Commit Graph

2074 Commits

Author SHA1 Message Date
Zoltan Gyarmati 5a0a2a8366 pcbnew: only update cursor instead of activating selection tool when quiting delete tool
Fixes: https://gitlab.com/kicad/code/kicad/issues/7531
2021-02-20 06:40:00 +00:00
Jeff Young c2f68ca4da Whittle down library tree context menus to be more contextual.
(From discussion on Zulip.)
2021-02-19 19:07:45 +00:00
Jeff Young 828cdacc6f Add some missing tooltips.
Fixes https://gitlab.com/kicad/code/kicad/issues/7582
2021-02-18 18:33:52 +00:00
PJM c001c26575 Pcbnew: Drag selections containing only tracks or vias
CHANGED: If the user made a selection and then tried dragging it, the
drag would only succeed if the selection contained at least one
footprint.  Selections with only tracks and vias would instead make
KiCad drag a new selection box.

This MR allows routing of selections of a single track or via, while moving
selections containing more than one item, whether or not they also contain
a footprint.

Fixes https://gitlab.com/kicad/code/kicad/issues/7539
2021-02-18 17:49:48 +00:00
Jon Evans b2cd97fd84 Don't rotate/flip footprint texts along with the footprint 2021-02-18 12:39:28 -05:00
Seth Hillbrand 25e78162c8 Cleanup icons
- Adjust group/ungroup
- Use Mirror triangles for rotate
- Smooth goto badge
2021-02-17 17:26:16 -08:00
jean-pierre charras 5d2dc0b50e Fix a few (minor) issues:
- Make DIALOG_SHIM::SetPosition working)
- rename PCB_BASE_FRAME::SelectLayer() to PCB_BASE_FRAME::SelectOneLayer()
- PCB_BASE_FRAME::SelectOneLayer(): make dismiss dialog by escape key working.
Fixes #7578
https://gitlab.com/kicad/code/kicad/issues/7578
2021-02-17 20:56:43 +01:00
Jeff Young 34c2028e7b Assign via net before running DRC checks.
Fixes https://gitlab.com/kicad/code/kicad/issues/7579
2021-02-17 19:39:56 +00:00
Jeff Young d66de5bb35 Exclude footprints and groups from VIA_PLACER DRC testing.
(Their children need to get tested, but not the parent objects
themselves.)

Fixes https://gitlab.com/kicad/code/kicad/issues/7569
2021-02-17 14:08:53 +00:00
Jon Evans ba6aa3e034 Pcbnew: allow multiple selection of footprint text
With the selection filter and other improvements, we no longer
need to use this workaround to prevent accidental selections.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/7527
2021-02-16 22:40:23 -05:00
Jon Evans 34c2bbfe51 Don't rebuild the whole nets grid on show/hide
Besides being slow, this causes the scroll position
of the grid to be lost.
2021-02-16 22:31:09 -05:00
Jeff Young 2a7e60960a Use standard mirror icons & terminology.
Also use standard group icons.

Also put both (and rotate commands) in toolbar.

Fixes https://gitlab.com/kicad/code/kicad/issues/7504
2021-02-16 21:11:36 +00:00
James Jackson dd7030a28f Keepout and graphic selection filters in footprint editor behave as per PCB editor
Fixes #7547

Fixes https://gitlab.com/kicad/code/kicad/issues/7545
2021-02-16 20:49:14 +00:00
Jeff Young cf42d692bf Remove some dead code. A little bit of comment cleanup as well. 2021-02-15 14:13:43 +00:00
Jeff Young b7672d3c92 Respece router Allow DRC Violations in free via placer.
Also don't check for collision on non-copper layers, but do check
for hole clearance violations.

Fixes https://gitlab.com/kicad/code/kicad/issues/7532
2021-02-14 22:32:12 +00:00
Mikolaj Wielgus 379c28340f Pcbnew: Do not disable grid snap in copy to clipboard operation
This simple commit makes the Pcbnew copy to clipboard operation snap the
obtained cursor position to grid before the anchors are calculated. This
is also the way the move operation has been apparently working so far.

To be clear, this will not remove all cases where the copy reference
point is not aligned to the grid (see the linked Gitlab issue for
details about the problem). This will still occur for zone outlines that
are not axis-aligned. But such behavior has been so far also present in
the moving operation, so this may be as designed.

