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some code cleanup I've done while looking at bug #128146. 

2003-12-01  Sven Neumann  <sven@gimp.org>

	* app/core/gimpdrawable-blend.c: some code cleanup I've done while
	looking at bug #128146.
This commit is contained in:
Sven Neumann 2003-12-01 14:32:42 +00:00 committed by Sven Neumann
parent 8842730435
commit 56cbe6f625
2 changed files with 125 additions and 117 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2003-12-01 Sven Neumann <sven@gimp.org>
* app/core/gimpdrawable-blend.c: some code cleanup I've done while
looking at bug #128146.
2003-12-01 Michael Natterer <mitch@gimp.org>
* app/core/gimpimage.c: added a default implementation of

237
app/core/gimpdrawable-blend.c
View File

@ -43,7 +43,7 @@
#include "gimp-intl.h"
typedef gdouble (* BlendRepeatFunc) (gdouble);
typedef gdouble (* BlendRepeatFunc) (gdouble val);
typedef struct
@ -73,86 +73,86 @@ typedef struct
/* local function prototypes */
static gdouble gradient_calc_conical_sym_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_conical_asym_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_square_factor (gdouble dist,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_radial_factor (gdouble dist,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_linear_factor (gdouble dist,
gdouble *vec,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_bilinear_factor (gdouble dist,
gdouble *vec,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_spiral_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y,
gint cwise);
static gdouble gradient_calc_conical_sym_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_conical_asym_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_square_factor (gdouble dist,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_radial_factor (gdouble dist,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_linear_factor (gdouble dist,
gdouble *vec,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_bilinear_factor (gdouble dist,
gdouble *vec,
gdouble offset,
gdouble x,
gdouble y);
static gdouble gradient_calc_spiral_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y,
gboolean clockwise);
static gdouble gradient_calc_shapeburst_angular_factor (gdouble x,
gdouble y);
static gdouble gradient_calc_shapeburst_spherical_factor (gdouble x,
gdouble y);
static gdouble gradient_calc_shapeburst_dimpled_factor (gdouble x,
gdouble y);
static gdouble gradient_calc_shapeburst_angular_factor (gdouble x,
gdouble y);
static gdouble gradient_calc_shapeburst_spherical_factor (gdouble x,
gdouble y);
static gdouble gradient_calc_shapeburst_dimpled_factor (gdouble x,
gdouble y);
static gdouble gradient_repeat_none (gdouble val);
static gdouble gradient_repeat_sawtooth (gdouble val);
static gdouble gradient_repeat_triangular (gdouble val);
static gdouble gradient_repeat_none (gdouble val);
static gdouble gradient_repeat_sawtooth (gdouble val);
static gdouble gradient_repeat_triangular (gdouble val);
static void gradient_precalc_shapeburst (GimpImage *gimage,
GimpDrawable *drawable,
PixelRegion *PR,
gdouble dist);
static void gradient_precalc_shapeburst (GimpImage *gimage,
GimpDrawable *drawable,
PixelRegion *PR,
gdouble dist);
static void gradient_render_pixel (gdouble x,
gdouble y,
GimpRGB *color,
gpointer render_data);
static void gradient_put_pixel (gint x,
gint y,
GimpRGB *color,
gpointer put_pixel_data);
static void gradient_render_pixel (gdouble x,
gdouble y,
GimpRGB *color,
gpointer render_data);
static void gradient_put_pixel (gint x,
gint y,
GimpRGB *color,
gpointer put_pixel_data);
static void gradient_fill_region (GimpImage *gimage,
GimpDrawable *drawable,
PixelRegion *PR,
gint width,
gint height,
GimpBlendMode blend_mode,
GimpGradientType gradient_type,
