NodeInfo.h

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#pragma once
 
#include <ogdf/basic/Graph.h>
#include <ogdf/basic/List.h>
#include <ogdf/basic/basic.h>
#include <ogdf/basic/exceptions.h>
#include <ogdf/orthogonal/OrthoRep.h>
#include <ogdf/orthogonal/internal/RoutingChannel.h>
 
#include <array>
#include <cmath>
#include <iostream>
 
namespace ogdf {
class GridLayout;
 
namespace edge_router {
 
class OGDF_EXPORT NodeInfo {
public:
    //standard constr.
    NodeInfo() { init(); }
 
    void init() {
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                m_nbe[i][j] = 0;
                m_delta[i][j] = 0;
                m_eps[i][j] = 0;
                m_routable[i][j] = 0;
                m_flips[i][j] = 0;
            }
            num_s_edges[i] = 0;
            m_gen_pos[i] = -1;
            m_nbf[i] = 0;
            m_rc[i] = 0;
            m_coord[i] = 0;
            m_ccoord[i] = 0;
        }
        lu = ll = ru = rl = tl = tr = bl = br = 0;
        cage_x_size = cage_y_size = box_x_size = box_y_size = 0;
        m_vdegree = 0;
        m_firstAdj = m_adj = nullptr;
    }
 
    //Constructor, adj holds entry for inner face edge
    NodeInfo(OrthoRep& H, GridLayout& L, node v, adjEntry adj, RoutingChannel<int>& rc,
            NodeArray<int>& nw, NodeArray<int>& nh)
        : m_adj(adj) {
        init();
        get_data(H, L, v, rc, nw, nh);
    }
 
    int coord(OrthoDir bs) const { return m_coord[static_cast<int>(bs)]; }
 
    int cageCoord(OrthoDir bs) const { return m_ccoord[static_cast<int>(bs)]; }
 
    //return distance between Node and  Cage coord
    int coordDistance(OrthoDir bs) {
        int result;
        int bsi = static_cast<int>(bs);
        switch (bs) {
        case OrthoDir::South:
        case OrthoDir::East:
            result = m_ccoord[bsi] - m_coord[bsi];
            break;
        case OrthoDir::North:
        case OrthoDir::West:
            result = m_coord[bsi] - m_ccoord[bsi];
            break;
        default:
            std::cout << "unknown direction in coordDistance" << std::flush;
            OGDF_THROW(AlgorithmFailureException);
        }
        OGDF_ASSERT(result >= 0);
        return result;
    }
 
    // original box sizes, fake
    int node_xsize() const { return box_x_size; }
 
    int node_ysize() const { return box_y_size; }
 
    int nodeSize(OrthoDir od) const {
        return (static_cast<int>(od) % 2 == 0) ? box_y_size : box_x_size;
    }
 
    int cageSize(OrthoDir od) const {
        return (static_cast<int>(od) % 2 == 0) ? cage_y_size : cage_x_size;
    }
 
    int rc(OrthoDir od) const { return m_rc[static_cast<int>(od)]; }
 
    List<edge>& inList(OrthoDir bs) { return in_edges[static_cast<int>(bs)]; }
 
    List<bool>& inPoint(OrthoDir bs) { return point_in[static_cast<int>(bs)]; }
 
    //these values are computed dependant on the nodes placement
    // position of first and last unbend edge on every side
    int l_upper_unbend() { return lu; }
 
    int l_lower_unbend() { return ll; }
 
    int r_upper_unbend() { return ru; }
 
    int r_lower_unbend() { return rl; }
 
    int t_left_unbend() { return tl; }
 
    int t_right_unbend() { return tr; }
 
    int b_left_unbend() { return bl; }
 
    int b_right_unbend() { return br; }
 
    //object separation distances
    //if (no) generalization enters..., side/gener. dependant paper delta values
    //distance at side mainside, left/right from existing generalization to side neighbour
    int delta(OrthoDir mainside, OrthoDir neighbour) const {
        return m_delta[static_cast<int>(mainside)][static_cast<int>(neighbour)];
    }
 
    //paper epsilon
    int eps(OrthoDir mainside, OrthoDir neighbour) const {
        return m_eps[static_cast<int>(mainside)][static_cast<int>(neighbour)];
    }
 
    //cardinality of the set of edges that will bend, bside side to the side bneighbour
    int num_bend_edges(OrthoDir s1, OrthoDir sneighbour) {
        return m_nbe[static_cast<int>(s1)][static_cast<int>(sneighbour)];
    }
 
    //number of edges flipped from s1 to s2 to save one bend
    int& flips(OrthoDir s1, OrthoDir s2) {
        return m_flips[static_cast<int>(s1)][static_cast<int>(s2)];
    }
 
    // number of edges routed bendfree
    int num_bend_free(OrthoDir s) const { return m_nbf[static_cast<int>(s)]; }
 
    void num_bend_free_increment(OrthoDir s) { ++m_nbf[static_cast<int>(s)]; }
 
    int num_edges(OrthoDir od) const {
        return num_s_edges[static_cast<int>(od)]; //return number of edges at side od
    }
 
