nuclear@0: #include <stdio.h>
nuclear@0: #include <stdlib.h>
nuclear@0: #include <string.h>
nuclear@0: #include <errno.h>
nuclear@0: #include "mesh.h"
nuclear@0: 
nuclear@0: int mattr_init(struct mesh_attrib *ma)
nuclear@0: {
nuclear@0: 	memset(ma, 0, sizeof *ma);
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: void mattr_destroy(struct mesh_attrib *ma)
nuclear@0: {
nuclear@0: 	if(ma) {
nuclear@0: 		free(ma->name);
nuclear@0: 		free(ma->data);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: int mattr_set_name(struct mesh_attrib *ma, const char *name)
nuclear@0: {
nuclear@0: 	char *tmp;
nuclear@0: 
nuclear@0: 	if(!(tmp = malloc(strlen(name) + 1))) {
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 	strcpy(tmp, name);
nuclear@0: 
nuclear@0: 	free(ma->name);
nuclear@0: 	ma->name = tmp;
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: #define INITSZ	(16 * ma->elem_size)
nuclear@0: int mattr_add_elem(struct mesh_attrib *ma, void *data)
nuclear@0: {
nuclear@0: 	int nsz = (ma->count + 1) * ma->elem_size;
nuclear@0: 
nuclear@0: 	if(nsz > ma->datasz) {
nuclear@0: 		void *tmp;
nuclear@0: 
nuclear@0: 		nsz = ma->datasz ? ma->datasz * 2 : INITSZ;
nuclear@0: 
nuclear@0: 		if(!(tmp = realloc(ma->data, nsz))) {
nuclear@0: 			return -1;
nuclear@0: 		}
nuclear@0: 		ma->data = tmp;
nuclear@0: 		ma->datasz = nsz;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	memcpy((char*)ma->data + ma->elem_size * ma->count++, data, ma->elem_size);
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: /* -------- mesh -------- */
nuclear@0: 
nuclear@0: int mesh_init(struct mesh *m)
nuclear@0: {
nuclear@0: 	memset(m, 0, sizeof *m);
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: void mesh_destroy(struct mesh *m)
nuclear@0: {
nuclear@0: 	int i;
nuclear@0: 
nuclear@0: 	free(m->name);
nuclear@0: 
nuclear@0: 	for(i=0; i<m->num_attr; i++) {
nuclear@0: 		mattr_destroy(&m->attr[i]);
nuclear@0: 	}
nuclear@0: 	free(m->attr);
nuclear@0: 
nuclear@0: 	for(i=0; i<m->num_attr; i++) {
nuclear@0: 		free(m->polyidx[i]);
nuclear@0: 	}
nuclear@0: 	free(m->polyidx);
nuclear@0: }
nuclear@0: 
nuclear@0: int mesh_set_name(struct mesh *m, const char *name)
nuclear@0: {
nuclear@0: 	char *tmp;
nuclear@0: 
nuclear@0: 	if(!(tmp = malloc(strlen(name) + 1))) {
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 	strcpy(tmp, name);
nuclear@0: 
nuclear@0: 	free(m->name);
nuclear@0: 	m->name = tmp;
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: int mesh_add_attrib(struct mesh *m, struct mesh_attrib *attr)
nuclear@0: {
nuclear@0: 	void *tmp;
nuclear@0: 	int idx = m->num_attr++;
nuclear@0: 
nuclear@0: 	if(!(tmp = realloc(m->attr, m->num_attr * sizeof *attr))) {
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 	m->attr = tmp;
nuclear@0: 	m->attr[idx] = *attr;
nuclear@0: 
nuclear@0: 	if(!(tmp = realloc(m->polyidx, m->num_attr * sizeof *m->polyidx))) {
nuclear@0: 		m->num_attr--;
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 	m->polyidx[idx] = 0;
nuclear@0: 
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: int mesh_find_attrib(struct mesh *m, const char *name)
nuclear@0: {
nuclear@0: 	int i;
nuclear@0: 
nuclear@0: 	for(i=0; i<m->num_attr; i++) {
nuclear@0: 		if(strcmp(m->attr[i].name, name) == 0) {
nuclear@0: 			return i;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	return -1;
nuclear@0: }