Geom::Matrix i2anc_affine	(	SPObject const *	object,
		SPObject const *const	ancestor
	)

Precondition:: ancestor really is an ancestor (>=) of object, or NULL. ("Ancestor (\>=)" here includes as far as object itself.)

Definition at line 1522 of file sp-item.cpp.

References Geom::identity().

Referenced by sp_item_i2doc_affine().

                                                                     {
    Geom::Matrix ret(Geom::identity());
    g_return_val_if_fail(object != NULL, ret);

    /* stop at first non-renderable ancestor */
    while ( object != ancestor && SP_IS_ITEM(object) ) {
        if (SP_IS_ROOT(object)) {
            ret *= SP_ROOT(object)->c2p;
        } else {
            ret *= SP_ITEM(object)->transform;
        }
        object = object->parent;
    }
    return ret;
}

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