llkeyframefallmotion.cpp
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- /**
- * @file llkeyframefallmotion.cpp
- * @brief Implementation of LLKeyframeFallMotion class.
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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.
- * $/LicenseInfo$
- */
- //-----------------------------------------------------------------------------
- // Header Files
- //-----------------------------------------------------------------------------
- #include "linden_common.h"
- #include "llkeyframefallmotion.h"
- #include "llcharacter.h"
- #include "m3math.h"
- //-----------------------------------------------------------------------------
- // Macros
- //-----------------------------------------------------------------------------
- #define GO_TO_KEY_POSE 1
- #define MIN_TRACK_SPEED 0.01f
- //-----------------------------------------------------------------------------
- // LLKeyframeFallMotion()
- // Class Constructor
- //-----------------------------------------------------------------------------
- LLKeyframeFallMotion::LLKeyframeFallMotion(const LLUUID &id) : LLKeyframeMotion(id)
- {
- mVelocityZ = 0.f;
- mCharacter = NULL;
- }
- //-----------------------------------------------------------------------------
- // ~LLKeyframeFallMotion()
- // Class Destructor
- //-----------------------------------------------------------------------------
- LLKeyframeFallMotion::~LLKeyframeFallMotion()
- {
- }
- //-----------------------------------------------------------------------------
- // LLKeyframeFallMotion::onInitialize()
- //-----------------------------------------------------------------------------
- LLMotion::LLMotionInitStatus LLKeyframeFallMotion::onInitialize(LLCharacter *character)
- {
- // save character pointer for later use
- mCharacter = character;
- // load keyframe data, setup pose and joint states
- LLMotion::LLMotionInitStatus result = LLKeyframeMotion::onInitialize(character);
- for (U32 jm=0; jm<mJointMotionList->getNumJointMotions(); jm++)
- {
- if (!mJointStates[jm]->getJoint())
- continue;
- if (mJointStates[jm]->getJoint()->getName() == std::string("mPelvis"))
- {
- mPelvisState = mJointStates[jm];
- }
- }
- return result;
- }
- //-----------------------------------------------------------------------------
- // LLKeyframeFallMotion::onActivate()
- //-----------------------------------------------------------------------------
- BOOL LLKeyframeFallMotion::onActivate()
- {
- LLVector3 ground_pos;
- LLVector3 ground_normal;
- LLQuaternion inverse_pelvis_rot;
- LLVector3 fwd_axis(1.f, 0.f, 0.f);
- mVelocityZ = -mCharacter->getCharacterVelocity().mV[VZ];
- mCharacter->getGround( mCharacter->getCharacterPosition(), ground_pos, ground_normal);
- ground_normal.normVec();
- inverse_pelvis_rot = mCharacter->getCharacterRotation();
- inverse_pelvis_rot.transQuat();
- // find ground normal in pelvis space
- ground_normal = ground_normal * inverse_pelvis_rot;
- // calculate new foward axis
- fwd_axis = fwd_axis - (ground_normal * (ground_normal * fwd_axis));
- fwd_axis.normVec();
- mRotationToGroundNormal = LLQuaternion(fwd_axis, ground_normal % fwd_axis, ground_normal);
- return LLKeyframeMotion::onActivate();
- }
- //-----------------------------------------------------------------------------
- // LLKeyframeFallMotion::onUpdate()
- //-----------------------------------------------------------------------------
- BOOL LLKeyframeFallMotion::onUpdate(F32 activeTime, U8* joint_mask)
- {
- BOOL result = LLKeyframeMotion::onUpdate(activeTime, joint_mask);
- F32 slerp_amt = clamp_rescale(activeTime / getDuration(), 0.5f, 0.75f, 0.f, 1.f);
- if (mPelvisState.notNull())
- {
- mPelvisState->setRotation(mPelvisState->getRotation() * slerp(slerp_amt, mRotationToGroundNormal, LLQuaternion()));
- }
- return result;
- }
- //-----------------------------------------------------------------------------
- // LLKeyframeFallMotion::getEaseInDuration()
- //-----------------------------------------------------------------------------
- F32 LLKeyframeFallMotion::getEaseInDuration()
- {
- if (mVelocityZ == 0.f)
- {
- // we've already hit the ground
- return 0.4f;
- }
- return mCharacter->getPreferredPelvisHeight() / mVelocityZ;
- }
- // End