C++ LLMessageSystem::addVector3方法代码示例

void send_ObjectGrab_message(LLViewerObject* object, const LLPickInfo & pick, const LLVector3 &grab_offset)
{
	if (!object) return;

	LLMessageSystem	*msg = gMessageSystem;

	msg->newMessageFast(_PREHASH_ObjectGrab);
	msg->nextBlockFast( _PREHASH_AgentData);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
	msg->nextBlockFast( _PREHASH_ObjectData);
	msg->addU32Fast(    _PREHASH_LocalID, object->mLocalID);
	msg->addVector3Fast(_PREHASH_GrabOffset, grab_offset);
	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( object->getRegion()->getHost());

	/*  Diagnostic code
	llinfos << "mUVCoords: " << pick.mUVCoords
			<< ", mSTCoords: " << pick.mSTCoords
			<< ", mObjectFace: " << pick.mObjectFace
			<< ", mIntersection: " << pick.mIntersection
			<< ", mNormal: " << pick.mNormal
			<< ", mBinormal: " << pick.mBinormal
			<< llendl;

	llinfos << "Avatar pos: " << gAgent.getPositionAgent() << llendl;
	llinfos << "Object pos: " << object->getPosition() << llendl;
	*/
}

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::startGrab()
{
	// Compute grab_offset in the OBJECT's root's coordinate frame
	// (sometimes root == object)
	LLViewerObject* objectp = mGrabPick.getObject();
	if (!objectp)
	{
		return;
	}

	LLViewerObject *root = (LLViewerObject *)objectp->getRoot();

	// drag from center
	LLVector3d grab_start_global = root->getPositionGlobal();

	// Where the grab starts, relative to the center of the root object of the set.
	// JC - This code looks wonky, but I believe it does the right thing.
	// Otherwise, when you grab a linked object set, it "pops" on the start
	// of the drag.
	LLVector3d grab_offsetd = root->getPositionGlobal() - objectp->getPositionGlobal();

	LLVector3 grab_offset;
	grab_offset.setVec(grab_offsetd);

	LLQuaternion rotation = root->getRotation();
	rotation.conjQuat();
	grab_offset = grab_offset * rotation;

	// This planar drag starts at the grab point
	mDragStartPointGlobal = grab_start_global;
	mDragStartFromCamera = grab_start_global - gAgent.getCameraPositionGlobal();

	LLMessageSystem	*msg = gMessageSystem;
	msg->newMessageFast(_PREHASH_ObjectGrab);
	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->addVector3Fast(_PREHASH_GrabOffset, grab_offset );
	msg->nextBlock("SurfaceInfo");
	msg->addVector3("UVCoord", LLVector3(mGrabPick.mUVCoords));
	msg->addVector3("STCoord", LLVector3(mGrabPick.mSTCoords));
	msg->addS32Fast(_PREHASH_FaceIndex, mGrabPick.mObjectFace);
	msg->addVector3("Position", mGrabPick.mIntersection);
	msg->addVector3("Normal", mGrabPick.mNormal);
	msg->addVector3("Binormal", mGrabPick.mBinormal);
	msg->sendMessage( objectp->getRegion()->getHost());

	mGrabOffsetFromCenterInitial = grab_offset;
	mGrabHiddenOffsetFromCamera = mDragStartFromCamera;

	mGrabTimer.reset();
}

void send_ObjectDeGrab_message(LLViewerObject* object, const LLPickInfo & pick)
{
	if (!object) return;

	LLMessageSystem	*msg = gMessageSystem;

	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, object->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(object->getRegion()->getHost());
}

void LuaTouch(const LLUUID& id)
{	
	LLViewerObject* object = gObjectList.findObject(id);
	if(!object)
	{
		LuaError("No Object Found");
		return;
	}
	LLMessageSystem *msg = gMessageSystem;

	msg->newMessageFast(_PREHASH_ObjectGrab);
	msg->nextBlockFast( _PREHASH_AgentData);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
	msg->nextBlockFast( _PREHASH_ObjectData);
	msg->addU32Fast(    _PREHASH_LocalID, object->mLocalID);
	msg->addVector3Fast(_PREHASH_GrabOffset, LLVector3::zero );
	msg->nextBlock("SurfaceInfo");
	msg->addVector3("UVCoord", LLVector3::zero);
	msg->addVector3("STCoord", LLVector3::zero);
	msg->addS32Fast(_PREHASH_FaceIndex, 0);
	msg->addVector3("Position", LLVector3::zero);
	msg->addVector3("Normal", LLVector3::zero);
	msg->addVector3("Binormal", LLVector3::zero);
	msg->sendMessage( object->getRegion()->getHost());

