Esempio n. 1
0
/** @return the nearest of equidistant middle points of the line. */
RS_Vector RS_Line::getNearestMiddle(const RS_Vector& coord,
                                        double* dist,
                                        int middlePoints
                                        )const 
{
//        RS_DEBUG->print("RS_Line::getNearestMiddle(): begin\n");
        RS_Vector dvp(getEndpoint() - getStartpoint());
        double l=dvp.magnitude();
        if( l<= RS_TOLERANCE) {
            //line too short
            return const_cast<RS_Line*>(this)->getNearestCenter(coord, dist);   /* ?????? */
        }
        RS_Vector vp0(getNearestPointOnEntity(coord,true,dist));
        int counts=middlePoints+1;
        int i( static_cast<int>(vp0.distanceTo(getStartpoint())/l*counts+0.5));
        if(!i) i++; // remove end points
        if(i==counts) i--;
        vp0=getStartpoint() + dvp*(double(i)/double(counts));

        if(dist != NULL) {
            *dist=vp0.distanceTo(coord);
        }
   
   //std::cout << "rs_line.cpp Dist " << *dist << "\n";
   
   
//        RS_DEBUG->print("RS_Line::getNearestMiddle(): end\n");
        return vp0;
}
Esempio n. 2
0
    /** @return the nearest of equidistant middle points of the line. */
    RS_Vector RS_Line::getNearestMiddle(const RS_Vector& coord,
                                        double* dist,
                                        int middlePoints
                                        ) {
        RS_DEBUG->print("RS_Line::getNearestMiddle(): begin\n");
        RS_Vector dvp(getEndpoint() - getStartpoint());
        double l=dvp.magnitude();
        if( l<= RS_TOLERANCE) {
            //line too short
            RS_Vector vp(getStartpoint() + dvp*0.5);
            if (dist != NULL) {
                *dist=vp.distanceTo(coord);
            }
            return vp;
        }
        RS_Vector vp0(getNearestPointOnEntity(coord,true,dist));
        int counts=middlePoints+1;
        int i( static_cast<int>(vp0.distanceTo(getStartpoint())/l*counts+0.5));
        if(!i) i++; // remove end points
        if(i==counts) i--;
        vp0=getStartpoint() + dvp*(double(i)/double(counts));

        if(dist != NULL) {
            *dist=vp0.distanceTo(coord);
        }
        RS_DEBUG->print("RS_Line::getNearestMiddle(): end\n");
        return vp0;
    }
Esempio n. 3
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/**
 * @todo Implement this.
 */
double RS_Ellipse::getDistanceToPoint(const RS_Vector& coord,
                                      RS_Entity** entity,
                                      RS2::ResolveLevel, double /*solidDist*/) {
    double dist = RS_MAXDOUBLE;
    getNearestPointOnEntity(coord, true, &dist, entity);

    return dist;
}
Esempio n. 4
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double RS_Ellipse::getDistanceToPoint(const RS_Vector& coord,
                                      RS_Entity** entity,
                                      RS2::ResolveLevel, double /*solidDist*/) {
    double dToEntity = RS_MAXDOUBLE;
    getNearestPointOnEntity(coord, true, &dToEntity, entity);

    // RVT 6 Jan 2011 : Add selection by center point
    double dToCenter=data.center.distanceTo(coord);
    return std::min(dToEntity,dToCenter);
}
Esempio n. 5
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/**
 * @return Distance from one of the boundry lines of this solid to given point.
 *
 */
double RS_Solid::getDistanceToPoint(const RS_Vector& coord,
                                    RS_Entity** entity,
                                    RS2::ResolveLevel /*level*/,
                                    double /*solidDist*/)const {
	if (entity!=nullptr) {
        *entity = const_cast<RS_Solid*>(this);
    }
    double ret;
    getNearestPointOnEntity(coord,true,&ret,entity);
    return ret;
}
Esempio n. 6
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double RS_Entity::getDistanceToPoint(const RS_Vector& coord,
                                  RS_Entity** entity,
                                  RS2::ResolveLevel /*level*/,
                                  double /*solidDist*/) const
{
	if (entity) {
        *entity=const_cast<RS_Entity*>(this);
    }
    double dToEntity = RS_MAXDOUBLE;
    (void) getNearestPointOnEntity(coord, true, &dToEntity, entity);

