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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): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/nodes/composite/nodes/node_composite_invert.c
* \ingroup cmpnodes
*/
#include "node_composite_util.h"
/* **************** INVERT ******************** */
static bNodeSocketTemplate cmp_node_invert_in[]= {
{ SOCK_FLOAT, 1, N_("Fac"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
{ SOCK_RGBA, 1, N_("Color"), 1.0f, 1.0f, 1.0f, 1.0f},
{ -1, 0, "" }
};
static bNodeSocketTemplate cmp_node_invert_out[]= {
{ SOCK_RGBA, 0, N_("Color")},
{ -1, 0, "" }
};
static void do_invert(bNode *node, float *out, float *in)
{
if (node->custom1 & CMP_CHAN_RGB) {
out[0] = 1.0f - in[0];
out[1] = 1.0f - in[1];
out[2] = 1.0f - in[2];
}
else {
copy_v3_v3(out, in);
}
if (node->custom1 & CMP_CHAN_A)
out[3] = 1.0f - in[3];
else
out[3] = in[3];
}
static void do_invert_fac(bNode *node, float *out, float *in, float *fac)
{
float col[4], facm;
do_invert(node, col, in);
/* blend inverted result against original input with fac */
facm = 1.0f - fac[0];
if (node->custom1 & CMP_CHAN_RGB) {
col[0] = fac[0]*col[0] + (facm*in[0]);
col[1] = fac[0]*col[1] + (facm*in[1]);
col[2] = fac[0]*col[2] + (facm*in[2]);
}
if (node->custom1 & CMP_CHAN_A)
col[3] = fac[0]*col[3] + (facm*in[3]);
copy_v4_v4(out, col);
}
static void node_composit_exec_invert(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
/* stack order in: fac, Image, Image */
/* stack order out: Image */
float *fac= in[0]->vec;
if (out[0]->hasoutput==0) return;
/* input no image? then only color operation */
if (in[1]->data==NULL && in[0]->data==NULL) {
do_invert_fac(node, out[0]->vec, in[1]->vec, fac);
}
else {
/* make output size of first available input image, or then size of fac */
CompBuf *cbuf= in[1]->data?in[1]->data:in[0]->data;
/* if neither RGB or A toggled on, pass through */
if (node->custom1 != 0) {
CompBuf *stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_RGBA, 1); /* allocs */
if (fac[0] < 1.0f || in[0]->data!=NULL)
composit2_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, in[0]->data, fac, do_invert_fac, CB_RGBA, CB_VAL);
else
composit1_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, do_invert, CB_RGBA);
out[0]->data= stackbuf;
return;
}
else {
out[0]->data = pass_on_compbuf(cbuf);
return;
}
}
}
static void node_composit_init_invert(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
node->custom1 |= CMP_CHAN_RGB;
}
/* custom1 = mix type */
void register_node_type_cmp_invert(bNodeTreeType *ttype)
{
static bNodeType ntype;
node_type_base(ttype, &ntype, CMP_NODE_INVERT, "Invert", NODE_CLASS_OP_COLOR, NODE_OPTIONS);
node_type_socket_templates(&ntype, cmp_node_invert_in, cmp_node_invert_out);
node_type_size(&ntype, 120, 120, 140);
node_type_init(&ntype, node_composit_init_invert);
node_type_exec(&ntype, node_composit_exec_invert);
nodeRegisterType(ttype, &ntype);
}
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