C++ bu_malloc函数代码示例

void
do_quad(char *line)
{
    int element_id;
    int pt1, pt2, pt3, pt4;
    fastf_t thick = 0.0;
    int pos = 0;

    bu_strlcpy(field,  &line[8], sizeof(field));
    element_id = atoi( field );

    if ( debug )
	bu_log( "do_quad: %s\n", line );

    if ( !bot )
	bot = element_id;

    if ( faces == NULL )
    {
	faces = (int *)bu_malloc( GRID_BLOCK*3*sizeof( int ), "faces" );
	thickness = (fastf_t *)bu_malloc( GRID_BLOCK*sizeof( fastf_t ), "thickness" );
	facemode = (char *)bu_malloc( GRID_BLOCK*sizeof( char ), "facemode" );
	face_size = GRID_BLOCK;
	face_count = 0;
    }

    bu_strlcpy(field,  &line[24], sizeof(field));
    pt1 = atoi( field );

    bu_strlcpy(field,  &line[32], sizeof(field));
    pt2 = atoi( field );

    bu_strlcpy(field,  &line[40], sizeof(field));
    pt3 = atoi( field );

    bu_strlcpy(field,  &line[48], sizeof(field));
    pt4 = atoi( field );

    if ( mode == PLATE_MODE )
    {
	bu_strlcpy(field,  &line[56], sizeof(field));
	thick = atof( field ) * 25.4;

	bu_strlcpy(field,  &line[64], sizeof(field));
	pos = atoi( field );

	if ( pos == 0 )	/* use default */
	    pos = POS_FRONT;

	if ( pos != POS_CENTER && pos != POS_FRONT )
	{
	    bu_log( "do_quad: illegal postion parameter (%d), must be one or two\n", pos );
	    bu_log( "\telement %d, component %d, group %d\n", element_id, comp_id, group_id );
	    return;
	}
    }

    Add_bot_face( pt1, pt2, pt3, thick, pos );
    Add_bot_face( pt1, pt3, pt4, thick, pos );
}

icv_image_t *
icv_create(int width, int height, ICV_COLOR_SPACE color_space)
{
    icv_image_t *bif;
    BU_ALLOC(bif, struct icv_image);
    bif->width = width;
    bif->height = height;
    bif->color_space = color_space;
    bif->alpha_channel = 0;
    bif->magic = ICV_IMAGE_MAGIC;
    switch (color_space) {
	case ICV_COLOR_SPACE_RGB :
	    /* Add all the other three channel images here (eg. HSV, YCbCr etc.) */
	    bif->data = (double *) bu_malloc(bif->height*bif->width*3*sizeof(double), "Image Data");
	    bif->channels = 3;
	    break;
	case ICV_COLOR_SPACE_GRAY :
	    bif->data = (double *) bu_malloc(bif->height*bif->width*1*sizeof(double), "Image Data");
	    bif->channels = 1;
	    break;
	default :
	    bu_exit(1, "icv_create_image : Color Space Not Defined");
	    break;
    }
    return icv_zero(bif);
}

void
texture_perlin_init(struct texture_perlin_s *P)
{
    int i, j, k;

    P->PV = (int *)bu_malloc(sizeof(int)*(2*B+2), "PV");
    P->RV = (vect_t *)bu_malloc(sizeof(vect_t)*(2*B+2), "RV");

    /* Generate Random Vectors */
    for (i = 0; i < B; i++) {
	P->RV[i][0] = (fastf_t)((PRAND % (2*B)) - B) / B;
	P->RV[i][1] = (fastf_t)((PRAND % (2*B)) - B) / B;
	P->RV[i][2] = (fastf_t)((PRAND % (2*B)) - B) / B;
	VUNITIZE(P->RV[i]);
	P->PV[i] = i;
    }

