I was critically damp once. It was okay.

This commit is contained in:
Shyotl
2017-03-14 01:44:26 -05:00
parent 7dd616357f
commit 4a9ff22eeb
32 changed files with 174 additions and 116 deletions

View File

@@ -240,7 +240,7 @@ BOOL LLEditingMotion::onUpdate(F32 time, U8* joint_mask)
mIKSolver.solve();
// use blending...
F32 slerp_amt = LLCriticalDamp::getInterpolant(TARGET_LAG_HALF_LIFE);
F32 slerp_amt = LLSmoothInterpolation::getInterpolant(TARGET_LAG_HALF_LIFE);
shoulderRot = slerp(slerp_amt, mShoulderJoint.getRotation(), shoulderRot);
elbowRot = slerp(slerp_amt, mElbowJoint.getRotation(), elbowRot);

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@@ -181,8 +181,8 @@ BOOL LLHeadRotMotion::onUpdate(F32 time, U8* joint_mask)
LLQuaternion currentRootRotWorld = mRootJoint->getWorldRotation();
LLQuaternion currentInvRootRotWorld = ~currentRootRotWorld;
F32 head_slerp_amt = LLCriticalDamp::getInterpolant(HEAD_LOOKAT_LAG_HALF_LIFE);
F32 torso_slerp_amt = LLCriticalDamp::getInterpolant(TORSO_LOOKAT_LAG_HALF_LIFE);
F32 head_slerp_amt = LLSmoothInterpolation::getInterpolant(HEAD_LOOKAT_LAG_HALF_LIFE);
F32 torso_slerp_amt = LLSmoothInterpolation::getInterpolant(TORSO_LOOKAT_LAG_HALF_LIFE);
LLVector3* targetPos = (LLVector3*)mCharacter->getAnimationData("LookAtPoint");

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@@ -1101,11 +1101,11 @@ void LLKeyframeMotion::applyConstraint(JointConstraint* constraint, F32 time, U8
if (constraint->mSharedData->mChainLength != 0 &&
dist_vec_squared(root_pos, target_pos) * 0.95f > constraint->mTotalLength * constraint->mTotalLength)
{
constraint->mWeight = lerp(constraint->mWeight, 0.f, LLCriticalDamp::getInterpolant(0.1f));
constraint->mWeight = lerp(constraint->mWeight, 0.f, LLSmoothInterpolation::getInterpolant(0.1f));
}
else
{
constraint->mWeight = lerp(constraint->mWeight, 1.f, LLCriticalDamp::getInterpolant(0.3f));
constraint->mWeight = lerp(constraint->mWeight, 1.f, LLSmoothInterpolation::getInterpolant(0.3f));
}
F32 weight = constraint->mWeight * ((shared_data->mEaseOutStopTime == 0.f) ? 1.f :
@@ -1152,9 +1152,9 @@ void LLKeyframeMotion::applyConstraint(JointConstraint* constraint, F32 time, U8
// convert intermediate joint positions to world coordinates
positions[joint_num] = ( constraint->mPositions[joint_num] * mPelvisp->getWorldRotation()) + mPelvisp->getWorldPosition();
F32 time_constant = 1.f / clamp_rescale(constraint->mFixupDistanceRMS, 0.f, 0.5f, 0.2f, 8.f);
// LL_INFOS() << "Interpolant " << LLCriticalDamp::getInterpolant(time_constant, FALSE) << " and fixup distance " << constraint->mFixupDistanceRMS << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << LL_ENDL;
// LL_INFOS() << "Interpolant " << LLSmoothInterpolation::getInterpolant(time_constant, FALSE) << " and fixup distance " << constraint->mFixupDistanceRMS << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << LL_ENDL;
positions[joint_num] = lerp(positions[joint_num], kinematic_position,
LLCriticalDamp::getInterpolant(time_constant, FALSE));
LLSmoothInterpolation::getInterpolant(time_constant, FALSE));
}
S32 iteration_count;

