erebus

view liberebus/src/snode.cc @ 3:a932848de652

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foo
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 28 Apr 2014 15:44:59 +0300
parents 59a72293f9bd
children 93894c232d65
line source
1 #include <assert.h>
2 #include <algorithm>
3 #include "snode.h"
4
5 void SceneNode::add_child(SceneNode *node)
6 {
7 if(node->parent) {
8 if(node->parent == this) {
9 return;
10 }
11 node->parent->remove_child(node);
12 }
13
14 children.push_back(node);
15 node->parent = this;
16 }
17
18 bool SceneNode::remove_child(SceneNode *node)
19 {
20 auto it = std::find(children.begin(), children.end(), node);
21 if(it != children.end()) {
22 assert(node->parent == this);
23 node->parent = 0;
24 }
25 }
26
27 int SceneNode::get_num_children() const
28 {
29 return (int)children.size();
30 }
31
32 SceneNode *SceneNode::get_child(int idx) const
33 {
34 return children[idx];
35 }
36
37 void SceneNode::set_position(const Vector3 &pos)
38 {
39 this->pos = pos;
40 }
41
42 void SceneNode::set_rotation(const Quaternion &rot)
43 {
44 this->rot = rot;
45 }
46
47 void SceneNode::set_scaling(const Vector3 &scale)
48 {
49 this->scale = scale;
50 }
51
52
53 const Vector3 &SceneNode::get_node_position() const
54 {
55 return pos;
56 }
57
58 const Quaternion &SceneNode::get_node_rotation() const
59 {
60 return rot;
61 }
62
63 const Vector3 &SceneNode::get_node_scaling() const
64 {
65 return scale;
66 }
67
68
69 Vector3 SceneNode::get_position() const
70 {
71 return Vector3{0, 0, 0}.transformed(xform);
72 }
73
74 Quaternion SceneNode::get_rotation() const
75 {
76 return rot; // TODO
77 }
78
79 Vector3 SceneNode::get_scaling() const
80 {
81 return scale; // TODO
82 }
83
84
85 void SceneNode::update_node(long msec)
86 {
87 xform.reset_identity();
88 xform.translate(pos);
89 xform.rotate(rot);
90 xform.scale(scale);
91
92 if(parent) {
93 xform = parent->xform * xform;
94 }
95 inv_xform = xform.inverse();
96 }
97
98 void SceneNode::update(long msec)
99 {
100 update_node(msec);
101
102 for(size_t i=0; i<children.size(); i++) {
103 children[i]->update(msec);
104 }
105 }
106
107
108 bool SceneNode::intersect(const Ray &ray, RayHit *hit) const
109 {
110 Ray local_ray = ray.transformed(inv_xform);
111 }