/** * @file llkeyframefallmotion.cpp * @brief Implementation of LLKeyframeFallMotion class. * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ //----------------------------------------------------------------------------- // 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