gdouble offset,
static void gradient_fill_region (GimpImage *gimage,
GimpDrawable *drawable,
PixelRegion *PR,
gint width,
gint height,
GimpBlendMode blend_mode,
GimpGradientType gradient_type,
gdouble offset,
GimpRepeatMode repeat,
gboolean reverse,
gboolean supersample,
gint max_depth,
gdouble threshold,
gboolean dither,
gdouble sx,
gdouble sy,
gdouble ex,
gdouble ey,
GimpProgressFunc progress_callback,
gpointer progress_data);
gboolean reverse,
gboolean supersample,
gint max_depth,
gdouble threshold,
gboolean dither,
gdouble sx,
gdouble sy,
gdouble ex,
gdouble ey,
GimpProgressFunc progress_callback,
gpointer progress_data);
/* variables for the shapeburst algs */
@ -194,8 +194,6 @@ gimp_drawable_blend (GimpDrawable *drawable,
GimpImage *gimage;
TileManager *buf_tiles;
PixelRegion bufPR;
gint has_alpha;
gint has_selection;
gint bytes;
gint x1, y1, x2, y2;
@ -207,15 +205,13 @@ gimp_drawable_blend (GimpDrawable *drawable,
gimp_set_busy (gimage->gimp);
has_selection = gimp_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
gimp_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
has_alpha = gimp_drawable_has_alpha (drawable);
bytes = gimp_drawable_bytes (drawable);
bytes = gimp_drawable_bytes (drawable);
/* Always create an alpha temp buf (for generality) */
if (! has_alpha)
if (! gimp_drawable_has_alpha (drawable))
{
has_alpha = TRUE;
bytes += 1;
}
@ -474,12 +470,12 @@ gradient_calc_bilinear_factor (gdouble dist,
}
static gdouble
gradient_calc_spiral_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y,
gint cwise)
gradient_calc_spiral_factor (gdouble dist,
gdouble *axis,
gdouble offset,
gdouble x,
gdouble y,
gboolean clockwise)
{
gdouble ang0, ang1;
gdouble ang, r;
@ -495,10 +491,11 @@ gradient_calc_spiral_factor (gdouble dist,
{
ang0 = atan2 (axis[0], axis[1]) + G_PI;
ang1 = atan2 (x, y) + G_PI;
if(!cwise)
ang = ang0 - ang1;
else
if (clockwise)
ang = ang1 - ang0;
else
ang = ang0 - ang1;
if (ang < 0.0)
ang += (2.0 * G_PI);
@ -525,7 +522,9 @@ gradient_calc_shapeburst_angular_factor (gdouble x,
ix = (gint) CLAMP (x, 0.0, distR.w);
iy = (gint) CLAMP (y, 0.0, distR.h);
tile = tile_manager_get_tile (distR.tiles, ix, iy, TRUE, FALSE);
value = 1.0 - *((float *) tile_data_pointer (tile, ix % TILE_WIDTH, iy % TILE_HEIGHT));
value = 1.0 - *((float *) tile_data_pointer (tile,
ix % TILE_WIDTH,
iy % TILE_HEIGHT));
tile_release (tile, FALSE);
return value;
@ -543,7 +542,9 @@ gradient_calc_shapeburst_spherical_factor (gdouble x,
ix = (gint) CLAMP (x, 0.0, distR.w);
iy = (gint) CLAMP (y, 0.0, distR.h);
tile = tile_manager_get_tile (distR.tiles, ix, iy, TRUE, FALSE);
value = *((gfloat *) tile_data_pointer (tile, ix % TILE_WIDTH, iy % TILE_HEIGHT));
value = *((gfloat *) tile_data_pointer (tile,
ix % TILE_WIDTH,
iy % TILE_HEIGHT));
value = 1.0 - sin (0.5 * G_PI * value);
tile_release (tile, FALSE);
@ -562,13 +563,16 @@ gradient_calc_shapeburst_dimpled_factor (gdouble x,
ix = (gint) CLAMP (x, 0.0, distR.w);
iy = (gint) CLAMP (y, 0.0, distR.h);
tile = tile_manager_get_tile (distR.tiles, ix, iy, TRUE, FALSE);
value = *((float *) tile_data_pointer (tile, ix % TILE_WIDTH, iy % TILE_HEIGHT));
value = *((float *) tile_data_pointer (tile,
ix % TILE_WIDTH,
iy % TILE_HEIGHT));
value = cos (0.5 * G_PI * value);
tile_release (tile, FALSE);
return value;
}
static gdouble
gradient_repeat_none (gdouble val)
{
@ -598,7 +602,7 @@ gradient_repeat_triangular (gdouble val)
return val;
}
/*****/
static void
gradient_precalc_shapeburst (GimpImage *gimage,
GimpDrawable *drawable,
@ -759,7 +763,7 @@ gradient_render_pixel (double x,
/* Adjust for repeat */
factor = (*rbd->repeat_func) (factor);
factor = rbd->repeat_func (factor);
/* Blend the colors */
@ -781,9 +785,7 @@ gradient_render_pixel (double x,
if (rbd->blend_mode == GIMP_FG_BG_HSV_MODE)