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@@ -258,7 +258,7 @@ BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
// but this will cause the animation playback rate calculation below to
// kick in too slowly and sometimes start playing the animation in reverse.
//mPelvisOffset -= PELVIS_COMPENSATION_WIEGHT * (foot_slip_vector * world_to_avatar_rot);//lerp(LLVector3::zero, -1.f * (foot_slip_vector * world_to_avatar_rot), LLCriticalDamp::getInterpolant(0.1f));
//mPelvisOffset -= PELVIS_COMPENSATION_WIEGHT * (foot_slip_vector * world_to_avatar_rot);//lerp(LLVector3::zero, -1.f * (foot_slip_vector * world_to_avatar_rot), LLSmoothInterpolation::getInterpolant(0.1f));
////F32 drift_comp_max = DRIFT_COMP_MAX_TOTAL * (llclamp(speed, 0.f, DRIFT_COMP_MAX_SPEED) / DRIFT_COMP_MAX_SPEED);
//F32 drift_comp_max = DRIFT_COMP_MAX_TOTAL;
@@ -287,7 +287,7 @@ BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
F32 desired_speed_multiplier = llclamp(speed / foot_speed, min_speed_multiplier, ANIM_SPEED_MAX);
// blend towards new speed adjustment value
F32 new_speed_adjust = lerp(mAdjustedSpeed, desired_speed_multiplier, LLCriticalDamp::getInterpolant(SPEED_ADJUST_TIME_CONSTANT));
F32 new_speed_adjust = lerp(mAdjustedSpeed, desired_speed_multiplier, LLSmoothInterpolation::getInterpolant(SPEED_ADJUST_TIME_CONSTANT));
// limit that rate at which the speed adjustment changes
F32 speedDelta = llclamp(new_speed_adjust - mAdjustedSpeed, -SPEED_ADJUST_MAX_SEC * delta_time, SPEED_ADJUST_MAX_SEC * delta_time);
@@ -305,8 +305,8 @@ BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
{ // standing/turning
// damp out speed adjustment to 0
mAnimSpeed = lerp(mAnimSpeed, 1.f, LLCriticalDamp::getInterpolant(0.2f));
//mPelvisOffset = lerp(mPelvisOffset, LLVector3::zero, LLCriticalDamp::getInterpolant(0.2f));
mAnimSpeed = lerp(mAnimSpeed, 1.f, LLSmoothInterpolation::getInterpolant(0.2f));
//mPelvisOffset = lerp(mPelvisOffset, LLVector3::zero, LLSmoothInterpolation::getInterpolant(0.2f));
}
// broadcast walk speed change
@@ -384,7 +384,7 @@ BOOL LLFlyAdjustMotion::onUpdate(F32 time, U8* joint_mask)
F32 target_roll = llclamp(ang_vel.mV[VZ], -4.f, 4.f) * roll_factor;
// roll is critically damped interpolation between current roll and angular velocity-derived target roll
mRoll = lerp(mRoll, target_roll, LLCriticalDamp::getInterpolant(0.1f));
mRoll = lerp(mRoll, target_roll, LLSmoothInterpolation::getInterpolant(0.1f));
LLQuaternion roll(mRoll, LLVector3(0.f, 0.f, 1.f));
mPelvisState->setRotation(roll);

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@@ -199,7 +199,7 @@ void LLMotion::fadeOut()
{
if (mFadeWeight > 0.01f)
{
mFadeWeight = lerp(mFadeWeight, 0.f, LLCriticalDamp::getInterpolant(0.15f));
mFadeWeight = lerp(mFadeWeight, 0.f, LLSmoothInterpolation::getInterpolant(0.15f));
}
else
{
@@ -214,7 +214,7 @@ void LLMotion::fadeIn()
{
if (mFadeWeight < 0.99f)
{
mFadeWeight = lerp(mFadeWeight, 1.f, LLCriticalDamp::getInterpolant(0.15f));
mFadeWeight = lerp(mFadeWeight, 1.f, LLSmoothInterpolation::getInterpolant(0.15f));
}
else
{

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@@ -104,7 +104,7 @@ LLMotion::LLMotionInitStatus LLTargetingMotion::onInitialize(LLCharacter *charac
//-----------------------------------------------------------------------------
BOOL LLTargetingMotion::onUpdate(F32 time, U8* joint_mask)
{
F32 slerp_amt = LLCriticalDamp::getInterpolant(TORSO_TARGET_HALF_LIFE);
F32 slerp_amt = LLSmoothInterpolation::getInterpolant(TORSO_TARGET_HALF_LIFE);
LLVector3 target;
LLVector3* lookAtPoint = (LLVector3*)mCharacter->getAnimationData("LookAtPoint");

