/*
 * Copyright (c) 2008, Willow Garage, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Willow Garage, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "shape.h"
#include <ros/assert.h>

#include <OgreSceneManager.h>
#include <OgreSceneNode.h>
#include <OgreVector3.h>
#include <OgreQuaternion.h>
#include <OgreEntity.h>
#include <OgreMaterialManager.h>
#include <OgreTextureManager.h>
#include <OgreTechnique.h>
#include <stdint.h>

namespace rviz
{

Ogre::Entity* Shape::createEntity(const std::string& name, Type type, Ogre::SceneManager* scene_manager)
{
  if (type == Mesh)
    return NULL; // the entity is initialized after the vertex data was specified

  std::string mesh_name;
  switch (type)
  {
  case Cone:
    mesh_name = "rviz_cone.mesh";
    break;

  case Cube:
    mesh_name = "rviz_cube.mesh";
    break;

  case Cylinder:
    mesh_name = "rviz_cylinder.mesh";
    break;

  case Sphere:
    mesh_name = "rviz_sphere.mesh";
    break;

  default:
    ROS_BREAK();
  }

  return scene_manager->createEntity(name, mesh_name);
}

Shape::Shape( Type type, Ogre::SceneManager* scene_manager, Ogre::SceneNode* parent_node )
: Object( scene_manager )
, type_(type)
{
  static uint32_t count = 0;
  std::stringstream ss;
  ss << "Shape" << count++;

  entity_ = createEntity(ss.str(), type, scene_manager);

  if ( !parent_node )
  {
    parent_node = scene_manager_->getRootSceneNode();
  }

  scene_node_ = parent_node->createChildSceneNode();
  offset_node_ = scene_node_->createChildSceneNode();
  if (entity_)
    offset_node_->attachObject( entity_ );

  ss << "Material";
  material_name_ = ss.str();
  material_ = Ogre::MaterialManager::getSingleton().create( material_name_, ROS_PACKAGE_NAME );
  material_->setReceiveShadows(false);
  material_->getTechnique(0)->setLightingEnabled(true);
  material_->getTechnique(0)->setAmbient( 0.5, 0.5, 0.5 );

  if (entity_)
    entity_->setMaterialName(material_name_);

#if (OGRE_VERSION_MAJOR <= 1 && OGRE_VERSION_MINOR <= 4)
  if (entity_)
    entity_->setNormaliseNormals(true);
#endif
}

Shape::~Shape()
{
  scene_manager_->destroySceneNode( scene_node_->getName() );
  scene_manager_->destroySceneNode( offset_node_->getName() );

  if (entity_)
    scene_manager_->destroyEntity( entity_ );

  material_->unload();
  Ogre::MaterialManager::getSingleton().remove(material_->getName());
}

void Shape::setColor(const Ogre::ColourValue& c)
{
  material_->getTechnique(0)->setAmbient( c * 0.5 );
  material_->getTechnique(0)->setDiffuse( c );

  if ( c.a < 0.9998 )
  {
    material_->getTechnique(0)->setSceneBlending( Ogre::SBT_TRANSPARENT_ALPHA );
    material_->getTechnique(0)->setDepthWriteEnabled( false );
  }
  else
  {
    material_->getTechnique(0)->setSceneBlending( Ogre::SBT_REPLACE );
    material_->getTechnique(0)->setDepthWriteEnabled( true );
  }
}

void Shape::setColor( float r, float g, float b, float a )
{
  setColor(Ogre::ColourValue(r, g, b, a));
}

void Shape::setOffset( const Ogre::Vector3& offset )
{
  offset_node_->setPosition( offset );
}

void Shape::setPosition( const Ogre::Vector3& position )
{
  scene_node_->setPosition( position );
}

void Shape::setOrientation( const Ogre::Quaternion& orientation )
{
  scene_node_->setOrientation( orientation );
}

void Shape::setScale( const Ogre::Vector3& scale )
{
  scene_node_->setScale( scale );
}

const Ogre::Vector3& Shape::getPosition()
{
  return scene_node_->getPosition();
}

const Ogre::Quaternion& Shape::getOrientation()
{
  return scene_node_->getOrientation();
}

void Shape::setUserData( const Ogre::Any& data )
{
  if (entity_)
    entity_->setUserAny( data );
  else
    ROS_ERROR("Shape not yet fully constructed. Cannot set user data. Did you add triangles to the mesh already?");
}

} // namespace rviz

