118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2006 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): gsr b3d, and a very minor edit from Robert Holcomb
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/nodes/intern/CMP_nodes/CMP_normalize.c
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* \ingroup cmpnodes
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*/
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#include "../CMP_util.h"
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/* **************** NORMALIZE single channel, useful for Z buffer ******************** */
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static bNodeSocketType cmp_node_normalize_in[]= {
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{ SOCK_VALUE, 1, "Value", 1.0f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{ -1, 0, "" }
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};
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static bNodeSocketType cmp_node_normalize_out[]= {
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{ SOCK_VALUE, 0, "Value", 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
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{ -1, 0, "" }
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};
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static void do_normalize(bNode *UNUSED(node), float *out, float *src, float *min, float *mult)
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{
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float res;
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res = (src[0] - min[0]) * mult[0];
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if (res > 1.0f) {
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out[0] = 1.0f;
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}
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else if (res < 0.0f) {
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out[0] = 0.0f;
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}
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else {
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out[0] = res;
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}
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}
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/* The code below assumes all data is inside range +- this, and that input buffer is single channel */
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#define BLENDER_ZMAX 10000.0f
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static void node_composit_exec_normalize(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
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{
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/* stack order in: valbuf */
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/* stack order out: valbuf */
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if(out[0]->hasoutput==0) return;
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/* Input has no image buffer? Then pass the value */
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if(in[0]->data==NULL) {
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QUATCOPY(out[0]->vec, in[0]->vec);
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}
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else {
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float min = 1.0f+BLENDER_ZMAX;
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float max = -1.0f-BLENDER_ZMAX;
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float mult = 1.0f;
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float *val;
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/* make output size of input image */
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CompBuf *cbuf= in[0]->data;
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int tot= cbuf->x*cbuf->y;
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CompBuf *stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_VAL, 1); /* allocs */
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for (val = cbuf->rect; tot; tot--, val++) {
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if ((*val > max) && (*val <= BLENDER_ZMAX)) {
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max = *val;
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}
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if ((*val < min) && (*val >= -BLENDER_ZMAX)) {
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min = *val;
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}
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}
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/* In the rare case of flat buffer, which would cause a divide by 0, just pass the input to the output */
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if ((max-min) != 0.0f) {
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mult = 1.0f/(max-min);
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composit3_pixel_processor(node, stackbuf, in[0]->data, in[0]->vec, NULL, &min, NULL, &mult, do_normalize, CB_VAL, CB_VAL, CB_VAL);
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} else {
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memcpy(stackbuf->rect, cbuf->rect, sizeof(float) * cbuf->x * cbuf->y);
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}
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out[0]->data= stackbuf;
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}
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}
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void register_node_type_cmp_normalize(ListBase *lb)
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{
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static bNodeType ntype;
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node_type_base(&ntype, CMP_NODE_NORMALIZE, "Normalize", NODE_CLASS_OP_VECTOR, NODE_OPTIONS,
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cmp_node_normalize_in, cmp_node_normalize_out);
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node_type_size(&ntype, 100, 60, 150);
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node_type_exec(&ntype, node_composit_exec_normalize);
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node_type_storage(&ntype, "TexMapping", NULL, NULL);
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nodeRegisterType(lb, &ntype);
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}
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