Fixes https://gitlab.com/kicad/code/kicad/issues/7507
2021-02-14 01:44:28 +00:00
Jon Evans b708fd36ae Add tooltips to netclass setup panel column headers
Change router tooltips to be more straightforward
2021-02-11 20:50:26 -05:00
Mikolaj Wielgus 1dc0ef01b3 Fix automatic wire tool in gridless mode
The automatic wire tool was not working in the gridless mode because the
grid snapping on/off logic present in `EE_GRID_HELPER`, based on the
value of `m_enableGrid`, was not taking into account that another check,
but for the global KiCad setting, would be performed in the `Align()`
method, which is inherited from `GRID_HELPER`.

I've modified all tests of `m_enableGrid` value to also take the global
setting into account, and moved checks for it to `Align()` method, as
it's more consistent this way.

I've also removed an override of the `Align()` method in the
`PCB_GRID_HELPER` class, as it was made redundant by my changes.

Fixes https://gitlab.com/kicad/code/kicad/issues/7402
2021-02-10 22:07:49 +00:00
Jeff Young 20338c92e8 Move Flip board view to a shared tool (for FP Editor).
Fixes https://gitlab.com/kicad/code/kicad/issues/6687
2021-02-10 17:06:19 +00:00
Jeff Young a49a6c2f52 Refresh zone layers when copper layers change opacity.
Fixes https://gitlab.com/kicad/code/kicad/issues/7468
2021-02-09 12:26:46 +00:00
Jeff Young e2f8b1a4b1 Interpreting wxDialog::ShowModal()'s retval as bool is never what you want.
Fixes https://gitlab.com/kicad/code/kicad/issues/7454
2021-02-08 17:40:57 +00:00
Mikolaj Wielgus 5aaedd86ed Add "Limit graphic lines to 45 deg" to line drawing tool context menu
Fixes https://gitlab.com/kicad/code/kicad/issues/7181
2021-02-08 16:20:38 +00:00
Jeff Young 6272b48481 Make sure layer gets passed in to rules evaluation. 2021-02-08 14:53:49 +00:00
Jeff Young 0ca76571ce Add footprint zones to paste routine.
Fixes https://gitlab.com/kicad/code/kicad/issues/7442
2021-02-07 11:50:59 +00:00
Jeff Young c2dbd28101 Simplify and harmonize symbol editor and footprint editor menus.
Some differences are due to difference between libraries being files
in symbol editor and directories in footprint editor, but this unifies
most of the rest.

It also dispenses with the save-to-library vs save-to-document distinction
in the GUI because it makes for too much variability in the GUI, was
implemented differently between the two editors, and isn't needed as much
anymore now that we have the highly visible infobar.

There was also an issue that the save-to-board icon occupies the same
location and has the same size/shape/colours as the Board Setup icon in
PCBNew.

Fixes https://gitlab.com/kicad/code/kicad/issues/7215
2021-02-06 14:33:16 +00:00
Jeff Young 49a09f4c1c Pad selectability fix.
Physical layer test needs to be board-visible-layers, not pad-layers.

Also cleans up the tests so that LOD factors in.  (When things
disappear due to zoom level they should not be selectable.)

Fixes https://gitlab.com/kicad/code/kicad/issues/7238
2021-02-06 13:57:40 +00:00
Jeff Young 065a16b48c Careful that we don't move the wrong end of the arc.
Fixes https://gitlab.com/kicad/code/kicad/issues/7409
2021-02-03 23:53:11 +00:00
Jeff Young 90519c8324 Allow pads with holes to be selected when hole is visible. 2021-02-02 14:23:29 +00:00
Jeff Young 8571687f51 Upgrade place via tool to new DRC.
Fixes https://gitlab.com/kicad/code/kicad/issues/7358
2021-02-01 23:00:13 +00:00
Seth Hillbrand 29632e8b6f Include footprint center as snap point
Only when footprint center isn't approximate the footprint origin as
well.  This can help when moving/aligning THT footprints

Fixes https://gitlab.com/kicad/code/kicad/issues/7385
2021-02-01 12:03:26 -08:00
Jeff Young 89d3b0b670 Remove breakage of corner pinning in point editor.
For some reason the post-pinned local variable references were replaced
with calls to the points themselves (which are the pre-pinned values).

