void brush_get_selected (ppm_t *p)
{
if (brush_from_file)
brush_reload (pcvals.selected_brush, p);
else
ppm_copy (&brushppm, p);
}
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);
}
/*
* This function caches the last result. Call it with fn as NULL, to
* free the arguments.
* */
void
brush_reload (const gchar *fn,
ppm_t *p)
{
static char lastfn[256] = "";
static ppm_t cache = {0, 0, NULL};
if (fn == NULL)
{
ppm_kill (&cache);
lastfn[0] = '\0';
return;
}
if (strcmp (fn, lastfn))
{
g_strlcpy (lastfn, fn, sizeof (lastfn));
ppm_kill (&cache);
ppm_load (fn, &cache);
}
ppm_copy (&cache, p);
set_colorbrushes (fn);
}
static void
update_brush_preview (const gchar *fn)
{
gint i, j;
guchar *preview_image;
if (fn)
brush_from_file = 1;
preview_image = g_new0 (guchar, 100*100);
if (!fn && brush_from_file)
{
/* preview_image is already initialized to our liking. */
}
else
{
double sc;
ppm_t p = {0, 0, NULL};
guchar gammatable[256];
int newheight;
if (brush_from_file)
brush_reload (fn, &p);
else if (PPM_IS_INITED (&brushppm))
ppm_copy (&brushppm, &p);
set_colorbrushes (fn);
sc = gtk_adjustment_get_value (brush_gamma_adjust);
if (sc != 1.0)
for (i = 0; i < 256; i++)
gammatable[i] = pow (i / 255.0, sc) * 255;
else
for (i = 0; i < 256; i++)
gammatable[i] = i;
newheight = p.height *
pow (10, gtk_adjustment_get_value (brush_aspect_adjust));
sc = p.width > newheight ? p.width : newheight;
sc = 100.0 / sc;
resize_fast (&p, p.width*sc,newheight*sc);
padbrush (&p, 100, 100);
for (i = 0; i < 100; i++)
{
int k = i * p.width * 3;
if (i < p.height)
for (j = 0; j < p.width; j++)
preview_image[i*100+j] = gammatable[p.col[k + j * 3]];
}
ppm_kill (&p);
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (brush_preview),
0, 0, 100, 100,
GIMP_GRAY_IMAGE,
preview_image,
100);
g_free (preview_image);
}
void
repaint (ppm_t *p, ppm_t *a)
{
int x, y;
int tx = 0, ty = 0;
ppm_t tmp = {0, 0, NULL};
ppm_t atmp = {0, 0, NULL};
int r, g, b, h, i, j, on, sn;
int num_brushes, maxbrushwidth, maxbrushheight;
guchar back[3] = {0, 0, 0};
ppm_t *brushes, *shadows;
ppm_t *brush, *shadow = NULL;
double *brushes_sum;
int cx, cy, maxdist;
double scale, relief, startangle, anglespan, density, bgamma;
int max_progress;
ppm_t paper_ppm = {0, 0, NULL};
ppm_t dirmap = {0, 0, NULL};
ppm_t sizmap = {0, 0, NULL};
int *xpos = NULL, *ypos = NULL;
int progstep;
static int running = 0;
int dropshadow = pcvals.general_drop_shadow;
int shadowblur = pcvals.general_shadow_blur;
if (running)
return;
running++;
runningvals = pcvals;
/* Shouldn't be necessary, but... */
if (img_has_alpha)
if ((p->width != a->width) || (p->height != a->height))
{
g_printerr ("Huh? Image size != alpha size?\n");
return;
}
num_brushes = runningvals.orient_num * runningvals.size_num;
startangle = runningvals.orient_first;
anglespan = runningvals.orient_last;
density = runningvals.brush_density;
if (runningvals.place_type == PLACEMENT_TYPE_EVEN_DIST)
density /= 3.0;
bgamma = runningvals.brushgamma;
brushes = g_malloc (num_brushes * sizeof (ppm_t));
brushes_sum = g_malloc (num_brushes * sizeof (double));
if (dropshadow)
shadows = g_malloc (num_brushes * sizeof (ppm_t));
else
shadows = NULL;
brushes[0].col = NULL;
brush_get_selected (&brushes[0]);
