735 lines
27 KiB
C++
735 lines
27 KiB
C++
/*
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* OPCODE - Optimized Collision Detection
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* http://www.codercorner.com/Opcode.htm
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*
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* Copyright (c) 2001-2008 Pierre Terdiman, pierre@codercorner.com
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This software is provided 'as-is', without any express or implied warranty.
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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,
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including commercial applications, and to alter it and redistribute it freely,
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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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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Contains code for an LSS collider.
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* \file OPC_LSSCollider.cpp
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* \author Pierre Terdiman
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* \date December, 28, 2002
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Contains a lss-vs-tree collider.
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*
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* \class LSSCollider
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* \author Pierre Terdiman
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* \version 1.3
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* \date December, 28, 2002
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Precompiled Header
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#include "Stdafx.h"
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using namespace Opcode;
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#include "OPC_LSSAABBOverlap.h"
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#include "OPC_LSSTriOverlap.h"
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#define SET_CONTACT(prim_index, flag) \
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/* Set contact status */ \
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mFlags |= flag; \
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mTouchedPrimitives->Add(prim_index);
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//! LSS-triangle overlap test
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#define LSS_PRIM(prim_index, flag) \
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/* Request vertices from the app */ \
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VertexPointers VP; mIMesh->GetTriangle(VP, prim_index); \
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\
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/* Perform LSS-tri overlap test */ \
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if(LSSTriOverlap(*VP.Vertex[0], *VP.Vertex[1], *VP.Vertex[2])) \
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{ \
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SET_CONTACT(prim_index, flag) \
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Constructor.
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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LSSCollider::LSSCollider()
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{
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// mCenter.Zero();
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// mRadius2 = 0.0f;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Destructor.
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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LSSCollider::~LSSCollider()
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Generic collision query for generic OPCODE models. After the call, access the results:
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* - with GetContactStatus()
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* - with GetNbTouchedPrimitives()
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* - with GetTouchedPrimitives()
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*
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* \param cache [in/out] an lss cache
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* \param lss [in] collision lss in local space
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* \param model [in] Opcode model to collide with
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* \param worldl [in] lss world matrix, or null
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* \param worldm [in] model's world matrix, or null
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* \return true if success
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* \warning SCALE NOT SUPPORTED. The matrices must contain rotation & translation parts only.
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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bool LSSCollider::Collide(LSSCache& cache, const LSS& lss, const Model& model, const Matrix4x4* worldl, const Matrix4x4* worldm)
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{
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// Checkings
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if(!Setup(&model)) return false;
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// Init collision query
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if(InitQuery(cache, lss, worldl, worldm)) return true;
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if(!model.HasLeafNodes())
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{
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if(model.IsQuantized())
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{
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const AABBQuantizedNoLeafTree* Tree = (const AABBQuantizedNoLeafTree*)model.GetTree();
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// Setup dequantization coeffs
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mCenterCoeff = Tree->mCenterCoeff;
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mExtentsCoeff = Tree->mExtentsCoeff;
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// Perform collision query
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if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes());
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else _Collide(Tree->GetNodes());
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}
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else
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{
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const AABBNoLeafTree* Tree = (const AABBNoLeafTree*)model.GetTree();
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// Perform collision query
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if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes());
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else _Collide(Tree->GetNodes());
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}
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}
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else
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{
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if(model.IsQuantized())
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{
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const AABBQuantizedTree* Tree = (const AABBQuantizedTree*)model.GetTree();
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// Setup dequantization coeffs
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mCenterCoeff = Tree->mCenterCoeff;
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mExtentsCoeff = Tree->mExtentsCoeff;
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// Perform collision query
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if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes());
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else _Collide(Tree->GetNodes());
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}
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else
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{
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const AABBCollisionTree* Tree = (const AABBCollisionTree*)model.GetTree();
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// Perform collision query
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if(SkipPrimitiveTests()) _CollideNoPrimitiveTest(Tree->GetNodes());
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else _Collide(Tree->GetNodes());
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}
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}
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return true;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Initializes a collision query :
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* - reset stats & contact status
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* - setup matrices
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* - check temporal coherence
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*
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* \param cache [in/out] an lss cache
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* \param lss [in] lss in local space
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* \param worldl [in] lss world matrix, or null
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* \param worldm [in] model's world matrix, or null
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* \return TRUE if we can return immediately
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* \warning SCALE NOT SUPPORTED. The matrices must contain rotation & translation parts only.
