151 lines
4.9 KiB
C++
151 lines
4.9 KiB
C++
/**
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* @file llkeyframefallmotion.cpp
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* @brief Implementation of LLKeyframeFallMotion class.
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*
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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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//-----------------------------------------------------------------------------
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// Header Files
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//-----------------------------------------------------------------------------
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#include "linden_common.h"
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#include "llkeyframefallmotion.h"
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#include "llcharacter.h"
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#include "m3math.h"
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//-----------------------------------------------------------------------------
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// Macros
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//-----------------------------------------------------------------------------
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#define GO_TO_KEY_POSE 1
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#define MIN_TRACK_SPEED 0.01f
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//-----------------------------------------------------------------------------
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// LLKeyframeFallMotion()
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// Class Constructor
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//-----------------------------------------------------------------------------
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LLKeyframeFallMotion::LLKeyframeFallMotion(const LLUUID &id) : LLKeyframeMotion(id)
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{
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mVelocityZ = 0.f;
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mCharacter = NULL;
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}
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//-----------------------------------------------------------------------------
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// ~LLKeyframeFallMotion()
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// Class Destructor
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//-----------------------------------------------------------------------------
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LLKeyframeFallMotion::~LLKeyframeFallMotion()
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{
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}
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//-----------------------------------------------------------------------------
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// LLKeyframeFallMotion::onInitialize()
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//-----------------------------------------------------------------------------
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LLMotion::LLMotionInitStatus LLKeyframeFallMotion::onInitialize(LLCharacter *character)
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{
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// save character pointer for later use
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mCharacter = character;
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// load keyframe data, setup pose and joint states
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LLMotion::LLMotionInitStatus result = LLKeyframeMotion::onInitialize(character);
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if (result != LLMotion::STATUS_SUCCESS)
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{
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return result;
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}
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for (U32 jm=0; jm<mJointMotionList->getNumJointMotions(); jm++)
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{
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if (!mJointStates[jm]->getJoint())
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continue;
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if (mJointStates[jm]->getJoint()->getName() == std::string("mPelvis"))
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{
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mPelvisState = mJointStates[jm];
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}
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}
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return result;
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}
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//-----------------------------------------------------------------------------
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// LLKeyframeFallMotion::onActivate()
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//-----------------------------------------------------------------------------
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bool LLKeyframeFallMotion::onActivate()
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{
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LLVector3 ground_pos;
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LLVector3 ground_normal;
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LLQuaternion inverse_pelvis_rot;
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LLVector3 fwd_axis(1.f, 0.f, 0.f);
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mVelocityZ = -mCharacter->getCharacterVelocity().mV[VZ];
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mCharacter->getGround( mCharacter->getCharacterPosition(), ground_pos, ground_normal);
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ground_normal.normVec();
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inverse_pelvis_rot = mCharacter->getCharacterRotation();
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inverse_pelvis_rot.transQuat();
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// find ground normal in pelvis space
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ground_normal = ground_normal * inverse_pelvis_rot;
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// calculate new foward axis
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fwd_axis = fwd_axis - (ground_normal * (ground_normal * fwd_axis));
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fwd_axis.normVec();
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mRotationToGroundNormal = LLQuaternion(fwd_axis, ground_normal % fwd_axis, ground_normal);
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return LLKeyframeMotion::onActivate();
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}
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//-----------------------------------------------------------------------------
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// LLKeyframeFallMotion::onUpdate()
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//-----------------------------------------------------------------------------
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bool LLKeyframeFallMotion::onUpdate(F32 activeTime, U8* joint_mask)
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{
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LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
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bool result = LLKeyframeMotion::onUpdate(activeTime, joint_mask);
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F32 slerp_amt = clamp_rescale(activeTime / getDuration(), 0.5f, 0.75f, 0.f, 1.f);
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if (mPelvisState.notNull())
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{
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mPelvisState->setRotation(mPelvisState->getRotation() * slerp(slerp_amt, mRotationToGroundNormal, LLQuaternion()));
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}
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return result;
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}
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//-----------------------------------------------------------------------------
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// LLKeyframeFallMotion::getEaseInDuration()
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//-----------------------------------------------------------------------------
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F32 LLKeyframeFallMotion::getEaseInDuration()
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{
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if (mVelocityZ == 0.f)
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{
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// we've already hit the ground
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return 0.4f;
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}
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return mCharacter->getPreferredPelvisHeight() / mVelocityZ;
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}
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// End
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