/**************************************************************************** ** ** 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_ARC_H #define RS_ARC_H #include "rs_atomicentity.h" /** * Holds the data that defines an arc. */ class RS_ArcData { public: RS_ArcData() {} RS_ArcData(const RS_Vector& center, double radius, double angle1, double angle2, bool reversed) { this->center = center; this->radius = radius; this->angle1 = angle1; this->angle2 = angle2; this->reversed = reversed; } void reset() { center = RS_Vector(false); radius = 0.0; angle1 = 0.0; angle2 = 0.0; reversed = false; } bool isValid() { return (center.valid && radius>RS_TOLERANCE && fabs(angle1-angle2)>RS_TOLERANCE_ANGLE); } friend std::ostream& operator << (std::ostream& os, const RS_ArcData& ad) { os << "(" << ad.center << "/" << ad.radius << " " << ad.angle1 << "," << ad.angle2 << ")"; return os; } public: RS_Vector center; double radius; double angle1; double angle2; bool reversed; }; /** * Class for an arc entity. All angles are in Rad. * * @author Andrew Mustun */ class RS_Arc : public RS_AtomicEntity { public: RS_Arc(RS_EntityContainer* parent, const RS_ArcData& d); virtual ~RS_Arc() {} virtual RS_Entity* clone() { RS_Arc* a = new RS_Arc(*this); a->initId(); return a; } /** @return RS2::EntityArc */ virtual RS2::EntityType rtti() const { return RS2::EntityArc; } /** @return true */ virtual bool isEdge() const { return true; } /** @return Copy of data that defines the arc. **/ RS_ArcData getData() const { return data; } virtual RS_VectorSolutions getRefPoints(); /** Sets new arc parameters. **/ void setData(RS_ArcData d) { data = d; } /** @return The center point (x) of this arc */ virtual RS_Vector getCenter() const { return data.center; } /** Sets new center. */ void setCenter(const RS_Vector& c) { data.center = c; } /** @return The radius of this arc */ virtual double getRadius() const { return data.radius; } /** Sets new radius. */ void setRadius(double r) { data.radius = r; } /** @return The start angle of this arc */ double getAngle1() const { return data.angle1; } /** Sets new start angle. */ void setAngle1(double a1) { data.angle1 = a1; } /** @return The end angle of this arc */ double getAngle2() const { return data.angle2; } /** Sets new end angle. */ void setAngle2(double a2) { data.angle2 = a2; } /** * @return Direction 1. The angle at which the arc starts at * the startpoint. */ double getDirection1() const { if (!data.reversed) { return RS_Math::correctAngle(data.angle1+M_PI/2.0); } else { return RS_Math::correctAngle(data.angle1-M_PI/2.0); } } /** * @return Direction 2. The angle at which the arc starts at * the endpoint. */ double getDirection2() const { if (!data.reversed) { return RS_Math::correctAngle(data.angle2-M_PI/2.0); } else { return RS_Math::correctAngle(data.angle2+M_PI/2.0); } } /** * @retval true if the arc is reversed (clockwise), * @retval false otherwise */ bool isReversed() const { return data.reversed; } /** sets the reversed status. */ void setReversed(bool r) { data.reversed = r; } /** @return Start point of the entity. */ virtual RS_Vector getStartpoint() const { return startpoint; } /** @return End point of the entity. */ virtual RS_Vector getEndpoint() const { return endpoint; } /** * implementations must revert the direction of an atomic entity */ virtual void revertDirection(); virtual void correctAngles();//make sure angleLength() is not more than 2*M_PI virtual void moveStartpoint(const RS_Vector& pos); virtual void moveEndpoint(const RS_Vector& pos); virtual bool offset(const RS_Vector& position, const double& distance); virtual void trimStartpoint(const RS_Vector& pos); virtual void trimEndpoint(const RS_Vector& pos); virtual RS2::Ending getTrimPoint(const RS_Vector& coord, const RS_Vector& trimPoint); virtual RS_Vector prepareTrim(const RS_Vector& coord, const RS_VectorSolutions& trimSol); virtual void reverse(); virtual RS_Vector getMiddlePoint() const; double getAngleLength() const; virtual double getLength() const; double getBulge() const; bool createFrom3P(const RS_Vector& p1, const RS_Vector& p2, const RS_Vector& p3); bool createFrom2PDirectionRadius(const RS_Vector& startPoint, const RS_Vector& endPoint, double direction1, double radius); bool createFrom2PDirectionAngle(const RS_Vector& startPoint, const RS_Vector& endPoint, double direction1, double angleLength); bool createFrom2PBulge(const RS_Vector& startPoint, const RS_Vector& endPoint, double bulge); virtual RS_Vector getNearestEndpoint(const RS_Vector& coord, double* dist = NULL)const; virtual RS_Vector getNearestPointOnEntity(const RS_Vector& coord, bool onEntity = true, double* dist = NULL, RS_Entity** entity=NULL)const; virtual RS_Vector getNearestCenter(const RS_Vector& coord, double* dist = NULL); virtual RS_Vector getNearestMiddle(const RS_Vector& coord, double* dist = NULL, int middlePoints = 1 )const; virtual RS_Vector getNearestDist(double distance, const RS_Vector& coord, double* dist = NULL); virtual RS_Vector getNearestDist(double distance, bool startp); virtual RS_Vector getNearestOrthTan(const RS_Vector& coord, const RS_Line& normal, bool onEntity = false); virtual RS_VectorSolutions getTangentPoint(const RS_Vector& point) const;//find the tangential points seeing from given point virtual RS_Vector getTangentDirection(const RS_Vector& point)const; virtual double getDistanceToPoint(const RS_Vector& coord, RS_Entity** entity=NULL, RS2::ResolveLevel level=RS2::ResolveNone, double solidDist = RS_MAXDOUBLE) const; virtual void move(const RS_Vector& offset); virtual void rotate(const RS_Vector& center, const double& angle); virtual void rotate(const RS_Vector& center, const RS_Vector& angleVector); virtual void scale(const RS_Vector& center, const RS_Vector& factor); virtual void mirror(const RS_Vector& axisPoint1, const RS_Vector& axisPoint2); virtual void moveRef(const RS_Vector& ref, const RS_Vector& offset); virtual void stretch(const RS_Vector& firstCorner, const RS_Vector& secondCorner, const RS_Vector& offset); virtual void draw(RS_Painter* painter, RS_GraphicView* view, double& patternOffset); friend std::ostream& operator << (std::ostream& os, const RS_Arc& a); virtual void calculateEndpoints(); virtual void calculateBorders(); protected: RS_ArcData data; /** * Startpoint. This is redundant but stored for performance * reasons. */ RS_Vector startpoint; /** * Endpoint. This is redundant but stored for performance * reasons. */ RS_Vector endpoint; }; #endif