Class: TG::Geometry::Index

Inherits:

Object

• Object
• TG::Geometry::Index

Defined in:

ext/tg_geometry/tg_geometry_ext.c

Class Method Summary

• .build(*args) ⇒ Object

Instance Method Summary

• #_entries_bytes_for_test ⇒ Object
• #_force_dispose_for_test! ⇒ Object
• #_initialized_entries_for_test ⇒ Object
• #_owned_geom_bytes_for_test ⇒ Object
• #_rtree_bytes_for_test ⇒ Object
• #bbox ⇒ Object
• #covering_ids(lon_value, lat_value) ⇒ Object
• #covering_ids_batch_packed(input) ⇒ Object
• #find_covering(lon_value, lat_value) ⇒ Object
• #intersecting_rect(min_x_value, min_y_value, max_x_value, max_y_value) ⇒ Object
• #predicate ⇒ Object
• #size ⇒ Object
• #strategy ⇒ Object

Class Method Details

.build(*args) ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2560

static VALUE rb_tg_geometry_index_build(int argc, VALUE *argv, VALUE klass) {
    VALUE entries_value;
    VALUE kwargs;
    VALUE via_value;
    VALUE strategy_value;
    VALUE predicate_value;
    VALUE geometry_index_value;
    enum tg_geometry_index_via via;
    enum tg_geometry_index_strategy strategy;
    enum tg_geometry_index_predicate predicate;
    enum tg_index geometry_index;
    long len;
    tg_index_t *idx;
    VALUE wrapper;
    tg_index_build_args_t args;
    int state = 0;

    rb_scan_args(argc, argv, "1:", &entries_value, &kwargs);

    if (!RB_TYPE_P(entries_value, T_ARRAY)) {
        rb_raise(rb_eTypeError, "entries must be Array");
    }

    via_value = required_kwargs_value(kwargs, id_via, "via:");
    strategy_value = required_kwargs_value(kwargs, id_strategy, "strategy:");
    predicate_value = kwargs_value(kwargs, id_predicate, ID2SYM(id_covers));
    geometry_index_value = kwargs_value(kwargs, id_geometry_index, ID2SYM(id_ystripes));

    via = parse_index_via_symbol(via_value);
    strategy = parse_index_strategy_symbol(strategy_value);
    predicate = parse_index_predicate_symbol(predicate_value);
    geometry_index = parse_index_symbol(geometry_index_value);

    len = RARRAY_LEN(entries_value);
    wrapper = TypedData_Make_Struct(klass, tg_index_t, &tg_index_type, idx);
    idx->len = len;
    idx->capacity = len;
    idx->initialized = 0;
    idx->strategy = strategy;
    idx->predicate = predicate;
    idx->rtree = NULL;
    idx->frozen = false;
    idx->has_bbox = false;

    if (len > 0) {
        if ((size_t)len > SIZE_MAX / sizeof(tg_index_entry_t)) {
            rb_raise(rb_eNoMemError, "entries allocation size overflow");
        }

#ifdef TG_DEBUG_TEST
        if (tg_debug_fail_next_entries_alloc) {
            tg_debug_fail_next_entries_alloc = false;
            rb_raise(rb_eNoMemError, "entries allocation failed");
        }
#endif

        idx->entries = calloc((size_t)len, sizeof(tg_index_entry_t));
        if (!idx->entries) {
            rb_raise(rb_eNoMemError, "entries allocation failed");
        }

        idx->entries_bytes = (size_t)len * sizeof(tg_index_entry_t);
        rb_gc_adjust_memory_usage((ssize_t)idx->entries_bytes);
    }

    args.idx = idx;
    args.entries = entries_value;
    args.via = via;
    args.geometry_index = geometry_index;

    rb_protect(index_build_body, (VALUE)&args, &state);

    if (state) {
        index_dispose(idx);
        RB_GC_GUARD(entries_value);
        RB_GC_GUARD(wrapper);
        rb_jump_tag(state);
    }

    if (idx->initialized != idx->len) {
        index_dispose(idx);
        rb_raise(eTGGeometryError, "internal index build initialization mismatch");
    }

    idx->frozen = true;
    rb_obj_freeze(wrapper);

    RB_GC_GUARD(entries_value);
    RB_GC_GUARD(wrapper);
    return wrapper;
}

Instance Method Details

#_entries_bytes_for_test ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2835

static VALUE rb_tg_geometry_index_entries_bytes_for_test(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);
    return ULL2NUM((unsigned long long)idx->entries_bytes);
}

#_force_dispose_for_test! ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2850

static VALUE rb_tg_geometry_index_force_dispose_for_test(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);
    index_dispose(idx);
    return Qnil;
}

#_initialized_entries_for_test ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2845

static VALUE rb_tg_geometry_index_initialized_entries_for_test(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);
    return LONG2NUM(idx->initialized);
}

#_owned_geom_bytes_for_test ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2840

static VALUE rb_tg_geometry_index_owned_geom_bytes_for_test(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);
    return ULL2NUM((unsigned long long)idx->owned_geom_bytes_total);
}