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@@ -33,63 +33,105 @@
#include "linden_common.h"
#include "llcriticaldamp.h"
#include <algorithm>
//-----------------------------------------------------------------------------
// static members
//-----------------------------------------------------------------------------
LLFrameTimer LLCriticalDamp::sInternalTimer;
std::map<F32, F32> LLCriticalDamp::sInterpolants;
F32 LLCriticalDamp::sTimeDelta;
LLFrameTimer LLSmoothInterpolation::sInternalTimer;
std::vector<LLSmoothInterpolation::Interpolant> LLSmoothInterpolation::sInterpolants;
F32 LLSmoothInterpolation::sTimeDelta;
std::pair<F32, F32> sCachedEntry;
// helper functors
struct LLSmoothInterpolation::CompareTimeConstants
{
bool operator()(const F32& a, const LLSmoothInterpolation::Interpolant& b) const
{
return a < b.mTimeScale;
}
bool operator()(const LLSmoothInterpolation::Interpolant& a, const F32& b) const
{
return a.mTimeScale < b; // bottom of a is higher than bottom of b
}
bool operator()(const LLSmoothInterpolation::Interpolant& a, const LLSmoothInterpolation::Interpolant& b) const
{
return a.mTimeScale < b.mTimeScale; // bottom of a is higher than bottom of b
}
};
//-----------------------------------------------------------------------------
// LLCriticalDamp()
// LLSmoothInterpolation()
//-----------------------------------------------------------------------------
LLCriticalDamp::LLCriticalDamp()
LLSmoothInterpolation::LLSmoothInterpolation()
{
sTimeDelta = 0.f;
sCachedEntry = std::pair<F32, F32>(-1.f, -1.f);
}
// static
//-----------------------------------------------------------------------------
// updateInterpolants()
//-----------------------------------------------------------------------------
void LLCriticalDamp::updateInterpolants()
void LLSmoothInterpolation::updateInterpolants()
{
sTimeDelta = sInternalTimer.getElapsedTimeAndResetF32();
F32 time_constant;
for (std::map<F32, F32>::iterator iter = sInterpolants.begin();
iter != sInterpolants.end(); iter++)
for (size_t i = 0; i < sInterpolants.size(); i++)
{
time_constant = iter->first;
F32 new_interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant);
new_interpolant = llclamp(new_interpolant, 0.f, 1.f);
sInterpolants[time_constant] = new_interpolant;
Interpolant& interp = sInterpolants[i];
interp.mInterpolant = calcInterpolant(interp.mTimeScale);
if (sCachedEntry.first == interp.mTimeScale)
{
sCachedEntry.second = interp.mInterpolant;
}
}
}
//-----------------------------------------------------------------------------
// getInterpolant()
//-----------------------------------------------------------------------------
F32 LLCriticalDamp::getInterpolant(const F32 time_constant, BOOL use_cache)
F32 LLSmoothInterpolation::getInterpolant(F32SecondsImplicit time_constant, bool use_cache)
{
if (time_constant == 0.f)
{
return 1.f;
}
if (use_cache && sInterpolants.count(time_constant))
{
return sInterpolants[time_constant];
}
F32 interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant);
interpolant = llclamp(interpolant, 0.f, 1.f);
if (use_cache)
{
sInterpolants[time_constant] = interpolant;
if (sCachedEntry.first == time_constant)
{
return sCachedEntry.second;
}
interpolant_vec_t::iterator find_it = std::lower_bound(sInterpolants.begin(), sInterpolants.end(), time_constant.value(), CompareTimeConstants());
if (find_it != sInterpolants.end() && find_it->mTimeScale == time_constant)
{
sCachedEntry = std::make_pair(time_constant.value(), find_it->mInterpolant);
return find_it->mInterpolant;
}
else
{
Interpolant interp;
interp.mTimeScale = time_constant.value();
interp.mInterpolant = calcInterpolant(time_constant.value());
sInterpolants.insert(find_it, interp);
sCachedEntry = std::make_pair(time_constant.value(), interp.mInterpolant);
return interp.mInterpolant;
}
}
else
{
return calcInterpolant(time_constant.value());
}
return interpolant;
}
//-----------------------------------------------------------------------------
// calcInterpolant()
//-----------------------------------------------------------------------------
F32 LLSmoothInterpolation::calcInterpolant(F32 time_constant)
{
return llclamp(1.f - powf(2.f, -sTimeDelta / time_constant), 0.f, 1.f);
}

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@@ -34,26 +34,46 @@
#ifndef LL_LLCRITICALDAMP_H
#define LL_LLCRITICALDAMP_H
#include <map>
#include <vector>
#include "llframetimer.h"
#include "llunits.h"
class LL_COMMON_API LLCriticalDamp
class LL_COMMON_API LLSmoothInterpolation
{
public:
LLCriticalDamp();
LLSmoothInterpolation();
// MANIPULATORS
static void updateInterpolants();
// ACCESSORS
static F32 getInterpolant(const F32 time_constant, BOOL use_cache = TRUE);
static F32 getInterpolant(F32SecondsImplicit time_constant, bool use_cache = true);
protected:
template<typename T>
static T lerp(T a, T b, F32SecondsImplicit time_constant, bool use_cache = true)
{
F32 interpolant = getInterpolant(time_constant, use_cache);
return ((a * (1.f - interpolant))
+ (b * interpolant));
}
protected:
static F32 calcInterpolant(F32 time_constant);
struct CompareTimeConstants;
static LLFrameTimer sInternalTimer; // frame timer for calculating deltas
static std::map<F32, F32> sInterpolants;
struct Interpolant
{
F32 mTimeScale;
F32 mInterpolant;
};
typedef std::vector<Interpolant> interpolant_vec_t;
static interpolant_vec_t sInterpolants;
static F32 sTimeDelta;
};
typedef LLSmoothInterpolation LLCriticalDamp;
#endif // LL_LLCRITICALDAMP_H

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@@ -2135,12 +2135,8 @@ void LLRender::end()
}
}
extern bool countFlushes;
extern unsigned int flushCount;
void LLRender::flush()
{
if (countFlushes) ++flushCount;
if (mCount > 0)
{
#if 0

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@@ -704,11 +704,11 @@ void LLButton::draw()
mCurGlowStrength = lerp(mCurGlowStrength,
mFlashing ? (flash? 1.0 : 0.0)
: mHoverGlowStrength,
LLCriticalDamp::getInterpolant(0.05f));
LLSmoothInterpolation::getInterpolant(0.05f));
}
else
{
mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLCriticalDamp::getInterpolant(0.05f));
mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLSmoothInterpolation::getInterpolant(0.05f));
}
// Draw button image, if available.

