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https://github.com/worldforge/ember
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271cf8024f
Put all external code under "external". We can't use too many warnings though since there's a lot of code we don't control.
90 lines
3.5 KiB
C++
90 lines
3.5 KiB
C++
/*-------------------------------------------------------------------------------------
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Copyright (c) 2006 John Judnich
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This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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-------------------------------------------------------------------------------------*/
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//BatchPage.h
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//BatchPage is an extension to PagedGeometry which displays entities as static geometry.
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//-------------------------------------------------------------------------------------
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#ifndef __BatchPage_H__
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#define __BatchPage_H__
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#include "PagedGeometry.h"
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#include "BatchedGeometry.h"
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#include <OgrePrerequisites.h>
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#include <OgreStringConverter.h>
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namespace Forests {
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/**
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\brief The BatchPage class renders entities as StaticGeometry.
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This is one of the geometry page types included in the StaticGeometry engine. These
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page types should be added to a PagedGeometry object with PagedGeometry::addDetailLevel()
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so the PagedGeometry will know how you want your geometry displayed.
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To use this page type, use (the last parameter is optional):
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\code
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PagedGeometry::addDetailLevel<BatchPage>(farRange, transitionLength, Ogre::Any(LODLevel));
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\endcode
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This page type uses batched geometry (Ogre::StaticGeometry) to represent the entities.
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Batched geometry is generally much faster than plain entities, since video card state
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changes and transform calculations can be minimized. Batched geometry can be anywhere
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from 2 to 20 times faster than plain entities.
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"LODLevel" can be used to specify a certain LOD level to use from the added entities.
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This would be useful, for example, if you wanted to add high-res batched trees near the camera,
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and low-res batched trees farther away.
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*/
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class BatchPage: public GeometryPage
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{
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public:
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inline BatchPage() { geom = NULL; }
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virtual void init(PagedGeometry *geom, const Ogre::Any &data);
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~BatchPage();
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void addEntity(Ogre::Entity *ent, const Ogre::Vector3 &position, const Ogre::Quaternion &rotation, const Ogre::Vector3 &scale, const Ogre::ColourValue &color);
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void build();
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void removeEntities();
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void setVisible(bool visible);
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void setFade(bool enabled, Ogre::Real visibleDist, Ogre::Real invisibleDist);
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void addEntityToBoundingBox() {}
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void clearBoundingBox() {}
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const Ogre::AxisAlignedBox &getBoundingBox() { return batch->getBoundingBox(); }
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protected :
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virtual void _updateShaders();
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bool fadeEnabled, shadersSupported;
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Ogre::Real visibleDist, invisibleDist;
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std::vector<Ogre::MaterialPtr> unfadedMaterials;
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Ogre::SceneManager *sceneMgr;
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BatchedGeometry *batch;
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static unsigned long refCount;
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static unsigned long GUID;
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size_t mLODLevel;
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PagedGeometry *geom;
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private:
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static inline Ogre::String getUniqueID(const Ogre::String &prefix)
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{
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return prefix + Ogre::StringConverter::toString(++GUID);
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}
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};
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}
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#endif
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