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#include <math.h>
#include <grass/gis.h>
#include "driver.h"
#include "driverlib.h"
static int am_inside;
static int dont_draw;
static int t, b, l, r;
static double basex, basey;
static double curx, cury;
static void remember(double x, double y)
{
if ((int)x > r)
r = (int)x;
if ((int)x < l)
l = (int)x;
if ((int)y > b)
b = (int)y;
if ((int)y < t)
t = (int)y;
curx = x;
cury = y;
}
static void text_draw(double x, double y)
{
int X1 = (int)x;
int Y1 = (int)y;
int X2 = (int)curx;
int Y2 = (int)cury;
if (am_inside) {
COM_Cont_abs(X1, Y1);
}
else {
COM_Move_abs(X2, Y2);
COM_Cont_abs(X1, Y1);
am_inside = 1;
}
curx = x;
cury = y;
}
static void text_move(double x, double y)
{
int X1 = (int)x;
int Y1 = (int)y;
if (am_inside)
COM_Move_abs(X1, Y1);
curx = x;
cury = y;
}
void drawchar(double text_size_x, double text_size_y,
double sinrot, double cosrot, unsigned char character)
{
unsigned char *X;
unsigned char *Y;
int n_vects;
int i;
int ax, ay;
double x, y;
void (*Do) (double, double);
int ix, iy;
x = basex;
y = basey;
get_char_vects(character, &n_vects, &X, &Y);
Do = text_move;
for (i = 1; i < n_vects; i++) {
if (X[i] == ' ') {
Do = text_move;
continue;
}
ix = 10 + X[i] - 'R';
iy = 10 - Y[i] + 'R';
ax = (int)(text_size_x * (double)ix);
ay = (int)(text_size_y * (double)iy);
if (dont_draw) {
remember(x + (ax * cosrot - ay * sinrot),
y - (ax * sinrot + ay * cosrot));
}
else {
(*Do) (x + (ax * cosrot - ay * sinrot),
y - (ax * sinrot + ay * cosrot));
Do = text_draw;
}
}
/* This seems to do variable spacing
ix = 10 + X[i] - 'R';
*/
ix = 20;
iy = 0;
ax = (int)(text_size_x * (double)ix);
ay = (int)(text_size_y * (double)iy);
if (!dont_draw)
text_move(basex + (ax * cosrot - ay * sinrot),
basey - (ax * sinrot + ay * cosrot));
else
remember(basex + (ax * cosrot - ay * sinrot),
basey - (ax * sinrot + ay * cosrot));
}
void soft_text_ext(int x, int y,
double text_size_x, double text_size_y,
double text_rotation, const char *string)
{
t = 999999;
b = 0;
l = 999999;
r = 0;
dont_draw = 1;
soft_text(x, y, text_size_x, text_size_y, text_rotation, string);
dont_draw = 0;
}
void get_text_ext(int *top, int *bot, int *left, int *rite)
{
*top = t;
*bot = b;
*left = l;
*rite = r;
}
# define RpD ((2 * M_PI) / 360.) /* radians/degree */
# define D2R(d) (double)(d * RpD) /* degrees->radians */
void soft_text(int x, int y,
double text_size_x, double text_size_y, double text_rotation,
const char *string)
{
double sinrot = sin(D2R(text_rotation));
double cosrot = cos(D2R(text_rotation));
am_inside = 0;
curx = basex = (double)x;
cury = basey = (double)y;
while (*string) {
drawchar(text_size_x, text_size_y, sinrot, cosrot, *string++);
basex = curx;
basey = cury;
}
}
void onechar(int x, int y,
double text_size_x, double text_size_y, double text_rotation,
unsigned char achar)
{
double sinrot = sin(D2R(text_rotation));
double cosrot = cos(D2R(text_rotation));
am_inside = 0;
curx = basex = (double)x;
cury = basey = (double)y;
drawchar(text_size_x, text_size_y, sinrot, cosrot, achar);
}
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