int do_symbol(char *buff)
{
double xper, yper;
int size;
int ix, iy;
char *symb_name;
SYMBOL *Symb;
char *line_color_str, *fill_color_str;
RGBA_Color *line_color, *fill_color;
int R, G, B, ret;
line_color = G_malloc(sizeof(RGBA_Color));
fill_color = G_malloc(sizeof(RGBA_Color));
symb_name = G_malloc(sizeof(char) * strlen(buff) + 1); /* well, it won't be any bigger than this */
line_color_str = G_malloc(sizeof(char) * strlen(buff) + 1);
fill_color_str = G_malloc(sizeof(char) * strlen(buff) + 1);
G_debug(3, "do_symbol() [%s]", buff);
/* set default colors so colors are optional */
strcpy(line_color_str, DEFAULT_FG_COLOR);
strcpy(fill_color_str, "grey");
if (sscanf
(buff, "%*s %s %d %lf %lf %s %s", symb_name, &size, &xper, &yper,
line_color_str, fill_color_str) < 4) {
G_warning(_("Problem parsing command [%s]"), buff);
return (-1);
}
if (mapunits) {
ix = (int)(D_u_to_d_col(xper) + 0.5);
iy = (int)(D_u_to_d_row(yper) + 0.5);
/* consider size in map units too? maybe as percentage of display?
perhaps use "size * D_get_u_to_d_yconv()" to convert */
}
else {
if (xper < 0. || yper < 0. || xper > 100. || yper > 100.)
return (-1);
ix = l + (int)(xper * xincr);
iy = b - (int)(yper * yincr);
}
/* parse line color */
ret = G_str_to_color(line_color_str, &R, &G, &B);
line_color->r = (unsigned char)R;
line_color->g = (unsigned char)G;
line_color->b = (unsigned char)B;
if (ret == 1) {
/* here alpha is only used as an on/off switch, otherwise unused by the display drivers */
line_color->a = RGBA_COLOR_OPAQUE;
}
else if (ret == 2)
line_color->a = RGBA_COLOR_NONE;
else {
G_warning(_("[%s]: No such color"), line_color_str);
return (-1);
}
/* parse fill color */
ret = G_str_to_color(fill_color_str, &R, &G, &B);
fill_color->r = (unsigned char)R;
fill_color->g = (unsigned char)G;
fill_color->b = (unsigned char)B;
if (ret == 1)
fill_color->a = RGBA_COLOR_OPAQUE;
else if (ret == 2)
fill_color->a = RGBA_COLOR_NONE;
else {
G_warning(_("[%s]: No such color"), fill_color_str);
return (-1);
}
Symb = S_read(symb_name);
if (Symb == NULL) {
G_warning(_("Cannot read symbol, cannot display points"));
return (-1);
}
else
S_stroke(Symb, size, rotation, 0);
D_symbol(Symb, ix, iy, line_color, fill_color);
/* restore previous d.graph draw color */
if (last_color.a == RGBA_COLOR_OPAQUE)
R_RGB_color(last_color.r, last_color.g, last_color.b);
else if (last_color.a == RGBA_COLOR_NONE)
D_raster_use_color(D_parse_color(DEFAULT_BG_COLOR, 0));
else /* unset or bad */
R_RGB_color(line_color->r, line_color->g, line_color->b);
G_free(symb_name);
G_free(line_color_str);
G_free(fill_color_str);
G_free(line_color);
G_free(fill_color);
return (0);
}
int draw_n_arrow(double east, double north, double rotation, char *lbl,
int rot_with_text, double fontsize, char *n_arrow_num,
double line_width)
{
double x_pos, y_pos;
double t, b, l, r;
double tt, tb, tl, tr; /* text box */
SYMBOL *Symb;
RGBA_Color *line_color, *fill_color;
int R, G, B;
double x0, y0;
char icon[64];
double symbol_size;
/* Establish text size */
if (fontsize > 0)
D_text_size(fontsize, fontsize);
D_setup_unity(0);
D_get_src(&t, &b, &l, &r);
x_pos = l + (int)(east * (r - l) / 100.);
y_pos = t + (int)((100. - north) * (b - t) / 100.);
