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also implement brush dynamics emulation for stroking selections. 

2008-07-23  Sven Neumann  <sven@gimp.org>

	* app/paint/gimppaintcore-stroke.[ch]: also implement brush
	dynamics emulation for stroking selections.

	* app/core/gimpchannel.c: pass the 'emulate-dynamics' parameter 
to
	gimp_paint_core_stroke_boundary().


svn path=/trunk/; revision=26293
This commit is contained in:
Sven Neumann 2008-07-23 12:20:45 +00:00 committed by Sven Neumann
parent 7c389ba534
commit 5624a717fe
4 changed files with 28 additions and 12 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2008-07-23 Sven Neumann <sven@gimp.org>
* app/paint/gimppaintcore-stroke.[ch]: also implement brush
dynamics emulation for stroking selections.
* app/core/gimpchannel.c: pass the 'emulate-dynamics' parameter to
gimp_paint_core_stroke_boundary().
2008-07-23 Sven Neumann <sven@gimp.org>
* app/widgets/gimpsessioninfo.c (gimp_session_info_get_geometry):

1
app/core/gimpchannel.c
View File

@ -712,6 +712,7 @@ gimp_channel_stroke (GimpItem *item,
retval = gimp_paint_core_stroke_boundary (core, drawable,
stroke_desc->paint_options,
stroke_desc->emulate_dynamics,
segs_in, n_segs_in,
offset_x, offset_y,
error);

30
app/paint/gimppaintcore-stroke.c
View File

@ -34,7 +34,8 @@
#include "gimppaintoptions.h"
static void gimp_paint_core_stroke_emulate_dynamics (GArray *coords);
static void gimp_paint_core_stroke_emulate_dynamics (GimpCoords *coords,
gint len);
static const GimpCoords default_coords = GIMP_COORDS_DEFAULT_VALUES;
@ -93,6 +94,7 @@ gboolean
gimp_paint_core_stroke_boundary (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
gboolean emulate_dynamics,
const BoundSeg *bound_segs,
gint n_bound_segs,
gint offset_x,
@ -162,6 +164,9 @@ gimp_paint_core_stroke_boundary (GimpPaintCore *core,
n_coords++;
if (emulate_dynamics)
gimp_paint_core_stroke_emulate_dynamics (coords, n_coords);
if (initialized ||
gimp_paint_core_start (core, drawable, paint_options, &coords[0],
error))
@ -262,7 +267,8 @@ gimp_paint_core_stroke_vectors (GimpPaintCore *core,
}
if (emulate_dynamics)
gimp_paint_core_stroke_emulate_dynamics (coords);
gimp_paint_core_stroke_emulate_dynamics ((GimpCoords *) coords->data,
coords->len);
if (initialized ||
gimp_paint_core_start (core, drawable, paint_options,
@ -314,9 +320,10 @@ gimp_paint_core_stroke_vectors (GimpPaintCore *core,
}
static void
gimp_paint_core_stroke_emulate_dynamics (GArray *coords)
gimp_paint_core_stroke_emulate_dynamics (GimpCoords *coords,
gint len)
{
const gint pressure_length = coords->len / 3;
const gint pressure_length = len / 3;
/* Calculate and create pressure ramp parameters */
if (pressure_length > 0)
@ -327,27 +334,26 @@ gimp_paint_core_stroke_emulate_dynamics (GArray *coords)
/* Calculate pressure start ramp */
for (i = 0; i < pressure_length; i++)
{
g_array_index (coords, GimpCoords, i).pressure = i * step;
coords[i].pressure = i * step;
}
/* Calculate pressure end ramp */
for (i = coords->len - pressure_length; i < coords->len; i++)
for (i = len - pressure_length; i < len; i++)
{
g_array_index (coords, GimpCoords, i).pressure =
1.0 - (i - (coords->len - pressure_length)) * step;
coords[i].pressure = 1.0 - (i - (len - pressure_length)) * step;
}
}
/* Calculate and create velocity ramp parameters */
if (coords->len > 0)
if (len > 0)
{
gdouble step = 1.0 / coords->len;
gdouble step = 1.0 / len;
gint i;
/* Calculate velocity end ramp */
for (i = 0; i < coords->len; i++)
for (i = 0; i < len; i++)
{
g_array_index (coords, GimpCoords, i).velocity = i * step;
coords[i].velocity = i * step;
}
}
}

1
app/paint/gimppaintcore-stroke.h
View File

@ -29,6 +29,7 @@ gboolean gimp_paint_core_stroke (GimpPaintCore *core,
gboolean gimp_paint_core_stroke_boundary (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
gboolean emulate_dynamics,
const BoundSeg *bound_segs,
gint n_bound_segs,
gint offset_x,