{
GimpHSV hsv;
hsv = *((GimpHSV *) color);
GimpHSV hsv = *((GimpHSV *) color);
gimp_hsv_to_rgb (&hsv, color);
}
@ -791,10 +793,10 @@ gradient_render_pixel (double x,
}
static void
gradient_put_pixel (int x,
int y,
GimpRGB *color,
void *put_pixel_data)
gradient_put_pixel (gint x,
gint y,
GimpRGB *color,
gpointer put_pixel_data)
{
PutPixelData *ppd;
guchar *data;
@ -816,24 +818,28 @@ gradient_put_pixel (int x,
ftmp = color->r * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (ppd->dither_rand) < dither_prob)
color->r += (1.0 / 255.0);
ftmp = color->g * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (ppd->dither_rand) < dither_prob)
color->g += (1.0 / 255.0);
ftmp = color->b * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (ppd->dither_rand) < dither_prob)
color->b += (1.0 / 255.0);
ftmp = color->a * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (ppd->dither_rand) < dither_prob)
color->a += (1.0 / 255.0);
@ -862,12 +868,14 @@ gradient_put_pixel (int x,
ftmp = gray * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (ppd->dither_rand) < dither_prob)
gray += (1.0 / 255.0);
ftmp = color->a * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (ppd->dither_rand) < dither_prob)
color->a += (1.0 / 255.0);
@ -908,7 +916,6 @@ gradient_fill_region (GimpImage *gimage,
gpointer progress_data)
{
RenderBlendData rbd;
PutPixelData ppd;
gint x, y;
gint endx, endy;
gpointer pr;
@ -922,16 +929,9 @@ gradient_fill_region (GimpImage *gimage,
rbd.gradient = gimp_context_get_gradient (context);
rbd.reverse = reverse;
/* Get foreground and background colors, normalized */
gimp_context_get_foreground (context, &rbd.fg);
/* rbd.fg.a = 1.0; */ /* Foreground is always opaque */
gimp_context_get_background (context, &rbd.bg);
/* rbd.bg.a = 1.0; */ /* opaque, for now */
switch (blend_mode)
{
case GIMP_FG_BG_RGB_MODE:
@ -955,7 +955,7 @@ gradient_fill_region (GimpImage *gimage,
/* Color does not change, just the opacity */
rbd.bg = rbd.fg;
rbd.bg.a = 0.0; /* transparent */
rbd.bg.a = GIMP_OPACITY_TRANSPARENT;
break;
case GIMP_CUSTOM_MODE:
@ -971,7 +971,7 @@ gradient_fill_region (GimpImage *gimage,
switch (gradient_type)
{
case GIMP_GRADIENT_RADIAL:
rbd.dist = sqrt(SQR(ex - sx) + SQR(ey - sy));
rbd.dist = sqrt (SQR (ex - sx) + SQR (ey - sy));
break;
case GIMP_GRADIENT_SQUARE:
@ -1042,7 +1042,7 @@ gradient_fill_region (GimpImage *gimage,
if (supersample)
{
/* Initialize put pixel data */
PutPixelData ppd;
ppd.PR = PR;
ppd.row_data = g_malloc (width * PR->bytes);
@ -1050,7 +1050,6 @@ gradient_fill_region (GimpImage *gimage,
ppd.width = width;
ppd.dither = dither;
ppd.dither_rand = dither_rand;
/* Render! */
gimp_adaptive_supersample_area (0, 0, (width - 1), (height - 1),
max_depth, threshold,
@ -1058,8 +1057,6 @@ gradient_fill_region (GimpImage *gimage,
gradient_put_pixel, &ppd,
progress_callback, progress_data);
/* Clean up */
g_free (ppd.row_data);
}
else
@ -1092,24 +1089,28 @@ gradient_fill_region (GimpImage *gimage,
ftmp = color.r * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (dither_rand) < dither_prob)
color.r += (1.0 / 255.0);
ftmp = color.g * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (dither_rand) < dither_prob)
color.g += (1.0 / 255.0);
ftmp = color.b * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (dither_rand) < dither_prob)
color.b += (1.0 / 255.0);
ftmp = color.a * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (dither_rand) < dither_prob)
color.a += (1.0 / 255.0);
@ -1138,12 +1139,14 @@ gradient_fill_region (GimpImage *gimage,
ftmp = gray * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (dither_rand) < dither_prob)
gray += (1.0 / 255.0);
ftmp = color.a * 255.0;
itmp = ftmp;
dither_prob = ftmp - itmp;
if (g_rand_double (dither_rand) < dither_prob)
color.a += (1.0 / 255.0);