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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): Juho Vepsäläinen
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/nodes/texture/nodes/node_texture_hueSatVal.c
* \ingroup texnodes
*/
#include "node_texture_util.h"
#include "NOD_texture.h"
static bNodeSocketTemplate inputs[]= {
{ SOCK_FLOAT, 1, "Hue", 0.0f, 0.0f, 0.0f, 0.0f, -0.5f, 0.5f, PROP_NONE },
{ SOCK_FLOAT, 1, "Saturation", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 2.0f, PROP_FACTOR },
{ SOCK_FLOAT, 1, "Value", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 2.0f, PROP_FACTOR },
{ SOCK_FLOAT, 1, "Factor", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR },
{ SOCK_RGBA, 1, "Color", 0.8f, 0.8f, 0.8f, 1.0f },
{ -1, 0, "" }
};
static bNodeSocketTemplate outputs[]= {
{ SOCK_RGBA, 0, "Color" },
{ -1, 0, "" }
};
static void do_hue_sat_fac(bNode *UNUSED(node), float *out, float hue, float sat, float val, float *in, float fac)
{
if(fac != 0 && (hue != 0.5f || sat != 1 || val != 1)) {
float col[3], hsv[3], mfac= 1.0f - fac;
rgb_to_hsv(in[0], in[1], in[2], hsv, hsv+1, hsv+2);
hsv[0]+= (hue - 0.5f);
if(hsv[0]>1.0f) hsv[0]-=1.0f; else if(hsv[0]<0.0f) hsv[0]+= 1.0f;
hsv[1]*= sat;
if(hsv[1]>1.0f) hsv[1]= 1.0f; else if(hsv[1]<0.0f) hsv[1]= 0.0f;
hsv[2]*= val;
if(hsv[2]>1.0f) hsv[2]= 1.0f; else if(hsv[2]<0.0f) hsv[2]= 0.0f;
hsv_to_rgb(hsv[0], hsv[1], hsv[2], col, col+1, col+2);
out[0]= mfac*in[0] + fac*col[0];
out[1]= mfac*in[1] + fac*col[1];
out[2]= mfac*in[2] + fac*col[2];
}
else {
QUATCOPY(out, in);
}
}
static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, short thread)
{
float hue = tex_input_value(in[0], p, thread);
float sat = tex_input_value(in[1], p, thread);
float val = tex_input_value(in[2], p, thread);
float fac = tex_input_value(in[3], p, thread);
float col[4];
tex_input_rgba(col, in[4], p, thread);
hue += 0.5f; /* [-.5, .5] -> [0, 1] */
do_hue_sat_fac(node, out, hue, sat, val, col, fac);
out[3] = col[3];
}
static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
tex_output(node, in, out[0], &colorfn, data);
}
void register_node_type_tex_hue_sat(ListBase *lb)
{
static bNodeType ntype;
node_type_base(&ntype, TEX_NODE_HUE_SAT, "Hue Saturation Value", NODE_CLASS_OP_COLOR, NODE_OPTIONS);
node_type_socket_templates(&ntype, inputs, outputs);
node_type_size(&ntype, 150, 80, 250);
node_type_exec(&ntype, exec);
nodeRegisterType(lb, &ntype);
}
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