X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fsnode.cc;h=eee5fcec02b26e266306b5eeaf36f23e1aa89f74;hp=ffb1d085a33a490e72a0a313a302e56e678ecfe3;hb=ad052fc67fe4e76d2f4a01b2381a738da1708cdb;hpb=dbcb9345c23c5c027d808915962843e7db2d14aa

diff --git a/src/snode.cc b/src/snode.cc
index ffb1d08..eee5fce 100644
--- a/src/snode.cc
+++ b/src/snode.cc
@@ -3,6 +3,7 @@
 #include <algorithm>
 #include "snode.h"
 #include "objmesh.h"
+#include "dbg_gui.h"
 
 SceneNode::SceneNode()
 	: scale(1, 1, 1)
@@ -10,6 +11,7 @@ SceneNode::SceneNode()
 	scene = 0;
 	parent = 0;
 	name = 0;
+	local_bvol_valid = false;
 }
 
 SceneNode::SceneNode(Object *obj)
@@ -18,6 +20,7 @@ SceneNode::SceneNode(Object *obj)
 	scene = 0;
 	parent = 0;
 	name = 0;
+	local_bvol_valid = false;
 	add_object(obj);
 }
 
@@ -94,6 +97,8 @@ void SceneNode::add_object(Object *obj)
 
 	this->obj.push_back(obj);
 	obj->node = this;
+
+	local_bvol_valid = false;
 }
 
 bool SceneNode::remove_object(Object *o)
@@ -108,6 +113,8 @@ bool SceneNode::remove_object(Object *o)
 		return false;
 	}
 	obj.erase(it);
+
+	local_bvol_valid = false;
 	return true;
 }
 
@@ -194,12 +201,26 @@ void SceneNode::update_node(float dt)
 
 void SceneNode::update(float dt)
 {
+	bool expanded = false;
+
+	if(debug_gui) {
+		if(parent_expanded) {
+			int flags = children.empty() ? ImGuiTreeNodeFlags_Leaf : 0;
+			expanded = ImGui::TreeNodeEx(name ? name : "<nameless node>", flags);
+		}
+	}
+
 	update_node(dt);
 
 	int num = children.size();
 	for(int i=0; i<num; i++) {
+		parent_expanded = expanded;
 		children[i]->update(dt);
 	}
+
+	if(debug_gui && expanded) {
+		ImGui::TreePop();
+	}
 }
 
 void SceneNode::apply_xform()
@@ -261,3 +282,55 @@ bool SceneNode::intersect(const Ray &ray, HitPoint *hit) const
 	}
 	return false;
 }
+
+const AABox &SceneNode::calc_local_bounds()
+{
+	local_bvol = AABox(Vec3(FLT_MAX, FLT_MAX, FLT_MAX), Vec3(-FLT_MAX, -FLT_MAX, -FLT_MAX));
+
+	// calculate the axis-aligned bounding box of all objects in this node
+	int nobj = obj.size();
+	for(int i=0; i<nobj; i++) {
+		AABox tmp = obj[i]->get_aabox();
+		calc_bounding_aabox(&local_bvol, &local_bvol, &tmp);
+	}
+
+	local_bvol_valid = true;
+	return local_bvol;
+}
+
+const AABox &SceneNode::get_local_bounds() const
+{
+	if(!local_bvol_valid) {
+		((SceneNode*)this)->calc_local_bounds();
+	}
+	return local_bvol;
+}
+
+AABox SceneNode::get_node_bounds() const
+{
+	get_local_bounds();	// validate local_bvol
+
+	// calculate the transformed local_bvol
+	Box node_bbox = Box(local_bvol, xform);
+
+	// then calculate the axis-aligned bounding box
+	AABox aabox;
+	calc_bounding_aabox(&aabox, &node_bbox);
+	return aabox;
+}
+
+AABox SceneNode::get_bounds() const
+{
+	AABox sub_aabb = AABox(Vec3(FLT_MAX, FLT_MAX, FLT_MAX), Vec3(-FLT_MAX, -FLT_MAX, -FLT_MAX));
+
+	// calculate the bounding box of all children
+	int nchild = children.size();
+	for(int i=0; i<nchild; i++) {
+		AABox tmp = children[i]->get_bounds();
+		calc_bounding_aabox(&sub_aabb, &sub_aabb, &tmp);
+	}
+
+	AABox aabb;
+	calc_bounding_aabox(&aabb, &local_bvol, &sub_aabb);
+	return aabb;
+}