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@@ -621,7 +621,7 @@ bool LLLayoutStack::animatePanels()
{
if (!mAnimatedThisFrame)
{
panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 1.f, LLCriticalDamp::getInterpolant(mOpenTimeConstant));
panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 1.f, LLSmoothInterpolation::getInterpolant(mOpenTimeConstant));
if (panelp->mVisibleAmt > 0.99f)
{
panelp->mVisibleAmt = 1.f;
@@ -646,7 +646,7 @@ bool LLLayoutStack::animatePanels()
{
if (!mAnimatedThisFrame)
{
panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 0.f, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
panelp->mVisibleAmt = lerp(panelp->mVisibleAmt, 0.f, LLSmoothInterpolation::getInterpolant(mCloseTimeConstant));
if (panelp->mVisibleAmt < 0.001f)
{
panelp->mVisibleAmt = 0.f;
@@ -673,7 +673,7 @@ bool LLLayoutStack::animatePanels()
{
if (!mAnimatedThisFrame)
{
panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLSmoothInterpolation::getInterpolant(mCloseTimeConstant));
}
if (llabs(panelp->mCollapseAmt - collapse_state) < 0.001f)

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@@ -4509,7 +4509,7 @@ void LLTearOffMenu::draw()
if (getRect().getHeight() != mTargetHeight)
{
// animate towards target height
reshape(getRect().getWidth(), llceil(lerp((F32)getRect().getHeight(), mTargetHeight, LLCriticalDamp::getInterpolant(0.05f))));
reshape(getRect().getWidth(), llceil(lerp((F32)getRect().getHeight(), mTargetHeight, LLSmoothInterpolation::getInterpolant(0.05f))));
}
LLFloater::draw();
}

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@@ -502,11 +502,11 @@ void LLScrollbar::draw()
BOOL hovered = getEnabled() && !other_captor && (hasMouseCapture() || mThumbRect.pointInRect(local_mouse_x, local_mouse_y));
if (hovered)
{
mCurGlowStrength = lerp(mCurGlowStrength, mHoverGlowStrength, LLCriticalDamp::getInterpolant(0.05f));
mCurGlowStrength = lerp(mCurGlowStrength, mHoverGlowStrength, LLSmoothInterpolation::getInterpolant(0.05f));
}
else
{
mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLCriticalDamp::getInterpolant(0.05f));
mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLSmoothInterpolation::getInterpolant(0.05f));
}

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@@ -215,7 +215,7 @@ void LLTabContainer::draw()
}
}
setScrollPosPixels(mIsVertical ? target_pixel_scroll : lerp((F32)getScrollPosPixels(), (F32)target_pixel_scroll, LLCriticalDamp::getInterpolant(0.08f)));
setScrollPosPixels(mIsVertical ? target_pixel_scroll : lerp((F32)getScrollPosPixels(), (F32)target_pixel_scroll, LLSmoothInterpolation::getInterpolant(0.08f)));
BOOL has_scroll_arrows = !getTabsHidden() && ((mMaxScrollPos > 0) || (mScrollPosPixels > 0));
if (!mIsVertical)

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@@ -352,7 +352,7 @@ void LLAgentCamera::resetView(BOOL reset_camera, BOOL change_camera)
LLVector3 agent_at_axis = gAgent.getAtAxis();
agent_at_axis -= projected_vec(agent_at_axis, gAgent.getReferenceUpVector());
agent_at_axis.normalize();
gAgent.resetAxes(lerp(gAgent.getAtAxis(), agent_at_axis, LLCriticalDamp::getInterpolant(0.3f)));
gAgent.resetAxes(lerp(gAgent.getAtAxis(), agent_at_axis, LLSmoothInterpolation::getInterpolant(0.3f)));
}
setFocusOnAvatar(TRUE, ANIMATE);
@@ -1299,7 +1299,7 @@ void LLAgentCamera::updateCamera()
gAgentCamera.clearPanKeys();
// lerp camera focus offset
mCameraFocusOffset = lerp(mCameraFocusOffset, mCameraFocusOffsetTarget, LLCriticalDamp::getInterpolant(CAMERA_FOCUS_HALF_LIFE));
mCameraFocusOffset = lerp(mCameraFocusOffset, mCameraFocusOffsetTarget, LLSmoothInterpolation::getInterpolant(CAMERA_FOCUS_HALF_LIFE));
if ( mCameraMode == CAMERA_MODE_FOLLOW )
{
@@ -1418,7 +1418,7 @@ void LLAgentCamera::updateCamera()
const F32 SMOOTHING_HALF_LIFE = 0.02f;
static const LLCachedControl<F32> camera_position_smoothing("CameraPositionSmoothing");
F32 smoothing = LLCriticalDamp::getInterpolant(camera_position_smoothing * SMOOTHING_HALF_LIFE, FALSE);
F32 smoothing = LLSmoothInterpolation::getInterpolant(camera_position_smoothing * SMOOTHING_HALF_LIFE, FALSE);
if (!mFocusObject) // we differentiate on avatar mode
{
@@ -1448,7 +1448,7 @@ void LLAgentCamera::updateCamera()
}
mCameraCurrentFOVZoomFactor = lerp(mCameraCurrentFOVZoomFactor, mCameraFOVZoomFactor, LLCriticalDamp::getInterpolant(FOV_ZOOM_HALF_LIFE));
mCameraCurrentFOVZoomFactor = lerp(mCameraCurrentFOVZoomFactor, mCameraFOVZoomFactor, LLSmoothInterpolation::getInterpolant(FOV_ZOOM_HALF_LIFE));
// LL_INFOS() << "Current FOV Zoom: " << mCameraCurrentFOVZoomFactor << " Target FOV Zoom: " << mCameraFOVZoomFactor << " Object penetration: " << mFocusObjectDist << LL_ENDL;
@@ -1615,7 +1615,7 @@ F32 LLAgentCamera::calcCustomizeAvatarUIOffset( const LLVector3d& camera_pos_glo
}
}
F32 range = (F32)dist_vec(camera_pos_global, gAgentCamera.getFocusGlobal());
mUIOffset = lerp(mUIOffset, ui_offset, LLCriticalDamp::getInterpolant(0.05f));
mUIOffset = lerp(mUIOffset, ui_offset, LLSmoothInterpolation::getInterpolant(0.05f));
return mUIOffset * range;
}
@@ -1924,7 +1924,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
if (mTargetCameraDistance != mCurrentCameraDistance)
{
F32 camera_lerp_amt = LLCriticalDamp::getInterpolant(CAMERA_ZOOM_HALF_LIFE);
F32 camera_lerp_amt = LLSmoothInterpolation::getInterpolant(CAMERA_ZOOM_HALF_LIFE);
mCurrentCameraDistance = lerp(mCurrentCameraDistance, mTargetCameraDistance, camera_lerp_amt);
}
@@ -1941,7 +1941,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
if (isAgentAvatarValid())
{
LLVector3d camera_lag_d;
F32 lag_interp = LLCriticalDamp::getInterpolant(CAMERA_LAG_HALF_LIFE);
F32 lag_interp = LLSmoothInterpolation::getInterpolant(CAMERA_LAG_HALF_LIFE);
LLVector3 target_lag;
LLVector3 vel = gAgent.getVelocity();
@@ -1987,7 +1987,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
}
else
{
mCameraLag = lerp(mCameraLag, LLVector3::zero, LLCriticalDamp::getInterpolant(0.15f));
mCameraLag = lerp(mCameraLag, LLVector3::zero, LLSmoothInterpolation::getInterpolant(0.15f));
}
camera_lag_d.setVec(mCameraLag);

