scenenode.cpp

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/*
        Scalable Building Simulator - SceneNode Object
        The Skyscraper Project - Version 2.0
        Copyright (C)2004-2024 Ryan Thoryk
        https://www.skyscrapersim.net
        https://sourceforge.net/projects/skyscraper/
        Contact - ryan@skyscrapersim.net
 
        This program is free software; you can redistribute it and/or
        modify it under the terms of the GNU General Public License
        as published by the Free Software Foundation; either version 2
        of the License, or (at your option) any later version.
 
        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.
 
        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
 
#include <OgreSceneManager.h>
#include <OgreSceneNode.h>
#include "globals.h"
#include "sbs.h"
#include "scenenode.h"
 
namespace SBS {
 
SceneNode::SceneNode(Object *parent, std::string name) : ObjectBase(parent)
{
        SetName(name);
        node = 0;
        Rotation = Vector3::ZERO;
 
        if (!sbs->mSceneManager || !parent)
                return;
 
        //set up scene node
        std::string node_name = GetNameBase() + name;
 
        try
        {
                node = sbs->mSceneManager->createSceneNode(node_name);
        }
        catch (Ogre::Exception &e)
        {
                ReportError("Error creating scene node:\n" + e.getDescription());
                return;
        }
 
        //attach scene node to root, if no parent exists (for engine root object)
        if (!parent->GetParent() && !parent->GetSceneNode())
                sbs->mSceneManager->getRootSceneNode()->addChild(node);
}
 
SceneNode::~SceneNode()
{
        if (node)
                sbs->mSceneManager->destroySceneNode(node);
}
 
void SceneNode::DetachAllObjects()
{
        //detach all movable objects from this scene node
 
        if (node)
                node->detachAllObjects();
}
 
void SceneNode::AddChild(SceneNode *scenenode)
{
        //add a child scene node
 
        if (node && scenenode && scenenode->GetRawSceneNode())
                node->addChild(scenenode->GetRawSceneNode());
}
 
void SceneNode::RemoveChild(SceneNode *scenenode)
{
        //remove a child scene node
 
        if (node && scenenode)
        {
                Ogre::SceneNode *rawnode = scenenode->GetRawSceneNode();
                if (rawnode)
                        node->removeChild(rawnode);
        }
}
 
void SceneNode::ShowBoundingBox(bool value)
{
        //show scene node's 3D bounding box
 
        if (node)
                node->showBoundingBox(value);
}
 
void SceneNode::SetPosition(const Vector3 &position)
{
        //set position of scene node
 
        if (!node)
                return;
 
        if (IsRoot() == false)
                node->_setDerivedPosition(sbs->ToRemote(sbs->ToGlobal(position)));
        else
                node->_setDerivedPosition(sbs->ToRemote(position));
        Update();
}
 
void SceneNode::SetPositionRelative(const Vector3 &position)
{
        //set position of scene node
        //position is relative of parent scene node
 
        if (!node)
                return;
 
        Vector3 pos = sbs->ToRemote(position);
        node->setPosition(pos);
        Update();
}
 
Vector3 SceneNode::GetPosition(bool relative)
{
        //get position of scene node
        //if relative is true, position is relative of parent scene node
 
        if (!node)
                return Vector3::ZERO;
 
        if (relative == false)
        {
                Vector3 pos = GetDerivedPosition();
                if (IsRoot() == false)
                        return sbs->FromGlobal(pos);
                else
                        return pos;
        }
 
        return sbs->ToLocal(node->getPosition());
}
 
void SceneNode::SetRotation(const Vector3 &rotation)
{
        //set rotation of scene node in degrees
        //this sets the rotation of all three vectors
 
        if (!node)
                return;
 
        Rotation = rotation;
 
        if (Rotation.x > 359)
                Rotation.x -= 360;
        if (Rotation.y > 359)
                Rotation.y -= 360;
        if (Rotation.z > 359)
                Rotation.z -= 360;
        if (Rotation.x < 0)
                Rotation.x += 360;
        if (Rotation.y < 0)
                Rotation.y += 360;
        if (Rotation.z < 0)
                Rotation.z += 360;
 
        Quaternion x(Degree(Rotation.x), Vector3::UNIT_X);
        Quaternion y(Degree(Rotation.y), Vector3::NEGATIVE_UNIT_Y);
        Quaternion z(Degree(Rotation.z), Vector3::UNIT_Z);
        Quaternion rot = x * y * z;
 
