diff options
Diffstat (limited to 'indra/llmath/llcamera.h')
| -rwxr-xr-x[-rw-r--r--] | indra/llmath/llcamera.h | 86 |
1 files changed, 49 insertions, 37 deletions
diff --git a/indra/llmath/llcamera.h b/indra/llmath/llcamera.h index 922d6f9fac..321b8ddcc4 100644..100755 --- a/indra/llmath/llcamera.h +++ b/indra/llmath/llcamera.h @@ -31,6 +31,7 @@ #include "llmath.h" #include "llcoordframe.h" #include "llplane.h" +#include "llvector4a.h" const F32 DEFAULT_FIELD_OF_VIEW = 60.f * DEG_TO_RAD; const F32 DEFAULT_ASPECT_RATIO = 640.f / 480.f; @@ -50,15 +51,6 @@ const F32 MIN_FAR_PLANE = 0.2f; static const F32 MIN_FIELD_OF_VIEW = 5.0f * DEG_TO_RAD; static const F32 MAX_FIELD_OF_VIEW = 175.f * DEG_TO_RAD; -static const LLVector3 X_AXIS(1.f,0.f,0.f); -static const LLVector3 Y_AXIS(0.f,1.f,0.f); -static const LLVector3 Z_AXIS(0.f,0.f,1.f); - -static const LLVector3 NEG_X_AXIS(-1.f,0.f,0.f); -static const LLVector3 NEG_Y_AXIS(0.f,-1.f,0.f); -static const LLVector3 NEG_Z_AXIS(0.f,0.f,-1.f); - - // An LLCamera is an LLCoorFrame with a view frustum. // This means that it has several methods for moving it around // that are inherited from the LLCoordFrame() class : @@ -68,36 +60,55 @@ static const LLVector3 NEG_Z_AXIS(0.f,0.f,-1.f); // roll(), pitch(), yaw() // etc... - +LL_ALIGN_PREFIX(16) class LLCamera : public LLCoordFrame { public: + + LLCamera(const LLCamera& rhs) + { + *this = rhs; + } + enum { PLANE_LEFT = 0, PLANE_RIGHT = 1, PLANE_BOTTOM = 2, PLANE_TOP = 3, - PLANE_NUM = 4 + PLANE_NUM = 4, + PLANE_MASK_NONE = 0xff // Disable this plane }; enum { PLANE_LEFT_MASK = (1<<PLANE_LEFT), PLANE_RIGHT_MASK = (1<<PLANE_RIGHT), PLANE_BOTTOM_MASK = (1<<PLANE_BOTTOM), PLANE_TOP_MASK = (1<<PLANE_TOP), - PLANE_ALL_MASK = 0xf + PLANE_ALL_MASK = 0xf, }; enum - { + { // Indexes to mAgentPlanes[] and mPlaneMask[] AGENT_PLANE_LEFT = 0, - AGENT_PLANE_RIGHT, - AGENT_PLANE_NEAR, - AGENT_PLANE_BOTTOM, - AGENT_PLANE_TOP, - AGENT_PLANE_FAR, + AGENT_PLANE_RIGHT = 1, + AGENT_PLANE_NEAR = 2, + AGENT_PLANE_BOTTOM = 3, + AGENT_PLANE_TOP = 4, + AGENT_PLANE_FAR = 5, + AGENT_PLANE_USER_CLIP = 6 + }; + enum + { // Sizes for mAgentPlanes[]. 7th entry is special case for user clip + AGENT_PLANE_NO_USER_CLIP_NUM = 6, + AGENT_PLANE_USER_CLIP_NUM = 7, + PLANE_MASK_NUM = 8 // 7 actually used, 8 is for alignment }; + enum + { + AGENT_FRUSTRUM_NUM = 8 + }; + enum { HORIZ_PLANE_LEFT = 0, HORIZ_PLANE_RIGHT = 1, @@ -110,43 +121,41 @@ public: }; private: + LL_ALIGN_16(LLPlane mAgentPlanes[AGENT_PLANE_USER_CLIP_NUM]); //frustum planes in agent space a la gluUnproject (I'm a bastard, I know) - DaveP + LL_ALIGN_16(LLPlane mRegionPlanes[AGENT_PLANE_USER_CLIP_NUM]); //frustum planes in a local region space, derived from mAgentPlanes + LL_ALIGN_16(LLPlane mLastAgentPlanes[AGENT_PLANE_USER_CLIP_NUM]); + U8 mPlaneMask[PLANE_MASK_NUM]; // 8 for alignment + F32 mView; // angle between top and bottom frustum planes in radians. F32 mAspect; // width/height S32 mViewHeightInPixels; // for ViewHeightInPixels() only F32 mNearPlane; F32 mFarPlane; - LLPlane mLocalPlanes[4]; + LL_ALIGN_16(LLPlane mLocalPlanes[PLANE_NUM]); F32 mFixedDistance; // Always