Fixes https://gitlab.com/kicad/code/kicad/issues/7291
2021-02-01 00:35:45 +00:00
Jon Evans abf0a46dce Refactor PICKER_TOOL and push up snapping disable functionality
Fixes https://gitlab.com/kicad/code/kicad/-/issues/7348
2021-01-31 09:50:41 -05:00
Jeff Young a868fb97b6 Preserve Uuids when editing board footprints.
One way to do this would have been to keep the Uuids in the editor
copy.  However, this opens us up to errors if we forget a Save As or
export path and end up writing the Uuids out somewhere else.

In the end, it felt safer to store a map of the original Uuids and
restore them if we happen to save the editor footprint back to the
board.

Fixes https://gitlab.com/kicad/code/kicad/issues/7312
2021-01-31 14:09:59 +00:00
Jeff Young 56ea55ae9c Make sure that NPTH pads still get handled in copper clearance checker.
... because that's where we do hole-to-copper clearance testing.

Also augments the Clearance Resolution reporter to report on said
hole clearances.

And changes the interpretation of HOLE_CLEARANCE_CONSTRAINT to include
local pad clearance overrides.

Fixes https://gitlab.com/kicad/code/kicad/issues/7325
2021-01-31 00:33:35 +00:00
Jeff Young 41234a8373 Implement more precise annotation-required messages.
Also moves the message to an infobar so it's more noticeable.

Fixes https://gitlab.com/kicad/code/kicad/issues/7332
2021-01-30 16:31:27 +00:00
Seth Hillbrand 386ead30c5 All circle and arc tools to select all at first
Non-layer elements can be logical centers for the circle and arc tools.
We allow the non-layer to snap for the center points and revert to only
on-layer elements after

Fixes https://gitlab.com/kicad/code/kicad/issues/7327
2021-01-29 10:14:44 -08:00
Jon Evans b5e9a949bc Selection: skip sloppiness pruning if invalid
Fixes https://gitlab.com/kicad/code/kicad/-/issues/7320
2021-01-28 19:51:29 -05:00
Jeff Young 1a7b7e84c6 Use consistent terminology for component placement files.
CHANGED footprint positions files -> component placement files.

Not all footprints get placed, so component is a more neutral word.
Use of "placement" instead of "positions" removes the double-plural
that makes footprint positions files such a mouth-full.

Fixes https://gitlab.com/kicad/code/kicad/issues/7097
2021-01-28 19:24:55 +00:00
Wayne Stambaugh 6a39b81647 Fix the last of broken Doxygen comment specifiers. 2021-01-27 17:39:44 -05:00
Mikołaj Wielgus 3e42ba18a9 Show dragging tools in context selection menu for components
Show the dragging tools in the context selection menu when a single
component is selected. Prevent the dragging tools from appearing when
more than one object is selected, as they will not activate anyway.

Fixes https://gitlab.com/kicad/code/kicad/issues/7258
2021-01-27 19:55:42 +00:00
Jon Evans 79f94c096e Rename legacy selection filter action to avoid confusion
Fixes https://gitlab.com/kicad/code/kicad/-/issues/7290
2021-01-26 18:15:36 -05:00
Jeff Young dca7e44455 Fix a missed Module -> Footprint. 2021-01-26 10:56:19 +00:00
Michael Kavanagh d933a0a863 Use the pencil for Properties in Pcbnew 2021-01-25 14:21:23 +00:00
Michael Kavanagh eba09a59e9 Remove inappropriate icon 2021-01-25 14:21:22 +00:00
Jeff Young d40fe127aa Update pad locked status when adding footprints from schematic.
Also fixes some latent bugs with not updating the local ratsnest
visibility in other places, and the netcode in update PCB from schematic.

Fixes https://gitlab.com/kicad/code/kicad/issues/7202
2021-01-25 01:20:36 +00:00
Seth Hillbrand 47d5900600 Fix build warnings 2021-01-24 11:37:48 -08:00
Mikolaj Wielgus 04cc64c008 Restore the old reference after rotation or flip instead of clearing
After a rotation or flip the reference point has to be restored to the
previous value to prevent the dragged item from warping to the cursor.
Before this change, the reference point was only cleared, causing odd
behavior when a rotation or flip was performed.

