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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 *****
*/
#include "../SHD_util.h"
/* **************** Hue Saturation ******************** */
static bNodeSocketType sh_node_hue_sat_in[]= {
{ SOCK_VALUE, 1, "Hue", 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
{ SOCK_VALUE, 1, "Saturation", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 2.0f},
{ SOCK_VALUE, 1, "Value", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 2.0f},
{ SOCK_VALUE, 1, "Fac", 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
{ SOCK_RGBA, 1, "Color", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
static bNodeSocketType sh_node_hue_sat_out[]= {
{ SOCK_RGBA, 0, "Color", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{ -1, 0, "" }
};
/* note: it would be possible to use CMP version for both nodes */
static void do_hue_sat_fac(bNode *UNUSED(node), float *out, float *hue, float *sat, float *val, float *in, float *fac)
{
if(*fac!=0.0f && (*hue!=0.5f || *sat!=1.0 || *val!=1.0)) {
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]>1.0) hsv[0]-=1.0; else if(hsv[0]<0.0) hsv[0]+= 1.0;
hsv[1]*= *sat;
hsv[2]*= *val;
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 node_shader_exec_hue_sat(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
do_hue_sat_fac(node, out[0]->vec, in[0]->vec, in[1]->vec, in[2]->vec, in[4]->vec, in[3]->vec);
}
static int gpu_shader_hue_sat(GPUMaterial *mat, bNode *UNUSED(node), GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, "hue_sat", in, out);
}
bNodeType sh_node_hue_sat= {
/* *next,*prev */ NULL, NULL,
/* type code */ SH_NODE_HUE_SAT,
/* name */ "Hue Saturation Value",
/* width+range */ 150, 80, 250,
/* class+opts */ NODE_CLASS_OP_COLOR, NODE_OPTIONS,
/* input sock */ sh_node_hue_sat_in,
/* output sock */ sh_node_hue_sat_out,
/* storage */ "",
/* execfunc */ node_shader_exec_hue_sat,
/* butfunc */ NULL,
/* initfunc */ NULL,
/* freestoragefunc */ NULL,
/* copystoragefunc */ NULL,
/* id */ NULL, NULL, NULL,
/* gpufunc */ gpu_shader_hue_sat
};
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