    /* Permute Indices into Vector List G */
    for (i = 0; i < B; i++) {
	k = P->PV[i];
	P->PV[i] = P->PV[j = PRAND % B];
	P->PV[j] = k;
    }

    for (i = 0; i < B + 2; i++) {
	P->PV[B+i] = P->PV[i];
	VMOVE(P->RV[B+i], P->RV[i]);
    }
}

void
db_dup_full_path(struct db_full_path *newp, const struct db_full_path *oldp)
{
    unsigned int i = 0;
    RT_CK_FULL_PATH(newp);
    RT_CK_FULL_PATH(oldp);

    newp->fp_maxlen = oldp->fp_maxlen;
    newp->fp_len = oldp->fp_len;
    if (oldp->fp_len <= 0) {
	newp->fp_names = (struct directory **)0;
	newp->fp_bool = (int *)0;
	return;
    }
    newp->fp_names = (struct directory **)bu_malloc(newp->fp_maxlen * sizeof(struct directory *),
	    "db_full_path array (duplicate)");
    memcpy((char *)newp->fp_names, (char *)oldp->fp_names, newp->fp_len * sizeof(struct directory *));

    newp->fp_bool = (int *)bu_malloc(newp->fp_maxlen * sizeof(int),
	    "db_full_path bool array (duplicate)");
    memcpy((char *)newp->fp_bool, (char *)oldp->fp_bool, newp->fp_len * sizeof(int));

    newp->fp_mat = (matp_t *)bu_calloc(newp->fp_maxlen, sizeof(matp_t),
	    "db_full_path mat array (duplicate)");
    for (i = 0; i < newp->fp_len; i++) {
	if (oldp->fp_mat[i]) {
	    newp->fp_mat[i] = (matp_t)bu_calloc(1, sizeof(mat_t), "transformation matrix");
	    MAT_COPY(newp->fp_mat[i], oldp->fp_mat[i]);
	}
    }
}

static struct edge_g_cnurb *
nmg_construct_edge_g_cnurb(const struct edge_g_cnurb *original, void **structArray)
{
    struct edge_g_cnurb *ret;

    NMG_GETSTRUCT(ret, edge_g_cnurb);

    ret->l.magic = NMG_EDGE_G_CNURB_MAGIC;

    BU_LIST_INIT(&ret->eu_hd2);

    ret->order = original->order;

    ret->k.magic  = NMG_KNOT_VECTOR_MAGIC;
    ret->k.k_size = original->k.k_size;
    ret->k.knots = (fastf_t *)bu_malloc(ret->k.k_size * sizeof(fastf_t), "nmg_construct_edge_g_cnurb(): k.knots");
    memcpy(ret->k.knots, original->k.knots, ret->k.k_size * sizeof(fastf_t));

    ret->c_size     = original->c_size;
    ret->pt_type    = original->pt_type;
    ret->ctl_points = (fastf_t *)bu_malloc(ret->c_size * RT_NURB_EXTRACT_COORDS(ret->pt_type) * sizeof(fastf_t),
					   "nmg_construct_edge_g_cnurb(): ctl_points");
    memcpy(ret->ctl_points, original->ctl_points, ret->c_size * RT_NURB_EXTRACT_COORDS(ret->pt_type) * sizeof(fastf_t));

    ret->index              = original->index;
    structArray[ret->index] = ret;

    return ret;
}

/*
 *	Write the nmg to a BRL-CAD style data base.
 */
int
create_brlcad_db(struct rt_wdb *fpout, struct model *m, char *reg_name, char *grp_name)
{
    char *rname, *sname;
    int empty_model;
    struct shell *s;
    struct nmgregion *r;

    rname = (char *)bu_malloc(sizeof(reg_name) + 3, "rname");	/* Region name. */
    sname = (char *)bu_malloc(sizeof(reg_name) + 3, "sname");	/* Solid name. */

    snprintf(sname, sizeof(reg_name) + 2, "s.%s", reg_name);
    empty_model = nmg_kill_zero_length_edgeuses(m);
    if (empty_model) {
	bu_log("Warning: skipping empty model.");
	return 0;
    }
    nmg_rebound(m, &tol);
    r = BU_LIST_FIRST(nmgregion, &m->r_hd);
    s = BU_LIST_FIRST(shell, &r->s_hd);
    mk_bot_from_nmg(fpout, sname,  s);		/* Make BOT object. */
    snprintf(rname, sizeof(reg_name) + 2, "r.%s", reg_name);
    mk_comb1(fpout, rname, sname, 1);	/* Put object in a region. */
    if (grp_name) {
	mk_comb1(fpout, grp_name, rname, 1);	/* Region in group. */
    }
    return 0;
}

/**
 * Create a place holder for a nurb surface.
 */
struct face_g_snurb *
rt_nurb_new_snurb(int u_order, int v_order, int n_u, int n_v, int n_rows, int n_cols, int pt_type, struct resource *res)
{
    register struct face_g_snurb * srf;
    int pnum;

    if (res) RT_CK_RESOURCE(res);