if (line_width > 0)
D_line_width(line_width);
if (fontsize > 0) {
/* draw the label (default "N") */
if (rot_with_text)
D_text_rotation(rotation * 180.0 / M_PI);
D_get_text_box(lbl, &tt, &tb, &tl, &tr);
D_use_color(text_color);
/* positions manually tuned */
switch (n_arrow_num[0]) {
case '1':
D_pos_abs(x_pos - sin(rotation) * 50 - (tr + tl) / 2,
y_pos - cos(rotation) * 50 - (tb + tt) / 2);
D_text(lbl);
break;
case '3':
D_pos_abs(x_pos - sin(rotation) * 60 - (tr + tl) / 2,
y_pos - cos(rotation) * 60 - (tb + tt) / 2);
D_text(lbl);
break;
case '4':
D_pos_abs(x_pos - sin(rotation) * 45 - (tr + tl) / 2,
y_pos - cos(rotation) * 45 - (tb + tt) / 2);
D_text(lbl);
break;
case '7':
D_pos_abs(x_pos - sin(rotation) * 70 - (tr + tl) / 2,
y_pos - cos(rotation) * 70 - (tb + tt) / 2);
D_text(lbl);
break;
case '8':
D_pos_abs(x_pos - sin(rotation) * 60 - (tr + tl) / 2,
y_pos - cos(rotation) * 60 - (tb + tt) / 2);
D_text(lbl);
break;
case '9':
D_pos_abs(x_pos - sin(rotation) * 55 - (tr + tl) / 2,
y_pos - cos(rotation) * 55 - (tb + tt) / 2);
D_text(lbl);
break;
case 'f':
D_pos_abs(x_pos - sin(rotation) * 55 - (tr + tl) / 2,
y_pos - cos(rotation) * 55 - (tb + tt) / 2);
D_text(lbl);
break;
case 'b':
D_pos_abs(x_pos - sin(rotation) * 48.5 - (tr + tl) / 2,
y_pos - cos(rotation) * 48.5 - (tb + tt) / 2);
D_text(lbl);
break;
case 'a':
D_pos_abs(x_pos - sin(rotation) * 50 - (tr + tl) / 2,
y_pos - cos(rotation) * 50 - (tb + tt) / 2);
D_text(lbl);
break;
case 's':
D_pos_abs(x_pos - sin(rotation) * 50 - (tr + tl) / 2,
y_pos - cos(rotation) * 50 - (tb + tt) / 2);
D_text(lbl);
break;
case '2':
case '5':
case '6':
break;
default:
G_fatal_error(_("Could not parse symbol"));
}
}
/* display the north arrow symbol */
line_color = G_malloc(sizeof(RGBA_Color));
fill_color = G_malloc(sizeof(RGBA_Color));
if (D_color_number_to_RGB(fg_color, &R, &G, &B) == 0)
line_color->a = RGBA_COLOR_TRANSPARENT;
else
line_color->a = RGBA_COLOR_OPAQUE;
line_color->r = (unsigned char)R;
line_color->g = (unsigned char)G;
line_color->b = (unsigned char)B;
if (D_color_number_to_RGB(bg_color, &R, &G, &B) == 0)
fill_color->a = RGBA_COLOR_TRANSPARENT;
else
fill_color->a = RGBA_COLOR_OPAQUE;
fill_color->r = (unsigned char)R;
fill_color->g = (unsigned char)G;
fill_color->b = (unsigned char)B;
/* sizes manually tuned */
switch (n_arrow_num[0]) {
case '1':
symbol_size = 35.;
break;
case '2':
symbol_size = 19.;
break;
case '3':
symbol_size = 20.;
break;
case '4':
symbol_size = 15.;
break;
case '5':
case '6':
symbol_size = 14.;
break;
case '7':
symbol_size = 23.;
break;
case '8':
case '9':
symbol_size = 17.;
break;
case 'b':
symbol_size = 80.;
break;
case 'f':
symbol_size = 100.;
break;
case 'a':
if (n_arrow_num[5] == '2')
symbol_size = 53.;
else
symbol_size = 70.;
break;
case 's':
symbol_size = 80.;
break;
default:
G_fatal_error(_("Could not parse symbol"));
}
x0 = D_d_to_u_col(x_pos);
y0 = D_d_to_u_row(y_pos);
if (n_arrow_num[0] == 'b')
strcpy(icon, "n_arrows/basic_compass");
else if (n_arrow_num[0] == 'f')
strcpy(icon, "n_arrows/fancy_compass");
else if (n_arrow_num[0] == 'a' && n_arrow_num[5] == '1')
strcpy(icon, "basic/arrow1");
else if (n_arrow_num[0] == 'a' && n_arrow_num[5] == '2')