Fixes https://gitlab.com/kicad/code/kicad/issues/7112
2021-01-24 18:56:46 +00:00
Roberto Fernandez Bautista f353fc448b Fix edge cases in EDIT_TOOL::DragArcTrack 2021-01-24 16:41:11 +00:00
Roberto Fernandez Bautista 99d203feae Clarify CIRCLE::ConstructFromTanTanPt
Remove unused bool aAlternateSolution and add doxygen comments
2021-01-24 16:41:11 +00:00
Roberto Fernandez Bautista 48823c0723 Formatting fixes and fix qa_kimath following rebase 2021-01-24 16:41:10 +00:00
Roberto Fernandez Bautista 6e7ae93cc8 EDIT_TOOL::DragArcTrack Fix incorrect undo history when items are deleted
Need to make sure we only apply one COMMIT operation per object before calling COMMIT::Push() or COMMIT::Revert()
2021-01-24 16:41:10 +00:00
Roberto Fernandez Bautista 2b5c1bae97 CHANGED: Dragging a curved track starts an interactive resizing of it, keeping start an end points tangent 2021-01-24 16:41:10 +00:00
Jeff Young 0ded846130 Go back to previous arc midpoint editing routine.
It avoids erratic behaviour near the chord or end-points.

Fixes https://gitlab.com/kicad/code/kicad/issues/7135
2021-01-19 23:50:40 +00:00
Michael Kavanagh 80dbc24326 Icons: remove superfluous icon
Remove icons where menu text gives context
2021-01-19 22:57:25 +00:00
Jeff Young 35978adef9 Don't run dimension updates while parsing files.
They mess up the geometry when only partial values are provided.

Fixes https://gitlab.com/kicad/code/kicad/issues/7177
2021-01-19 16:09:44 +00:00
Jeff Young 0a2a3c9903 Fix Coverity-discovered typo. 2021-01-19 10:57:07 +00:00
Michael Kavanagh 7461b96dea Hide the selection tool submenu in the FP Editor
Fixes https://gitlab.com/kicad/code/kicad/issues/7164
2021-01-19 00:30:44 +00:00
Jeff Young 12fe44d4b3 Snap arc center *by* the grid, not *to* the grid.
Also fixes a bug with editing an arc endpoint because the cursor pos
was being forced before the arc constraints stuff had been run (in
updateItem()).
2021-01-19 00:26:31 +00:00
Seth Hillbrand b8dfcb34c4 Revert "Use less-sophisticated arc editing math."
This reverts commit 3b424d3868.  And fixes
issue with rouding causing arc errors
2021-01-18 12:44:27 -08:00
Jon Evans 1e33928b96 Fix issues with zone filling connectivity locking
Two issues found with the locking system used to prevent access to
stale connectivity data during the zone fill process:

1) a std::mutex has undefined behavior if you try to use it to guard
against access from the same thread.  Because of the use of wx event
loops (and coroutines) it is entirely possible, and in some situations
inevitable, that the same thread will try to redraw the ratsnest in the
middle of zone refilling.

2) The mutex was only guarding the ZONE_FILLER::Fill method, but the callers
of that method also do connectivity updates as part of the COMMIT::Push.
Redrawing the ratsnest after the Fill but before the Push will result in
stale connectivity pointers to zone filled areas.

Fixed (1) by switching to a trivial spinlock implementation.  Spinlocks would
generally not be desirable if the contention for the connectivity data crossed
thread boundaries, but at the moment I believe it's guaranteed that the reads
and writes to connectivity that are guarded by this lock happen from the main
UI thread.  The writes are also quite rare compared to reads, and reads are
generally fast, so I'm not really worried about the UI thread spinning for any
real amount of time.

Fixed (2) by moving the locking location up to the call sites of
ZONE_FILLER::Fill.