    GET_SNURB(srf);
    srf->order[0] = u_order;
    srf->order[1] = v_order;
    srf->dir = RT_NURB_SPLIT_ROW;

    srf->u.k_size = n_u;
    srf->v.k_size = n_v;
    srf->s_size[0] = n_rows;
    srf->s_size[1] = n_cols;
    srf->pt_type = pt_type;

    pnum = sizeof (fastf_t) * n_rows * n_cols * RT_NURB_EXTRACT_COORDS(pt_type);

    srf->u.knots = (fastf_t *) bu_malloc (
	n_u * sizeof (fastf_t), "rt_nurb_new_snurb: u kv knot values");
    srf->v.knots = (fastf_t *) bu_malloc (
	n_v * sizeof (fastf_t), "rt_nurb_new_snurb: v kv knot values");
    srf->ctl_points = (fastf_t *) bu_malloc(
	pnum, "rt_nurb_new_snurb: control mesh points");

    return srf;
}

/* This attempts to find the surface area by subdividing the uv plane
 * into squares, and finding the approximate surface area of each
 * square.
 */
static fastf_t
superell_surf_area_general(const struct rt_superell_internal *sip, vect_t mags, fastf_t side_length)
{
    fastf_t area = 0;
    fastf_t u, v;

    /* There are M_PI / side_length + 1 values because both ends have
       to be stored */
    int row_length = sizeof(point_t) * (M_PI / side_length + 1);

    point_t *row1 = (point_t *)bu_malloc(row_length, "superell_surf_area_general");
    point_t *row2 = (point_t *)bu_malloc(row_length, "superell_surf_area_general");

    int idx = 0;


    /* This function keeps a moving window of two rows at any time,
     * and calculates the area of space between those two rows. It
     * calculates the first row outside of the loop so that at each
     * iteration it only has to calculate the second. Following
     * standard definitions of u and v, u ranges from -pi to pi, and v
     * ranges from -pi/2 to pi/2. Using an extra index variable allows
     * the code to compute the index into the array very efficiently.
     */
    for (v = -M_PI_2; v < M_PI_2; v += side_length, idx++) {
        superell_xyz_from_uv(row1[idx], -M_PI, v, mags, sip);
    }


    /* This starts at -M_PI + side_length because the first row is
     * computed outside the loop, which allows the loop to always
     * calculate the second row of the pair.
     */
    for (u = -M_PI + side_length; u < M_PI; u += side_length) {
        idx = 0;
        for (v = -M_PI_2; v < M_PI_2; v += side_length, idx++) {
            superell_xyz_from_uv(row2[idx], u + side_length, v, mags, sip);
        }

        idx = 0;

        /* This ends at -M_PI / 2 - side_length because if it kept
         * going it would overflow the array, since it always looks at
         * the square to the right of its current index.
         */
        for (v = - M_PI_2; v < M_PI_2 - side_length; v += side_length, idx++) {
            area +=
                bn_dist_pt3_pt3(row1[idx], row1[idx + 1]) *
                bn_dist_pt3_pt3(row1[idx], row2[idx]);
        }

        memcpy(row1, row2, row_length);
    }

    bu_free(row1, "superell_surf_area_general");
    bu_free(row2, "superell_surf_area_general");

    return area;
}

HIDDEN int
wdb_add_operand(Tcl_Interp *interp, struct bu_list *hp, char *name)
{
    char *ptr_lparen;
    char *ptr_rparen;
    int name_len;
    union tree *node;
    struct tokens *tok;

    BU_CK_LIST_HEAD(hp);

    ptr_lparen = strchr(name, '(');
    ptr_rparen = strchr(name, ')');

    RT_GET_TREE( node, &rt_uniresource );
    node->magic = RT_TREE_MAGIC;
    node->tr_op = OP_DB_LEAF;
    node->tr_l.tl_mat = (matp_t)NULL;
    if (ptr_lparen || ptr_rparen) {
	int tmp1, tmp2;

	if (ptr_rparen)
	    tmp1 = ptr_rparen - name;
	else
	    tmp1 = (-1);
	if (ptr_lparen)
	    tmp2 = ptr_lparen - name;
	else
	    tmp2 = (-1);

