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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2006 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Robin Allen
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/nodes/texture/nodes/node_texture_image.c
* \ingroup texnodes
*/
#include "node_texture_util.h"
#include "NOD_texture.h"
static bNodeSocketTemplate outputs[] = {
{ SOCK_RGBA, 0, N_("Image")},
{ -1, 0, "" }
};
static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **UNUSED(in), short UNUSED(thread))
{
float x = p->co[0];
float y = p->co[1];
Image *ima = (Image *)node->id;
ImageUser *iuser = (ImageUser *)node->storage;
if (ima) {
ImBuf *ibuf = BKE_image_acquire_ibuf(ima, iuser, NULL);
if (ibuf) {
float xsize, ysize;
float xoff, yoff;
int px, py;
float *result;
xsize = ibuf->x / 2;
ysize = ibuf->y / 2;
xoff = yoff = -1;
px = (int)( (x - xoff) * xsize);
py = (int)( (y - yoff) * ysize);
if ( (!xsize) || (!ysize) ) return;
if (!ibuf->rect_float) {
BLI_lock_thread(LOCK_IMAGE);
if (!ibuf->rect_float)
IMB_float_from_rect(ibuf);
BLI_unlock_thread(LOCK_IMAGE);
}
while (px < 0) px += ibuf->x;
while (py < 0) py += ibuf->y;
while (px >= ibuf->x) px -= ibuf->x;
while (py >= ibuf->y) py -= ibuf->y;
result = ibuf->rect_float + py * ibuf->x * 4 + px * 4;
copy_v4_v4(out, result);
BKE_image_release_ibuf(ima, ibuf, NULL);
}
}
}
static void exec(void *data, int UNUSED(thread), bNode *node, bNodeExecData *execdata, bNodeStack **in, bNodeStack **out)
{
tex_output(node, execdata, in, out[0], &colorfn, data);
}
static void init(bNodeTree *UNUSED(ntree), bNode *node)
{
ImageUser *iuser = MEM_callocN(sizeof(ImageUser), "node image user");
node->storage = iuser;
iuser->sfra = 1;
iuser->fie_ima = 2;
iuser->ok = 1;
}
void register_node_type_tex_image(void)
{
static bNodeType ntype;
tex_node_type_base(&ntype, TEX_NODE_IMAGE, "Image", NODE_CLASS_INPUT, NODE_PREVIEW);
node_type_socket_templates(&ntype, NULL, outputs);
node_type_init(&ntype, init);
node_type_storage(&ntype, "ImageUser", node_free_standard_storage, node_copy_standard_storage);
node_type_exec(&ntype, NULL, NULL, exec);
nodeRegisterType(&ntype);
}
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