/**
 * $Id$
 *
 * ***** 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) 2005 Blender Foundation.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "../SHD_util.h"


/* **************** CURVE VEC  ******************** */
static bNodeSocketType sh_node_curve_vec_in[]= {
	{	SOCK_VALUE, 0, "Fac",	1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f},
	{	SOCK_VECTOR, 1, "Vector",	0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f},
	{	-1, 0, ""	}
};

static bNodeSocketType sh_node_curve_vec_out[]= {
	{	SOCK_VECTOR, 0, "Vector",	0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 1.0f},
	{	-1, 0, ""	}
};

static void node_shader_exec_curve_vec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
	float vec[3];
	
	/* stack order input:  vec */
	/* stack order output: vec */
	nodestack_get_vec(vec, SOCK_VECTOR, in[1]);
	curvemapping_evaluate3F(node->storage, out[0]->vec, vec);
}

static void node_shader_init_curve_vec(bNode* node)
{
   node->storage= curvemapping_add(3, -1.0f, -1.0f, 1.0f, 1.0f);
}

static int gpu_shader_curve_vec(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
	float *array;
	int size;

	curvemapping_table_RGBA(node->storage, &array, &size);
	return GPU_stack_link(mat, "curves_vec", in, out, GPU_texture(size, array));
}

bNodeType sh_node_curve_vec= {
	/* *next,*prev */	NULL, NULL,
	/* type code   */	SH_NODE_CURVE_VEC,
	/* name        */	"Vector Curves",
	/* width+range */	200, 140, 320,
	/* class+opts  */	NODE_CLASS_OP_VECTOR, NODE_OPTIONS,
	/* input sock  */	sh_node_curve_vec_in,
	/* output sock */	sh_node_curve_vec_out,
	/* storage     */	"CurveMapping",
	/* execfunc    */	node_shader_exec_curve_vec,
	/* butfunc     */	NULL,
	/* initfunc    */	node_shader_init_curve_vec,
	/* freestoragefunc    */	node_free_curves,
	/* copystoragefunc    */	node_copy_curves,
	/* id          */	NULL, NULL, NULL,
	/* gpufunc     */	gpu_shader_curve_vec
	
};

/* **************** CURVE RGB  ******************** */
static bNodeSocketType sh_node_curve_rgb_in[]= {
	{	SOCK_VALUE, 1, "Fac",	1.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f},
	{	SOCK_RGBA, 1, "Color",	0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f},
	{	-1, 0, ""	}
};

static bNodeSocketType sh_node_curve_rgb_out[]= {
	{	SOCK_RGBA, 0, "Color",	0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 1.0f},
	{	-1, 0, ""	}
};

static void node_shader_exec_curve_rgb(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
	float vec[3];
	
	/* stack order input:  vec */
	/* stack order output: vec */
	nodestack_get_vec(vec, SOCK_VECTOR, in[1]);
	curvemapping_evaluateRGBF(node->storage, out[0]->vec, vec);
	if(in[0]->vec[0] != 1.0f) {
		interp_v3_v3v3(out[0]->vec, vec, out[0]->vec, *in[0]->vec);
	}
}

static void node_shader_init_curve_rgb(bNode *node)
{
   node->storage= curvemapping_add(4, 0.0f, 0.0f, 1.0f, 1.0f);
}

static int gpu_shader_curve_rgb(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
	float *array;
	int size;
	curvemapping_table_RGBA(node->storage, &array, &size);
	return GPU_stack_link(mat, "curves_rgb", in, out, GPU_texture(size, array));
}

bNodeType sh_node_curve_rgb= {
	/* *next,*prev */	NULL, NULL,
	/* type code   */	SH_NODE_CURVE_RGB,
	/* name        */	"RGB Curves",
	/* width+range */	200, 140, 320,
	/* class+opts  */	NODE_CLASS_OP_COLOR, NODE_OPTIONS,
	/* input sock  */	sh_node_curve_rgb_in,
	/* output sock */	sh_node_curve_rgb_out,
	/* storage     */	"CurveMapping",
	/* execfunc    */	node_shader_exec_curve_rgb,
	/* butfunc     */ 	NULL,
	/* initfunc    */   node_shader_init_curve_rgb,
	/* freestoragefunc    */	node_free_curves,
	/* copystoragefunc    */	node_copy_curves,
	/* id          */	NULL, NULL, NULL,
	/* gpufunc     */	gpu_shader_curve_rgb
};