    //position of gen. edges in edge lists for every side, starting with 1
    int gen_pos(OrthoDir od) const { return m_gen_pos[static_cast<int>(od)]; }
 
    bool has_gen(OrthoDir od) { return m_gen_pos[static_cast<int>(od)] > -1; }
 
    bool is_in_edge(OrthoDir od, int pos) {
        ListConstIterator<bool> b_it = point_in[static_cast<int>(od)].get(pos);
        OGDF_ASSERT(b_it.valid());
        return *b_it;
    }
 
    void set_coord(OrthoDir bs, int co) { m_coord[static_cast<int>(bs)] = co; }
 
    void setCageCoord(OrthoDir bs, int co) { m_ccoord[static_cast<int>(bs)] = co; }
 
    //delta values, due to placement problems, cut to box_size / 2
    void set_delta(OrthoDir bside, OrthoDir bneighbour, int dval) {
        int bsidei = static_cast<int>(bside);
        int bneighbouri = static_cast<int>(bneighbour);
        switch (bside) {
        case OrthoDir::North:
        case OrthoDir::South:
            if (dval > box_y_size) {
                dval = int(floor(((double)box_y_size / 2))) - m_eps[bsidei][bneighbouri];
            }
            break;
        case OrthoDir::East:
        case OrthoDir::West:
            if (dval > box_x_size) {
                dval = int(floor(((double)box_x_size / 2))) - m_eps[bsidei][bneighbouri];
            }
            break;
        default:
            OGDF_ASSERT(false);
        }
        m_delta[bsidei][bneighbouri] = dval;
    }
 
    void set_eps(OrthoDir mainside, OrthoDir neighbour, int dval) {
        m_eps[static_cast<int>(mainside)][static_cast<int>(neighbour)] = dval;
    }
 
#if 0
    void set_num_bend_edges(box_side bs1, box_side bs2, int num) {nbe[bs1][bs2] = num;}
#endif
 
    void set_gen_pos(OrthoDir od, int pos) {
        m_gen_pos[static_cast<int>(od)] = pos; //odir: N 0, E 1
    }
 
    void set_num_edges(OrthoDir od, int num) {
        num_s_edges[static_cast<int>(od)] = num; //odir: N 0, E 1, check correct od parameter?
    }
 
    void compute_cage_size() {
        cage_x_size = m_ccoord[static_cast<int>(OrthoDir::South)]
                - m_ccoord[static_cast<int>(OrthoDir::North)];
        cage_y_size = m_ccoord[static_cast<int>(OrthoDir::East)]
                - m_ccoord[static_cast<int>(OrthoDir::West)];
    }
 
    //set the unbend edges after (in) placement step
    void set_l_upper(int d) { lu = d; }
 
    void set_l_lower(int d) { ll = d; }
 
    void set_r_upper(int d) { ru = d; }
 
    void set_r_lower(int d) { rl = d; }
 
    void set_t_left(int d) { tl = d; }
 
    void set_t_right(int d) { tr = d; }
 
    void set_b_left(int d) { bl = d; }
 
    void set_b_right(int d) { br = d; }
 
    //paper set E_s1_s2
    void inc_E_hook(OrthoDir s_from, OrthoDir s_to, int num = 1) {
        int s_from_i = static_cast<int>(s_from);
        int s_to_i = static_cast<int>(s_to);
        m_routable[s_from_i][s_to_i] += num;
        m_nbe[s_from_i][s_to_i] += num;
    }
 
    void inc_E(OrthoDir s_from, OrthoDir s_to, int num = 1) {
        m_nbe[static_cast<int>(s_from)][static_cast<int>(s_to)] += num;
    }
 
    //read the information for node v from attributed graph/planrep
    //(needs positions ...)
    void get_data(OrthoRep& O, GridLayout& L, node v, RoutingChannel<int>& rc, NodeArray<int>& nw,
            NodeArray<int>& nh); //check input parameter
 
    // card. of paper E^_s1,s2
    int num_routable(OrthoDir s_from, OrthoDir s_to) const {
        return m_routable[static_cast<int>(s_from)][static_cast<int>(s_to)];
    }
 
    int vDegree() { return m_vdegree; }
 
    adjEntry& firstAdj() { return m_firstAdj; }
 
    friend std::ostream& operator<<(std::ostream& O, const NodeInfo& inf);
 
private:
    std::array<int, 4> m_rc;
    std::array<int, 4> m_coord; //coordinates of box segments, x for ls_left/right, y for s_top/bottom
    std::array<int, 4> m_ccoord; //coordinates of expanded cage segments, -"-
    int cage_x_size, cage_y_size, //cage size
            box_x_size, box_y_size; //box size
    int lu, ll, ru, rl, tl, tr, bl, br; //first/last unbend edge on all sides
    //most of the following are only [4][2] but use 44 for users conv
    int m_delta[4][4]; //sepa. distance (paper delta)
    int m_eps[4][4]; //corner separation distance (paper epsilon)
    std::array<int, 4> m_gen_pos; //pos num of generaliz. edge in adj lists
    std::array<int, 4> num_s_edges; //number of edges at sides 0..3=N..W
    int m_routable[4][4]; //number of reroutable edges, paper E^_s1,s2, got to be initialized after box placement
    int m_flips[4][4]; //real number of flipped edges
    int m_nbe[4][4]; //paper E_s1,s2
    std::array<int, 4> m_nbf; //number of bendfree edges per side
    adjEntry m_firstAdj; //adjEntry of first encountered outgoing edge, note: this is a copy
 
    std::array<List<edge>, 4> in_edges; //inedges on each side will be replaced by dynamic ops
    //preliminary bugfix of in/out dilemma
    std::array<List<bool>, 4> point_in; //save in/out info
    adjEntry m_adj; //entry of inner cage face
    //degree of expanded vertex
    int m_vdegree;
};
 
std::ostream& operator<<(std::ostream& O, const NodeInfo& inf);
 
}
}