egs_gtransformed.h

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/*
###############################################################################
#
#  EGSnrc egs++ gtransformed geometry headers
#  Copyright (C) 2015 National Research Council Canada
#
#  This file is part of EGSnrc.
#
#  EGSnrc is free software: you can redistribute it and/or modify it under
#  the terms of the GNU Affero General Public License as published by the
#  Free Software Foundation, either version 3 of the License, or (at your
#  option) any later version.
#
#  EGSnrc 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 Affero General Public License for
#  more details.
#
#  You should have received a copy of the GNU Affero General Public License
#  along with EGSnrc. If not, see <http://www.gnu.org/licenses/>.
#
###############################################################################
#
#  Author:          Iwan Kawrakow, 2005
#
#  Contributors:    Frederic Tessier
#                   Reid Townson
#                   Ernesto Mainegra-Hing
#
###############################################################################
*/


#ifndef EGS_GTRANSFORMED_
#define EGS_GTRANSFORMED_

#include "egs_base_geometry.h"
#include "egs_transformations.h"

#ifdef WIN32

    #ifdef BUILD_GTRANSFORMED_DLL
        #define EGS_GTRANSFORMED_EXPORT __declspec(dllexport)
    #else
        #define EGS_GTRANSFORMED_EXPORT __declspec(dllimport)
    #endif
    #define EGS_GTRANSFORMED_LOCAL

#else

    #ifdef HAVE_VISIBILITY
        #define EGS_GTRANSFORMED_EXPORT __attribute__ ((visibility ("default")))
        #define EGS_GTRANSFORMED_LOCAL  __attribute__ ((visibility ("hidden")))
    #else
        #define EGS_GTRANSFORMED_EXPORT
        #define EGS_GTRANSFORMED_LOCAL
    #endif

#endif

class EGS_GTRANSFORMED_EXPORT EGS_TransformedGeometry :
    public EGS_BaseGeometry {

protected:

    EGS_BaseGeometry    *g;   
    EGS_AffineTransform T;    
    string              type; 

public:

    EGS_TransformedGeometry(EGS_BaseGeometry *G, const EGS_AffineTransform &t,
                            const string &Name = "") : EGS_BaseGeometry(Name), g(G), T(t) {
        type = g->getType();
        type += "T";
        nreg = g->regions();
        is_convex = g->isConvex();
        has_rho_scaling = g->hasRhoScaling();
        has_B_scaling = g->hasBScaling();
    };

    ~EGS_TransformedGeometry() {
        if (!g->deref()) {
            delete g;
        }
    };

    void setTransformation(const EGS_AffineTransform &t) {
        T = t;
    };

    int computeIntersections(int ireg, int n, const EGS_Vector &x,
                             const EGS_Vector &u, EGS_GeometryIntersections *isections) {
        EGS_Vector xt(x), ut(u);
        T.inverseTransform(xt);
        T.rotateInverse(ut);
        return g->computeIntersections(ireg,n,xt,ut,isections);
        //return g->computeIntersections(ireg,n,x*T,u*T.getRotation(),isections);
    };
    bool isRealRegion(int ireg) const {
        return g->isRealRegion(ireg);
    };
    bool isInside(const EGS_Vector &x) {
        EGS_Vector xt(x);
        T.inverseTransform(xt);
        return g->isInside(xt);
        //return g->isInside(x*T);
    };
    int isWhere(const EGS_Vector &x) {
        EGS_Vector xt(x);
        T.inverseTransform(xt);
        return g->isWhere(xt);
        //return g->isWhere(x*T);
    };
    int inside(const EGS_Vector &x) {
        return isWhere(x);
    };

    int medium(int ireg) const {
        return g->medium(ireg);
    };

    EGS_Float howfarToOutside(int ireg, const EGS_Vector &x,
                              const EGS_Vector &u) {
        return ireg >= 0 ? g->howfarToOutside(ireg,x*T,u*T.getRotation()) : 0;
    };
    int howfar(int ireg, const EGS_Vector &x, const EGS_Vector &u,
               EGS_Float &t, int *newmed=0, EGS_Vector *normal=0) {
        EGS_Vector xt(x), ut(u);
        T.inverseTransform(xt);
        T.rotateInverse(ut);
        int inew = g->howfar(ireg,xt,ut,t,newmed,normal);
        //int inew = g->howfar(ireg,x*T,u*T.getRotation(),t,newmed,normal);
        if (inew != ireg && normal) {
            *normal = T.getRotation()*(*normal);
        }
        return inew;
    };

    EGS_Float hownear(int ireg, const EGS_Vector &x) {
        EGS_Vector xt(x);
        T.inverseTransform(xt);
        return g->hownear(ireg,xt);
        //return g->hownear(ireg,x*T);
    };

    int getMaxStep() const {
        return g->getMaxStep();
    };

    // Not sure about the following.
    // If I leave the implementation that way, all transformed copies of a
    // geometry share the same boolean properties. But that may not be
    // what the user wants. So, I should implement both options:
    // all copies share the same properties and the user has the options
    // to define separate properties for each copy.
    bool hasBooleanProperty(int ireg, EGS_BPType prop) const {
        return g->hasBooleanProperty(ireg,prop);
    };
    void setBooleanProperty(EGS_BPType prop) {
        g->setBooleanProperty(prop);
    };
    void addBooleanProperty(int bit) {
        g->addBooleanProperty(bit);
    };
    void setBooleanProperty(EGS_BPType prop, int start, int end, int step=1) {
        g->setBooleanProperty(prop,start,end,step);
    };
    void addBooleanProperty(int bit, int start, int end, int step=1) {
        g->addBooleanProperty(bit,start,end,step);
    };

    const string &getType() const {
        return type;
    };

    EGS_Float getRelativeRho(int ireg) const {
        return g->getRelativeRho(ireg);
    }
    void setRelativeRho(int start, int end, EGS_Float rho);

    void setRelativeRho(EGS_Input *);

    EGS_Float getBScaling(int ireg) const {
        return g->getBScaling(ireg);
    }
    void setBScaling(int start, int end, EGS_Float bf);

    void setBScaling(EGS_Input *);

    virtual void getLabelRegions(const string &str, vector<int> &regs);

protected:

    void setMedia(EGS_Input *inp,int,const int *);

};

#endif