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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BOOL LSSCollider::InitQuery(LSSCache& cache, const LSS& lss, const Matrix4x4* worldl, const Matrix4x4* worldm)
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{
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// 1) Call the base method
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VolumeCollider::InitQuery();
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// 2) Compute LSS in model space:
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// - Precompute R^2
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mRadius2 = lss.mRadius * lss.mRadius;
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// - Compute segment
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mSeg.mP0 = lss.mP0;
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mSeg.mP1 = lss.mP1;
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// -> to world space
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if(worldl)
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{
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mSeg.mP0 *= *worldl;
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mSeg.mP1 *= *worldl;
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}
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// -> to model space
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if(worldm)
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{
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// Invert model matrix
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Matrix4x4 InvWorldM;
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InvertPRMatrix(InvWorldM, *worldm);
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mSeg.mP0 *= InvWorldM;
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mSeg.mP1 *= InvWorldM;
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}
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// 3) Setup destination pointer
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mTouchedPrimitives = &cache.TouchedPrimitives;
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// 4) Special case: 1-triangle meshes [Opcode 1.3]
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if(mCurrentModel && mCurrentModel->HasSingleNode())
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{
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if(!SkipPrimitiveTests())
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{
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// We simply perform the BV-Prim overlap test each time. We assume single triangle has index 0.
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mTouchedPrimitives->Reset();
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// Perform overlap test between the unique triangle and the LSS (and set contact status if needed)
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LSS_PRIM(udword(0), OPC_CONTACT)
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// Return immediately regardless of status
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return TRUE;
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}
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}
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// 5) Check temporal coherence :
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if(TemporalCoherenceEnabled())
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{
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// Here we use temporal coherence
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// => check results from previous frame before performing the collision query
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if(FirstContactEnabled())
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{
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// We're only interested in the first contact found => test the unique previously touched face
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if(mTouchedPrimitives->GetNbEntries())
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{
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// Get index of previously touched face = the first entry in the array
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udword PreviouslyTouchedFace = mTouchedPrimitives->GetEntry(0);
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// Then reset the array:
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// - if the overlap test below is successful, the index we'll get added back anyway
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// - if it isn't, then the array should be reset anyway for the normal query
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mTouchedPrimitives->Reset();
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// Perform overlap test between the cached triangle and the LSS (and set contact status if needed)
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LSS_PRIM(PreviouslyTouchedFace, OPC_TEMPORAL_CONTACT)
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// Return immediately if possible
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if(GetContactStatus()) return TRUE;
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}
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// else no face has been touched during previous query
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// => we'll have to perform a normal query
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}
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else
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{
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// We're interested in all contacts =>test the new real LSS N(ew) against the previous fat LSS P(revious):
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// ### rewrite this
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LSS Test(mSeg, lss.mRadius); // in model space
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LSS Previous(cache.Previous, sqrtf(cache.Previous.mRadius));
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// if(cache.Previous.Contains(Test))
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if(IsCacheValid(cache) && Previous.Contains(Test))
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{
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// - if N is included in P, return previous list
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// => we simply leave the list (mTouchedFaces) unchanged
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// Set contact status if needed
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if(mTouchedPrimitives->GetNbEntries()) mFlags |= OPC_TEMPORAL_CONTACT;
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// In any case we don't need to do a query
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return TRUE;
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}
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else
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{
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// - else do the query using a fat N
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// Reset cache since we'll about to perform a real query
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mTouchedPrimitives->Reset();
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// Make a fat sphere so that coherence will work for subsequent frames
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mRadius2 *= cache.FatCoeff;
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// mRadius2 = (lss.mRadius * cache.FatCoeff)*(lss.mRadius * cache.FatCoeff);
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// Update cache with query data (signature for cached faces)
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cache.Previous.mP0 = mSeg.mP0;
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cache.Previous.mP1 = mSeg.mP1;
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cache.Previous.mRadius = mRadius2;
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}
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}
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}
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else
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{
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// Here we don't use temporal coherence => do a normal query
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mTouchedPrimitives->Reset();
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}
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return FALSE;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Collision query for vanilla AABB trees.
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* \param cache [in/out] an lss cache
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* \param lss [in] collision lss in world space
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* \param tree [in] AABB tree
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* \return true if success
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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bool LSSCollider::Collide(LSSCache& cache, const LSS& lss, const AABBTree* tree)
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{
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// This is typically called for a scene tree, full of -AABBs-, not full of triangles.
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// So we don't really have "primitives" to deal with. Hence it doesn't work with
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// "FirstContact" + "TemporalCoherence".
