[1520] | 1 | #ifndef _RayCaster_H__
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| 2 | #define _RayCaster_H__
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| 3 |
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| 4 | #include "Containers.h"
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| 5 | #include <string>
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[1528] | 6 | #include "Vector3.h"
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[2014] | 7 | #include "VssRay.h"
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[1528] | 8 |
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[2176] | 9 | //
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[1520] | 10 |
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| 11 |
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| 12 | namespace GtpVisibilityPreprocessor {
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| 13 |
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| 14 |
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| 15 | class Intersectable;
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| 16 | class VssRay;
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| 17 | class SimpleRayContainer;
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| 18 | class AxisAlignedBox3;
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| 19 | struct VssRayContainer;
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| 20 | class Preprocessor;
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[1528] | 21 | struct SimpleRay;
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[1520] | 22 |
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[1528] | 23 |
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[1520] | 24 | /** This class provides an interface for ray casting.
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| 25 | */
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| 26 | class RayCaster
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| 27 | {
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[1528] | 28 |
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[1520] | 29 | public:
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| 30 |
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| 31 | enum {
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| 32 | INTERNAL_RAYCASTER = 0,
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| 33 | INTEL_RAYCASTER
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| 34 | };
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| 35 |
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| 36 | RayCaster(const Preprocessor &preprocessor);
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| 37 |
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[1521] | 38 | virtual ~RayCaster();
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[1520] | 39 |
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| 40 | virtual int Type() const = 0;
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| 41 |
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[1521] | 42 | /** Wrapper for casting single ray.
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[1545] | 43 | @returns ray or NULL if invalid
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[1521] | 44 | */
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[1932] | 45 | VssRay *CastRay(const SimpleRay &simpleRay,
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[1990] | 46 | const AxisAlignedBox3 &box,
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[1996] | 47 | const bool castDoubleRay);
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[1521] | 48 |
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[1932] | 49 | virtual int CastRay(const SimpleRay &simpleRay,
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| 50 | VssRayContainer &vssRays,
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| 51 | const AxisAlignedBox3 &box,
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| 52 | const bool castDoubleRay,
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[1996] | 53 | const bool pruneInvalidRays = true) = 0;
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[1520] | 54 |
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[2063] | 55 | virtual void CastRays16(SimpleRayContainer &rays,
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| 56 | VssRayContainer &vssRays,
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| 57 | const AxisAlignedBox3 &sbox,
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| 58 | const bool castDoubleRay,
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| 59 | const bool pruneInvalidRays = true) = 0;
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[1974] | 60 |
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[2076] | 61 | virtual void CastRays(
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| 62 | SimpleRayContainer &rays,
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| 63 | VssRayContainer &vssRays,
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| 64 | const AxisAlignedBox3 &sbox,
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| 65 | const bool castDoubleRay,
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| 66 | const bool pruneInvalidRays = true);
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[2077] | 67 |
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| 68 | /*virtual void CastRaysEye4(SimpleRayContainer &rays,
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[2063] | 69 | VssRayContainer &vssRays,
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| 70 | const AxisAlignedBox3 &sbox,
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| 71 | const bool castDoubleRay,
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| 72 | const bool pruneInvalidRays = true) = 0;
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| 73 | */
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| 74 | virtual void
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| 75 | SortRays(SimpleRayContainer &rays);
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[1974] | 76 |
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| 77 |
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[2543] | 78 | // pool of vss rays to be used in one pass of the sampling
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[2559] | 79 | struct VssRayPool
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| 80 | {
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[2543] | 81 | VssRayPool(): mRays(NULL), mIndex(0), mNumber(0)
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| 82 | {}
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[2161] | 83 |
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[2543] | 84 | ~VssRayPool()
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| 85 | {
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| 86 | DEL_PTR(mRays);
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| 87 | }
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| 88 |
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[2559] | 89 | void Reserve(const int number)
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| 90 | {
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[2543] | 91 | DEL_PTR(mRays);
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| 92 | mRays = new VssRay[number];
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| 93 | mNumber = number;
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| 94 | }
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| 95 |
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[2559] | 96 | void Clear()
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| 97 | {
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[2048] | 98 | mIndex = 0;
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[2543] | 99 | }
