goat3d
annotate src/node.cc @ 0:2918358f5e6d
initial commit
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Sat, 17 Aug 2013 16:10:26 +0300 |
| parents | |
| children | cd71f0b92f44 |
| rev | line source |
|---|---|
| nuclear@0 | 1 #include <algorithm> |
| nuclear@0 | 2 #include <string.h> |
| nuclear@0 | 3 #include "node.h" |
| nuclear@0 | 4 |
| nuclear@0 | 5 Node::Node() |
| nuclear@0 | 6 { |
| nuclear@0 | 7 parent = 0; |
| nuclear@0 | 8 } |
| nuclear@0 | 9 |
| nuclear@0 | 10 Node::~Node() |
| nuclear@0 | 11 { |
| nuclear@0 | 12 } |
| nuclear@0 | 13 |
| nuclear@0 | 14 void Node::set_name(const char *name) |
| nuclear@0 | 15 { |
| nuclear@0 | 16 this->name = name; |
| nuclear@0 | 17 } |
| nuclear@0 | 18 |
| nuclear@0 | 19 const char *Node::get_name() const |
| nuclear@0 | 20 { |
| nuclear@0 | 21 return name.c_str(); |
| nuclear@0 | 22 } |
| nuclear@0 | 23 |
| nuclear@0 | 24 void Node::add_child(Node *c) |
| nuclear@0 | 25 { |
| nuclear@0 | 26 // make sure we don't add it twice |
| nuclear@0 | 27 if(std::find(children.begin(), children.end(), c) != children.end()) { |
| nuclear@0 | 28 return; |
| nuclear@0 | 29 } |
| nuclear@0 | 30 children.push_back(c); |
| nuclear@0 | 31 c->parent = this; |
| nuclear@0 | 32 } |
| nuclear@0 | 33 |
| nuclear@0 | 34 int Node::get_num_children() const |
| nuclear@0 | 35 { |
| nuclear@0 | 36 return (int)children.size(); |
| nuclear@0 | 37 } |
| nuclear@0 | 38 |
| nuclear@0 | 39 Node *Node::get_child(int idx) const |
| nuclear@0 | 40 { |
| nuclear@0 | 41 if(idx < 0 || idx >= get_num_children()) { |
| nuclear@0 | 42 return 0; |
| nuclear@0 | 43 } |
| nuclear@0 | 44 return children[idx]; |
| nuclear@0 | 45 } |
| nuclear@0 | 46 |
| nuclear@0 | 47 Node *Node::get_child(const char *name) const |
| nuclear@0 | 48 { |
| nuclear@0 | 49 for(size_t i=0; i<children.size(); i++) { |
| nuclear@0 | 50 if(strcmp(children[i]->get_name(), name) == 0) { |
| nuclear@0 | 51 return children[i]; |
| nuclear@0 | 52 } |
| nuclear@0 | 53 } |
| nuclear@0 | 54 return 0; |
| nuclear@0 | 55 } |
| nuclear@0 | 56 |
| nuclear@0 | 57 Node *Node::get_descendant(const char *name) const |
| nuclear@0 | 58 { |
| nuclear@0 | 59 Node *c = get_child(name); |
| nuclear@0 | 60 if(c) { |
| nuclear@0 | 61 return c; |
| nuclear@0 | 62 } |
| nuclear@0 | 63 |
| nuclear@0 | 64 // depth first search might not be ideal in this case, but it's the simplest |
| nuclear@0 | 65 for(size_t i=0; i<children.size(); i++) { |
| nuclear@0 | 66 if((c = children[i]->get_descendant(name))) { |
| nuclear@0 | 67 return c; |
| nuclear@0 | 68 } |
| nuclear@0 | 69 } |
| nuclear@0 | 70 return 0; |
| nuclear@0 | 71 } |
| nuclear@0 | 72 |
| nuclear@0 | 73 Node *Node::get_parent() const |
| nuclear@0 | 74 { |
| nuclear@0 | 75 return parent; |
| nuclear@0 | 76 } |
| nuclear@0 | 77 |
| nuclear@0 | 78 Node *Node::get_ancestor(const char *name) const |
| nuclear@0 | 79 { |
| nuclear@0 | 80 Node *n = (Node*)this; |
| nuclear@0 | 81 |
| nuclear@0 | 82 if(!name) { |
| nuclear@0 | 83 // just return the root |
| nuclear@0 | 84 while(n->parent) { |
| nuclear@0 | 85 n = n->parent; |
| nuclear@0 | 86 } |
| nuclear@0 | 87 return n; |
| nuclear@0 | 88 } |
| nuclear@0 | 89 |
| nuclear@0 | 90 // otherwise we're looking for a specific ancestor |
| nuclear@0 | 91 while(n && strcmp(n->get_name(), name) != 0) { |
| nuclear@0 | 92 n = n->parent; |
| nuclear@0 | 93 } |
| nuclear@0 | 94 return n; |
| nuclear@0 | 95 } |