/**************************************************************************** ** ** This file is part of the LibreCAD project, a 2D CAD program ** ** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl) ** Copyright (C) 2001-2003 RibbonSoft. All rights reserved. ** ** ** 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 gpl-2.0.txt included in the ** packaging of this file. ** ** This program 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 this program; if not, write to the Free Software ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ** ** This copyright notice MUST APPEAR in all copies of the script! ** **********************************************************************/ #ifndef RS_LINE_H #define RS_LINE_H #include "rs_atomicentity.h" class LC_Quadratic; /** * Holds the data that defines a line. */ struct RS_LineData { RS_LineData() : startpoint( false), endpoint( false) {} RS_LineData(const RS_Vector& point1, const RS_Vector& point2) : startpoint( point1), endpoint( point2) {} RS_Vector startpoint; RS_Vector endpoint; }; std::ostream& operator << (std::ostream& os, const RS_LineData& ld); /** * Class for a line entity. * * @author Andrew Mustun */ class RS_Line : public RS_AtomicEntity { public: RS_Line() = default; RS_Line(RS_EntityContainer* parent, const RS_LineData& d); RS_Line(RS_EntityContainer* parent, const RS_Vector& pStart, const RS_Vector& pEnd); RS_Line(const RS_Vector& pStart, const RS_Vector& pEnd); RS_Entity* clone() const override; /** @return RS2::EntityLine */ RS2::EntityType rtti() const override{ return RS2::EntityLine; } /** @return true */ bool isEdge() const override{ return true; } /** @return Copy of data that defines the line. */ RS_LineData getData() const{ return data; } RS_VectorSolutions getRefPoints() const override; /** @return Start point of the entity */ RS_Vector getStartpoint() const override{ return data.startpoint; } /** @return End point of the entity */ RS_Vector getEndpoint() const override{ 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 override{ return getAngle1(); } /** * @return Direction 2. The angle at which the line starts at * the endpoint. */ double getDirection2() const override{ return getAngle2(); } RS_Vector getTangentDirection(const RS_Vector& point)const override; void moveStartpoint(const RS_Vector& pos) override; void moveEndpoint(const RS_Vector& pos) override; RS2::Ending getTrimPoint(const RS_Vector& trimCoord, const RS_Vector& trimPoint) override; RS_Vector prepareTrim(const RS_Vector& trimCoord, const RS_VectorSolutions& trimSol) override; void reverse() override; /** 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(); } bool hasEndpointsWithinWindow(const RS_Vector& v1, const RS_Vector& v2) override; /** * @return The length of the line. */ double getLength() const override{ return data.startpoint.distanceTo(data.endpoint); } /** * @return The angle of the line (from start to endpoint). */ double getAngle1() const{ return data.startpoint.angleTo(data.endpoint); } /** * @return The angle of the line (from end to startpoint). */ double getAngle2() const{ return data.endpoint.angleTo(data.startpoint); } bool isTangent(const RS_CircleData& circleData) const override; /** * @return a perpendicular vector */ RS_Vector getNormalVector() const; double getProjectionValueAlongLine(const RS_Vector& coord) const; RS_Vector getMiddlePoint() const override; RS_Vector getNearestEndpoint(const RS_Vector& coord, double* dist = nullptr) const override; RS_Vector getNearestPointOnEntity(const RS_Vector& coord, bool onEntity = true, double* dist = nullptr, RS_Entity** entity=nullptr) const override; //RS_Vector getPointOnEntityAlongLine(const RS_Vector& coord,const double angle,bool onEntity,double* dist,RS_Entity** entity) const; RS_Vector getNearestMiddle(const RS_Vector& coord, double* dist = nullptr, int middlePoints = 1) const override; RS_Vector getNearestDist(double distance, const RS_Vector& coord, double* dist = nullptr) const override; RS_Vector getNearestDist(double distance, bool startp) const override; /** * implementations must revert the direction of an atomic entity */ void revertDirection() override; std::vector offsetTwoSides(const double& distance) const override; /** * the modify offset action */ bool offset(const RS_Vector& coord, const double& distance) override; void move(const RS_Vector& offset) override; void rotate(const double& angle); void rotate(const RS_Vector& center, const double& angle) override; void rotate(const RS_Vector& center, const RS_Vector& angleVector) override; void scale(const RS_Vector& factor) override; void scale(const RS_Vector& center, const RS_Vector& factor) override; void mirror(const RS_Vector& axisPoint1, const RS_Vector& axisPoint2) override; void stretch(const RS_Vector& firstCorner, const RS_Vector& secondCorner, const RS_Vector& offset) override; void moveRef(const RS_Vector& ref, const RS_Vector& offset) override; /** whether the entity's bounding box intersects with visible portion of graphic view */ void draw(RS_Painter* painter, RS_GraphicView* view, double& patternOffset) override; friend std::ostream& operator << (std::ostream& os, const RS_Line& l); void calculateBorders() override; /** * @brief getQuadratic() returns the equation of the entity * for quadratic, * * return a vector contains: * m0 x^2 + m1 xy + m2 y^2 + m3 x + m4 y + m5 =0 * * for linear: * m0 x + m1 y + m2 =0 */ LC_Quadratic getQuadratic() const override; /** * @brief areaLineIntegral line integral for contour area calculation by Green's Theorem * Contour Area =\oint x dy * @return line integral \oint x dy along the entity * \oint x dy = 0.5*(x0+x1)*(y1-y0) */ double areaLineIntegral() const override; protected: RS_LineData data; }; #endif