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ASSERT( !(FirstContactEnabled() && TemporalCoherenceEnabled()) );
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// Checkings
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if(!tree) return false;
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// Init collision query
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if(InitQuery(cache, lss)) return true;
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// Perform collision query
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_Collide(tree);
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return true;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Checks the LSS completely contains the box. In which case we can end the query sooner.
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* \param bc [in] box center
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* \param be [in] box extents
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* \return true if the LSS contains the whole box
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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inline_ BOOL LSSCollider::LSSContainsBox(const Point& bc, const Point& be)
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{
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// Not implemented
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return FALSE;
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}
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#define TEST_BOX_IN_LSS(center, extents) \
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if(LSSContainsBox(center, extents)) \
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{ \
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/* Set contact status */ \
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mFlags |= OPC_CONTACT; \
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_Dump(node); \
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return; \
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Recursive collision query for normal AABB trees.
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* \param node [in] current collision node
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void LSSCollider::_Collide(const AABBCollisionNode* node)
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{
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// Perform LSS-AABB overlap test
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if(!LSSAABBOverlap(node->mAABB.mCenter, node->mAABB.mExtents)) return;
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TEST_BOX_IN_LSS(node->mAABB.mCenter, node->mAABB.mExtents)
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if(node->IsLeaf())
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{
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LSS_PRIM(node->GetPrimitive(), OPC_CONTACT)
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}
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else
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{
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_Collide(node->GetPos());
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if(ContactFound()) return;
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_Collide(node->GetNeg());
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Recursive collision query for normal AABB trees, without primitive tests.
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* \param node [in] current collision node
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void LSSCollider::_CollideNoPrimitiveTest(const AABBCollisionNode* node)
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{
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// Perform LSS-AABB overlap test
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if(!LSSAABBOverlap(node->mAABB.mCenter, node->mAABB.mExtents)) return;
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TEST_BOX_IN_LSS(node->mAABB.mCenter, node->mAABB.mExtents)
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if(node->IsLeaf())
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{
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SET_CONTACT(node->GetPrimitive(), OPC_CONTACT)
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}
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else
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{
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_CollideNoPrimitiveTest(node->GetPos());
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if(ContactFound()) return;
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_CollideNoPrimitiveTest(node->GetNeg());
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Recursive collision query for quantized AABB trees.
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* \param node [in] current collision node
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void LSSCollider::_Collide(const AABBQuantizedNode* node)
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{
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// Dequantize box
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const QuantizedAABB& Box = node->mAABB;
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const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z);
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const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z);
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// Perform LSS-AABB overlap test
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if(!LSSAABBOverlap(Center, Extents)) return;
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TEST_BOX_IN_LSS(Center, Extents)
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if(node->IsLeaf())
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{
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LSS_PRIM(node->GetPrimitive(), OPC_CONTACT)
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}
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else
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{
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_Collide(node->GetPos());
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if(ContactFound()) return;
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_Collide(node->GetNeg());
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Recursive collision query for quantized AABB trees, without primitive tests.
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* \param node [in] current collision node
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void LSSCollider::_CollideNoPrimitiveTest(const AABBQuantizedNode* node)
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{
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// Dequantize box
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const QuantizedAABB& Box = node->mAABB;
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const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z);
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const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z);
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// Perform LSS-AABB overlap test
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if(!LSSAABBOverlap(Center, Extents)) return;
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TEST_BOX_IN_LSS(Center, Extents)
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if(node->IsLeaf())
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{
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SET_CONTACT(node->GetPrimitive(), OPC_CONTACT)
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}
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else
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{
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_CollideNoPrimitiveTest(node->GetPos());
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if(ContactFound()) return;
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_CollideNoPrimitiveTest(node->GetNeg());
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Recursive collision query for no-leaf AABB trees.
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* \param node [in] current collision node
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void LSSCollider::_Collide(const AABBNoLeafNode* node)
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{
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// Perform LSS-AABB overlap test
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if(!LSSAABBOverlap(node->mAABB.mCenter, node->mAABB.mExtents)) return;
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TEST_BOX_IN_LSS(node->mAABB.mCenter, node->mAABB.mExtents)
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if(node->HasPosLeaf()) { LSS_PRIM(node->GetPosPrimitive(), OPC_CONTACT) }
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else _Collide(node->GetPos());
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if(ContactFound()) return;
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if(node->HasNegLeaf()) { LSS_PRIM(node->GetNegPrimitive(), OPC_CONTACT) }
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else _Collide(node->GetNeg());
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Recursive collision query for no-leaf AABB trees, without primitive tests.