strcpy(icon, "basic/arrow2");
else if (n_arrow_num[0] == 'a' && n_arrow_num[5] == '3')
strcpy(icon, "basic/arrow3");
else if (n_arrow_num[0] == 's')
strcpy(icon, "extra/4pt_star");
else {
strcpy(icon, "n_arrows/n_arrow");
strncat(icon, n_arrow_num, 32);
}
Symb = S_read(icon);
if (!Symb)
G_fatal_error(_("Could not read symbol \"%s\""), icon);
S_stroke(Symb, symbol_size, rotation * (180 / M_PI), 0);
D_symbol(Symb, x0, y0, line_color, fill_color);
if (line_width > 0)
D_line_width(0);
G_free(Symb);
G_free(line_color);
G_free(fill_color);
return 0;
}
int draw_n_arrow(double east, double north, double fontsize,
char *n_arrow_num, double line_width)
{
double x_pos, y_pos;
double t, b, l, r;
double tt, tb, tl, tr; /* text box*/
SYMBOL *Symb;
RGBA_Color *line_color, *fill_color;
int R, G, B;
double x0, y0;
char icon[64];
double symbol_size;
/* Establish text size */
if (fontsize > 0)
D_text_size(fontsize, fontsize);
D_setup_unity(0);
D_get_src(&t, &b, &l, &r);
x_pos = east * (r - l) / 100.;
y_pos = (100. - north) * (b - t) / 100.;
if (line_width > 0)
D_line_width(line_width);
if (fontsize > 0) {
/* draw the "N" */
D_get_text_box("N", &tt, &tb, &tl, &tr);
D_use_color(fg_color);
/* positions manually tuned */
switch (n_arrow_num[0]) {
case '1':
D_pos_abs(x_pos - (tr + tl) / 2, y_pos - 45);
D_text("N");
break;
case '3':
D_pos_abs(x_pos - (tr + tl) / 2, y_pos - 60);
D_text("N");
break;
case '4':
D_pos_abs(x_pos - (tr + tl) / 2, y_pos - 45);
D_text("N");
break;
case '7':
D_pos_abs(x_pos - (tr + tl) / 2, y_pos - 70);
D_text("N");
break;
case '9':
case 'f':
D_pos_abs(x_pos - (tr + tl) / 2, y_pos - 55);
D_text("N");
break;
case 'b':
D_pos_abs(x_pos - (tr + tl) / 2, y_pos - 48.5);
D_text("N");
break;
case '2':
case '5':
case '6':
case '8':
break;
default:
G_fatal_error(_("Could not parse symbol"));
}
}
/* display the north arrow symbol */
line_color = G_malloc(sizeof(RGBA_Color));
fill_color = G_malloc(sizeof(RGBA_Color));
if (D_color_number_to_RGB(fg_color, &R, &G, &B) == 0)
/* fall back to black on failure */
G_str_to_color(DEFAULT_FG_COLOR, &R, &G, &B);
line_color->r = (unsigned char)R;
line_color->g = (unsigned char)G;
line_color->b = (unsigned char)B;
line_color->a = RGBA_COLOR_OPAQUE;
if (D_color_number_to_RGB(bg_color, &R, &G, &B) == 0)
/* fall back to black on failure */
G_str_to_color(DEFAULT_FG_COLOR, &R, &G, &B);
fill_color->r = (unsigned char)R;
fill_color->g = (unsigned char)G;
fill_color->b = (unsigned char)B;
fill_color->a = RGBA_COLOR_OPAQUE;
if (n_arrow_num[0] == '2' || n_arrow_num[0] == '9')
fill_color->a = RGBA_COLOR_TRANSPARENT;
/* sizes manually tuned */
switch (n_arrow_num[0]) {
case '1':
symbol_size = 35.;
break;
case '2':
symbol_size = 19.;
break;
case '3':
symbol_size = 20.;
break;
case '4':
symbol_size = 15.;
break;
case '5':
case '6':
symbol_size = 14.;
break;
case '7':
symbol_size = 23.;
break;
case '8':
case '9':
symbol_size = 17.;
break;
case 'b':
symbol_size = 80.;
break;
case 'f':
symbol_size = 100.;
break;
default:
G_fatal_error(_("Could not parse symbol"));
}
x0 = D_d_to_u_col(x_pos);
y0 = D_d_to_u_row(y_pos);
if (n_arrow_num[0] == 'b')
strcpy(icon, "n_arrows/basic_compass");
else if (n_arrow_num[0] == 'f')
strcpy(icon, "n_arrows/fancy_compass");