return this distance, unless < 0 LLVector3 mFrustCenter; // center of frustum and radius squared for ultra-quick exclusion test F32 mFrustRadiusSquared; - LLPlane mWorldPlanes[PLANE_NUM]; - LLPlane mHorizPlanes[HORIZ_PLANE_NUM]; - - struct frustum_plane - { - frustum_plane() : mask(0) {} - LLPlane p; - U8 mask; - }; - frustum_plane mAgentPlanes[7]; //frustum planes in agent space a la gluUnproject (I'm a bastard, I know) - DaveP + LL_ALIGN_16(LLPlane mWorldPlanes[PLANE_NUM]); + LL_ALIGN_16(LLPlane mHorizPlanes[HORIZ_PLANE_NUM]); U32 mPlaneCount; //defaults to 6, if setUserClipPlane is called, uses user supplied clip plane in LLVector3 mWorldPlanePos; // Position of World Planes (may be offset from camera) public: - LLVector3 mAgentFrustum[8]; //8 corners of 6-plane frustum + LLVector3 mAgentFrustum[AGENT_FRUSTRUM_NUM]; //8 corners of 6-plane frustum F32 mFrustumCornerDist; //distance to corner of frustum against far clip plane - LLPlane getAgentPlane(U32 idx) { return mAgentPlanes[idx].p; } + LLPlane& getAgentPlane(U32 idx) { return mAgentPlanes[idx]; } public: LLCamera(); LLCamera(F32 vertical_fov_rads, F32 aspect_ratio, S32 view_height_in_pixels, F32 near_plane, F32 far_plane); - virtual ~LLCamera(){} // no-op virtual destructor + virtual ~LLCamera(); + + bool isChanged(); //check if mAgentPlanes changed since last frame. - void setUserClipPlane(LLPlane plane); + void setUserClipPlane(LLPlane& plane); void disableUserClipPlane(); - U8 calcPlaneMask(const LLPlane& plane); virtual void setView(F32 vertical_fov_rads); void setViewHeightInPixels(S32 height); void setAspect(F32 new_aspect); @@ -185,6 +194,7 @@ public: // Return number of bytes copied. size_t readFrustumFromBuffer(const char *buffer); void calcAgentFrustumPlanes(LLVector3* frust); + void calcRegionFrustumPlanes(const LLVector3& shift, F32 far_clip_distance); //calculate regional planes from mAgentPlanes. void ignoreAgentFrustumPlane(S32 idx); // Returns 1 if partly in, 2 if fully in. @@ -193,8 +203,10 @@ public: S32 sphereInFrustum(const LLVector3 ¢er, const F32 radius) const; S32 pointInFrustum(const LLVector3 &point) const { return sphereInFrustum(point, 0.0f); } S32 sphereInFrustumFull(const LLVector3 ¢er, const F32 radius) const { return sphereInFrustum(center, radius); } - S32 AABBInFrustum(const LLVector3 ¢er, const LLVector3& radius); - S32 AABBInFrustumNoFarClip(const LLVector3 ¢er, const LLVector3& radius); + S32 AABBInFrustum(const LLVector4a& center, const LLVector4a& radius, const LLPlane* planes = NULL); + S32 AABBInRegionFrustum(const LLVector4a& center, const LLVector4a& radius); + S32 AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius, const LLPlane* planes = NULL); + S32 AABBInRegionFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius); //does a quick 'n dirty sphere-sphere check S32 sphereInFrustumQuick(const LLVector3 &sphere_center, const F32 radius); @@ -215,7 +227,7 @@ protected: void calculateFrustumPlanes(F32 left, F32 right, F32 top, F32 bottom); void calculateFrustumPlanesFromWindow(F32 x1, F32 y1, F32 x2, F32 y2); void calculateWorldFrustumPlanes(); -}; +} LL_ALIGN_POSTFIX(16); #endif |