	if (tmp2 == (-1) && tmp1 > 0)
	    name_len = tmp1;
	else if (tmp1 == (-1) && tmp2 > 0)
	    name_len = tmp2;
	else if (tmp1 > 0 && tmp2 > 0) {
	    if (tmp1 < tmp2)
		name_len = tmp1;
	    else
		name_len = tmp2;
	}
	else {
	    Tcl_AppendResult(interp, "Cannot determine length of operand name: ",
			     name, ", aborting\n", (char *)NULL);
	    return (0);
	}
    } else
	name_len = strlen( name );

    node->tr_l.tl_name = (char *)bu_malloc(name_len+1, "node name");
    bu_strlcpy(node->tr_l.tl_name, name, name_len+1);

    tok = (struct tokens *)bu_malloc(sizeof(struct tokens), "tok");
    tok->type = WDB_TOK_TREE;
    tok->tp = node;
    BU_LIST_INSERT(hp, &tok->l);
    return (name_len);
}

void render_surfel_init(render_t *render, uint32_t num, render_surfel_pt_t *list) {
    render_surfel_t *d;

    render->work = render_surfel_work;
    render->free = render_surfel_free;
    render->data = (render_surfel_t *)bu_malloc(sizeof(render_surfel_t), "render data");
    d = (render_surfel_t *)render->data;
    d->list = (render_surfel_pt_t *)bu_malloc(num * sizeof(render_surfel_pt_t), "data list");
    d->num = num;
    d->list = list;
}

/**
 * rt_nurb_c_xsplit()
 *
 * Split a NURB curve by inserting a multiple knot and return the
 * result of the two curves.
 *
 * Algorithm:
 *
 * Insert a multiple knot of the curve order. A parameter is give for
 * the knot value for which the curve will be split.
 */
struct edge_g_cnurb *
rt_nurb_c_xsplit(struct edge_g_cnurb *crv, fastf_t param)
{
    struct knot_vector new_kv;
    struct oslo_mat * oslo;
    int k_index;
    struct edge_g_cnurb * crv1, * crv2;
    int coords;

    NMG_CK_CNURB(crv);

    coords = RT_NURB_EXTRACT_COORDS(crv->pt_type),

	k_index = crv->order;
    rt_nurb_kvmult(&new_kv, &crv->k, crv->order, param, (struct resource *)NULL);

    oslo = (struct oslo_mat *)
	rt_nurb_calc_oslo(crv->order, &crv->k, &new_kv, (struct resource *)NULL);

    GET_CNURB(crv1);
    crv1->order  = crv->order;
    rt_nurb_kvextract(&crv1->k, &new_kv, 0, k_index + crv->order, (struct resource *)NULL);
    crv1->pt_type = crv->pt_type;
    crv1->c_size = crv1->k.k_size - crv1->order;
    crv1->ctl_points = (fastf_t *)
	bu_malloc(sizeof(fastf_t) * crv1->c_size *
		  RT_NURB_EXTRACT_COORDS(crv1->pt_type),
		  "rt_nurb_c_xsplit: crv1 control points");

    GET_CNURB(crv2);
    crv2->order  = crv->order;
    rt_nurb_kvextract(&crv2->k, &new_kv, k_index, new_kv.k_size, (struct resource *)NULL);
    crv2->pt_type = crv->pt_type;
    crv2->c_size = crv2->k.k_size - crv2->order;
    crv2->ctl_points = (fastf_t *)
	bu_malloc(sizeof(fastf_t) * crv2->c_size *
		  RT_NURB_EXTRACT_COORDS(crv2->pt_type),
		  "rt_nurb_c_xsplit: crv2 row mesh control points");

    rt_nurb_map_oslo(oslo, crv->ctl_points, crv1->ctl_points,
		     coords, coords, 0, k_index, crv->pt_type);

    rt_nurb_map_oslo(oslo, crv->ctl_points, crv2->ctl_points,
		     coords, coords, k_index, new_kv.k_size - crv2->order,
		     crv2->pt_type);

    rt_nurb_free_oslo(oslo, (struct resource *)NULL);

    bu_free((char *) new_kv.knots, "rt_nurb_c_xsplit: new_kv.knots");