This issue was quite difficult to reproduce, but I found a fairly reliable way:
It only happens (for me) on Windows, MSYS2 build, with wxWidgets 3.0
It also only happens if I restrict PcbNew to use 2 CPU cores.
With those conditions, I can reproduce the issue described in #6471 by
repeatedly editing a zone properties and changing its net.  The crash is
especially easy to trigger if you press some keys (such as 'e' for edit)
while the progress dialog is displayed.  It's easiest to do this in a debug
build as the slower KiCad is running, the bigger the window is to trigger this
bug.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/6471
Fixes https://gitlab.com/kicad/code/kicad/-/issues/7048
2021-01-18 13:22:12 -05:00
Michael Kavanagh 479487ceb1 Tidy up context menus a bit
Try and put the common actions in the same places
2021-01-17 22:42:03 +00:00
Jon Evans 6bb9aeab4b Position relative: store discarded pad for use as the selection anchor
Fixes https://gitlab.com/kicad/code/kicad/-/issues/6996
2021-01-17 14:25:52 -05:00
Jeff Young 68efdb2fff Push shared parts of GRID_HELPERs into common. 2021-01-16 23:18:10 +00:00
Jeff Young 3b424d3868 Use less-sophisticated arc editing math.
While it doesn't do the tangent retention that the old version did,
this one I can at least make work.

Fixes https://gitlab.com/kicad/code/kicad/issues/7135
2021-01-16 20:46:14 +00:00
Roberto Fernandez Bautista 00918c68f5 Don't do clever snapping logic when drawing a circle
Fixes https://gitlab.com/kicad/code/kicad/-/issues/7131
2021-01-16 08:39:20 +00:00
Jon Evans 38455c25ef Bring back consideration of world scale to PcbNew snapping
Fixes https://gitlab.com/kicad/code/kicad/-/issues/7125
2021-01-15 12:29:47 -05:00
Jon Evans 6cc39d8011 Don't allow moving locked pads with Position Relative dialog
Fixes https://gitlab.com/kicad/code/kicad/-/issues/6996
2021-01-14 22:14:00 -05:00
Jeff Young 36508807e7 Give the pad placement tool a context menu.
ADDED: allow pad properties to be edited while placing pads.

Fixes https://gitlab.com/kicad/code/kicad/issues/6953
2021-01-15 00:52:03 +00:00
Mikolaj Wielgus 0129c7ae52 Notify appearance panel when net is (un)hidden by board inspection tool
Fixes https://gitlab.com/kicad/code/kicad/issues/7039
2021-01-14 17:22:41 +00:00
Jeff Young 3e920c665f Special case via area generation.
Fixes https://gitlab.com/kicad/code/kicad/issues/7105
2021-01-14 12:48:44 +00:00
Seth Hillbrand 13a4717aed Add center handles to rectangle edits
Allows changing a single dimension at a time.  Matching the polygon edit
tool.

Fixes https://gitlab.com/kicad/code/kicad/issues/7085
2021-01-13 14:04:21 -08:00
Jeff Young ffdff21f45 Use a sloppier hittest for the collector as well as the actual hittest.
Fixes https://gitlab.com/kicad/code/kicad/issues/7079
2021-01-13 21:22:24 +00:00
Jeff Young 0bce280424 Make sure design rules get recompiled after netclass changes.
Fixes https://gitlab.com/kicad/code/kicad/issues/7082
2021-01-13 12:37:20 +00:00
Seth Hillbrand 6ed2a831d8 Don't override the router tool with drag actions
Before processing the select tool actions, we check if the router is
currently active and if it is, pass the event for processing in other
tools

Fixes https://gitlab.com/kicad/code/kicad/issues/7021
2021-01-12 15:44:20 -08:00
Michael Kavanagh 32f7f30958 Icons: remove where they don't make sense
Also avoid icon reuse
2021-01-11 23:31:25 +00:00
Michael Kavanagh 8fba0c257b Icons: remove more inconsistencies around Select
Missed from 5d9b2d3fea
2021-01-11 23:31:24 +00:00
Seth Hillbrand 740df93808 Don't dereference board groups in fp editor
The Footprint editor group resolution should stop at the footprint level
to avoid breaking into groups that cannot be accessed.