resize (&brushes[0],
brushes[0].width,
brushes[0].height * pow (10, runningvals.brush_aspect));
scale = runningvals.size_last / MAX (brushes[0].width, brushes[0].height);
if (bgamma != 1.0)
ppm_apply_gamma (&brushes[0], 1.0 / bgamma, 1,1,1);
resize (&brushes[0], brushes[0].width * scale, brushes[0].height * scale);
i = 1 + sqrt (brushes[0].width * brushes[0].width +
brushes[0].height * brushes[0].height);
ppm_pad (&brushes[0], i-brushes[0].width, i-brushes[0].width,
i - brushes[0].height, i - brushes[0].height, back);
for (i = 1; i < num_brushes; i++)
{
brushes[i].col = NULL;
ppm_copy (&brushes[0], &brushes[i]);
}
for (i = 0; i < runningvals.size_num; i++)
{
double sv;
if (runningvals.size_num > 1)
sv = i / (runningvals.size_num - 1.0);
else sv = 1.0;
for (j = 0; j < runningvals.orient_num; j++)
{
h = j + i * runningvals.orient_num;
free_rotate (&brushes[h],
startangle + j * anglespan / runningvals.orient_num);
rescale (&brushes[h],
( sv * runningvals.size_first +
(1.0-sv) * runningvals.size_last ) / runningvals.size_last);
autocrop (&brushes[h],1);
}
}
/* Brush-debugging */
#if 0
for (i = 0; i < num_brushes; i++)
{
char tmp[1000];
g_snprintf (tmp, sizeof (tmp), "/tmp/_brush%03d.ppm", i);
ppm_save (&brushes[i], tmp);
}
#endif
for (i = 0; i < num_brushes; i++)
{
if (!runningvals.color_brushes)
prepare_brush (&brushes[i]);
brushes_sum[i] = sum_brush (&brushes[i]);
}
brush = &brushes[0];
maxbrushwidth = maxbrushheight = 0;
for (i = 0; i < num_brushes; i++)
{
if (brushes[i].width > maxbrushwidth)
maxbrushwidth = brushes[i].width;
if (brushes[i].height > maxbrushheight)
maxbrushheight = brushes[i].height;
}
for (i = 0; i < num_brushes; i++)
{
int xp, yp;
guchar blk[3] = {0, 0, 0};
xp = maxbrushwidth - brushes[i].width;
yp = maxbrushheight - brushes[i].height;
if (xp || yp)
ppm_pad (&brushes[i], xp / 2, xp - xp / 2, yp / 2, yp - yp / 2, blk);
}
if (dropshadow)
{
for (i = 0; i < num_brushes; i++)
{
shadows[i].col = NULL;
ppm_copy (&brushes[i], &shadows[i]);
ppm_apply_gamma (&shadows[i], 0, 1,1,0);
ppm_pad (&shadows[i], shadowblur*2, shadowblur*2,
shadowblur*2, shadowblur*2, back);
for (j = 0; j < shadowblur; j++)
blur (&shadows[i], 2, 2);
#if 0
autocrop (&shadows[i],1);
#endif
}
#if 0
maxbrushwidth += shadowdepth*3;
maxbrushheight += shadowdepth*3;
#endif
}
/* For extra annoying debugging :-) */
#if 0
ppm_save (brushes, "/tmp/__brush.ppm");
if (shadows) ppm_save (shadows, "/tmp/__shadow.ppm");
system ("xv /tmp/__brush.ppm & xv /tmp/__shadow.ppm & ");
#endif
if (runningvals.general_paint_edges)
{
edgepad (p, maxbrushwidth, maxbrushwidth,
maxbrushheight, maxbrushheight);
if (img_has_alpha)
edgepad (a, maxbrushwidth, maxbrushwidth,
maxbrushheight, maxbrushheight);
}
if (img_has_alpha)
{
/* Initially fully transparent */
if (runningvals.general_background_type == BG_TYPE_TRANSPARENT)
{
guchar tmpcol[3] = {255, 255, 255};
ppm_new (&atmp, a->width, a->height);
fill (&atmp, tmpcol);
}
else
{
ppm_copy (a, &atmp);
}
}
if (runningvals.general_background_type == BG_TYPE_SOLID)
{
guchar tmpcol[3];
ppm_new (&tmp, p->width, p->height);
gimp_rgb_get_uchar (&runningvals.color,
&tmpcol[0], &tmpcol[1], &tmpcol[2]);
fill (&tmp, tmpcol);
}
else if (runningvals.general_background_type == BG_TYPE_KEEP_ORIGINAL)
