Add a "real-time preview" option to the warp tool, which, when
toggled, causes the preview to be rendered synchronously during
motion. This is slower, but gives better feedback.
(cherry picked from commit a93af839fe)
In the warp tool, when the warp is empty and the current behavior
has no effect as a result (i.e., when it's ERASE or SMOOTH), show
an error message in the status bar, and blink the behavior combo
widget in the tool options, to hint at the source of the error.
(cherry picked from commit 7958387d54)
In the warp tool, when no stroke events are selected, blink the
stroke frame widget in the tool options, in addition to showing an
error message in the status bar, to hint at the source of the
error.
(cherry picked from commit 17cc44a7be)
... to the warp tool
The interpolation and abyss policy options control the sampler type
and abyss policy of the map-relative node. The high quality preview
option determines whether to use the same sampler for map-relative
during preview as the one used during commit, or whether to use a
fast nearest-neighbor sampler.
A bit too much? Maybe :)
... and to disable/control the rate of the periodic stroke.
The warp tool is now fast enough to enable stroking directly in
the motion handler, which gives better-quality response to motion
than stroking periodically. It's not quite fast enough to enable
exact motion, though :/
Allow individually enabling/disabling stroking during motion and
periodically, and allow controlling the rate of the periodical
stroke.
The spacing parameter controls the stroke spacing of the warp op.
It's similar, but not identical, to the brush spacing parameter of
the paint tools. It provides a tradeoff between speed and quality.
Change the UI range of the hardness parameter from [0, 1] to [0, 100],
to match the other parameters.
and use it to compute influence with a gaussian like curve
implementation use a lookup table to speed things gimpwarpoptions: add
a hardness property and UI
