void
ppm_drawline (ppm_t *p, float fx, float fy, float tx, float ty, guchar *col)
{
float i;
float d, x, y;
if (fabs (fx - tx) > fabs ( fy - ty))
{
if (fx > tx)
{
i = tx; tx = fx; fx = i; i = ty; ty = fy; fy = i;
}
d = (ty - fy) / (tx - fx);
y = fy;
for (x = fx; x <= tx; x += 1.0)
{
ppm_put_rgb (p, x, y, col);
y += d;
}
}
else
{
if (fy > ty)
{
i = tx; tx = fx; fx = i; i = ty; ty = fy; fy = i;
}
d = (tx - fx) / (ty - fy);
x = fx;
for (y = fy; y <= ty; y += 1.0)
{
ppm_put_rgb (p, x, y, col);
x += d;
}
}
}
static void
update_vector_prev (void)
{
static gint ok = 0;
gint i, x, y;
gdouble dir, xo, yo;
gdouble val;
static gdouble last_val = 0.0;
guchar gray[3] = {120, 120, 120};
guchar red[3] = {255, 0, 0};
guchar white[3] = {255, 255, 255};
if (vector_preview_brightness_adjust)
val = 1.0 - gtk_adjustment_get_value (GTK_ADJUSTMENT (vector_preview_brightness_adjust)) / 100.0;
else
val = 0.5;
if (!ok || (val != last_val))
{
infile_copy_to_ppm (&update_vector_preview_backup);
ppm_apply_brightness (&update_vector_preview_backup, val, 1,1,1);
if ((update_vector_preview_backup.width != OMWIDTH) ||
(update_vector_preview_backup.height != OMHEIGHT))
resize_fast (&update_vector_preview_backup, OMWIDTH, OMHEIGHT);
ok = 1;
}
ppm_copy (&update_vector_preview_backup, &update_vector_preview_buffer);
for (i = 0; i < num_vectors; i++)
{
gdouble s;
x = vector[i].x * OMWIDTH;
y = vector[i].y * OMHEIGHT;
dir = gimp_deg_to_rad (vector[i].dir);
s = gimp_deg_to_rad (vector[i].str);
xo = sin (dir) * (6.0+100*s);
yo = cos (dir) * (6.0+100*s);
if (i == selectedvector)
{
ppm_drawline (&update_vector_preview_buffer,
x - xo, y - yo, x + xo, y + yo, red);
}
else
{
ppm_drawline (&update_vector_preview_buffer,
x - xo, y - yo, x + xo, y + yo, gray);
}
ppm_put_rgb (&update_vector_preview_buffer, x - xo, y - yo, white);
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (vector_preview),
0, 0, OMWIDTH, OMHEIGHT,
GIMP_RGB_IMAGE,
(guchar *)update_vector_preview_buffer.col,
OMWIDTH * 3);
}
static void
update_orient_map_preview_prev (void)
{
int x, y;
guchar black[3] = {0, 0, 0};
guchar gray[3] = {120, 120, 120};
guchar white[3] = {255, 255, 255};
if (!PPM_IS_INITED (&update_om_preview_nbuffer))
ppm_new (&update_om_preview_nbuffer,OMWIDTH,OMHEIGHT);
fill (&update_om_preview_nbuffer, black);
for (y = 6; y < OMHEIGHT-4; y += 10)
for (x = 6; x < OMWIDTH-4; x += 10)
{
double dir =
gimp_deg_to_rad (get_direction (x / (double)OMWIDTH,
y / (double)OMHEIGHT,0));
double xo = sin (dir) * 4.0;
double yo = cos (dir) * 4.0;
ppm_drawline (&update_om_preview_nbuffer,
x - xo, y - yo, x + xo, y + yo,
gray);
ppm_put_rgb (&update_om_preview_nbuffer,
x - xo, y - yo,
white);
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (orient_map_preview_prev),
0, 0, OMWIDTH, OMHEIGHT,
GIMP_RGB_IMAGE,
(guchar *)update_om_preview_nbuffer.col,
OMWIDTH * 3);
gtk_widget_queue_draw (orient_map_preview_prev);
gtk_widget_set_sensitive (prev_button, (num_vectors > 1));
gtk_widget_set_sensitive (next_button, (num_vectors > 1));
gtk_widget_set_sensitive (add_button, (num_vectors < MAXORIENTVECT));
gtk_widget_set_sensitive (kill_button, (num_vectors > 1));
}
static void
updatesmvectorprev (void)
{
static int ok = 0;
gint i, x, y;
gdouble val;
static gdouble last_val = 0.0;
guchar gray[3] = {120, 120, 120};
guchar red[3] = {255, 0, 0};
guchar white[3] = {255, 255, 255};
if (smvectprevbrightadjust)
val = 1.0 - gtk_adjustment_get_value (GTK_ADJUSTMENT (smvectprevbrightadjust)) / 100.0;
else
val = 0.5;
if (!ok || (val != last_val))
{
#if 0
if (!PPM_IS_INITED (&infile))
updatepreview (NULL, (void *)2); /* Force grabarea () */
ppm_copy (&infile, &update_vector_preview_backup);
#else
infile_copy_to_ppm (&update_vector_preview_backup);
#endif
ppm_apply_brightness (&update_vector_preview_backup, val, 1,1,1);
if (update_vector_preview_backup.width != OMWIDTH ||
update_vector_preview_backup.height != OMHEIGHT)
resize_fast (&update_vector_preview_backup, OMWIDTH, OMHEIGHT);
ok = 1;
}
ppm_copy (&update_vector_preview_backup, &update_vector_preview_sbuffer);
for (i = 0; i < numsmvect; i++)
{
x = smvector[i].x * OMWIDTH;
y = smvector[i].y * OMHEIGHT;
if (i == selectedsmvector)
{
ppm_drawline (&update_vector_preview_sbuffer, x-5, y, x+5, y, red);
ppm_drawline (&update_vector_preview_sbuffer, x, y-5, x, y+5, red);
}
else
{
ppm_drawline (&update_vector_preview_sbuffer, x-5, y, x+5, y, gray);
ppm_drawline (&update_vector_preview_sbuffer, x, y-5, x, y+5, gray);
}
ppm_put_rgb (&update_vector_preview_sbuffer, x, y, white);
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (smvectorprev),
0, 0, OMWIDTH, OMHEIGHT,
GIMP_RGB_IMAGE,
update_vector_preview_sbuffer.col,
OMWIDTH * 3);
gtk_widget_set_sensitive (prev_button, (numsmvect > 1));
gtk_widget_set_sensitive (next_button, (numsmvect > 1));
gtk_widget_set_sensitive (add_button, (numsmvect < MAXORIENTVECT));
gtk_widget_set_sensitive (kill_button, (numsmvect > 1));
}