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@@ -3775,8 +3775,8 @@ void LLAppViewer::idle()
LLEventTimer::updateClass();
}
{
LAZY_FT("LLCriticalDamp::updateInterpolants");
LLCriticalDamp::updateInterpolants();
LAZY_FT("LLSmoothInterpolation::updateInterpolants");
LLSmoothInterpolation::updateInterpolants();
}
{
LAZY_FT("LLMortician::updateClass");

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@@ -581,7 +581,7 @@ F32 LLDrawable::updateXform(BOOL undamped)
if (damped && isVisible())
{
F32 lerp_amt = llclamp(LLCriticalDamp::getInterpolant(OBJECT_DAMPING_TIME_CONSTANT), 0.f, 1.f);
F32 lerp_amt = llclamp(LLSmoothInterpolation::getInterpolant(OBJECT_DAMPING_TIME_CONSTANT), 0.f, 1.f);
LLVector3 new_pos = lerp(old_pos, target_pos, lerp_amt);
dist_squared = dist_vec_squared(new_pos, target_pos);

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@@ -1026,7 +1026,7 @@ void LLFastTimerView::draw()
}
//interpolate towards new maximum
last_max = (U64) lerp((F32)last_max, (F32) cur_max, LLCriticalDamp::getInterpolant(0.1f));
last_max = (U64) lerp((F32)last_max, (F32) cur_max, LLSmoothInterpolation::getInterpolant(0.1f));
if (last_max - cur_max <= 1 || cur_max - last_max <= 1)
{
last_max = cur_max;
@@ -1034,7 +1034,7 @@ void LLFastTimerView::draw()
F32 alpha_target = last_max > cur_max ?
llmin((F32) last_max/ (F32) cur_max - 1.f,1.f) :
llmin((F32) cur_max/ (F32) last_max - 1.f,1.f);
alpha_interp = lerp(alpha_interp, alpha_target, LLCriticalDamp::getInterpolant(0.1f));
alpha_interp = lerp(alpha_interp, alpha_target, LLSmoothInterpolation::getInterpolant(0.1f));
if (mHoverID != NULL)
{

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@@ -425,11 +425,11 @@ void LLFloaterAvatarPicker::drawFrustum()
if (gFocusMgr.childHasMouseCapture(getDragHandle()))
{
mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLCriticalDamp::getInterpolant(mContextConeFadeTime));
mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLSmoothInterpolation::getInterpolant(mContextConeFadeTime));
}
else
{
mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLCriticalDamp::getInterpolant(mContextConeFadeTime));
mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLSmoothInterpolation::getInterpolant(mContextConeFadeTime));
}
}
}

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@@ -532,11 +532,11 @@ void LLFloaterColorPicker::draw()
if (gFocusMgr.childHasMouseCapture(getDragHandle()))
{
mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
}
else
{
mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
}
mPipetteBtn->setToggleState(LLToolMgr::getInstance()->getCurrentTool() == LLToolPipette::getInstance());

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@@ -607,7 +607,7 @@ void LLSnapshotLivePreview::draw()
{
if (mFlashAlpha < 1.f)
{
mFlashAlpha = lerp(mFlashAlpha, 1.f, LLCriticalDamp::getInterpolant(0.02f));
mFlashAlpha = lerp(mFlashAlpha, 1.f, LLSmoothInterpolation::getInterpolant(0.02f));
}
else
{
@@ -616,7 +616,7 @@ void LLSnapshotLivePreview::draw()
}
else
{
mFlashAlpha = lerp(mFlashAlpha, 0.f, LLCriticalDamp::getInterpolant(0.15f));
mFlashAlpha = lerp(mFlashAlpha, 0.f, LLSmoothInterpolation::getInterpolant(0.15f));
}
if (mShineCountdown > 0)