Fixes https://gitlab.com/kicad/code/kicad/issues/7049
2021-01-11 14:58:33 -08:00
Jeff Young 50889a9ed6 Promote mouse drag settings to full enums. 2021-01-11 22:09:36 +00:00
Seth Hillbrand c09dc5abdd Prevent locking items in footprint editor
Adding footprints to the board now has a preference for whether we want
pads locked or unlocked by default
2021-01-11 11:23:26 -08:00
Jeff Young 6c648df4c6 Support 3 drag vs. select options, and unifiy with other drag prefs.
Fixes https://gitlab.com/kicad/code/kicad/issues/5493
2021-01-11 11:50:14 +00:00
Jeff Young 9ce6c2be80 Group global editors under tools menu.
Also improves some terminology in Remove Unused Pads.
2021-01-11 11:50:14 +00:00
Jeff Young ed7b3373d1 Disentangle copper- and board-edge-clearances in Clearance Resolution...
Fixes https://gitlab.com/kicad/code/kicad/issues/6983
2021-01-09 16:44:03 +00:00
Jeff Young 78dcfb2392 Honour locks inside groups.
Fixes https://gitlab.com/kicad/code/kicad/issues/6841
2021-01-09 13:47:24 +00:00
Seth Hillbrand cf2dd0bd38 Fix edit_tool pad handling
Check for footprint editor
Promote pad edits to footprint edits iff
 - Pad is locked
 - Footprint is not

Otherwise, handle the pad normally and prompt for locked items if found
2021-01-08 19:46:14 -08:00
Seth Hillbrand 1c9d8a9f4c Don't warn on locked conversion 2021-01-08 16:49:47 -08:00
Seth Hillbrand 51f02ecc51 Fix alignment tool with locked footprints 2021-01-08 13:58:26 -08:00
Seth Hillbrand 721155165d Don't move locked footprint if pads are locked 2021-01-08 13:58:26 -08:00
Jeff Young d0af4e9f9d Save a cancel value when asked if it's not being used to cancel.
Many, many KIDIALOGs use OK/Cancel and then rename both buttons to
confirm or deny some action.  In those cases we *do* want to store
the deny actions if they check "Do Not Show Again".

Fixes https://gitlab.com/kicad/code/kicad/issues/6979
2021-01-08 21:32:19 +00:00
Jeff Young 3467e643e5 Move pad locking from footprint to pads.
Fixes https://gitlab.com/kicad/code/kicad/issues/6997
2021-01-08 20:43:02 +00:00
Seth Hillbrand 9424d66d22 Move footprint when selecting locked pad
Prompting to unlock is obtrusive and blocks the common action of
dragging from a pad to align footprints.  The less common action of
editing pads in layout can be accomplished after unlocking the pads

Fixes https://gitlab.com/kicad/code/kicad/issues/6997
2021-01-07 19:46:06 -08:00
Jon Evans 24435df6b0 Don't update 3D view on cursor movement
Our rendering pipeline is not set up for this kind of speed,
and this is a blocking operation at the moment.

Note that we will get an update at the end of the move
because OnModify does it.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/6819
2021-01-07 20:43:14 -05:00
Jeff Young 3fd128a75b Performance enhancements. 2021-01-08 00:46:55 +00:00
hoijui 6ca9a42251 Removes 3 other instances of a potential encoding problem
Signed-off-by: hoijui <hoijui.quaero@gmail.com>
2021-01-07 17:36:49 +00:00
Seth Hillbrand c0f940438a Clarify Flip action
Fixes https://gitlab.com/kicad/code/kicad/issues/6954
2021-01-06 13:02:44 -08:00
Jeff Young 2a088e5c7b Add conversion of circles to zones and enable in footprint editor.
Also rule areas, of course.

Fixes https://gitlab.com/kicad/code/kicad/issues/6966
2021-01-06 17:21:49 +00:00
Jeff Young 70967bfebd Hierarchical menu parents don't get ...'s.
Also moves the Convert menu up a level.  Nested hierarchical menus
should be avoided whenever possible.
2021-01-06 17:21:49 +00:00
Michael Kavanagh 6fd718fbd8 Icons: replace old with new 2021-01-06 00:35:20 +00:00
Michael Kavanagh 5d9b2d3fea Icons: new filter icon
+ remove icons where they don't make sense.
2021-01-06 00:35:20 +00:00
Michael Kavanagh 54724096ea Icons: consistency between Eeschema and Pcbnew 2021-01-06 00:35:20 +00:00
Seth Hillbrand 71a93c71f7 Prevent footprint editor snapping to footprint
Inside the footprint editor, we only want snap points from the base
elements

Fixes https://gitlab.com/kicad/code/kicad/issues/6948
2021-01-05 16:08:30 -08:00