From 38d6d37f2d982fa959e9e8a4a3f7e1ccfad7b5d4 Mon Sep 17 00:00:00 2001
From: Jacek Antonelli
Date: Fri, 15 Aug 2008 23:44:46 -0500
Subject: Second Life viewer sources 1.13.2.12

---
 linden/indra/llcharacter/lltargetingmotion.cpp | 170 +++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 linden/indra/llcharacter/lltargetingmotion.cpp

(limited to 'linden/indra/llcharacter/lltargetingmotion.cpp')

diff --git a/linden/indra/llcharacter/lltargetingmotion.cpp b/linden/indra/llcharacter/lltargetingmotion.cpp
new file mode 100644
index 0000000..799e4d0
--- /dev/null
+++ b/linden/indra/llcharacter/lltargetingmotion.cpp
@@ -0,0 +1,170 @@
+/** 
+ * @file lltargetingmotion.cpp
+ * @brief Implementation of LLTargetingMotion class.
+ *
+ * Copyright (c) 2001-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+//-----------------------------------------------------------------------------
+// Header Files
+//-----------------------------------------------------------------------------
+#include "linden_common.h"
+
+#include "lltargetingmotion.h"
+#include "llcharacter.h"
+#include "v3dmath.h"
+#include "llcriticaldamp.h"
+
+//-----------------------------------------------------------------------------
+// Constants
+//-----------------------------------------------------------------------------
+const F32 TORSO_TARGET_HALF_LIFE = 0.25f;
+const F32 MAX_TIME_DELTA = 2.f; //max two seconds a frame for calculating interpolation
+const F32 TARGET_PLANE_THRESHOLD_DOT = 0.6f;
+const F32 TORSO_ROT_FRACTION = 0.5f;
+
+//-----------------------------------------------------------------------------
+// LLTargetingMotion()
+// Class Constructor
+//-----------------------------------------------------------------------------
+LLTargetingMotion::LLTargetingMotion(const LLUUID &id) : LLMotion(id)
+{
+	mCharacter = NULL;
+	mName = "targeting";
+}
+
+
+//-----------------------------------------------------------------------------
+// ~LLTargetingMotion()
+// Class Destructor
+//-----------------------------------------------------------------------------
+LLTargetingMotion::~LLTargetingMotion()
+{
+}
+
+//-----------------------------------------------------------------------------
+// LLTargetingMotion::onInitialize(LLCharacter *character)
+//-----------------------------------------------------------------------------
+LLMotion::LLMotionInitStatus LLTargetingMotion::onInitialize(LLCharacter *character)
+{
+	// save character for future use
+	mCharacter = character;
+
+	mPelvisJoint = mCharacter->getJoint("mPelvis");
+	mTorsoJoint = mCharacter->getJoint("mTorso");
+	mRightHandJoint = mCharacter->getJoint("mWristRight");
+
+	// make sure character skeleton is copacetic
+	if (!mPelvisJoint ||
+		!mTorsoJoint ||
+		!mRightHandJoint)
+	{
+		llwarns << "Invalid skeleton for targeting motion!" << llendl;
+		return STATUS_FAILURE;
+	}
+
+	mTorsoState.setJoint( mTorsoJoint );
+
+	// add joint states to the pose
+	mTorsoState.setUsage(LLJointState::ROT);
+	addJointState( &mTorsoState );
+
+	return STATUS_SUCCESS;
+}
+
+//-----------------------------------------------------------------------------
+// LLTargetingMotion::onActivate()
+//-----------------------------------------------------------------------------
+BOOL LLTargetingMotion::onActivate()
+{
+	return TRUE;
+}
+
+//-----------------------------------------------------------------------------
+// LLTargetingMotion::onUpdate()
+//-----------------------------------------------------------------------------
+BOOL LLTargetingMotion::onUpdate(F32 time, U8* joint_mask)
+{
+	F32 slerp_amt = LLCriticalDamp::getInterpolant(TORSO_TARGET_HALF_LIFE);
+
+	LLVector3 target;
+	LLVector3* lookAtPoint = (LLVector3*)mCharacter->getAnimationData("LookAtPoint");
+
+	BOOL result = TRUE;
+
+	if (!lookAtPoint)
+	{
+		return TRUE;
+	}
+	else
+	{
+		target = *lookAtPoint;
+		target.normVec();
+	}
+	
+	//LLVector3 target_plane_normal = LLVector3(1.f, 0.f, 0.f) * mPelvisJoint->getWorldRotation();
+	//LLVector3 torso_dir = LLVector3(1.f, 0.f, 0.f) * (mTorsoJoint->getWorldRotation() * mTorsoState.getRotation());
+
+	LLVector3 skyward(0.f, 0.f, 1.f);
+	LLVector3 left(skyward % target);
+	left.normVec();
+	LLVector3 up(target % left);
+	up.normVec();
+	LLQuaternion target_aim_rot(target, left, up);
+
+	LLQuaternion cur_torso_rot = mTorsoJoint->getWorldRotation();
+
+	LLVector3 right_hand_at = LLVector3(0.f, -1.f, 0.f) * mRightHandJoint->getWorldRotation();
+	left.setVec(skyward % right_hand_at);
+	left.normVec();
+	up.setVec(right_hand_at % left);
+	up.normVec();
+	LLQuaternion right_hand_rot(right_hand_at, left, up);
+
+	LLQuaternion new_torso_rot = (cur_torso_rot * ~right_hand_rot) * target_aim_rot;
+
+	// find ideal additive rotation to make torso point in correct direction
+	new_torso_rot = new_torso_rot * ~cur_torso_rot;
+
+	// slerp from current additive rotation to ideal additive rotation
+	new_torso_rot = nlerp(slerp_amt, mTorsoState.getRotation(), new_torso_rot);
+
+	// constraint overall torso rotation
+	LLQuaternion total_rot = new_torso_rot * mTorsoJoint->getRotation();
+	total_rot.constrain(F_PI_BY_TWO * 0.8f);
+	new_torso_rot = total_rot * ~mTorsoJoint->getRotation();
+
+	mTorsoState.setRotation(new_torso_rot);
+
+	return result;
+}
+
+//-----------------------------------------------------------------------------
+// LLTargetingMotion::onDeactivate()
+//-----------------------------------------------------------------------------
+void LLTargetingMotion::onDeactivate()
+{
+}
+
+
+// End
-- 
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