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* \param node [in] current collision node
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void LSSCollider::_CollideNoPrimitiveTest(const AABBNoLeafNode* node)
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{
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// Perform LSS-AABB overlap test
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if(!LSSAABBOverlap(node->mAABB.mCenter, node->mAABB.mExtents)) return;
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TEST_BOX_IN_LSS(node->mAABB.mCenter, node->mAABB.mExtents)
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if(node->HasPosLeaf()) { SET_CONTACT(node->GetPosPrimitive(), OPC_CONTACT) }
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else _CollideNoPrimitiveTest(node->GetPos());
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if(ContactFound()) return;
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if(node->HasNegLeaf()) { SET_CONTACT(node->GetNegPrimitive(), OPC_CONTACT) }
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else _CollideNoPrimitiveTest(node->GetNeg());
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Recursive collision query for quantized no-leaf AABB trees.
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* \param node [in] current collision node
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void LSSCollider::_Collide(const AABBQuantizedNoLeafNode* node)
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{
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// Dequantize box
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const QuantizedAABB& Box = node->mAABB;
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const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z);
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|
const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z);
|
|
|
|
// Perform LSS-AABB overlap test
|
|
if(!LSSAABBOverlap(Center, Extents)) return;
|
|
|
|
TEST_BOX_IN_LSS(Center, Extents)
|
|
|
|
if(node->HasPosLeaf()) { LSS_PRIM(node->GetPosPrimitive(), OPC_CONTACT) }
|
|
else _Collide(node->GetPos());
|
|
|
|
if(ContactFound()) return;
|
|
|
|
if(node->HasNegLeaf()) { LSS_PRIM(node->GetNegPrimitive(), OPC_CONTACT) }
|
|
else _Collide(node->GetNeg());
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/**
|
|
* Recursive collision query for quantized no-leaf AABB trees, without primitive tests.
|
|
* \param node [in] current collision node
|
|
*/
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
void LSSCollider::_CollideNoPrimitiveTest(const AABBQuantizedNoLeafNode* node)
|
|
{
|
|
// Dequantize box
|
|
const QuantizedAABB& Box = node->mAABB;
|
|
const Point Center(float(Box.mCenter[0]) * mCenterCoeff.x, float(Box.mCenter[1]) * mCenterCoeff.y, float(Box.mCenter[2]) * mCenterCoeff.z);
|
|
const Point Extents(float(Box.mExtents[0]) * mExtentsCoeff.x, float(Box.mExtents[1]) * mExtentsCoeff.y, float(Box.mExtents[2]) * mExtentsCoeff.z);
|
|
|
|
// Perform LSS-AABB overlap test
|
|
if(!LSSAABBOverlap(Center, Extents)) return;
|
|
|
|
TEST_BOX_IN_LSS(Center, Extents)
|
|
|
|
if(node->HasPosLeaf()) { SET_CONTACT(node->GetPosPrimitive(), OPC_CONTACT) }
|
|
else _CollideNoPrimitiveTest(node->GetPos());
|
|
|
|
if(ContactFound()) return;
|
|
|
|
if(node->HasNegLeaf()) { SET_CONTACT(node->GetNegPrimitive(), OPC_CONTACT) }
|
|
else _CollideNoPrimitiveTest(node->GetNeg());
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/**
|
|
* Recursive collision query for vanilla AABB trees.
|
|
* \param node [in] current collision node
|
|
*/
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
void LSSCollider::_Collide(const AABBTreeNode* node)
|
|
{
|
|
// Perform LSS-AABB overlap test
|
|
Point Center, Extents;
|
|
node->GetAABB()->GetCenter(Center);
|
|
node->GetAABB()->GetExtents(Extents);
|
|
if(!LSSAABBOverlap(Center, Extents)) return;
|
|
|
|
if(node->IsLeaf() || LSSContainsBox(Center, Extents))
|
|
{
|
|
mFlags |= OPC_CONTACT;
|
|
mTouchedPrimitives->Add(node->GetPrimitives(), node->GetNbPrimitives());
|
|
}
|
|
else
|
|
{
|
|
_Collide(node->GetPos());
|
|
_Collide(node->GetNeg());
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/**
|
|
* Constructor.
|
|
*/
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
HybridLSSCollider::HybridLSSCollider()
|
|
{
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/**
|
|
* Destructor.
|
|
*/
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
HybridLSSCollider::~HybridLSSCollider()
|
|
{
|
|
}
|
|
|
|
bool HybridLSSCollider::Collide(LSSCache& cache, const LSS& lss, const HybridModel& model, const Matrix4x4* worldl, const Matrix4x4* worldm)
|
|
{
|
|
// We don't want primitive tests here!