View File

@@ -1280,7 +1280,7 @@ S32 LLFolderViewFolder::arrange( S32* width, S32* height, S32 filter_generation)
// animate current height towards target height
if (llabs(mCurHeight - mTargetHeight) > 1.f)
{
mCurHeight = lerp(mCurHeight, mTargetHeight, LLCriticalDamp::getInterpolant(mIsOpen ? FOLDER_OPEN_TIME_CONSTANT : FOLDER_CLOSE_TIME_CONSTANT));
mCurHeight = lerp(mCurHeight, mTargetHeight, LLSmoothInterpolation::getInterpolant(mIsOpen ? FOLDER_OPEN_TIME_CONSTANT : FOLDER_CLOSE_TIME_CONSTANT));
requestArrange();
@@ -2521,11 +2521,11 @@ void LLFolderViewFolder::draw()
}
else if (mIsOpen)
{
mControlLabelRotation = lerp(mControlLabelRotation, -90.f, LLCriticalDamp::getInterpolant(0.04f));
mControlLabelRotation = lerp(mControlLabelRotation, -90.f, LLSmoothInterpolation::getInterpolant(0.04f));
}
else
{
mControlLabelRotation = lerp(mControlLabelRotation, 0.f, LLCriticalDamp::getInterpolant(0.025f));
mControlLabelRotation = lerp(mControlLabelRotation, 0.f, LLSmoothInterpolation::getInterpolant(0.025f));
}
bool possibly_has_children = false;

View File

@@ -334,11 +334,11 @@ void LLFollowCam::update()
F32 force = focusOffsetDistance - focusThresholdNormalizedByDistance;
*/
F32 focusLagLerp = LLCriticalDamp::getInterpolant( mFocusLag );
F32 focusLagLerp = LLSmoothInterpolation::getInterpolant( mFocusLag );
focus_pt_agent = lerp( focus_pt_agent, whereFocusWantsToBe, focusLagLerp );
mSimulatedFocusGlobal = gAgent.getPosGlobalFromAgent(focus_pt_agent);
}
mRelativeFocus = lerp(mRelativeFocus, (focus_pt_agent - mSubjectPosition) * ~mSubjectRotation, LLCriticalDamp::getInterpolant(0.05f));
mRelativeFocus = lerp(mRelativeFocus, (focus_pt_agent - mSubjectPosition) * ~mSubjectRotation, LLSmoothInterpolation::getInterpolant(0.05f));
}// if focus is not locked ---------------------------------------------
@@ -421,7 +421,7 @@ void LLFollowCam::update()
//-------------------------------------------------------------------------------------------------
if ( distanceFromPositionToIdealPosition > mPositionThreshold )
{
F32 positionPullLerp = LLCriticalDamp::getInterpolant( mPositionLag );
F32 positionPullLerp = LLSmoothInterpolation::getInterpolant( mPositionLag );
simulated_pos_agent = lerp( simulated_pos_agent, whereCameraPositionWantsToBe, positionPullLerp );
}
@@ -441,7 +441,7 @@ void LLFollowCam::update()
updateBehindnessConstraint(gAgent.getPosAgentFromGlobal(mSimulatedFocusGlobal), simulated_pos_agent);
mSimulatedPositionGlobal = gAgent.getPosGlobalFromAgent(simulated_pos_agent);
mRelativePos = lerp(mRelativePos, (simulated_pos_agent - mSubjectPosition) * ~mSubjectRotation, LLCriticalDamp::getInterpolant(0.05f));
mRelativePos = lerp(mRelativePos, (simulated_pos_agent - mSubjectPosition) * ~mSubjectRotation, LLSmoothInterpolation::getInterpolant(0.05f));
} // if position is not locked -----------------------------------------------------------
@@ -496,7 +496,7 @@ BOOL LLFollowCam::updateBehindnessConstraint(LLVector3 focus, LLVector3& cam_pos
if ( cameraOffsetAngle > mBehindnessMaxAngle )
{
F32 fraction = ((cameraOffsetAngle - mBehindnessMaxAngle) / cameraOffsetAngle) * LLCriticalDamp::getInterpolant(mBehindnessLag);
F32 fraction = ((cameraOffsetAngle - mBehindnessMaxAngle) / cameraOffsetAngle) * LLSmoothInterpolation::getInterpolant(mBehindnessLag);
cam_position = focus + horizontalSubjectBack * (slerp(fraction, camera_offset_rotation, LLQuaternion::DEFAULT));
cam_position.mV[VZ] = cameraZ; // clamp z value back to what it was before we started messing with it
constraint_active = TRUE;

View File

@@ -965,7 +965,7 @@ void LLHUDNameTag::updateAll()
// {
// continue;
// }
(*this_object_it)->mPositionOffset = lerp((*this_object_it)->mPositionOffset, (*this_object_it)->mTargetPositionOffset, LLCriticalDamp::getInterpolant(POSITION_DAMPING_TC));
(*this_object_it)->mPositionOffset = lerp((*this_object_it)->mPositionOffset, (*this_object_it)->mTargetPositionOffset, LLSmoothInterpolation::getInterpolant(POSITION_DAMPING_TC));
}
}

