void
RotateScreen::preparePaint (int msSinceLastPaint)
{
float oldXrot = mXrot + mBaseXrot;
if (mGrabIndex || mMoving)
{
float amount = msSinceLastPaint * 0.05f * optionGetSpeed ();
int steps = amount / (0.5f * optionGetTimestep ());
if (!steps)
steps = 1;
float chunk = amount / (float) steps;
while (steps--)
{
mXrot += mXVelocity * chunk;
mYrot += mYVelocity * chunk;
if (mXrot > 360.0f / screen->vpSize ().width ())
{
mBaseXrot += 360.0f / screen->vpSize ().width ();
mXrot -= 360.0f / screen->vpSize ().width ();
}
else if (mXrot < 0.0f)
{
mBaseXrot -= 360.0f / screen->vpSize ().width ();
mXrot += 360.0f / screen->vpSize ().width ();
}
if (cubeScreen->invert () == -1)
{
if (mYrot > 45.0f)
{
mYVelocity = 0.0f;
mYrot = 45.0f;
}
else if (mYrot < -45.0f)
{
mYVelocity = 0.0f;
mYrot = -45.0f;
}
}
else
{
if (mYrot > 100.0f)
{
mYVelocity = 0.0f;
mYrot = 100.0f;
}
else if (mYrot < -100.0f)
{
mYVelocity = 0.0f;
mYrot = -100.0f;
}
}
if (mGrabbed)
{
mXVelocity /= 1.25f;
mYVelocity /= 1.25f;
if (fabs (mXVelocity) < 0.01f)
mXVelocity = 0.0f;
if (fabs (mYVelocity) < 0.01f)
mYVelocity = 0.0f;
}
else if (adjustVelocity (screen->vpSize ().width (), cubeScreen->invert ()))
{
mXVelocity = 0.0f;
mYVelocity = 0.0f;
if (fabs (mYrot) < 0.1f)
{
CompOption::Vector o (0);
int tx;
float xrot = mBaseXrot + mXrot;
if (xrot < 0.0f)
tx = (screen->vpSize ().width () * xrot / 360.0f) - 0.5f;
else
tx = (screen->vpSize ().width () * xrot / 360.0f) + 0.5f;
/* flag end of rotation */
cubeScreen->rotationState (CubeScreen::RotationNone);
screen->moveViewport (tx, 0, true);
mBaseXrot = mMoveTo = mXrot = mYrot = 0.0f;
mMoving = false;
if (mGrabIndex)
{
screen->removeGrab (mGrabIndex, &mSavedPointer);
mGrabIndex = 0;
}
if (mMoveWindow)
{
CompWindow *w = screen->findWindow (mMoveWindow);
if (w)
w->move (mMoveWindowX - w->x (), 0);
}
/* only focus default window if switcher isn't active */
else if (!screen->grabExist ("switcher"))
screen->focusDefaultWindow ();
mMoveWindow = 0;
screen->handleCompizEvent ("rotate", "end_viewport_switch", o);
}
break;
}
}
if (mMoveWindow)
{
CompWindow *w = screen->findWindow (mMoveWindow);
if (w)
{
float xrot = (screen->vpSize ().width () * (mBaseXrot + mXrot)) / 360.0f;
w->moveToViewportPosition (mMoveWindowX - xrot * screen->width (),
w->y (), false);
}
}
}
if (mMoving)
{
if (fabs (mXrot + mBaseXrot + mMoveTo) <= 180 / screen->vpSize ().width ())
mProgress = fabs (mXrot + mBaseXrot + mMoveTo) /
180 / screen->vpSize ().width ();
else if (fabs (mXrot + mBaseXrot) <= 180 / screen->vpSize ().width ())
mProgress = fabs (mXrot + mBaseXrot) /
180 / screen->vpSize ().width ();
else
{
mProgress += fabs (mXrot + mBaseXrot - oldXrot) /
180 / (screen->vpSize ().width ());
mProgress = MIN (mProgress, 1.0);
}
}
else if (mProgress != 0.0f || mGrabbed)
{
float amount = msSinceLastPaint * 0.05f * optionGetSpeed ();
int steps = amount / (0.5f * optionGetTimestep ());
if (!steps)
steps = 1;
float chunk = amount / (float) steps;
while (steps--)
{
float dt;
if (mGrabbed)
dt = 1.0 - mProgress;
else
dt = 0.0f - mProgress;
float adjust = dt * 0.15f;
float tamount = fabs (dt) * 1.5f;
if (tamount < 0.2f)
tamount = 0.2f;
else if (tamount > 2.0f)
tamount = 2.0f;
mProgressVelocity = (tamount * mProgressVelocity + adjust) /
(tamount + 1.0f);
mProgress += mProgressVelocity * chunk;
if (fabs (dt) < 0.01f && fabs (mProgressVelocity) < 0.0001f)
{
if (mGrabbed)
mProgress = 1.0f;
else
mProgress = 0.0f;
break;
}
}
}
if (cubeScreen->invert () == 1 && !cubeScreen->unfolded ())
mZoomTranslate = optionGetZoom () * mProgress;
else
mZoomTranslate = 0.0;
cScreen->preparePaint (msSinceLastPaint);
}
