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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): gsr b3d, and a very minor edit from Robert Holcomb
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "../CMP_util.h"
/* **************** NORMALIZE single channel, useful for Z buffer ******************** */
static bNodeSocketType cmp_node_normalize_in[]= {
{ SOCK_VALUE, 1, "Value", 1.0f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
static bNodeSocketType cmp_node_normalize_out[]= {
{ SOCK_VALUE, 0, "Value", 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
static void do_normalize(bNode *UNUSED(node), float *out, float *src, float *min, float *mult)
{
float res;
res = (src[0] - min[0]) * mult[0];
if (res > 1.0f) {
out[0] = 1.0f;
}
else if (res < 0.0f) {
out[0] = 0.0f;
}
else {
out[0] = res;
}
}
/* The code below assumes all data is inside range +- this, and that input buffer is single channel */
#define BLENDER_ZMAX 10000.0f
static void node_composit_exec_normalize(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
/* stack order in: valbuf */
/* stack order out: valbuf */
if(out[0]->hasoutput==0) return;
/* Input has no image buffer? Then pass the value */
if(in[0]->data==NULL) {
QUATCOPY(out[0]->vec, in[0]->vec);
}
else {
float min = 1.0f+BLENDER_ZMAX;
float max = -1.0f-BLENDER_ZMAX;
float mult = 1.0f;
float *val;
/* make output size of input image */
CompBuf *cbuf= in[0]->data;
int tot= cbuf->x*cbuf->y;
CompBuf *stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_VAL, 1); /* allocs */
for (val = cbuf->rect; tot; tot--, val++) {
if ((*val > max) && (*val <= BLENDER_ZMAX)) {
max = *val;
}
if ((*val < min) && (*val >= -BLENDER_ZMAX)) {
min = *val;
}
}
/* In the rare case of flat buffer, which would cause a divide by 0, just pass the input to the output */
if ((max-min) != 0.0f) {
mult = 1.0f/(max-min);
composit3_pixel_processor(node, stackbuf, in[0]->data, in[0]->vec, NULL, &min, NULL, &mult, do_normalize, CB_VAL, CB_VAL, CB_VAL);
} else {
memcpy(stackbuf->rect, cbuf->rect, sizeof(float) * cbuf->x * cbuf->y);
}
out[0]->data= stackbuf;
}
}
bNodeType cmp_node_normalize= {
/* *next, *prev*/ NULL, NULL,
/* type code */ CMP_NODE_NORMALIZE,
/* name */ "Normalize",
/* width+range */ 100, 60, 150,
/* class+opts */ NODE_CLASS_OP_VECTOR, NODE_OPTIONS,
/* input sock */ cmp_node_normalize_in,
/* output sock */ cmp_node_normalize_out,
/* storage */ "TexMapping",
/* execfunc */ node_composit_exec_normalize,
/* butfunc */ NULL,
/* initfunc */ NULL,
/* freestoragefunc */ NULL,
/* copystoragefunc */ NULL,
/* id */ NULL
};
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