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/* Copyright (C) 2011 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* File : Scene.h
* Project : graphics
* Description : This file contains the interfaces that are used to send a
* : scene to the renderer, and for the renderer to query objects
* : in that scene.
*
* @note This file would fit just as well into the graphics/ subdirectory.
**/
#ifndef INCLUDED_SCENE
#define INCLUDED_SCENE
class CFrustum;
class CModel;
class CModelAbstract;
class CModelDecal;
class CParticleEmitter;
class CPatch;
class CLOSTexture;
class CTerritoryTexture;
struct SOverlayLine;
struct SOverlayTexturedLine;
struct SOverlaySprite;
struct SOverlayQuad;
struct SOverlaySphere;
class SceneCollector;
/**
* This interface describes a scene to the renderer.
*
* @see CRenderer::RenderScene
*/
class Scene
{
public:
virtual ~Scene() {}
/**
* Send all objects that can be seen when rendering the given frustum
* to the scene collector.
* @param frustum The frustum that will be used for rendering.
* @param c The scene collector that should receive objects inside the frustum
* that are visible.
*/
virtual void EnumerateObjects(const CFrustum& frustum, SceneCollector* c) = 0;
/**
* Return the LOS texture to be used for rendering this scene.
*/
virtual CLOSTexture& GetLOSTexture() = 0;
/**
* Return the territory texture to be used for rendering this scene.
*/
virtual CTerritoryTexture& GetTerritoryTexture() = 0;
};
/**
* This interface accepts renderable objects.
*
* @see Scene::EnumerateObjects
*/
class SceneCollector
{
public:
virtual ~SceneCollector() {}
/**
* Submit a terrain patch that is part of the scene.
*/
virtual void Submit(CPatch* patch) = 0;
/**
* Submit a line-based overlay.
*/
virtual void Submit(SOverlayLine* overlay) = 0;
/**
* Submit a textured line overlay.
*/
virtual void Submit(SOverlayTexturedLine* overlay) = 0;
/**
* Submit a sprite overlay.
*/
virtual void Submit(SOverlaySprite* overlay) = 0;
/**
* Submit a textured quad overlay.
*/
virtual void Submit(SOverlayQuad* overlay) = 0;
/**
* Submit a sphere overlay.
*/
virtual void Submit(SOverlaySphere* overlay) = 0;
/**
* Submit a terrain decal.
*/
virtual void Submit(CModelDecal* decal) = 0;
/**
* Submit a particle emitter.
*/
virtual void Submit(CParticleEmitter* emitter) = 0;
/**
* Submit a model that is part of the scene,
* without submitting attached models.
*/
virtual void SubmitNonRecursive(CModel* model) = 0;
/**
* Submit a model that is part of the scene,
* including attached sub-models.
*
* @note This function is implemented using SubmitNonRecursive,
* so you shouldn't have to reimplement it.
*/
virtual void SubmitRecursive(CModelAbstract* model);
};
#endif // INCLUDED_SCENE
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