C++ LLPickInfo::getSurfaceInfo方法代码示例

void LLToolGrab::stopGrab()
{
	LLViewerObject* objectp = mGrabPick.getObject();
	if (!objectp)
	{
		return;
	}

	LLPickInfo pick = mGrabPick;

	if (mMode == GRAB_NONPHYSICAL)
	{
		// for non-physical (touch) grabs,
		// gather surface info for this degrab (mouse-up)
		S32 x = gViewerWindow->getCurrentMouseX();
		S32 y = gViewerWindow->getCurrentMouseY();
		pick.mMousePt = LLCoordGL(x, y);
		pick.getSurfaceInfo();
	}

	// Next, send messages to simulator
	LLMessageSystem *msg = gMessageSystem;
	switch(mMode)
	{
	case GRAB_ACTIVE_CENTER:
	case GRAB_NONPHYSICAL:
	case GRAB_LOCKED:
		msg->newMessageFast(_PREHASH_ObjectDeGrab);
		msg->nextBlockFast(_PREHASH_AgentData);
		msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
		msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
		msg->nextBlockFast(_PREHASH_ObjectData);
		msg->addU32Fast(_PREHASH_LocalID, objectp->mLocalID);
		msg->nextBlock("SurfaceInfo");
		msg->addVector3("UVCoord", LLVector3(pick.mUVCoords));
		msg->addVector3("STCoord", LLVector3(pick.mSTCoords));
		msg->addS32Fast(_PREHASH_FaceIndex, pick.mObjectFace);
		msg->addVector3("Position", pick.mIntersection);
		msg->addVector3("Normal", pick.mNormal);
		msg->addVector3("Binormal", pick.mBinormal);

		msg->sendMessage(objectp->getRegion()->getHost());

		mVerticalDragging = FALSE;
		break;

	case GRAB_NOOBJECT:
	case GRAB_INACTIVE:
	default:
		// do nothing
		break;
	}

	mHideBuildHighlight = FALSE;
}

void LLToolGrab::stopGrab()
{
	LLViewerObject* objectp = mGrabPick.getObject();
	if (!objectp)
	{
		return;
	}

	LLPickInfo pick = mGrabPick;

	if (mMode == GRAB_NONPHYSICAL)
	{
		// for non-physical (touch) grabs,
		// gather surface info for this degrab (mouse-up)
		S32 x = gViewerWindow->getCurrentMouseX();
		S32 y = gViewerWindow->getCurrentMouseY();
		pick.mMousePt = LLCoordGL(x, y);
		pick.getSurfaceInfo();
	}

	// Next, send messages to simulator
	switch(mMode)
	{
	case GRAB_ACTIVE_CENTER:
	case GRAB_NONPHYSICAL:
	case GRAB_LOCKED:
		send_ObjectDeGrab_message(objectp, pick);
		mVerticalDragging = FALSE;
		break;

	case GRAB_NOOBJECT:
	case GRAB_INACTIVE:
	default:
		// do nothing
		break;
	}

	mHideBuildHighlight = FALSE;
}

void LLToolGrab::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
{
	LLViewerObject* objectp = mGrabPick.getObject();
	if (!objectp || !hasMouseCapture() ) return;
	if (objectp->isDead())
	{
		// Bail out of drag because object has been killed
		setMouseCapture(FALSE);
		return;
	}

	LLPickInfo pick = mGrabPick;
	pick.mMousePt = LLCoordGL(x, y);
	pick.getSurfaceInfo();

	// compute elapsed time
	F32 dt = mGrabTimer.getElapsedTimeAndResetF32();
	U32 dt_milliseconds = (U32) (1000.f * dt);

	// i'm not a big fan of the following code - it's been culled from the physical grab case.
	// ideally these two would be nicely integrated - but the code in that method is a serious
	// mess of spaghetti.  so here we go:

	LLVector3 grab_pos_region(0,0,0);
	
	const BOOL SUPPORT_LLDETECTED_GRAB = TRUE;
	if (SUPPORT_LLDETECTED_GRAB)
	{
		//--------------------------------------------------
		// Toggle vertical dragging
		//--------------------------------------------------
		if (mVerticalDragging && !(mask == MASK_VERTICAL) && !gGrabBtnVertical)
		{
			mVerticalDragging = FALSE;
		}
	
		else if (!mVerticalDragging && (mask == MASK_VERTICAL) )
		{
			mVerticalDragging = TRUE;
		}
	
		S32 dx = x - mLastMouseX;
		S32 dy = y - mLastMouseY;

		if (dx != 0 || dy != 0)
		{
			mAccumDeltaX += dx;
			mAccumDeltaY += dy;
		
			S32 dist_sq = mAccumDeltaX * mAccumDeltaX + mAccumDeltaY * mAccumDeltaY;
			if (dist_sq > SLOP_DIST_SQ)
			{
				mOutsideSlop = TRUE;
			}

			// mouse has moved 
			mHasMoved = TRUE;

			//------------------------------------------------------
			// Handle grabbing
			//------------------------------------------------------

			LLVector3d x_part;
			x_part.setVec(LLViewerCamera::getInstance()->getLeftAxis());
			x_part.mdV[VZ] = 0.0;
			x_part.normVec();

			LLVector3d y_part;
			if( mVerticalDragging )
			{
				y_part.setVec(LLViewerCamera::getInstance()->getUpAxis());
				// y_part.setVec(0.f, 0.f, 1.f);
			}
			else
			{
				// drag toward camera
				y_part = x_part % LLVector3d::z_axis;
				y_part.mdV[VZ] = 0.0;
				y_part.normVec();
			}

			mGrabHiddenOffsetFromCamera = mGrabHiddenOffsetFromCamera 
				+ (x_part * (-dx * GRAB_SENSITIVITY_X)) 
				+ (y_part * ( dy * GRAB_SENSITIVITY_Y));

		}
		
		// need to return offset from mGrabStartPoint
		LLVector3d grab_point_global = gAgent.getCameraPositionGlobal() + mGrabHiddenOffsetFromCamera;
		grab_pos_region = objectp->getRegion()->getPosRegionFromGlobal( grab_point_global );
	}

	LLMessageSystem *msg = gMessageSystem;
	msg->newMessageFast(_PREHASH_ObjectGrabUpdate);
	msg->nextBlockFast(_PREHASH_AgentData);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
	msg->nextBlockFast(_PREHASH_ObjectData);
	msg->addUUIDFast(_PREHASH_ObjectID, objectp->getID() );
	msg->addVector3Fast(_PREHASH_GrabOffsetInitial, mGrabOffsetFromCenterInitial );
//.........这里部分代码省略.........