merge r97380-98701 branches/viewer/viewer_1-21 (Viewer RC5 and security fixes) merge to trunk (for real)

1 files changed, 54 insertions, 18 deletions

diff --git a/indra/newview/lltoolgrab.cpp b/indra/newview/lltoolgrab.cpp
index f824ce4861..735114567c 100644
--- a/indra/newview/lltoolgrab.cpp
+++ b/indra/newview/lltoolgrab.cpp
@@ -400,6 +400,14 @@ void LLToolGrab::startGrab()
 	mGrabHiddenOffsetFromCamera = mDragStartFromCamera;
 
 	mGrabTimer.reset();
+
+	mLastUVCoords = mGrabPick.mUVCoords;
+	mLastSTCoords = mGrabPick.mSTCoords;
+	mLastFace = mGrabPick.mObjectFace;
+	mLastIntersection = mGrabPick.mIntersection;
+	mLastNormal = mGrabPick.mNormal;
+	mLastBinormal = mGrabPick.mBinormal;
+	mLastGrabPos = LLVector3(-1.f, -1.f, -1.f);
 }
 
 
@@ -797,26 +805,54 @@ void LLToolGrab::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
 		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(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() );
+	// only send message if something has changed since last message
+	
+	BOOL changed_since_last_update = FALSE;
+
+	// test if touch data needs to be updated
+	if ((pick.mObjectFace != mLastFace) ||
+		(pick.mUVCoords != mLastUVCoords) ||
+		(pick.mSTCoords != mLastSTCoords) ||
+		(pick.mIntersection != mLastIntersection) ||
+		(pick.mNormal != mLastNormal) ||
+		(pick.mBinormal != mLastBinormal) ||
+		(grab_pos_region != mLastGrabPos))
+	{
+		changed_since_last_update = TRUE;
+	}
 
+	if (changed_since_last_update)
+	{
+		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(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() );
+
+		mLastUVCoords = pick.mUVCoords;
+		mLastSTCoords = pick.mSTCoords;
+		mLastFace = pick.mObjectFace;
+		mLastIntersection = pick.mIntersection;
+		mLastNormal= pick.mNormal;
+		mLastBinormal= pick.mBinormal;
+		mLastGrabPos = grab_pos_region;
+	}
+	
 	// update point-at / look-at
 	if (pick.mObjectFace != -1) // if the intersection was on the surface of the obejct
 	{