#_rtree_bytes_for_test ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2830

static VALUE rb_tg_geometry_index_rtree_bytes_for_test(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);
    return ULL2NUM((unsigned long long)idx->rtree_bytes);
}

#bbox ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2683

static VALUE rb_tg_geometry_index_bbox(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);

    if (!idx->has_bbox)
        return Qnil;

    return rect_from_tg_rect(idx->bbox);
}

#covering_ids(lon_value, lat_value) ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2712

static VALUE rb_tg_geometry_index_covering_ids(VALUE self, VALUE lon_value, VALUE lat_value) {
    tg_index_t *idx = get_index_wrapper(self);
    double lon;
    double lat;
    unsigned char *marks;
    VALUE result;

    parse_public_point_args(lon_value, lat_value, &lon, &lat);
    marks = index_covering_marks(idx, lon, lat);
    result = build_ids_from_marks_protected(idx, marks);

    RB_GC_GUARD(self);
    return result;
}

#covering_ids_batch_packed(input) ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2749

static VALUE rb_tg_geometry_index_covering_ids_batch_packed(VALUE self, VALUE input) {
    tg_index_t *idx = get_index_wrapper(self);
    const char *data;
    long byte_len;
    long count;
    VALUE result;

    if (!RB_TYPE_P(input, T_STRING)) {
        rb_raise(rb_eTypeError, "packed input must be String");
    }

    byte_len = RSTRING_LEN(input);
    if (byte_len % (long)(2 * sizeof(double)) != 0) {
        rb_raise(eTGGeometryArgumentError, "packed input length must be multiple of 16 bytes");
    }

    count = byte_len / (long)(2 * sizeof(double));
    result = rb_ary_new_capa(count);
    data = RSTRING_PTR(input);

    for (long i = 0; i < count; i++) {
        double lon;
        double lat;
        VALUE id;

        memcpy(&lon, data + (i * (long)(2 * sizeof(double))), sizeof(double));
        memcpy(&lat, data + (i * (long)(2 * sizeof(double))) + (long)sizeof(double),
               sizeof(double));

        check_finite_double(lon, "lon");
        check_finite_double(lat, "lat");

        id = index_find_covering_value(idx, lon, lat);
        rb_ary_push(result, id);
    }

    RB_GC_GUARD(input);
    RB_GC_GUARD(self);
    RB_GC_GUARD(result);
    return result;
}

#find_covering(lon_value, lat_value) ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2699

static VALUE rb_tg_geometry_index_find_covering(VALUE self, VALUE lon_value, VALUE lat_value) {
    tg_index_t *idx = get_index_wrapper(self);
    double lon;
    double lat;
    VALUE result;

    parse_public_point_args(lon_value, lat_value, &lon, &lat);
    result = index_find_covering_value(idx, lon, lat);

    RB_GC_GUARD(self);
    return result;
}

#intersecting_rect(min_x_value, min_y_value, max_x_value, max_y_value) ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2727

static VALUE rb_tg_geometry_index_intersecting_rect(VALUE self, VALUE min_x_value,
                                                    VALUE min_y_value, VALUE max_x_value,
                                                    VALUE max_y_value) {
    tg_index_t *idx = get_index_wrapper(self);
    double min_x = NUM2DBL(min_x_value);
    double min_y = NUM2DBL(min_y_value);
    double max_x = NUM2DBL(max_x_value);
    double max_y = NUM2DBL(max_y_value);
    struct tg_rect query_rect;
    unsigned char *marks;
    VALUE result;

    validate_rect_coordinates(min_x, min_y, max_x, max_y);
    query_rect = tg_rect_from_xyxy(min_x, min_y, max_x, max_y);

    marks = index_intersecting_rect_marks(idx, query_rect);
    result = build_ids_from_marks_protected(idx, marks);

    RB_GC_GUARD(self);
    return result;
}

#predicate ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2670

static VALUE rb_tg_geometry_index_predicate(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);

    switch (idx->predicate) {
    case TG_GEOMETRY_INDEX_PREDICATE_COVERS:
        return ID2SYM(id_covers);
    case TG_GEOMETRY_INDEX_PREDICATE_CONTAINS:
        return ID2SYM(id_contains);
    }

    return Qnil;
}

#size ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2652

static VALUE rb_tg_geometry_index_size(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);
    return LONG2NUM(idx->len);
}

#strategy ⇒ Object

# File 'ext/tg_geometry/tg_geometry_ext.c', line 2657

static VALUE rb_tg_geometry_index_strategy(VALUE self) {
    tg_index_t *idx = get_index_wrapper(self);

    switch (idx->strategy) {
    case TG_GEOMETRY_INDEX_STRATEGY_FLAT:
        return ID2SYM(id_flat);
    case TG_GEOMETRY_INDEX_STRATEGY_RTREE:
        return ID2SYM(id_rtree);
    }

    return Qnil;
}