int Downarrow(int top, int bottom, int left, int right)
{
R_move_abs((left + right) / 2, top);
R_cont_abs((left + right) / 2, bottom);
R_cont_rel((left - right) / 2, (top - bottom) / 2);
R_move_abs((left + right) / 2, bottom);
R_cont_rel((right - left) / 2, (top - bottom) / 2);
return 0;
}
/* FOR STRATIFIED RANDOM DISTRIBUTION, DRAW THE STRATA ON THE SCREEN */
static void draw_grid(int l, int t, int w_w, int w_l, int h_d, int v_d,
int starty, int startx, double colratio,
double rowratio)
{
int j, k, l0, t0, itmp, dx, dy, initl, tmp;
/* VARIABLES:
k = the remainder after dividing the screen width/height
by the number of strata
dx = how many screen cols per stratum
dy = how many screen rows per stratum
l0 = left side of screen + dx
t0 = top of screen + dy
w_w = width of screen
w_l = height of screen
h_d = number of horizontal strata
v_d = number of vertical strata
*/
R_open_driver();
R_standard_color(D_translate_color("orange"));
if (startx > 0) {
dx = (int)((double)((int)(colratio *
((int)
((double)(w_w - startx) /
(double)(h_d)))) / colratio + 0.5));
l0 = l + startx;
}
else {
dx = (int)((double)((int)(colratio *
((int)((double)(w_w) / (double)(h_d)))) /
colratio + 0.5));
l0 = l;
}
if (starty > 0) {
dy = (int)((double)((int)(rowratio *
((int)
((double)(w_l - starty) /
(double)(v_d)))) / rowratio + 0.5));
t0 = t + starty;
}
else {
dy = (int)((double)((int)(rowratio *
((int)((double)(w_l) / (double)(v_d)))) /
rowratio + 0.5));
t0 = t;
}
initl = l0;
/* draw the vertical strata */
for (j = 1; j <= h_d - 1; j++) {
l0 += dx;
R_move_abs(l0, t0);
R_cont_rel(0, w_l - starty);
}
/* draw the horizontal strata */
for (j = 1; j <= v_d - 1; j++) {
t0 += dy;
R_move_abs(initl, t0);
R_cont_rel(w_w - startx, 0);
}
R_close_driver();
return;
}
int draw_scale(char *save, int toptext, int size)
{
double meters;
double line_len;
int incr;
int x_pos, y_pos;
int t, b, l, r;
int pt, pb, pl, pr;
int i;
int xarr[5], yarr[5];
double seg_len;
const struct scale *scales = all_scales[use_feet];
/* Establish text size */
D_get_screen_window(&t, &b, &l, &r);
R_set_window(t, b, l, r);
R_text_size(size, size);
x_pos = (int)(east * (r - l) / 100.);
y_pos = (int)(north * (b - t) / 100.);
if (draw == 1) {
int w, h;
w = 30;
h = 17 + 2 * w;
pl = x_pos;
pt = y_pos;
pr = x_pos + w + 2; /* 1 pixel margin for both sides */
pb = y_pos + h + 2; /* 1 pixel margin for both sides */
if (save)
R_panel_save(save, pt, pb, pl, pr);
if (do_background) {
D_raster_use_color(color1);
R_box_abs(pl, pt, pr, pb);
}
/* Draw legend */
D_raster_use_color(color2);
R_move_abs(pl + w / 2 + 1, pt + 17 + 1);
xarr[0] = 0;
yarr[0] = 0;
xarr[1] = -w / 2;
yarr[1] = 2 * w;
xarr[2] = w / 2;
yarr[2] = -w / 2;
xarr[3] = 0;
yarr[3] = -1.5 * w;
R_polyline_rel(xarr, yarr, 4);
xarr[1] = -xarr[1];
xarr[2] = -xarr[2];
R_polygon_rel(xarr, yarr, 4);
/* actual text width is 81% of size? from d.legend */
R_move_abs((int)(pl + w / 2 - 7 * .81), pt + 14);