        SetOrientation(rot, true);
}
 
Vector3 SceneNode::GetRotation()
{
        //get rotation of scene node in degrees
        //this returns the rotation of all three vectors
 
        return Rotation;
}
 
void SceneNode::Update()
{
        //sync positioning
        //this mainly needs to be called on child scenenodes of a parent that has moved/rotated,
        //to recalculate offsets
 
        if (node)
                node->needUpdate();
}
 
Quaternion SceneNode::GetOrientation(bool relative)
{
        //return raw orientation
 
        if (node)
        {
                if (relative == false)
                {
                        if (IsRoot() == false)
                                return sbs->FromGlobal(GetDerivedOrientation());
                        else
                                return GetDerivedOrientation();
                }
                else
                        return node->getOrientation();
        }
 
        return Quaternion::ZERO;
}
 
void SceneNode::SetOrientation(const Quaternion &q, bool relative)
{
        //set raw orientation
 
        if (!node)
                return;
 
        if (relative == false)
        {
                if (IsRoot() == false)
                        node->_setDerivedOrientation(sbs->ToGlobal(q));
                else
                        node->_setDerivedOrientation(q);
        }
        else
                node->setOrientation(q);
 
        Update();
}
 
void SceneNode::Move(const Vector3 &vector, Real speed)
{
        //move this scene node
 
        if (!node)
                return;
 
        Vector3 v = vector * speed;
        node->translate(sbs->ToRemote(v));
 
        Update();
}
 
void SceneNode::AttachObject(Ogre::MovableObject *object)
{
        //attach a movable object to this node
 
        if (node && object)
        {
                try
                {
                        node->attachObject(object);
                }
                catch (Ogre::Exception &e)
                {
                        ReportError("Error attaching object:\n" + e.getDescription());
                }
        }
}
 
void SceneNode::DetachObject(Ogre::MovableObject *object)
{
        //detach a movable object from this node
 
        if (node && object)
        {
                try
                {
                        node->detachObject(object);
                }
                catch (Ogre::Exception &e)
                {
                        if (sbs->Verbose)
                                ReportError("Error detaching object:\n" + e.getDescription());
                }
        }
}
 
Real SceneNode::GetScale()
{
        //get scaling factor
 
        if (node)
                return node->getScale().x;
        return 0.0;
}
 
void SceneNode::SetScale(Real scale)
{
        //set scaling factor
 
        if (!node)
                return;
 
        node->setScale(Vector3(scale, scale, scale));
}
 
SceneNode* SceneNode::CreateChild(std::string name, const Vector3 &offset)
{
        //create a raw child scenenode, at the specified offset
 
        if (!node || !GetParent())
                return 0;
 
        SceneNode *scenenode = new SceneNode(GetParent(), name);
        node->addChild(scenenode->GetRawSceneNode());
        scenenode->Move(offset);
 
        return scenenode;
}
 
std::string SceneNode::GetFullName()
{
        //get full name of a scene node, which includes object ID information
 
        if (!node)
                return "";
 
        return node->getName();
}
 
bool SceneNode::IsRoot()
{
         return (this == sbs->GetSceneNode());
}
 
void SceneNode::Pitch(Real &degree)
{
        //rotate on X axis
 
        node->pitch(Degree(degree));
}
 
void SceneNode::Yaw(Real &degree)
{
        //rotate on Y axis
 
        node->yaw(Degree(-degree));
}
 
void SceneNode::Roll(Real &degree)
{
        //rotate on Z axis
 
        node->roll(Degree(degree));
}
 
Vector3 SceneNode::GetDerivedPosition()
{
        //gets the position of the node as derived from all parents
        return sbs->ToLocal(node->_getDerivedPosition());
}
 
Quaternion SceneNode::GetDerivedOrientation()
{
        //gets the orientation of the node as derived from all parents
 
        return node->_getDerivedOrientation();
}
 
void SceneNode::SetDirection(const Vector3 &direction)
{
        node->setDirection(sbs->ToRemote(direction));
}
 
void SceneNode::LookAt(const Vector3 &point)
{
        node->lookAt(sbs->ToRemote(point), Ogre::Node::TS_PARENT);
}
 
}