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Re-write some parts of the algorithm. This should fix #82464, #71922 and #121966.

This commit is contained in:
David Odin 2004-01-15 21:08:21 +00:00
parent cc2534b167
commit 15234e8923
2 changed files with 60 additions and 56 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2004-01-15 DindinX <david@dindinx.org>
* plug-ins/common/nova.c: Re-write some parts of the algorithm.
This should fix #82464, #71922 and #121966.
2004-01-15 Manish Singh <yosh@gimp.org>
* app/text/gimpfontlist.c: Set PangoStretch from FC_WIDTH. This

111
plug-ins/common/nova.c
View File

@ -711,13 +711,13 @@ nova_center_preview_events (GtkWidget *widget,
static gdouble
gauss (GRand *gr)
{
gdouble sum = 0;
gdouble sum = 0.0;
gint i;
for (i = 0; i < 6; i++)
sum += (gdouble) g_rand_double (gr);
return sum / 6;
return sum / 6.0;
}
static void
@ -727,31 +727,24 @@ nova (GimpDrawable *drawable,
GimpPixelRgn src_rgn;
GimpPixelRgn dest_rgn;
gpointer pr;
guchar *src_row, *dest_row;
guchar *src, *dest;
gint x1, y1, x2, y2;
gint row, col;
gint x, y;
gint alpha, bpp;
gint progress, max_progress;
gboolean has_alpha;
gint xc, yc; /* center of nova */
gdouble u, v;
gdouble l;
gdouble w, w1, c;
gdouble *spoke;
gdouble nova_alpha;
gdouble src_alpha;
gdouble new_alpha;
gdouble compl_ratio;
gdouble ratio;
GimpRGB color;
GimpRGB src_color;
GimpRGB *spokecolor;
GimpHSV hsv;
gdouble spokecol;
gint i, j;
GRand *gr;
guchar *src_row, *dest_row, *save_src;
guchar *src, *dest;
gint x1, y1, x2, y2, x, y;
gint row, col;
gint alpha, bpp;
gint progress, max_progress;
gboolean has_alpha;
gint xc, yc; /* center of nova */
gdouble u, v, l, w, w1, c;
gdouble *spoke;
gdouble nova_alpha, src_alpha, new_alpha = 0.0;
gdouble compl_ratio, ratio;
GimpRGB color;
GimpRGB *spokecolor;
GimpHSV hsv;
gdouble spokecol;
gint i;
GRand *gr;
gr = g_rand_new ();
@ -769,7 +762,7 @@ nova (GimpDrawable *drawable,
spoke[i] = gauss (gr);
hsv.h += ((gdouble) pvals.randomhue / 360.0) *
g_rand_double_range (gr, -0.5, 0.5);
g_rand_double_range (gr, -0.5, 0.5);
if (hsv.h < 0)
hsv.h += 1.0;
else if (hsv.h >= 1.0)
@ -787,14 +780,11 @@ nova (GimpDrawable *drawable,
x2 = preview->width;
y2 = preview->height;
bpp = preview->bpp;
has_alpha = FALSE;
alpha = bpp;
}
else
{
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
bpp = gimp_drawable_bpp (drawable->drawable_id);
alpha = (has_alpha) ? bpp - 1 : bpp;
xc = pvals.xcenter;
yc = pvals.ycenter;
@ -803,6 +793,7 @@ nova (GimpDrawable *drawable,
gimp_pixel_rgn_init (&dest_rgn, drawable,
x1, y1, x2-x1, y2-y1, TRUE, TRUE);
}
alpha = (has_alpha) ? bpp - 1 : bpp;
/* Initialize progress */
progress = 0;
@ -810,10 +801,10 @@ nova (GimpDrawable *drawable,