{
ppm_copy (p, &tmp);
}
else
{
int dx, dy;
ppm_new (&tmp, p->width, p->height);
ppm_load (runningvals.selected_paper, &paper_ppm);
if (runningvals.paper_scale != 100.0)
{
scale = runningvals.paper_scale / 100.0;
resize (&paper_ppm, paper_ppm.width * scale, paper_ppm.height * scale);
}
if (runningvals.paper_invert)
ppm_apply_gamma (&paper_ppm, -1.0, 1, 1, 1);
dx = runningvals.general_paint_edges ? paper_ppm.width - maxbrushwidth : 0;
dy = runningvals.general_paint_edges ? paper_ppm.height - maxbrushheight : 0;
for (y = 0; y < tmp.height; y++)
{
int lx;
int ry = (y + dy) % paper_ppm.height;
for (x = 0; x < tmp.width; x+=lx)
{
int rx = (x + dx) % paper_ppm.width;
lx = MIN (tmp.width - x, paper_ppm.width - rx);
memcpy (&tmp.col[y * tmp.width * 3 + x * 3],
&paper_ppm.col[ry * paper_ppm.width * 3 + rx * 3],
3 * lx);
}
}
}
cx = p->width / 2;
cy = p->height / 2;
maxdist = sqrt (cx * cx + cy * cy);
switch (runningvals.orient_type)
{
case ORIENTATION_VALUE:
ppm_new (&dirmap, p->width, p->height);
for (y = 0; y < dirmap.height; y++)
{
guchar *dstrow = &dirmap.col[y * dirmap.width * 3];
guchar *srcrow = &p->col[y * p->width * 3];
for (x = 0; x < dirmap.width; x++)
{
dstrow[x * 3] =
(srcrow[x * 3] + srcrow[x * 3 + 1] + srcrow[x * 3 + 2]) / 3;
}
}
break;
case ORIENTATION_RADIUS:
ppm_new (&dirmap, p->width, p->height);
for (y = 0; y < dirmap.height; y++)
{
guchar *dstrow = &dirmap.col[y * dirmap.width * 3];
double ysqr = (cy - y) * (cy - y);
for (x = 0; x < dirmap.width; x++)
{
dstrow[x*3] = sqrt ((cx - x) * (cx - x) + ysqr) * 255 / maxdist;
}
}
break;
case ORIENTATION_RADIAL:
ppm_new (&dirmap, p->width, p->height);
for (y = 0; y < dirmap.height; y++)
{
guchar *dstrow = &dirmap.col[y * dirmap.width * 3];
for (x = 0; x < dirmap.width; x++)
{
dstrow[x * 3] = (G_PI + atan2 (cy - y, cx - x)) *
255.0 / (G_PI * 2);
}
}
break;
case ORIENTATION_FLOWING:
ppm_new (&dirmap, p->width / 6 + 5, p->height / 6 + 5);
mkgrayplasma (&dirmap, 15);
blur (&dirmap, 2, 2);
blur (&dirmap, 2, 2);
resize (&dirmap, p->width, p->height);
blur (&dirmap, 2, 2);
if (runningvals.general_paint_edges)
edgepad (&dirmap, maxbrushwidth, maxbrushheight,
maxbrushwidth, maxbrushheight);
break;
case ORIENTATION_HUE:
ppm_new (&dirmap, p->width, p->height);
for (y = 0; y < dirmap.height; y++)
{
guchar *dstrow = &dirmap.col[y * dirmap.width * 3];
guchar *srcrow = &p->col[y * p->width * 3];
for (x = 0; x < dirmap.width; x++)
{
dstrow[x * 3] = get_hue (&srcrow[x * 3]);
}
}
break;
case ORIENTATION_ADAPTIVE:
{
guchar tmpcol[3] = {0, 0, 0};
ppm_new (&dirmap, p->width, p->height);
fill (&dirmap, tmpcol);
}
break;
case ORIENTATION_MANUAL:
ppm_new (&dirmap, p->width-maxbrushwidth*2, p->height-maxbrushheight*2);
for (y = 0; y < dirmap.height; y++)
{
guchar *dstrow = &dirmap.col[y * dirmap.width * 3];
double tmpy = y / (double)dirmap.height;
for (x = 0; x < dirmap.width; x++)
{
dstrow[x * 3] = get_pixel_value(90 -
get_direction(x /
(double)dirmap.width,
tmpy, 1));
}
}
edgepad (&dirmap,
maxbrushwidth, maxbrushwidth,
maxbrushheight, maxbrushheight);
break;
}
if (runningvals.size_type == SIZE_TYPE_VALUE)
{
ppm_new (&sizmap, p->width, p->height);
for (y = 0; y < sizmap.height; y++)
{
