CMP_dilate.c

Go to the documentation of this file.

/*
 * $Id: CMP_dilate.c 35237 2011-02-27 20:13:22Z jesterking $
 *
 * ***** 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 "../CMP_util.h"


/* **************** Dilate/Erode ******************** */

static bNodeSocketType cmp_node_dilateerode_in[]= {
        {       SOCK_VALUE, 1, "Mask",          0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};
static bNodeSocketType cmp_node_dilateerode_out[]= {
        {       SOCK_VALUE, 0, "Mask",          0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};

static void morpho_dilate(CompBuf *cbuf)
{
        int x, y;
        float *p, *rectf = cbuf->rect;
        
        for (y=0; y < cbuf->y; y++) {
                for (x=0; x < cbuf->x-1; x++) {
                        p = rectf + cbuf->x*y + x;
                        *p = MAX2(*p, *(p + 1));
                }
        }

        for (y=0; y < cbuf->y; y++) {
                for (x=cbuf->x-1; x >= 1; x--) {
                        p = rectf + cbuf->x*y + x;
                        *p = MAX2(*p, *(p - 1));
                }
        }

        for (x=0; x < cbuf->x; x++) {
                for (y=0; y < cbuf->y-1; y++) {
                        p = rectf + cbuf->x*y + x;
                        *p = MAX2(*p, *(p + cbuf->x));
                }
        }

        for (x=0; x < cbuf->x; x++) {
                for (y=cbuf->y-1; y >= 1; y--) {
                        p = rectf + cbuf->x*y + x;
                        *p = MAX2(*p, *(p - cbuf->x));
                }
        }
}

static void morpho_erode(CompBuf *cbuf)
{
        int x, y;
        float *p, *rectf = cbuf->rect;
        
        for (y=0; y < cbuf->y; y++) {
                for (x=0; x < cbuf->x-1; x++) {
                        p = rectf + cbuf->x*y + x;
                        *p = MIN2(*p, *(p + 1));
                }
        }

        for (y=0; y < cbuf->y; y++) {
                for (x=cbuf->x-1; x >= 1; x--) {
                        p = rectf + cbuf->x*y + x;
                        *p = MIN2(*p, *(p - 1));
                }
        }

        for (x=0; x < cbuf->x; x++) {
                for (y=0; y < cbuf->y-1; y++) {
                        p = rectf + cbuf->x*y + x;
                        *p = MIN2(*p, *(p + cbuf->x));
                }
        }

        for (x=0; x < cbuf->x; x++) {
                for (y=cbuf->y-1; y >= 1; y--) {
                        p = rectf + cbuf->x*y + x;
                        *p = MIN2(*p, *(p - cbuf->x));
                }
        }
        
}

static void node_composit_exec_dilateerode(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
        /* stack order in: mask */
        /* stack order out: mask */
        if(out[0]->hasoutput==0) 
                return;
        
        /* input no image? then only color operation */
        if(in[0]->data==NULL) {
                out[0]->vec[0] = out[0]->vec[1] = out[0]->vec[2] = 0.0f;
                out[0]->vec[3] = 0.0f;
        }
        else {
                /* make output size of input image */
                CompBuf *cbuf= typecheck_compbuf(in[0]->data, CB_VAL);
                CompBuf *stackbuf= dupalloc_compbuf(cbuf);
                short i;
                
                if (node->custom2 > 0) { // positive, dilate
                        for (i = 0; i < node->custom2; i++)
                                morpho_dilate(stackbuf);
                } else if (node->custom2 < 0) { // negative, erode
                        for (i = 0; i > node->custom2; i--)
                                morpho_erode(stackbuf);
                }
                
                if(cbuf!=in[0]->data)
                        free_compbuf(cbuf);
                
                out[0]->data= stackbuf;
        }
}

void register_node_type_cmp_dilateerode(ListBase *lb)
{
        static bNodeType ntype;
        
        node_type_base(&ntype, CMP_NODE_DILATEERODE, "Dilate/Erode", NODE_CLASS_OP_FILTER, NODE_OPTIONS,
                                   cmp_node_dilateerode_in, cmp_node_dilateerode_out);
        node_type_size(&ntype, 130, 100, 320);
        node_type_exec(&ntype, node_composit_exec_dilateerode);
        
        nodeRegisterType(lb, &ntype);
}