if (preview_mode)
{
src_row = g_malloc (y2 * preview->rowstride);
save_src = src_row = g_new (guchar, y2 * preview->rowstride);
memcpy (src_row, preview->cache, y2 * preview->rowstride);
dest_row = g_malloc (preview->rowstride);
dest_row = g_new (guchar, preview->rowstride);
for (row = 0, y = 0; row < y2; row++, y++)
{
@ -851,7 +842,8 @@ nova (GimpDrawable *drawable,
ratio = nova_alpha;
compl_ratio = 1.0 - ratio;
/* red */
/* red or gray */
spokecol = (gdouble)spokecolor[i ].r * (1.0-c) +
(gdouble)spokecolor[(i+1) % pvals.nspoke].r * c;
@ -863,29 +855,32 @@ nova (GimpDrawable *drawable,
color.r += c;
dest[0] = CLAMP (color.r*255.0, 0, 255);
/* green */
spokecol = (gdouble)spokecolor[i ].g * (1.0-c) +
(gdouble)spokecolor[(i+1) % pvals.nspoke].g * c;
if (bpp>2)
{
/* green */
spokecol = (gdouble)spokecolor[i ].g * (1.0-c) +
(gdouble)spokecolor[(i+1) % pvals.nspoke].g * c;
if (w>1.0)
color.g = CLAMP (spokecol * w, 0.0, 1.0);
else
color.g = src[1]/255.0 * compl_ratio + spokecol * ratio;
c = CLAMP (w1 * w, 0.0, 1.0);
color.g += c;
dest[1] = CLAMP (color.g*255.0, 0, 255);
if (w>1.0)
color.g = CLAMP (spokecol * w, 0.0, 1.0);
else
color.g = src[1]/255.0 * compl_ratio + spokecol * ratio;
c = CLAMP (w1 * w, 0.0, 1.0);
color.g += c;
dest[1] = CLAMP (color.g*255.0, 0, 255);
/* blue */
spokecol = (gdouble)spokecolor[i ].b * (1.0-c) +
(gdouble)spokecolor[(i+1) % pvals.nspoke].b * c;
/* blue */
spokecol = (gdouble)spokecolor[i ].b * (1.0-c) +
(gdouble)spokecolor[(i+1) % pvals.nspoke].b * c;
if (w>1.0)
color.b = CLAMP (spokecol * w, 0.0, 1.0);
else
color.b = src[2]/255.0 * compl_ratio + spokecol * ratio;
c = CLAMP (w1 * w, 0.0, 1.0);
color.b += c;
dest[2] = CLAMP (color.b*255.0, 0, 255);
if (w>1.0)
color.b = CLAMP (spokecol * w, 0.0, 1.0);
else
color.b = src[2]/255.0 * compl_ratio + spokecol * ratio;
c = CLAMP (w1 * w, 0.0, 1.0);
color.b += c;
dest[2] = CLAMP (color.b*255.0, 0, 255);
}
/* alpha */
if (has_alpha)
@ -901,11 +896,14 @@ nova (GimpDrawable *drawable,
}
gtk_widget_queue_draw (preview->widget);
g_free (save_src);
g_free (dest_row);
}
else
{ /* normal mode */
for (pr = gimp_pixel_rgns_register (2, &src_rgn, &dest_rgn);
pr != NULL; pr = gimp_pixel_rgns_process (pr))
pr != NULL ;
pr = gimp_pixel_rgns_process (pr))
{
src_row = src_rgn.data;
dest_row = dest_rgn.data;
@ -983,7 +981,7 @@ nova (GimpDrawable *drawable,
else
color.g = src[1]/255.0 * compl_ratio + spokecol * ratio;
c = CLAMP (w1 * w, 0.0, 1.0);
color.r += c;
color.g += c;
dest[1] = CLAMP (color.g*255.0, 0, 255);
/* blue */
spokecol = (gdouble)spokecolor[i ].b * (1.0-c) +
@ -1021,4 +1019,5 @@ nova (GimpDrawable *drawable,
g_free (spoke);
g_free (spokecolor);
g_rand_free (gr);
}