	// *NOTE: Hope the packets arrive safely and in order or else
	// there will be some problems.
	// *TODO: Just fix this bad assumption.
	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, object->mLocalID);
	msg->nextBlock("SurfaceInfo");
	msg->addVector3("UVCoord", LLVector3::zero);
	msg->addVector3("STCoord", LLVector3::zero);
	msg->addS32Fast(_PREHASH_FaceIndex, 0);
	msg->addVector3("Position", LLVector3::zero);
	msg->addVector3("Normal", LLVector3::zero);
	msg->addVector3("Binormal", LLVector3::zero);
	msg->sendMessage(object->getRegion()->getHost());
}

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.........

//.........这里部分代码省略.........
			// For safety, cap heights where objects can be dragged
			if (grab_point_global.mdV[VZ] > MAX_OBJECT_Z)
			{
				grab_point_global.mdV[VZ] = MAX_OBJECT_Z;
			}

			grab_point_global = LLWorld::getInstance()->clipToVisibleRegions(mDragStartPointGlobal, grab_point_global);
			// propagate constrained grab point back to grab offset
			mGrabHiddenOffsetFromCamera = grab_point_global - gAgent.getCameraPositionGlobal();

			// Handle auto-rotation at screen edge.
			LLVector3 grab_pos_agent = gAgent.getPosAgentFromGlobal( grab_point_global );

			LLCoordGL grab_center_gl( gViewerWindow->getWindowWidth() / 2, gViewerWindow->getWindowHeight() / 2);
			LLViewerCamera::getInstance()->projectPosAgentToScreen(grab_pos_agent, grab_center_gl);

			const S32 ROTATE_H_MARGIN = gViewerWindow->getWindowWidth() / 20;
			const F32 ROTATE_ANGLE_PER_SECOND = 30.f * DEG_TO_RAD;
			const F32 rotate_angle = ROTATE_ANGLE_PER_SECOND / gFPSClamped;
			// ...build mode moves camera about focus point
			if (grab_center_gl.mX < ROTATE_H_MARGIN)
			{
				if (gAgent.getFocusOnAvatar())
				{
					gAgent.yaw(rotate_angle);
				}
				else
				{
					gAgent.cameraOrbitAround(rotate_angle);
				}
			}
			else if (grab_center_gl.mX > gViewerWindow->getWindowWidth() - ROTATE_H_MARGIN)
			{
				if (gAgent.getFocusOnAvatar())
				{
					gAgent.yaw(-rotate_angle);
				}
				else
				{
					gAgent.cameraOrbitAround(-rotate_angle);
				}
			}

			// Don't move above top of screen or below bottom
			if ((grab_center_gl.mY < gViewerWindow->getWindowHeight() - 6)
				&& (grab_center_gl.mY > 24))
			{
				// Transmit update to simulator
				LLVector3 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 );
				msg->addVector3Fast(_PREHASH_GrabPosition, grab_pos_region );
				msg->addU32Fast(_PREHASH_TimeSinceLast, dt_milliseconds );
				msg->nextBlock("SurfaceInfo");
				msg->addVector3("UVCoord", LLVector3(mGrabPick.mUVCoords));
				msg->addVector3("STCoord", LLVector3(mGrabPick.mSTCoords));
				msg->addS32Fast(_PREHASH_FaceIndex, mGrabPick.mObjectFace);
				msg->addVector3("Position", mGrabPick.mIntersection);
				msg->addVector3("Normal", mGrabPick.mNormal);
				msg->addVector3("Binormal", mGrabPick.mBinormal);

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

		gViewerWindow->moveCursorToCenter();

		LLSelectMgr::getInstance()->updateSelectionCenter();

	}

	// once we've initiated a drag, lock the camera down
	if (mHasMoved)
	{
		if (!gAgent.cameraMouselook() && 
			!objectp->isHUDAttachment() && 
			objectp->getRoot() == gAgent.getAvatarObject()->getRoot())
		{
			// force focus to point in space where we were looking previously
			gAgent.setFocusGlobal(gAgent.calcFocusPositionTargetGlobal(), LLUUID::null);
			gAgent.setFocusOnAvatar(FALSE, ANIMATE);
		}
		else
		{
			gAgent.clearFocusObject();
		}
	}

	// HACK to avoid assert: error checking system makes sure that the cursor is set during every handleHover.  This is actually a no-op since the cursor is hidden.
	gViewerWindow->setCursor(UI_CURSOR_ARROW);  

	lldebugst(LLERR_USER_INPUT) << "hover handled by LLToolGrab (active) [cursor hidden]" << llendl;		
}