[gimp/soc-2011-warp: 7/18] gimpwarptool: proof of concept code to act on the coords buffer
- From: Michael Muré <mmure src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gimp/soc-2011-warp: 7/18] gimpwarptool: proof of concept code to act on the coords buffer
- Date: Sat, 4 Jun 2011 16:18:25 +0000 (UTC)
commit 7babf8c5b063b238cf69130e152b76aed6dbac78
Author: Michael Muré <batolettre gmail com>
Date: Wed May 25 21:40:47 2011 +0200
gimpwarptool: proof of concept code to act on the coords buffer
app/tools/gimpwarptool.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 46 insertions(+), 0 deletions(-)
---
diff --git a/app/tools/gimpwarptool.c b/app/tools/gimpwarptool.c
index 868f114..aed2a85 100644
--- a/app/tools/gimpwarptool.c
+++ b/app/tools/gimpwarptool.c
@@ -102,6 +102,9 @@ static void gimp_warp_tool_create_image_map (GimpWarpTool *wt,
static void gimp_warp_tool_image_map_flush (GimpImageMap *image_map,
GimpTool *tool);
static void gimp_warp_tool_image_map_update (GimpWarpTool *wt);
+static void gimp_warp_tool_act_on_coords (GimpWarpTool *wt,
+ gint x,
+ gint y);
G_DEFINE_TYPE (GimpWarpTool, gimp_warp_tool, GIMP_TYPE_DRAW_TOOL)
@@ -348,6 +351,7 @@ gimp_warp_tool_button_press (GimpTool *tool,
if (display != tool->display)
gimp_warp_tool_start (wt, display);
+ gimp_warp_tool_act_on_coords (wt, coords->x, coords->y);
gimp_warp_tool_image_map_update (wt);
gimp_tool_control_activate (tool->control);
@@ -496,3 +500,45 @@ gimp_warp_tool_image_map_update (GimpWarpTool *wt)
gimp_image_map_apply (wt->image_map, &visible);
}
+
+static void
+gimp_warp_tool_act_on_coords (GimpWarpTool *wt,
+ gint x,
+ gint y)
+{
+ GeglBufferIterator *it;
+ Babl *format;
+ GeglRectangle area = {x - 30,
+ y - 30,
+ 60,
+ 60};
+
+ format = babl_format_n (babl_type ("float"), 2);
+ it = gegl_buffer_iterator_new (wt->coords_buffer, &area, format, GEGL_BUFFER_READWRITE);
+
+ while (gegl_buffer_iterator_next (it))
+ {
+ /* iterate inside the roi */
+ gint n_pixels = it->length;
+ gfloat *coords = it->data[0];
+
+ x = it->roi->x; /* initial x */
+ y = it->roi->y; /* and y coordinates */
+
+ while (n_pixels--)
+ {
+ coords[0] += 2;
+ coords[1] += 2;
+
+ coords += 2;
+
+ /* update x and y coordinates */
+ x++;
+ if (x >= (it->roi->x + it->roi->width))
+ {
+ x = it->roi->x;
+ y++;
+ }
+ }
+ }
+}
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