    BU_LIST_APPEND(&crv1->l, &crv2->l);
    return crv1;
}

/**
 * Solve must be passed two matrices that are of the form of pointer
 * to double arrays. mat_1 is the n by n matrix that is to be
 * decomposed and mat_2 is the matrix that contains the left side of
 * the equation.  The variable solution which is double is also to be
 * created by the user and consisting of n elements of which the
 * solution set is passed back.
 *
 * Arguments mat_1 and mat_2 are modified by this call.
 * The solution is written into the solution[] array.
 */
void
rt_nurb_solve(fastf_t *mat_1, fastf_t *mat_2, fastf_t *solution, int dim, int coords)
    /* A and b array of the system Ax= b*/


    /* dimension of the matrix */
    /* Number of coordinates for mat_2 and solution */
{
    register int i, k;
    fastf_t *y;
    fastf_t * b;
    fastf_t * s;

    y = (fastf_t *) bu_malloc(sizeof (fastf_t) * dim,
			      "rt_nurb_solve: y");/* Create temp array */

    b = (fastf_t *) bu_malloc(sizeof (fastf_t) * dim,
			      "rt_nurb_solve: b");/* Create temp array */

    s = (fastf_t *) bu_malloc(sizeof (fastf_t) * dim,
			      "rt_nurb_solve: s");/* Create temp array */

    rt_nurb_doolittle (mat_1, mat_2, dim, coords);/* Create LU decomposition */

    for (k =0; k < coords; k++) {
	fastf_t * ptr;

	ptr = mat_2 + k;

	for (i = 0; i < dim; i++) {
	    b[i] = *ptr;
	    ptr += coords;
	}

	/* Solve the system Ly =b */
	rt_nurb_forw_solve (mat_1, b, y, dim);

	/* Solve the system Ux = y */
	rt_nurb_back_solve (mat_1, y, s, dim);


	ptr = solution + k;
	for (i=0; i < dim; i++) {
	    *ptr = s[i];
	    ptr += coords;
	}
    }

    bu_free ((char *)y, "rt_nurb_solve: y");			/* Free up storage */
    bu_free ((char *)b, "rt_nurb_solve: b");			/* Free up storage */
    bu_free ((char *)s, "rt_nurb_solve: s");			/* Free up storage */
}

void texture_image_init(texture_t *texture, short w, short h, unsigned char *image) {
    texture_image_t *td;

    texture->data = bu_malloc(sizeof(texture_image_t), "texture data");
    texture->free = texture_image_free;
    texture->work = (texture_work_t *)texture_image_work;

    td = (texture_image_t *)texture->data;
    td->w = w;
    td->h = h;
    td->image = (unsigned char *)bu_malloc(3*w*h, "texture image");
    memcpy(td->image, image, 3*w*h);
}

/**
 *	P O P _ I N I T --- initialize a population of a given size
 */
void
pop_init (struct population *p, int size)
{
    p->parent = bu_malloc(sizeof(struct individual) * size, "parent");
    p->child  = bu_malloc(sizeof(struct individual) * size, "child");
    p->size = size;
    p->db_c = p->db_p = DBI_NULL;
    p->name = bu_malloc(sizeof(char *) * size, "names");

#define SEED 33
    /* init in main() bn_rand_init(randomer, SEED);*/
    bn_rand_init(randomer, SEED);
}

/*	bn_gauss_init	Initialize a random number struct for gaussian
 *	numbers.
 *
 * @par Entry
 *	setseed		Seed to use.
 *	method		method to use to generate numbers (not used)
 *
 * @par Exit
 *	Returns a pointer toa bn_msr_guass structure.
 *	returns 0 on error.
 *
 * @par Calls
 *	bu_malloc
 *
 * @par Uses
 *	None.
 *
 * @par Method @code
 *	malloc up a structure
 *	get table space
 *	set seed and pointer.
 *	if setseed != 0 then seed = setseed
 @endcode
*/
struct bn_gauss *
bn_gauss_init(long int setseed, int method)
{
    struct bn_gauss *p;
    p = (struct bn_gauss *) bu_malloc(sizeof(struct bn_gauss), "bn_msr_guass");
    p->msr_gausses=(double *) bu_malloc(BN_MSR_MAXTBL*sizeof(double), "msr guass table");
    p->msr_gauss_doubles=(double *) bu_malloc(BN_MSR_MAXTBL*sizeof(double), "msr guass doubles");
    p->msr_gauss_seed = 1;
    p->msr_gauss_ptr = 0;
    p->msr_gauss_dbl_ptr = 0;

    if (setseed&0x7fffffff) p->msr_gauss_seed=setseed&0x7fffffff;
    p->magic = BN_GAUSS_MAGIC;
    return(p);
}