else {
strcpy(icon, "n_arrows/n_arrow");
strncat(icon, n_arrow_num, 32);
}
Symb = S_read(icon);
if(!Symb)
G_fatal_error(_("Could not read symbol \"%s\""), icon);
S_stroke(Symb, symbol_size, 0.0, 0);
D_symbol(Symb, x0, y0, line_color, fill_color);
if (line_width > 0)
D_line_width(0);
G_free(Symb);
G_free(line_color);
G_free(fill_color);
return 0;
}
int display_lines(struct Map_info *Map, struct cat_list *Clist,
int chcat, const char *symbol_name, double size,
int default_width, dbCatValArray * cvarr, double *breaks,
int nbreaks, const struct color_rgb *colors, const struct
color_rgb *bcolor)
{
int ltype, line, nlines;
struct line_pnts *Points;
struct line_cats *Cats;
int n_points, n_lines, n_centroids, n_boundaries, n_faces;
RGBA_Color *primary_color, *secondary_color;
SYMBOL *Symb;
Symb = NULL;
double breakval = 0.0;
int cat;
dbCatVal *cv = NULL;
int i;
primary_color = G_malloc(sizeof(RGBA_Color));
primary_color->a = RGBA_COLOR_OPAQUE;
secondary_color = G_malloc(sizeof(RGBA_Color));
secondary_color->a = RGBA_COLOR_OPAQUE;
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct();
/* dynamic symbols for points */
Symb = S_read(symbol_name);
if (!Symb)
G_warning(_("Unable to read symbol <%s>, unable to display points"),
symbol_name);
else
S_stroke(Symb, size, 0.0, 0);
Vect_rewind(Map);
nlines = -1;
line = 0;
n_points = n_lines = 0;
n_centroids = n_boundaries = 0;
n_faces = 0;
while (TRUE) {
line++;
if (nlines > -1) {
if (line > nlines)
break;
ltype = Vect_read_line(Map, Points, Cats, line);
}
else {
ltype = Vect_read_next_line(Map, Points, Cats);
if (ltype == -1) {
G_fatal_error(_("Unable to read vector map"));
}
else if ((ltype == -2)) { /* EOF */
break;
}
}
cat = *Cats->cat;
if (cat >= 0) {
G_debug(3, "display line %d, cat %d", line, cat);
/* Get value of data for this area */
if (db_CatValArray_get_value(cvarr, cat, &cv) != DB_OK) {
G_debug(3, "No value found for cat %i", cat);
}
else {
db_CatValArray_get_value(cvarr, cat, &cv);
breakval = (cvarr->ctype == 2 ? cv->val.i : cv->val.d);
}
}
/* find out into which class breakval falls */
i = 0;
while (breakval > breaks[i] && i < nbreaks)
i++;
primary_color->r = colors[i].r;
primary_color->g = colors[i].g;
primary_color->b = colors[i].b;
if (bcolor !=NULL) {
secondary_color->r = bcolor->r;
secondary_color->g = bcolor->g;
secondary_color->b = bcolor->b;
}
else
secondary_color->a = 0;
draw_line(ltype, line, Points, Cats, chcat, size, default_width,
Clist, Symb, primary_color, &n_points, &n_lines,
&n_centroids, &n_boundaries, &n_faces, secondary_color);
}
if (n_points > 0)
G_verbose_message(n_
("%d point plotted", "%d points plotted", n_points),
n_points);
if (n_lines > 0)
G_verbose_message(n_("%d line plotted", "%d lines plotted", n_lines),
n_lines);
if (n_centroids > 0)
G_verbose_message(n_
("%d centroid plotted", "%d centroids plotted",
n_centroids), n_centroids);
if (n_boundaries > 0)
G_verbose_message(n_
("%d boundary plotted", "%d boundaries plotted",
n_boundaries), n_boundaries);
if (n_faces > 0)
G_verbose_message(n_("%d face plotted", "%d faces plotted", n_faces),
n_faces);
Vect_destroy_line_struct(Points);
Vect_destroy_cats_struct(Cats);
G_free(primary_color);
return 0;
}