pxmlw6n2f/Gazebo_Distributed_MPI/gazebo/rendering/DynamicRenderable.hh

114 lines
4.6 KiB
C++

/*
* Copyright (C) 2012 Open Source Robotics Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef _DYNAMICRENDERABLE_HH_
#define _DYNAMICRENDERABLE_HH_
#include <string>
#include "gazebo/rendering/ogre_gazebo.h"
#include "gazebo/rendering/RenderTypes.hh"
#include "gazebo/util/system.hh"
namespace gazebo
{
namespace rendering
{
/// \addtogroup gazebo_rendering
/// \{
/// \class DynamicRenderable DynamicRenderable.hh rendering/rendering.hh
/// \brief Abstract base class providing mechanisms for dynamically
/// growing hardware buffers.
class GZ_RENDERING_VISIBLE DynamicRenderable : public Ogre::SimpleRenderable
{
/// \brief Constructor
public: DynamicRenderable();
/// \brief Virtual destructor
public: virtual ~DynamicRenderable();
/// \brief Initializes the dynamic renderable.
/// \remarks This function should only be called once. It initializes the
/// render operation, and calls the abstract function
/// CreateVertexDeclaration().
/// \param[in] _opType The type of render operation to perform.
/// \param[in] _useIndices Specifies whether to use indices to
/// determine the vertices to use as input.
public: void Init(RenderOpType _opType, bool _useIndices = false);
/// \brief Set the render operation type
/// \param[in] _opType The type of render operation to perform.
public: void SetOperationType(RenderOpType _opType);
/// \brief Get the render operation type
/// \return The render operation type.
public: RenderOpType GetOperationType() const;
/// \brief Implementation of Ogre::SimpleRenderable
/// \return The bounding radius
public: virtual Ogre::Real getBoundingRadius() const;
/// \brief Implementation of Ogre::SimpleRenderable
/// \param[in] _cam Pointer to the Ogre camera that views the
/// renderable.
/// \return The squared depth in the Camera's view
public: virtual Ogre::Real getSquaredViewDepth(
const Ogre::Camera *_cam) const;
/// \brief Get type of movable
/// \return This returns "gazebo::DynamicRenderable"
public: std::string GetMovableType() const;
/// \brief Creates the vertex declaration. @remarks Override and set
/// mRenderOp.vertexData->vertexDeclaration here. mRenderOp.vertexData
/// will be created for you before this method is called.
protected: virtual void CreateVertexDeclaration() = 0;
/// \brief Prepares the hardware buffers for the requested vertex and
/// index counts.
/// \remarks
/// This function must be called before locking the buffers in
/// fillHardwareBuffers(). It guarantees that the hardware buffers
/// are large enough to hold at least the requested number of
/// vertices and indices (if using indices). The buffers are
/// possibly reallocated to achieve this.
/// \par The vertex and index count in the render operation are set to
/// the values of vertexCount and indexCount respectively.
/// \param[in] _vertexCount The number of vertices the buffer must hold.
/// \param[in] _indexCount The number of indices the buffer must hold.
/// This parameter is ignored if not using indices.
protected: void PrepareHardwareBuffers(size_t _vertexCount,
size_t _indexCount);
/// \brief Fills the hardware vertex and index buffers with data.
/// @remarks
/// This function must call prepareHardwareBuffers() before locking the
/// buffers to ensure the they are large enough for the data to be
/// written. Afterwards the vertex and index buffers (if using indices)
/// can be locked, and data can be written to them.
protected: virtual void FillHardwareBuffers() = 0;
/// \brief Maximum capacity of the currently allocated vertex buffer.
protected: size_t vertexBufferCapacity;
/// \brief Maximum capacity of the currently allocated index buffer.
protected: size_t indexBufferCapacity;
};
/// \}
}
}
#endif