View File

@@ -242,7 +242,7 @@ void LLManipRotate::render()
if (mManipPart == LL_ROT_Z)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
gGL.pushMatrix();
{
// selected part
@@ -253,7 +253,7 @@ void LLManipRotate::render()
}
else if (mManipPart == LL_ROT_Y)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
gGL.pushMatrix();
{
static const LLMatrix4a rot = gGL.genRot( 90.f, 1.f, 0.f, 0.f );
@@ -265,7 +265,7 @@ void LLManipRotate::render()
}
else if (mManipPart == LL_ROT_X)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
gGL.pushMatrix();
{
static const LLMatrix4a rot = gGL.genRot( 90.f, 0.f, 1.f, 0.f );
@@ -277,13 +277,13 @@ void LLManipRotate::render()
}
else if (mManipPart == LL_ROT_ROLL)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
}
else if (mManipPart == LL_NO_PART)
{
if (mHighlightedPart == LL_NO_PART)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
}
LLGLEnable cull_face(GL_CULL_FACE);
@@ -298,7 +298,7 @@ void LLManipRotate::render()
{
if (mHighlightedPart == LL_ROT_Z)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, SELECTED_MANIPULATOR_SCALE, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
gGL.scalef(mManipulatorScales.mV[VZ], mManipulatorScales.mV[VZ], mManipulatorScales.mV[VZ]);
// hovering over part
gl_ring( mRadiusMeters, width_meters, LLColor4( 0.f, 0.f, 1.f, 1.f ), LLColor4( 0.f, 0.f, 1.f, 0.5f ), CIRCLE_STEPS, i);
@@ -317,7 +317,7 @@ void LLManipRotate::render()
gGL.rotatef( rot );
if (mHighlightedPart == LL_ROT_Y)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, SELECTED_MANIPULATOR_SCALE, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
gGL.scalef(mManipulatorScales.mV[VY], mManipulatorScales.mV[VY], mManipulatorScales.mV[VY]);
// hovering over part
gl_ring( mRadiusMeters, width_meters, LLColor4( 0.f, 1.f, 0.f, 1.f ), LLColor4( 0.f, 1.f, 0.f, 0.5f ), CIRCLE_STEPS, i);
@@ -336,7 +336,7 @@ void LLManipRotate::render()
gGL.rotatef( rot );
if (mHighlightedPart == LL_ROT_X)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(SELECTED_MANIPULATOR_SCALE, 1.f, 1.f, 1.f), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
gGL.scalef(mManipulatorScales.mV[VX], mManipulatorScales.mV[VX], mManipulatorScales.mV[VX]);
// hovering over part
@@ -352,7 +352,7 @@ void LLManipRotate::render()
if (mHighlightedPart == LL_ROT_ROLL)
{
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales = lerp(mManipulatorScales, LLVector4(1.f, 1.f, 1.f, SELECTED_MANIPULATOR_SCALE), LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
}
}

View File

@@ -543,11 +543,11 @@ void LLManipScale::highlightManipulators(S32 x, S32 y)
{
if (mHighlightedPart == MANIPULATOR_IDS[i])
{
mManipulatorScales[i] = lerp(mManipulatorScales[i], SELECTED_MANIPULATOR_SCALE, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales[i] = lerp(mManipulatorScales[i], SELECTED_MANIPULATOR_SCALE, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
}
else
{
mManipulatorScales[i] = lerp(mManipulatorScales[i], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
mManipulatorScales[i] = lerp(mManipulatorScales[i], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE));
}
}

View File

@@ -1925,18 +1925,18 @@ void LLManipTranslate::renderTranslationHandles()
{
if (index == mManipPart - LL_X_ARROW || index == mHighlightedPart - LL_X_ARROW)
{
mArrowScales.mV[index] = lerp(mArrowScales.mV[index], SELECTED_ARROW_SCALE, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mArrowScales.mV[index] = lerp(mArrowScales.mV[index], SELECTED_ARROW_SCALE, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
}
else if (index == mManipPart - LL_YZ_PLANE || index == mHighlightedPart - LL_YZ_PLANE)
{
mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], SELECTED_ARROW_SCALE, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], SELECTED_ARROW_SCALE, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
}
else
{
mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLCriticalDamp::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mArrowScales.mV[index] = lerp(mArrowScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
mPlaneScales.mV[index] = lerp(mPlaneScales.mV[index], 1.f, LLSmoothInterpolation::getInterpolant(MANIPULATOR_SCALE_HALF_LIFE ));
}
}

View File

@@ -262,7 +262,7 @@ void LLNetMap::draw()
static LLUICachedControl<S32> center("MiniMapCenter");
if (center != MAP_CENTER_NONE)
{
mCurPan = lerp(mCurPan, mTargetPan, LLCriticalDamp::getInterpolant(0.1f));
mCurPan = lerp(mCurPan, mTargetPan, LLSmoothInterpolation::getInterpolant(0.1f));
}
// Prepare a scissor region

