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/*
* $Id$
*
* ***** 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): Alfredo de Greef (eeshlo)
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/nodes/composite/nodes/node_composite_directionalblur.c
* \ingroup cmpnodes
*/
#include "node_composite_util.h"
static bNodeSocketTemplate cmp_node_dblur_in[]= {
{ SOCK_RGBA, 1, "Image", 0.8f, 0.8f, 0.8f, 1.f},
{ -1, 0, "" }
};
static bNodeSocketTemplate cmp_node_dblur_out[]= {
{ SOCK_RGBA, 0, "Image"},
{ -1, 0, "" }
};
static CompBuf *dblur(bNode *node, CompBuf *img, int iterations, int wrap,
float center_x, float center_y, float dist, float angle, float spin, float zoom)
{
if ((dist != 0.f) || (spin != 0.f) || (zoom != 0.f)) {
void (*getpix)(CompBuf*, float, float, float*) = wrap ? qd_getPixelLerpWrap : qd_getPixelLerp;
const float a= angle * (float)M_PI / 180.f;
const float itsc= 1.f / pow(2.f, (float)iterations);
float D;
float center_x_pix, center_y_pix;
float tx, ty;
float sc, rot;
CompBuf *tmp;
int i, j;
tmp= dupalloc_compbuf(img);
D= dist * sqrtf(img->x * img->x + img->y * img->y);
center_x_pix= center_x * img->x;
center_y_pix= center_y * img->y;
tx= itsc * D * cos(a);
ty= -itsc * D * sin(a);
sc= itsc * zoom;
rot= itsc * spin * (float)M_PI / 180.f;
/* blur the image */
for(i= 0; i < iterations; ++i) {
const float cs= cos(rot), ss= sin(rot);
const float isc= 1.f / (1.f + sc);
unsigned int x, y;
float col[4]= {0,0,0,0};
for(y= 0; y < img->y; ++y) {
const float v= isc * (y - center_y_pix) + ty;
for(x= 0; x < img->x; ++x) {
const float u= isc * (x - center_x_pix) + tx;
unsigned int p= (x + y * img->x) * img->type;
getpix(tmp, cs * u + ss * v + center_x_pix, cs * v - ss * u + center_y_pix, col);
/* mix img and transformed tmp */
for(j= 0; j < 4; ++j)
img->rect[p + j]= AVG2(img->rect[p + j], col[j]);
}
}
/* copy img to tmp */
if(i != (iterations - 1))
memcpy(tmp->rect, img->rect, sizeof(float) * img->x * img->y * img->type);
/* double transformations */
tx *= 2.f, ty *= 2.f;
sc *= 2.f, rot *= 2.f;
if(node->exec & NODE_BREAK) break;
}
free_compbuf(tmp);
}
return img;
}
static void node_composit_exec_dblur(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
NodeDBlurData *ndbd= node->storage;
CompBuf *new, *img= in[0]->data;
if((img == NULL) || (out[0]->hasoutput == 0)) return;
if (img->type != CB_RGBA)
new = typecheck_compbuf(img, CB_RGBA);
else
new = dupalloc_compbuf(img);
out[0]->data= dblur(node, new, ndbd->iter, ndbd->wrap, ndbd->center_x, ndbd->center_y, ndbd->distance, ndbd->angle, ndbd->spin, ndbd->zoom);
}
static void node_composit_init_dblur(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
NodeDBlurData *ndbd= MEM_callocN(sizeof(NodeDBlurData), "node dblur data");
node->storage= ndbd;
ndbd->center_x= 0.5;
ndbd->center_y= 0.5;
}
void register_node_type_cmp_dblur(ListBase *lb)
{
static bNodeType ntype;
node_type_base(&ntype, CMP_NODE_DBLUR, "Directional Blur", NODE_CLASS_OP_FILTER, NODE_OPTIONS);
node_type_socket_templates(&ntype, cmp_node_dblur_in, cmp_node_dblur_out);
node_type_size(&ntype, 150, 120, 200);
node_type_init(&ntype, node_composit_init_dblur);
node_type_storage(&ntype, "NodeDBlurData", node_free_standard_storage, node_copy_standard_storage);
node_type_exec(&ntype, node_composit_exec_dblur);
nodeRegisterType(lb, &ntype);
}
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