pointfeature.cpp

开源的电子海图程序

/* GHelm - Nautical Navigation Software
 * Copyright (C) 2004 Jon Michaelchuck
 *
 * This application is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This software 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 software; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA.
 */

#include <map>
#include <GL/gl.h>
#include <GL/glu.h>

#include "pointfeature.h"
#include "util.h"

/**
 * Constructor
 */
PointFeature::PointFeature() :
    ref_record_id(0)
{
    long_lat[0] = long_lat[1] = 0;
}

/**
 * Destructor
 */
PointFeature::~PointFeature()
{
}

/**
 * Set longitude/latitude of this point
 * @param isolated_node_vectors_map node:vector map to find point with
 * @return 0 on success -1 on failure
 */ 
int PointFeature::SetLongLat(std::map<int, IsolatedNodeVector>
                                            &isolated_node_vectors_map)
{
    sg2d_t *sg2d = isolated_node_vectors_map[ref_record_ids[0]].GetSG2DPtr();
    long_lat[0] = sg2d->long_lat[0];
    long_lat[1] = sg2d->long_lat[1];
    return 0;
}

void PointFeature::Draw(double zoom)
{
    if (cvg) {
        glPushMatrix();
            glTranslatef(long_lat[0], long_lat[1], 0);
            glScalef(1/zoom, 1/zoom, 0);
            cvg->Render();
        glPopMatrix();
    }
}