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/**
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* Navit, a modular navigation system.
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* Copyright (C) 2005-2008 Navit Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <math.h>
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#include <stdio.h>
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#include <glib.h>
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#include "point.h"
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#include "coord.h"
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#include "graphics.h"
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#include "transform.h"
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#include "item.h"
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#include "route.h"
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#include "vehicle.h"
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#include "navit.h"
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#include "compass.h"
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#if 0
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struct compass {
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struct graphics *gr;
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struct graphics_gc *bg;
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struct graphics_gc *white;
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struct graphics_gc *green;
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struct graphics_font *font;
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};
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static void
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transform_rotate(struct point *center, int angle, struct point *p, int count)
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{
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int i,x,y;
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double dx,dy;
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for (i = 0 ; i < count ; i++)
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{
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dx=sin(M_PI*angle/180.0);
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dy=cos(M_PI*angle/180.0);
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x=dy*p->x-dx*p->y;
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y=dx*p->x+dy*p->y;
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p->x=center->x+x;
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p->y=center->y+y;
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p++;
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}
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}
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static void
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handle(struct graphics *gr, struct graphics_gc *gc, struct point *p, int r, int dir)
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{
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struct point ph[3];
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int l=r*0.4;
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ph[0].x=0;
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ph[0].y=r;
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ph[1].x=0;
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ph[1].y=-r;
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transform_rotate(p, dir, ph, 2);
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gr->draw_lines(gr, gc, ph, 2);
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ph[0].x=-l;
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ph[0].y=-r+l;
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ph[1].x=0;
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ph[1].y=-r;
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ph[2].x=l;
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ph[2].y=-r+l;
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transform_rotate(p, dir, ph, 3);
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gr->draw_lines(gr, gc, ph, 3);
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}
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void
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compass_draw(struct compass *comp, struct container *co)
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{
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struct point p;
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struct coord *pos, *dest;
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double *vehicle_dir,dir,distance;
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int dx,dy;
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char buffer[16];
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if (! co->vehicle)
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return;
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vehicle_dir=vehicle_dir_get(co->vehicle);
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comp->gr->draw_mode(comp->gr, draw_mode_begin);
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p.x=0;
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p.y=0;
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comp->gr->draw_rectangle(comp->gr, comp->bg, &p, 60, 80);
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p.x=30;
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p.y=30;
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comp->gr->draw_circle(comp->gr, comp->white, &p, 50);
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if (co->flags->orient_north)
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handle(comp->gr,comp->white, &p, 20,0);
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else
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handle(comp->gr, comp->white, &p, 20, -*vehicle_dir);
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#if 0 /* FIXME */
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dest=route_get_destination(co->route);
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if (dest) {
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pos=vehicle_pos_get(co->vehicle);
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dx=dest->x-pos->x;
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dy=dest->y-pos->y;
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dir=atan2(dx,dy)*180.0/M_PI;
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#if 0
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printf("dx %d dy %d dir=%f vehicle_dir=%f\n", dx, dy, dir, *vehicle_dir);
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#endif
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if (! co->flags->orient_north)
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dir-=*vehicle_dir;
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handle(comp->gr, comp->green, &p, 20, dir);
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p.x=8;
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p.y=72;
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distance=transform_distance(projection_mg, pos, dest)/1000.0;
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if (distance >= 100)
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sprintf(buffer,"%.0f km", distance);
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else if (distance >= 10)
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sprintf(buffer,"%.1f km", distance);
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else
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sprintf(buffer,"%.2f km", distance);
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comp->gr->draw_text(comp->gr, comp->green, NULL, comp->font, buffer, &p, 0x10000, 0);
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}
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#endif
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comp->gr->draw_mode(comp->gr, draw_mode_end);
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}
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struct compass *
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compass_new(struct container *co)
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{
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struct compass *this=g_new0(struct compass, 1);
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struct point p;
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p.x=10;
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p.y=10;
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this->gr=co->gra->overlay_new(co->gra, &p, 60, 80);
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this->bg=this->gr->gc_new(this->gr);
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this->gr->gc_set_foreground(this->bg, 0, 0, 0);
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this->white=this->gr->gc_new(this->gr);
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this->gr->gc_set_foreground(this->white, 0xffff, 0xffff, 0xffff);
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this->gr->gc_set_linewidth(this->white, 2);
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this->green=this->gr->gc_new(this->gr);
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this->gr->gc_set_foreground(this->green, 0x0, 0xffff, 0x0);
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this->gr->gc_set_linewidth(this->green, 2);
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this->font=this->gr->font_new(this->gr, 200);
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compass_draw(this, co);
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return this;
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}
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#endif
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