    // RVT 6 Jan 2011 : Add selection by center point
    if(getCenter().valid){
        double dToCenter=getCenter().distanceTo(coord);
        return std::min(dToEntity,dToCenter);
    }else
        return dToEntity;
}
Esempio n. 7
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/**
 * @brief compute middlePoints for each quadrant of a circle
 *
 * 0 middlePoints snaps to axis intersection at 0, 90, 180 and 270 degree (getNearestEndpoint) \n
 * 1 middlePoints snaps to 45, 135, 225 and 315 degree \n
 * 2 middlePoints snaps to 30, 60, 120, 150, 210, 240, 300 and 330 degree \n
 * and so on
 *
 * @param coord coordinates to compute, e.g. mouse cursor position
 * @param dist double pointer to return distance between mouse pointer and nearest entity point
 * @param middlePoints number of middle points to compute per quadrant (0 for endpoints)
 * @return the nearest of equidistant middle points of the circles quadrants.
 */
RS_Vector RS_Circle::getNearestMiddle(const RS_Vector& coord,
                                      double* dist /*= nullptr*/,
                                      const int middlePoints /*= 1*/) const
{
	if( data.radius <= RS_TOLERANCE) {
        //circle too short
        if ( nullptr != dist) {
            *dist = RS_MAXDOUBLE;
        }
        return RS_Vector(false);
    }

    RS_Vector vPoint( getNearestPointOnEntity( coord, true, dist));
    int iCounts = middlePoints + 1;
	double dAngleSteps = M_PI_2 / iCounts;
	double dAngleToPoint = data.center.angleTo(vPoint);
    int iStepCount = static_cast<int>((dAngleToPoint + 0.5 * dAngleSteps) / dAngleSteps);
    if( 0 < middlePoints) {
        // for nearest middle eliminate start/endpoints
        int iQuadrant = static_cast<int>(dAngleToPoint / 0.5 / M_PI);
        int iQuadrantStep = iStepCount - iQuadrant * iCounts;
        if( 0 == iQuadrantStep) {
            ++iStepCount;
        }
        else if( iCounts == iQuadrantStep) {
            --iStepCount;
        }
    }

	vPoint.setPolar( data.radius, dAngleSteps * iStepCount);
	vPoint.move( data.center);

	if(dist) {
        *dist = vPoint.distanceTo( coord);
    }

    return vPoint;
}
Esempio n. 8
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bool RS_Line::isTangent(const RS_CircleData&  circleData){
    double d;
    getNearestPointOnEntity(circleData.center,false,&d);
    if(fabs(d-circleData.radius)<RS_TOLERANCE) return true;
    return false;
}
Esempio n. 9
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double RS_Line::getDistanceToPoint(const RS_Vector& coord,
                                   RS_Entity** entity,
                                   RS2::ResolveLevel /*level*/,
                                   double /*solidDist*/)const {

//    RS_DEBUG->print("RS_Line::getDistanceToPoint");

    if (entity!=NULL) {
        *entity = const_cast<RS_Line*>(this);
    }
    double ret;
    getNearestPointOnEntity(coord,true,&ret,entity);
    //std::cout<<"rs_line::getDistanceToPoint(): new algorithm dist= "<<ret<<std::endl;
    return ret;
//    // check endpoints first:
//    double dist = coord.distanceTo(getStartpoint());
//    if (dist<1.0e-4) {
//        RS_DEBUG->print("RS_Line::getDistanceToPoint: OK1");
//        return dist;
//    }
//    dist = coord.distanceTo(getEndpoint());
//    if (dist<1.0e-4) {
//        RS_DEBUG->print("RS_Line::getDistanceToPoint: OK2");
//        return dist;
//    }
//
//    dist = RS_MAXDOUBLE;
//    RS_Vector ae = data.endpoint-data.startpoint;
//    RS_Vector ea = data.startpoint-data.endpoint;
//    RS_Vector ap = coord-data.startpoint;
//    RS_Vector ep = coord-data.endpoint;
//
//    if (ae.magnitude()<1.0e-6 || ea.magnitude()<1.0e-6) {
//        RS_DEBUG->print("RS_Line::getDistanceToPoint: OK2a");
//        return dist;
//    }
//
//    // Orthogonal projection from both sides:
//    RS_Vector ba = ae * RS_Vector::dotP(ae, ap) /
//                   RS_Math::pow(ae.magnitude(), 2);
//    RS_Vector be = ea * RS_Vector::dotP(ea, ep) /
//                   RS_Math::pow(ea.magnitude(), 2);
//
//    // Check if the projection is outside this line:
//    if (ba.magnitude()>ae.magnitude() || be.magnitude()>ea.magnitude()) {
//        // return distance to endpoint
//        getNearestEndpoint(coord, &dist);
//        RS_DEBUG->print("RS_Line::getDistanceToPoint: OK3");
//        return dist;
//    }
//    //RS_DEBUG->print("ba: %f", ba.magnitude());
//    //RS_DEBUG->print("ae: %f", ae.magnitude());
//
//    RS_Vector cp = RS_Vector::crossP(ap, ae);
//    dist = cp.magnitude() / ae.magnitude();
//
//    RS_DEBUG->print("RS_Line::getDistanceToPoint: OK4");
//    std::cout<<"rs_line::getDistanceToPoint(): Old algorithm dist= "<<ret<<std::endl;
//
//    return dist;
}