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[2559] | 100 |
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| 101 | VssRay *Alloc()
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| 102 | {
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[2543] | 103 | // reset pool
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| 104 | if (mIndex == mNumber)
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| 105 | mIndex = 0;
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| 106 | return mRays + mIndex ++;
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| 107 | }
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[2571] | 108 |
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[2543] | 109 | protected:
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[2571] | 110 |
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[2543] | 111 | VssRay *mRays;
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| 112 | int mIndex;
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| 113 | int mNumber;
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| 114 | };
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| 115 |
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| 116 | VssRayPool mVssRayPool;
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| 117 |
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[2559] | 118 | void ReserveVssRayPool(const int n)
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| 119 | {
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[2543] | 120 | mVssRayPool.Reserve(n);
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[2012] | 121 | }
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| 122 |
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[2559] | 123 | void InitPass()
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| 124 | {
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[2543] | 125 | mVssRayPool.Clear();
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| 126 | }
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[2012] | 127 |
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| 128 |
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[1520] | 129 | protected:
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[2187] | 130 |
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| 131 | VssRay *RequestRay(const Vector3 &origin,
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[2543] | 132 | const Vector3 &termination,
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| 133 | Intersectable *originObject,
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| 134 | Intersectable *terminationObject,
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| 135 | const int pass,
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| 136 | const float pdf);
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[2187] | 137 |
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[2543] | 138 | void _SortRays(SimpleRayContainer &rays,
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| 139 | const int l,
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| 140 | const int r,
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| 141 | const int depth,
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| 142 | float box[12]);
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[1520] | 143 |
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[2543] | 144 | struct Intersection
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| 145 | {
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| 146 | Intersection(): mObject(NULL), mFaceId(0)
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| 147 | {}
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[1528] | 148 |
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[2543] | 149 | Intersection(const Vector3 &p, const Vector3 &n, Intersectable *o, const int f):
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| 150 | mPoint(p), mNormal(n), mObject(o), mFaceId(f)
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| 151 | {}
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[1528] | 152 |
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[2543] | 153 | Intersection(const Vector3 &p): mPoint(p), mObject(NULL), mFaceId(0)
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| 154 | {}
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[1824] | 155 |
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[1520] | 156 |
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[2543] | 157 | ////////////
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[1942] | 158 |
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[2543] | 159 | Vector3 mPoint;
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| 160 | Vector3 mNormal;
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| 161 | Intersectable *mObject;
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| 162 | int mFaceId;
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| 163 | };
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[2012] | 164 |
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| 165 |
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[2543] | 166 | int ProcessRay(const SimpleRay &ray,
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| 167 | Intersection &hitA,
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| 168 | Intersection &hitB,
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| 169 | VssRayContainer &vssRays,
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| 170 | const AxisAlignedBox3 &box,
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| 171 | const bool castDoubleRay,
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| 172 | const bool pruneInvalidRays = true);
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[2012] | 173 |
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[2543] | 174 | /** Checks if ray is valid.
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| 175 | I.e., the ray is in valid view space.
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| 176 | @note: clamps the ray to valid view space.
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| 177 | */
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| 178 | bool ValidateRay(const Vector3 &origin,
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| 179 | const Vector3 &direction,
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| 180 | const AxisAlignedBox3 &box,
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| 181 | Intersection &hit);
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[2012] | 182 |
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[2543] | 183 | bool ClipToViewSpaceBox(const Vector3 &origin,
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| 184 | const Vector3 &termination,
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| 185 | Vector3 &clippedOrigin,
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| 186 | Vector3 &clippedTermination);
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[2069] | 187 |
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| 188 |
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[2543] | 189 |
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| 190 |
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| 191 |
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| 192 |
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| 193 | const Preprocessor &mPreprocessor;
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[1520] | 194 | };
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| 195 |
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| 196 |
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| 197 | }
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| 198 |
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| 199 | #endif
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