculateBorders();
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}
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/** Sets the endpoint */
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void setEndpoint(RS_Vector e) {
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data.endpoint = e;
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calculateBorders();
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}
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/**
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* @return Direction 1. The angle at which the line starts at
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* the startpoint.
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*/
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double getDirection1() const override{
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return getAngle1();
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}
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/**
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* @return Direction 2. The angle at which the line starts at
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* the endpoint.
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*/
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double getDirection2() const override{
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return getAngle2();
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}
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RS_Vector getTangentDirection(const RS_Vector& point)const override;
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void moveStartpoint(const RS_Vector& pos) override;
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void moveEndpoint(const RS_Vector& pos) override;
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RS2::Ending getTrimPoint(const RS_Vector& trimCoord,
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const RS_Vector& trimPoint) override;
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RS_Vector prepareTrim(const RS_Vector& trimCoord,
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const RS_VectorSolutions& trimSol) override;
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void reverse() override;
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/** Sets the y coordinate of the startpoint */
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void setStartpointY(double val) {
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data.startpoint.y = val;
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calculateBorders();
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}
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/** Sets the y coordinate of the endpoint */
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void setEndpointY(double val) {
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data.endpoint.y = val;
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calculateBorders();
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}
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bool hasEndpointsWithinWindow(const RS_Vector& v1, const RS_Vector& v2) override;
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/**
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* @return The length of the line.
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*/
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double getLength() const override{
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return data.startpoint.distanceTo(data.endpoint);
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}
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/**
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* @return The angle of the line (from start to endpoint).
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*/
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double getAngle1() const{
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return data.startpoint.angleTo(data.endpoint);
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}
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/**
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* @return The angle of the line (from end to startpoint).
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*/
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double getAngle2() const{
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return data.endpoint.angleTo(data.startpoint);
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}
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bool isTangent(const RS_CircleData& circleData) const override;
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/**
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* @return a perpendicular vector
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*/
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RS_Vector getNormalVector() const;
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double getProjectionValueAlongLine(const RS_Vector& coord) const;
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RS_Vector getMiddlePoint() const override;
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RS_Vector getNearestEndpoint(const RS_Vector& coord,
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double* dist = nullptr) const override;
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RS_Vector getNearestPointOnEntity(const RS_Vector& coord,
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bool onEntity = true,
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double* dist = nullptr,
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RS_Entity** entity=nullptr) const override;
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//RS_Vector getPointOnEntityAlongLine(const RS_Vector& coord,const double angle,bool onEntity,double* dist,RS_Entity** entity) const;
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RS_Vector getNearestMiddle(const RS_Vector& coord,
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double* dist = nullptr,
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int middlePoints = 1) const override;
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RS_Vector getNearestDist(double distance,
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const RS_Vector& coord,
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double* dist = nullptr) const override;
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RS_Vector getNearestDist(double distance,
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bool startp) const override;
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/**
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* implementations must revert the direction of an atomic entity
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*/
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void revertDirection() override;
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std::vector<RS_Entity* > offsetTwoSides(const double& distance) const override;
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/**
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* the modify offset action
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*/
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bool offset(const RS_Vector& coord, const double& distance) 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& center, const double& angle) override;
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void rotate(const RS_Vector& center, const RS_Vector& angleVector) override;
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void scale(const RS_Vector& factor) 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 stretch(const RS_Vector& firstCorner,
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const RS_Vector& secondCorner,
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const RS_Vector& offset) override;
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void moveRef(const RS_Vector& ref, const RS_Vector& offset) override;
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/** whether the entity's bounding box intersects with visible portion of graphic view */
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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 RS_Line& l);
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void calculateBorders() override;
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/**
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* @brief getQuadratic() returns the equation of the entity
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* for quadratic,
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*
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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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*
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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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/**
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* @brief areaLineIntegral line integral for contour area calculation by Green's Theorem
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* Contour Area =\oint x dy
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* @return line integral \oint x dy along the entity
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* \oint x dy = 0.5*(x0+x1)*(y1-y0)
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*/
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double areaLineIntegral() const override;
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protected:
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RS_LineData data;
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};
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#endif
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