node_composite_valToRgb.c

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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 *****
 */

#include "node_composite_util.h"


/* **************** VALTORGB ******************** */
static bNodeSocketTemplate cmp_node_valtorgb_in[]= {
    {   SOCK_FLOAT, 1, "Fac",           0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR},
    {   -1, 0, ""   }
};
static bNodeSocketTemplate cmp_node_valtorgb_out[]= {
    {   SOCK_RGBA, 0, "Image"},
    {   SOCK_FLOAT, 0, "Alpha"},
    {   -1, 0, ""   }
};

static void do_colorband_composit(bNode *node, float *out, float *in)
{
    do_colorband(node->storage, in[0], out);
}

static void node_composit_exec_valtorgb(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
    /* stack order in: fac */
    /* stack order out: col, alpha */
    
    if(out[0]->hasoutput==0 && out[1]->hasoutput==0) 
        return;
    
    if(node->storage) {
        /* input no image? then only color operation */
        if(in[0]->data==NULL) {
            do_colorband(node->storage, in[0]->vec[0], out[0]->vec);
        }
        else {
            /* make output size of input image */
            CompBuf *cbuf= in[0]->data;
            CompBuf *stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_RGBA, 1); /* allocs */
            
            composit1_pixel_processor(node, stackbuf, in[0]->data, in[0]->vec, do_colorband_composit, CB_VAL);
            
            out[0]->data= stackbuf;
            
            if(out[1]->hasoutput)
                out[1]->data= valbuf_from_rgbabuf(stackbuf, CHAN_A);

        }
    }
}

static void node_composit_init_valtorgb(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
    node->storage= add_colorband(1);
}

void register_node_type_cmp_valtorgb(bNodeTreeType *ttype)
{
    static bNodeType ntype;

    node_type_base(ttype, &ntype, CMP_NODE_VALTORGB, "ColorRamp", NODE_CLASS_CONVERTOR, NODE_OPTIONS);
    node_type_socket_templates(&ntype, cmp_node_valtorgb_in, cmp_node_valtorgb_out);
    node_type_size(&ntype, 240, 200, 300);
    node_type_init(&ntype, node_composit_init_valtorgb);
    node_type_storage(&ntype, "ColorBand", node_free_standard_storage, node_copy_standard_storage);
    node_type_exec(&ntype, node_composit_exec_valtorgb);

    nodeRegisterType(ttype, &ntype);
}



/* **************** RGBTOBW ******************** */
static bNodeSocketTemplate cmp_node_rgbtobw_in[]= {
    {   SOCK_RGBA, 1, "Image",          0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
    {   -1, 0, ""   }
};
static bNodeSocketTemplate cmp_node_rgbtobw_out[]= {
    {   SOCK_FLOAT, 0, "Val",           0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
    {   -1, 0, ""   }
};

static void do_rgbtobw(bNode *UNUSED(node), float *out, float *in)
{
    out[0]= in[0]*0.35f + in[1]*0.45f + in[2]*0.2f;
}

static void node_composit_exec_rgbtobw(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
    /* stack order out: bw */
    /* stack order in: col */
    
    if(out[0]->hasoutput==0)
        return;
    
    /* input no image? then only color operation */
    if(in[0]->data==NULL) {
        do_rgbtobw(node, out[0]->vec, in[0]->vec);
    }
    else {
        /* make output size of input image */
        CompBuf *cbuf= in[0]->data;
        CompBuf *stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_VAL, 1); /* allocs */
        
        composit1_pixel_processor(node, stackbuf, in[0]->data, in[0]->vec, do_rgbtobw, CB_RGBA);
        
        out[0]->data= stackbuf;
    }
}

void register_node_type_cmp_rgbtobw(bNodeTreeType *ttype)
{
    static bNodeType ntype;
    
    node_type_base(ttype, &ntype, CMP_NODE_RGBTOBW, "RGB to BW", NODE_CLASS_CONVERTOR, 0);
    node_type_socket_templates(&ntype, cmp_node_rgbtobw_in, cmp_node_rgbtobw_out);
    node_type_size(&ntype, 80, 40, 120);
    node_type_exec(&ntype, node_composit_exec_rgbtobw);
    
    nodeRegisterType(ttype, &ntype);
}