Geografic-Information-System/display/d.zoom/returns.c

#include <grass/display.h>
#include "graphics.h"
#include <stdio.h>
#define GETEM	if (notgotem) getem()
static int notgotem = 1;
static int wind_top;
static int wind_bot;
static int wind_rite;
static int wind_left;
static int getem(void);

int get_wind_bot(void)
{
    GETEM;
    return (wind_bot);
}

int get_wind_top(void)
{
    GETEM;
    return (wind_top);
}

int get_wind_rite(void)
{
    GETEM;
    return (wind_rite);
}

int get_wind_left(void)
{
    GETEM;
    return (wind_left);
}

int get_map_bot(void)
{
    GETEM;
    return (wind_bot);
}

int get_map_top(void)
{
    register float tmp1, tmp2, tmp3;

    GETEM;
    if (notgotem) {
	getem();
	notgotem = 0;
    }
    tmp1 = (float)wind_bot;
    tmp2 = (float)wind_top;
    tmp3 = tmp1 + WINDOW_PROP_SCREEN_Y * (tmp2 - tmp1);
    return ((int)tmp3);
}

int get_map_left(void)
{
    register float tmp1, tmp2, tmp3;

    GETEM;
    tmp1 = (float)wind_left;
    tmp2 = (float)wind_rite;
    tmp3 = tmp2 - WINDOW_PROP_SCREEN_X * (tmp2 - tmp1);
    return ((int)tmp3);
}

int get_map_rite(void)
{
    GETEM;
    return (wind_rite);
}

int get_wind_y_pos(float position)
{
    register float tmp1, tmp2, tmp3;

    GETEM;
    tmp1 = (float)wind_top;
    tmp2 = (float)wind_bot;
    tmp3 = tmp1 + position * (tmp2 - tmp1);
    return ((int)tmp3);
}

int get_wind_x_pos(float position)
{
    register float tmp1, tmp2, tmp3;

    GETEM;
    tmp1 = (float)wind_left;
    tmp2 = (float)wind_rite;
    tmp3 = tmp1 + position * (tmp2 - tmp1);
    return ((int)tmp3);
}

static int getem(void)
{
    D_get_screen_window(&wind_top, &wind_bot, &wind_left, &wind_rite);
    notgotem = 0;

    return 0;
}