guchar *dstrow = &sizmap.col[y * sizmap.width * 3];
guchar *srcrow = &p->col[y * p->width * 3];
for (x = 0; x < sizmap.width; x++)
{
dstrow[x * 3] =
(srcrow[x * 3] + srcrow[x * 3 + 1] + srcrow[x * 3 + 2]) / 3;
}
}
}
else if (runningvals.size_type == SIZE_TYPE_RADIUS)
{
ppm_new (&sizmap, p->width, p->height);
for (y = 0; y < sizmap.height; y++)
{
guchar *dstrow = &sizmap.col[y * sizmap.width * 3];
double ysqr = (cy - y) * (cy - y);
for (x = 0; x < sizmap.width; x++)
{
dstrow[x * 3] =
sqrt ((cx - x) * (cx - x) + ysqr) * 255 / maxdist;
}
}
}
else if (runningvals.size_type == SIZE_TYPE_RADIAL)
{
ppm_new (&sizmap, p->width, p->height);
for (y = 0; y < sizmap.height; y++)
{
guchar *dstrow = &sizmap.col[y * sizmap.width * 3];
for (x = 0; x < sizmap.width; x++)
{
dstrow[x * 3] = (G_PI + atan2 (cy - y, cx - x)) *
255.0 / (G_PI * 2);
}
}
}
else if (runningvals.size_type == SIZE_TYPE_FLOWING)
{
ppm_new (&sizmap, p->width / 6 + 5, p->height / 6 + 5);
mkgrayplasma (&sizmap, 15);
blur (&sizmap, 2, 2);
blur (&sizmap, 2, 2);
resize (&sizmap, p->width, p->height);
blur (&sizmap, 2, 2);
if (runningvals.general_paint_edges)
edgepad (&sizmap,
maxbrushwidth, maxbrushheight,
maxbrushwidth, maxbrushheight);
}
else if (runningvals.size_type == SIZE_TYPE_HUE)
{
ppm_new (&sizmap, p->width, p->height);
for (y = 0; y < sizmap.height; y++)
{
guchar *dstrow = &sizmap.col[y * sizmap.width * 3];
guchar *srcrow = &p->col[y * p->width * 3];
for (x = 0; x < sizmap.width; x++)
{
dstrow[ x * 3] = get_hue (&srcrow[x * 3]);
}
}
}
else if (runningvals.size_type == SIZE_TYPE_ADAPTIVE)
{
guchar tmpcol[3] = {0, 0, 0};
ppm_new (&sizmap, p->width, p->height);
fill (&sizmap, tmpcol);
}
else if (runningvals.size_type == SIZE_TYPE_MANUAL)
{
ppm_new (&sizmap,
p->width-maxbrushwidth * 2,
p->height-maxbrushheight * 2);
for (y = 0; y < sizmap.height; y++)
{
guchar *dstrow = &sizmap.col[y * sizmap.width * 3];
double tmpy = y / (double)sizmap.height;
for (x = 0; x < sizmap.width; x++)
{
dstrow[x * 3] = 255 * (1.0 - get_siz_from_pcvals (x / (double)sizmap.width, tmpy));
}
}
edgepad (&sizmap,
maxbrushwidth, maxbrushwidth,
maxbrushheight, maxbrushheight);
}
#if 0
ppm_save(&sizmap, "/tmp/_sizmap.ppm");
#endif
if (runningvals.place_type == PLACEMENT_TYPE_RANDOM)
{
i = tmp.width * tmp.height / (maxbrushwidth * maxbrushheight);
i *= density;
}
else if (runningvals.place_type == PLACEMENT_TYPE_EVEN_DIST)
{
i = (int)(tmp.width * density / maxbrushwidth) *
(int)(tmp.height * density / maxbrushheight);
#if 0
g_printerr("i=%d\n", i);
#endif
}
if (i < 1)
i = 1;
max_progress = i;
progstep = max_progress / 30;
if (progstep < 10)
progstep = 10;
if (runningvals.place_type == PLACEMENT_TYPE_EVEN_DIST)
{
int j;
xpos = g_new (int, i);
ypos = g_new (int, i);
for (j = 0; j < i; j++)
{
int factor = (int)(tmp.width * density / maxbrushwidth + 0.5);
if (factor < 1)
factor = 1;
xpos[j] = maxbrushwidth/2 + (j % factor) * maxbrushwidth / density;
ypos[j] = maxbrushheight/2 + (j / factor) * maxbrushheight / density;
}
for (j = 0; j < i; j++)
{
int a, b;
a = g_rand_int_range (random_generator, 0, i);
b = xpos[j]; xpos[j] = xpos[a]; xpos[a] = b;
b = ypos[j]; ypos[j] = ypos[a]; ypos[a] = b;
}
}
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));
}