View File

@@ -602,11 +602,11 @@ void LLFloaterTexturePicker::draw()
if (gFocusMgr.childHasMouseCapture(getDragHandle()))
{
mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
mContextConeOpacity = lerp(mContextConeOpacity, gSavedSettings.getF32("PickerContextOpacity"), LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
}
else
{
mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLCriticalDamp::getInterpolant(CONTEXT_FADE_TIME));
mContextConeOpacity = lerp(mContextConeOpacity, 0.f, LLSmoothInterpolation::getInterpolant(CONTEXT_FADE_TIME));
}
updateImageStats();

View File

@@ -1152,7 +1152,7 @@ void render_hud_attachments()
gAgentCamera.mHUDTargetZoom = llclamp(gAgentCamera.mHUDTargetZoom, (!gRlvAttachmentLocks.hasLockedHUD()) ? 0.1f : 0.85f, 1.f);
// [/RLVa:KB]
// smoothly interpolate current zoom level
gAgentCamera.mHUDCurZoom = lerp(gAgentCamera.mHUDCurZoom, gAgentCamera.mHUDTargetZoom, LLCriticalDamp::getInterpolant(0.03f));
gAgentCamera.mHUDCurZoom = lerp(gAgentCamera.mHUDCurZoom, gAgentCamera.mHUDTargetZoom, LLSmoothInterpolation::getInterpolant(0.03f));
if (LLPipeline::sShowHUDAttachments && !gDisconnected && setup_hud_matrices())
{

View File

@@ -3298,7 +3298,7 @@ void LLVOAvatar::idleUpdateWindEffect()
LLVector3 velocity = getVelocity();
F32 speed = velocity.length();
//RN: velocity varies too much frame to frame for this to work
mRippleAccel.clearVec();//lerp(mRippleAccel, (velocity - mLastVel) * time_delta, LLCriticalDamp::getInterpolant(0.02f));
mRippleAccel.clearVec();//lerp(mRippleAccel, (velocity - mLastVel) * time_delta, LLSmoothInterpolation::getInterpolant(0.02f));
mLastVel = velocity;
LLVector4 wind;
wind.setVec(getRegion()->mWind.getVelocityNoisy(getPositionAgent(), 4.f) - velocity);
@@ -3321,11 +3321,11 @@ void LLVOAvatar::idleUpdateWindEffect()
F32 interp;
if (wind.mV[VW] > mWindVec.mV[VW])
{
interp = LLCriticalDamp::getInterpolant(0.2f);
interp = LLSmoothInterpolation::getInterpolant(0.2f);
}
else
{
interp = LLCriticalDamp::getInterpolant(0.4f);
interp = LLSmoothInterpolation::getInterpolant(0.4f);
}
mWindVec = lerp(mWindVec, wind, interp);
@@ -4018,7 +4018,7 @@ LLVector3 LLVOAvatar::idleUpdateNameTagPosition(const LLVector3& root_pos_last)
mTargetRootToHeadOffset = head_offset;
}
mCurRootToHeadOffset = lerp(mCurRootToHeadOffset, mTargetRootToHeadOffset, LLCriticalDamp::getInterpolant(0.2f));
mCurRootToHeadOffset = lerp(mCurRootToHeadOffset, mTargetRootToHeadOffset, LLSmoothInterpolation::getInterpolant(0.2f));
LLVector3 name_position = mRoot->getLastWorldPosition() + (mCurRootToHeadOffset * root_rot);
name_position += (local_camera_up * root_rot) - (projected_vec(local_camera_at * root_rot, camera_to_av));
@@ -4594,7 +4594,7 @@ BOOL LLVOAvatar::updateCharacter(LLAgent &agent)
// Set the root rotation, but do so incrementally so that it
// lags in time by some fixed amount.
//F32 u = LLCriticalDamp::getInterpolant(PELVIS_LAG);
//F32 u = LLSmoothInterpolation::getInterpolant(PELVIS_LAG);
F32 pelvis_lag_time = 0.f;
if (self_in_mouselook)
{

View File

@@ -337,8 +337,8 @@ void LLWorldMapView::draw()
mVisibleRegions.clear();
// animate pan if necessary
sPanX = lerp(sPanX, sTargetPanX, LLCriticalDamp::getInterpolant(0.1f));
sPanY = lerp(sPanY, sTargetPanY, LLCriticalDamp::getInterpolant(0.1f));
sPanX = lerp(sPanX, sTargetPanX, LLSmoothInterpolation::getInterpolant(0.1f));
sPanY = lerp(sPanY, sTargetPanY, LLSmoothInterpolation::getInterpolant(0.1f));
const S32 width = getRect().getWidth();
const S32 height = getRect().getHeight();
@@ -905,7 +905,7 @@ F32 LLWorldMapView::drawLegacySimTile(LLSimInfo& sim_info, S32 left, S32 top, S3
if (!sim_drawable || sim_fetching)
sim_info.setAlpha( 0.f );
else if (llabs(sim_info.getAlpha() - fade_target) > ALPHA_CUTOFF) //This gives us a nice fade when a visible sims texture finishes loading, or visiblity has changed.
sim_info.setAlpha(lerp(sim_info.getAlpha(), fade_target, LLCriticalDamp::getInterpolant(0.15f)));
sim_info.setAlpha(lerp(sim_info.getAlpha(), fade_target, LLSmoothInterpolation::getInterpolant(0.15f)));
F32 alpha = sim_info.getAlpha();
//call setKnownDrawSize if image is still loading, or its actually being drawn.