174 lines
7.5 KiB
C
174 lines
7.5 KiB
C
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/****************************************************************************
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __intersectutil_H__
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#define __intersectutil_H__
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#include "apputil/mouserayutil.h"
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#include "appframework/actor.h"
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#include "resource/meshres.h"
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#include "terrainfeature/components/TerrainRenderComponent.h"
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#include "vegetationfeature/components/vegetationrendercomponent.h"
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namespace AppUtil
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{
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typedef uint SelectMark;
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struct IntersectResult
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{
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IntersectResult() :intersectPoint(0.0f) { }
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IntersectResult( const GPtr<App::Actor> _actor, Math::scalar _f )
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: actor(_actor)
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, intersectPoint(_f)
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{ }
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GPtr<App::Actor> actor;
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Math::scalar intersectPoint;
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inline bool operator < ( const IntersectResult& rhs ) const
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{
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return this->intersectPoint < rhs.intersectPoint;
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}
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};
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struct IntersectTriangle
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{
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IntersectTriangle() :point0(0.0f),point1(0.0f),point2(0.0f){}
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IntersectTriangle(Math::float3& p1,Math::float3& p2,Math::float3& p3)
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{
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point0 = p1;
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point1 = p2;
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point2 = p3;
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}
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Math::float3 point0;
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Math::float3 point1;
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Math::float3 point2;
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};
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typedef Util::Array<IntersectResult> IntersectResultList;
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class IntersectUtil
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{
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public:
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/// compute world-space ray from mouse position use main camera in game world. (mouse screen position is expected in the range 0..1)
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static bool ComputeDefaultWorldMouseRay( const App::Actor* cameraActor, const Math::float2& mouseScreenPos , Math::Ray& rayout );
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// compute world-space line from mouse position use main camera in game world. (mouse screen position is expected in the range 0..1)
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static bool ComputeDefaultWorldMouseLine(const App::Actor* cameraActor,const Math::float2& mouseScreenPos , Math::line& lineout, float length);
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/**
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* IntersectWorld use ray to intersect world.
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* @param: const Math::Ray & worldRay ray in world space
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* @param: SelectMark selectMask only (the actor's layerID & selectMask) != 0 , the actor will be intersecting. use 0xFFFFFFFF for all Layer
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* @param: bool onlyUseBBox if true, we only intersect actor's boundingbox; if false, we will use exact intersect(eg. triangle intersect), slow!!!!
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* @param: IntersectResultList & result return the actors and nearest intersect points in worldRay. this list not sort, you can manu sort use IntersectResultList::sort
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* @param: Math::scalar fTolerance tolerance, default is N_TINY
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* @return: bool return true, if has some actor intersected.
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* @see:
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* @remark:
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*/
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static bool IntersectWorld( const Math::Ray& worldRay,
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SelectMark selectMask,
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bool onlyUseBBox,
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IntersectResultList& result ,
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Math::scalar fTolerance = N_TINY,
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IntersectTriangle *triAngle = NULL);
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/**
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* IntersectActor use ray to intersect actor
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* @param: const Math::Ray & worldRay ray in world space
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* @param: const GPtr<App::Actor>& actor the actor will intersect with worldRay
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* @param: SelectMark selectMask only (the actor's layerID & selectMask) != 0 , the actor will be intersecting. use 0xFFFFFFFF for all Layer
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* @param: bool onlyUseBBox if true, we only intersect actor's boundingbox; if false, we will use exact intersect(eg. triangle intersect), slow!!!!
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* @param: Math::scalar & fout if intersected, is the nearest in worldRay
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* @param: Math::scalar fTolerance tolerance, default is N_TINY
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* @return: bool return true, if has the actor intersected with worldRay.
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* @see:
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* @remark:
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*/
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static bool IntersectActor( const Math::Ray& worldRay, const GPtr<App::Actor>& actor,
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SelectMark selectMask,
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bool onlyUseBBox,
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Math::scalar& fout,
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Math::scalar fTolerance = N_TINY,
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IntersectTriangle* triAngle = NULL);
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/**
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* IntersectMesh use ray to intersect actor
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* @param: const Math::Ray & localRay ray is mesh's space
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* @param: const GPtr<Resources::MeshRes> & mesh the mesh will intersect with localRay
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* @param: Math::scalar & fout if intersected, is the nearest in localRay
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* @param: Math::scalar fTolerance tolerance, default is N_TINY
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* @return: bool return true, if has the MeshRes intersected with localRay.
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* @see:
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* @remark:
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*/
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static bool IntersectMesh(const Math::Ray& localRay, const GPtr<Resources::MeshRes>& mesh,Math::scalar& fout, Math::scalar fTolerance = N_TINY, IntersectTriangle*triAngle = NULL);
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static bool IntersectTerrainNode(const Math::Ray& localRay, RenderBase::PrimitiveTopology::Code type, App::TerrainNode* node, Math::scalar& fout, Math::scalar fTolerance, IntersectTriangle*triAngle = NULL );
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static bool IntersectTerrainNode_Visbile(const Math::Ray& localRay, RenderBase::PrimitiveTopology::Code type, App::TerrainNode* node, Math::scalar& fout, Math::scalar fTolerance, IntersectTriangle*triAngle = NULL );
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static bool IntersectTerrain(const Math::Ray& localRay, const GPtr<App::TerrainRenderComponent>& TRComponent,Math::scalar& fout, Math::scalar fTolerance, IntersectTriangle*triAngle = NULL );
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static bool IntersectTerrainPos(const Math::Ray& worldRay, const GPtr<App::Actor>& actor, App::LayerID selectLayers, App::TagID selectTags ,
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bool onlyUseBBox, Math::scalar& fout, Math::float3& pos, Math::scalar fTolerance = N_TINY, IntersectTriangle*triAngle = NULL );
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// intersect primitive
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static bool IntersectPrimitive(const Math::Ray& localRay,
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RenderBase::PrimitiveTopology::Code type,
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const Resources::PositionData::value_type* verticies,
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SizeT numVertex,
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Math::scalar& fout,
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Math::scalar fTolerance = N_TINY,
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IntersectTriangle* triAngle = NULL);
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// intersect primitive index by 16 bit
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static bool IntersectPrimitive(const Math::Ray& localRay,
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RenderBase::PrimitiveTopology::Code type,
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const Resources::PositionData::value_type* verticies,
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const Resources::Index16Container::value_type* indicies,
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SizeT indexCount,
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Math::scalar& fout,
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Math::scalar fTolerance = N_TINY,
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IntersectTriangle* triAngle = NULL);
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// intersect primitive index by 32 bit
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static bool IntersectPrimitive(const Math::Ray& localRay,
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RenderBase::PrimitiveTopology::Code type,
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const Resources::PositionData::value_type* verticies,
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const Resources::Index32Container::value_type* indicies,
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SizeT indexCount,
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Math::scalar& fout,
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Math::scalar fTolerance = N_TINY,
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IntersectTriangle* triAngle = NULL);
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};
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}
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#endif // __intersectutil_H__
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