|
|
mFlags |= OPC_NO_PRIMITIVE_TESTS;
|
|
|
|
// Checkings
|
|
if(!Setup(&model)) return false;
|
|
|
|
// Init collision query
|
|
if(InitQuery(cache, lss, worldl, worldm)) return true;
|
|
|
|
// Special case for 1-leaf trees
|
|
if(mCurrentModel && mCurrentModel->HasSingleNode())
|
|
{
|
|
// Here we're supposed to perform a normal query, except our tree has a single node, i.e. just a few triangles
|
|
udword Nb = mIMesh->GetNbTriangles();
|
|
|
|
// Loop through all triangles
|
|
for(udword i=0;i<Nb;i++)
|
|
{
|
|
LSS_PRIM(i, OPC_CONTACT)
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Override destination array since we're only going to get leaf boxes here
|
|
mTouchedBoxes.Reset();
|
|
mTouchedPrimitives = &mTouchedBoxes;
|
|
|
|
// Now, do the actual query against leaf boxes
|
|
if(!model.HasLeafNodes())
|
|
{
|
|
if(model.IsQuantized())
|
|
{
|
|
const AABBQuantizedNoLeafTree* Tree = (const AABBQuantizedNoLeafTree*)model.GetTree();
|
|
|
|
// Setup dequantization coeffs
|
|
mCenterCoeff = Tree->mCenterCoeff;
|
|
mExtentsCoeff = Tree->mExtentsCoeff;
|
|
|
|
// Perform collision query - we don't want primitive tests here!
|
|
_CollideNoPrimitiveTest(Tree->GetNodes());
|
|
}
|
|
else
|
|
{
|
|
const AABBNoLeafTree* Tree = (const AABBNoLeafTree*)model.GetTree();
|
|
|
|
// Perform collision query - we don't want primitive tests here!
|
|
_CollideNoPrimitiveTest(Tree->GetNodes());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(model.IsQuantized())
|
|
{
|
|
const AABBQuantizedTree* Tree = (const AABBQuantizedTree*)model.GetTree();
|
|
|
|
// Setup dequantization coeffs
|
|
mCenterCoeff = Tree->mCenterCoeff;
|
|
mExtentsCoeff = Tree->mExtentsCoeff;
|
|
|
|
// Perform collision query - we don't want primitive tests here!
|
|
_CollideNoPrimitiveTest(Tree->GetNodes());
|
|
}
|
|
else
|
|
{
|
|
const AABBCollisionTree* Tree = (const AABBCollisionTree*)model.GetTree();
|
|
|
|
// Perform collision query - we don't want primitive tests here!
|
|
_CollideNoPrimitiveTest(Tree->GetNodes());
|
|
}
|
|
}
|
|
|
|
// We only have a list of boxes so far
|
|
if(GetContactStatus())
|
|
{
|
|
// Reset contact status, since it currently only reflects collisions with leaf boxes
|
|
Collider::InitQuery();
|
|
|
|
// Change dest container so that we can use built-in overlap tests and get collided primitives
|
|
cache.TouchedPrimitives.Reset();
|
|
mTouchedPrimitives = &cache.TouchedPrimitives;
|
|
|
|
// Read touched leaf boxes
|
|
udword Nb = mTouchedBoxes.GetNbEntries();
|
|
const udword* Touched = mTouchedBoxes.GetEntries();
|
|
|
|
const LeafTriangles* LT = model.GetLeafTriangles();
|
|
const udword* Indices = model.GetIndices();
|
|
|
|
// Loop through touched leaves
|
|
while(Nb--)
|
|
{
|
|
const LeafTriangles& CurrentLeaf = LT[*Touched++];
|
|
|
|
// Each leaf box has a set of triangles
|
|
udword NbTris = CurrentLeaf.GetNbTriangles();
|
|
if(Indices)
|
|
{
|
|
const udword* T = &Indices[CurrentLeaf.GetTriangleIndex()];
|
|
|
|
// Loop through triangles and test each of them
|
|
while(NbTris--)
|
|
{
|
|
udword TriangleIndex = *T++;
|
|
LSS_PRIM(TriangleIndex, OPC_CONTACT)
|
|
}
|
|
}
|
|
else
|
|
{
|
|
udword BaseIndex = CurrentLeaf.GetTriangleIndex();
|
|
|
|
// Loop through triangles and test each of them
|
|
while(NbTris--)
|
|
{
|
|
udword TriangleIndex = BaseIndex++;
|
|
LSS_PRIM(TriangleIndex, OPC_CONTACT)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|