R_text("N");
R_stabilize();
return 0;
}
meters = D_get_u_east() - D_get_u_west();
meters *= G_database_units_to_meters_factor();
/* find the right scale */
for (incr = 0; incr < NUMSCALES; incr++) {
if (meters <= scales[incr].limit)
break;
}
if (!incr)
return (-1);
/* beyond the maximum just make the longest scale narrower */
if (incr >= NUMSCALES)
incr = NUMSCALES - 1;
line_len = D_get_u_to_d_xconv() * scales[incr].size
/ G_database_units_to_meters_factor();
seg_len = line_len / scales[incr].seg;
/* work around round off */
line_len = ((int)seg_len) * scales[incr].seg;
/* Blank out area with background color */
if (toptext) {
pr = x_pos + 35 + (int)line_len;
pt = y_pos - 15;
if (pt < t)
pt = t;
}
else {
pr = x_pos + 35 + (int)line_len + size * strlen(scales[incr].name);
pt = y_pos + 0;
if (pt < t)
pt = t;
}
pb = y_pos + 30;
if (pb > b)
pb = b;
pl = x_pos + 0;
if (pl < l)
pl = l;
pr = pr;
if (pr > r)
pr = r;
if (save)
R_panel_save(save, pt, pb, pl, pr);
if (do_background) {
D_raster_use_color(color1);
R_box_abs(pl, pt, pr, pb);
}
/* Draw legend */
D_raster_use_color(color2);
if (draw != 2) {
R_move_abs(x_pos + 5, y_pos + 20);
R_cont_rel(0, -10);
R_cont_rel(10, 10);
R_cont_rel(0, -10);
R_move_rel(-5, 14);
R_cont_rel(0, -17);
R_cont_rel(-2, -0);
R_cont_rel(2, -2);
R_cont_rel(2, 2);
R_cont_rel(-2, -0);
}
if (draw == 2) {
R_move_abs(x_pos + 25 - draw * 10, y_pos + 17);
/* actual width is line_len-1+1=line_len and height is 7+1=8 */
R_cont_rel((int)line_len - 1, 0);
R_cont_rel(0, -7);
R_cont_rel((int)(line_len * -1 + 1), 0);
R_cont_rel(0, 7);
R_move_rel(0, 1 - 4);
for (i = 1; i <= scales[incr].seg; i++) {
xarr[0] = 0;
yarr[0] = 0;
xarr[1] = (int)seg_len;
yarr[1] = 0;
xarr[2] = 0;
yarr[2] = (i % 2 ? -4 : 4);
xarr[3] = (int)-seg_len;
yarr[3] = 0;
xarr[4] = 0;
yarr[4] = (i % 2 ? 4 : -4);
/* width is seg_len and height is 4 */
R_polygon_rel(xarr, yarr, 4);
R_move_rel((int)seg_len, 0);
}
}
else if (do_bar) {
R_move_abs(x_pos + 25, y_pos + 17);
/* actual width is line_len-1+1=line_len and height is 4+1=5 */
R_cont_rel((int)line_len - 1, 0);
R_cont_rel(0, -4);
R_cont_rel((int)(line_len * -1 + 1), 0);
R_cont_rel(0, 4);
R_move_rel(0, 1);
for (i = 1; i <= scales[incr].seg; i += 2) {
/* width is seg_len and height is 5 */
R_box_rel((int)seg_len, -5);
R_move_rel((int)(seg_len * 2), 0);
}
}
else { /* draw simple line scale */
R_move_abs(x_pos + 25, y_pos + 5);
R_cont_abs(x_pos + 25, y_pos + 25);
R_move_abs(x_pos + 25, y_pos + 15);
R_cont_abs(x_pos + 25 + (int)line_len, y_pos + 15);
R_move_abs(x_pos + 25 + (int)line_len, y_pos + 5);
R_cont_abs(x_pos + 25 + (int)line_len, y_pos + 25);
}
if (toptext) {
R_move_abs(x_pos + 25 - draw * 10 +
(int)(line_len / 2. -
strlen(scales[incr].name) * size * 0.81 / 2), y_pos);
R_text(scales[incr].name);
}
else {
R_move_abs(x_pos + 35 - draw * 10 + (int)line_len, y_pos + 20);
R_text(scales[incr].name);
}
R_stabilize();
return (0);
}
