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/*
   Copyright (c) 2016 DIVIDE-Studio
   Copyright (c) 2009 Ionut Cava

   This file is part of DIVIDE Framework.

   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software
   and associated documentation files (the "Software"), to deal in the Software
   without restriction,
   including without limitation the rights to use, copy, modify, merge, publish,
   distribute, sublicense,
   and/or sell copies of the Software, and to permit persons to whom the
   Software is furnished to do so,
   subject to the following conditions:

   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED,
   INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
   PARTICULAR PURPOSE AND NONINFRINGEMENT.
   IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
   DAMAGES OR OTHER LIABILITY,
   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
   IN CONNECTION WITH THE SOFTWARE
   OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

#ifndef _FRUSTUM_H_
#define _FRUSTUM_H_

#include "Core/Math/Headers/MathMatrices.h"
#include "Core/Math/Headers/Plane.h"

namespace Divide {

class Camera;
class BoundingBox;
class Frustum {
   protected:
    friend class Camera;
    Frustum(Camera& parentCamera);
    void Extract(const mat4<F32>& viewMatrix, const mat4<F32>& projectionMatrix);

   public:
    enum class FrustCollision : U32 {
        FRUSTUM_OUT = 0,
        FRUSTUM_IN = 1,
        FRUSTUM_INTERSECT = 2
    };

    FrustCollision ContainsPoint(const vec3<F32>& point) const;
    FrustCollision ContainsBoundingBox(const BoundingBox& bbox) const;
    FrustCollision ContainsSphere(const vec3<F32>& center, F32 radius) const;

    // Get the frustum corners in WorldSpace. cornerWS must be a vector with at
    // least 8 allocated slots
    void getCornersWorldSpace(vectorImpl<vec3<F32> >& cornersWS);
    // Get the frustum corners in ViewSpace. cornerVS must be a vector with at
    // least 8 allocated slots
    void getCornersViewSpace(vectorImpl<vec3<F32> >& cornersVS);

   private:
    /// Get the point where the 3 specified planes intersect
    void intersectionPoint(const Plane<F32>& a, const Plane<F32>& b,
                           const Plane<F32>& c, vec3<F32>& outResult);
    void updatePoints();

   private:
    Camera& _parentCamera;
    bool _pointsDirty;
    vec3<F32> _frustumPoints[8];
    Plane<F32> _frustumPlanes[6];
    mat4<F32> _viewProjectionMatrixCache;
};

};  // namespace Divide

#endif

Commits for Divide-Framework/trunk/Source Code/Rendering/Camera/Headers/Frustum.h

Diff revisions: vs.
Revision Author Commited Message
779 Diff Diff IonutCava picture IonutCava Mon 10 Oct, 2016 15:31:45 +0000

[IonutCava]
- Frustum calculation bug fix

648 Diff Diff IonutCava picture IonutCava Sun 21 Feb, 2016 16:32:52 +0000

[IonutCava]
- Update copyright notice
- Move BoundingBox and BoundingSphere to a new BoundsComponent
— Add a temp hack in SceneGraphNode to update these

420 Diff Diff IonutCava picture IonutCava Mon 04 May, 2015 16:30:23 +0000

[Ionut]
- Bug fixes:
— Upload bone buffers for every rendering stage (not just display). Solves bad shadow pass skinning when the node hasn’t entered the display pass view frustum yet
— Fix translucency check logic in Material and avoid creating an opacity map if it uses the same texture as the albedo map. Transparency will be automatically picked up from the albedo map. Solves transparent materials not discarding the needed pixels.
— Fix camera world matrix retrieval. Solves bad shadow camera computations if the main scene camera isn’t wasn’t moved often.
— Removed DSA_EXT texture update methods and replaced them with normal bind->edit methods. DSA_EXT is still buggy on AMD with Catalyst 15.4b

366 Diff Diff IonutCava picture IonutCava Tue 10 Mar, 2015 16:56:30 +0000

[Ionut]
- More type safe enum replacement

350 Diff Diff IonutCava picture IonutCava Tue 10 Feb, 2015 16:25:39 +0000

[Ionut]
- Simplified some Util-namespace level functions by using STL algorithms where possible
- Formatted the entire codebase using clang-format with the following style: "{BasedOnStyle: Google, IndentWidth: 4}"
- Attempted to make ProfileTimer thread-safe (temp fix until std::chrono works properly in Visual Studio)

343 Diff Diff IonutCava picture IonutCava Thu 15 Jan, 2015 17:30:12 +0000

[Ionut]
- Refactored 2 singletons into static classes (Console and TerrainLoader)
- Changed some C-casts to static_casts
- Updated copyright notices

337 Diff Diff IonutCava picture IonutCava Wed 17 Dec, 2014 17:25:16 +0000

[Ionut]
- Replaced all tabs with 4 spaces (some spacing may be off now. no way to check all the files.)
- Moved implementation details for ParamHandler, BoundingBox, BoundingSphere and ProfileTimer to proper .inl and .cpp files. (more to follow)
- Update all forward declared enums with the required storage type (as requested by the C++11 standard)

333 Diff Diff IonutCava picture IonutCava Tue 09 Dec, 2014 16:15:44 +0000

[Ionut]
- Removed “core.h” and moved everything to their appropriate header files
- Renamed MathClasses to MathMatrices (finally)
- Renamed “-Inl.h” files to ".inl"
- Some String wrapper refactoring
- Update “InstallLibraries.bat” so that it still offers valid options

331 Diff Diff IonutCava picture IonutCava Sat 06 Dec, 2014 20:53:45 +0000

[Ionut]
- Limited line length to 132 characters to improve readability and diff-comparisons
- Refactored memory allocation/deallocation functions
- Fixed a few compatibility issues with HashMap.h
- Fixed a bug in GPU Skinning shaders (cast a float to int)

318 IonutCava picture IonutCava Sat 30 Aug, 2014 17:35:53 +0000

[Ionut]
- Wrapped the entire code in a “Divide” namespace
- VertexBuffers now call “shrink_to_fit” on all internal data storage
- Improved some vector performance by preferring “emplace_back” instead of “push_back” + proepr usage of reserve / resize
- Wrapped OIS specific types and classes in Divide::Input namespace
- Added the messageBox.layout file (forgot it in the previous few commits)