Object used to be parented to active camera which isn't very convenient when
working with witness cameras.
Now parent camera can be specified in constraint (if it's not specified, active camera is used)
This commit implements basis stuff needed for object tracking,
use case isn't perfect now, interface also should be cleaned a bit.
- Added list of objects to be tracked. Default there's only one object called
"Camera" which is used for solving camera motion. Other objects can be added
and each of them will have it;s own list of tracks. Only one object can be used
for camera solving at this moment.
- Added new constraint called "Object Tracking" which makes oriented object be
moving in the save way as solved object motion.
- Scene orientation tools can be used for orienting object to bundles.
- All tools which works with list of tracks or reconstruction data now
gets that lists from active editing object.
- All objects and their tracking data are available via python api.
- Move tracking-related constraints to own section in list
Currently there are only two constraints, so can look a bit odd,
but it'll be other constraints like "Object Solver" and so.
- Move motion-tracking parameters from 3D viewport Display panel
to it's own panel.
- Get rid of "Bundle" in 3d viewport. It's quite obvious that it's
a 3D representation of tracks is used in 3D viewport and it shouldn't
be so confusing for artists now.
- Also get rid of "Bundle" in Follow Track constraint.
Old files can change a bit because of changes in DNA.
- Also get rid of "Bundles" in operator which creates vertices cloud
from 3D position of tracks.
- Rename "Principal Point" to "Optical Center" in the interface.
===========================
Commiting camera tracking integration gsoc project into trunk.
This commit includes:
- Bundled version of libmv library (with some changes against official repo,
re-sync with libmv repo a bit later)
- New datatype ID called MovieClip which is optimized to work with movie
clips (both of movie files and image sequences) and doing camera/motion
tracking operations.
- New editor called Clip Editor which is currently used for motion/tracking
stuff only, but which can be easily extended to work with masks too.
This editor supports:
* Loading movie files/image sequences
* Build proxies with different size for loaded movie clip, also supports
building undistorted proxies to increase speed of playback in
undistorted mode.
* Manual lens distortion mode calibration using grid and grease pencil
* Supervised 2D tracking using two different algorithms KLT and SAD.
* Basic algorithm for feature detection
* Camera motion solving. scene orientation
- New constraints to "link" scene objects with solved motions from clip:
* Follow Track (make object follow 2D motion of track with given name
or parent object to reconstructed 3D position of track)
* Camera Solver to make camera moving in the same way as reconstructed camera
This commit NOT includes changes from tomato branch:
- New nodes (they'll be commited as separated patch)
- Automatic image offset guessing for image input node and image editor
(need to do more tests and gather more feedback)
- Code cleanup in libmv-capi. It's not so critical cleanup, just increasing
readability and understanadability of code. Better to make this chaneg when
Keir will finish his current patch.
More details about this project can be found on this page:
http://wiki.blender.org/index.php/User:Nazg-gul/GSoC-2011
Further development of small features would be done in trunk, bigger/experimental
features would first be implemented in tomato branch.
Causing a flurry of refresh file prompts post-commit,
Confusing local diffs and causing merge conflicts,
Stating the obvious; redundant and useless...
We shall not miss thou, blasted expand $keywords$
The Limit Distance Constraint now has a "For Transform" option just
like all the other Limit constraints. This option controls whether the
constraint gets applied to interactive transforms in the 3D View too,
preventing controllers from getting large values without the animator
knowing.
Additional code changes:
* Split code to get constraint targets and grab their matrices for
solving out to a separate helper function:
get_constraint_targets_for_solving()
* Fixed a bug where "found constraint ...." prints would appear in the
console. Looks like some warning print that was forgotten
TODO:
* While coding this, I noticed potential division by zero bugs with
the Limit Distance constraint. Looking into these after this commit.
Reviewed by Tom Musgrove and myself.
From the patch description:
ValterVB on #blendercoders submitted a long list of missing tooltips in Blender, and I went through the list and added all I knew. After that I crowdsourced the rest by putting a spreadsheet on Google docs and having people fill in the missing ones that I didn't know. So if there's some weird tooltip in there that doesn't make sense, that's why.
Thanks to Wolter, spacetug and others on BlenderArtists for contributing tooltips.
From the tracker:::
Issues fixed:
- ConeTwist-constraint's params weren't making it to the CcdPhysicsEnvironment, also added Hinge's params.
- UI wasn't using angles where applicable.
- btHingeConstraint's constructor can create frame-matrices which don't align so the hinge doesn's start at 0 degree tilt.
This is an issue when setting limits.
Changes:
- UI: Hinge limits can be set (and disabled).
- UI: ConeTwist only has max-limits and only the twistX can be disabled
- PyApi via rna_constraint.c: added the functions limit_xyz_min, limit_xyz_max (for 6dof), limit_angle_xyz_min,
limit_angle_xyz_max (for 6dof), limit_angle_x_min, limit_angle_x_max (for hinge).
- PyApi: dropped python-function limit_cone_min.
.:. Extra:
UI Changes:
- renamed "RigidBody Joint" to "Rigid Boidy Joint"
- reorganized UI to conform with other parameters (e.g. Limit Rot)
- added dis/active all over the place :)
For Constraints, there's now a working "Local" Space for Objects
without parents. This is defined as relative to the object's rotated
set of axes which results from rotation that gets set via "rotation"
transform properties.
I'm not sure whether this different behaviour between parented and
unparented objects will be too confusing (and thus require separate
settings + a round of version patching), so I'll wait until we get
proper testing from experienced riggers first.
Floor constraint didn't work: the defines for the enums were using
the wrong ones, the right ones are not logical... but code and dna
and old files assume these. Now it works :)
* Added the options in UI and RNA
Funny Note: This was on my own to-do list (see commit 20577 in the py file from 2009-06-02 when I ported the UI from C to Python) :P
This troubles were caused by "break" of ND_OBJECT case in outliner area listener,
so not all cases were handled.
Handle more data and actions in outline listener, but not refresh when it's
actually unneeded (there where problems with it without that "break" -- extra
refreshing could be made).
These are not animated and are best not change names like this too late in the release.
ActionGroup.selected -> select: boolean Action Group is selected
BezierSplinePoint.hidden -> hide: boolean Visibility status
BezierSplinePoint.selected_control_point -> select_control_point: boolean Control point selection status
BezierSplinePoint.selected_handle1 -> select_left_handle: boolean Handle 1 selection status
BezierSplinePoint.selected_handle2 -> select_right_handle: boolean Handle 2 selection status
Bone.restrict_select -> hide_select: boolean Bone is able to be selected
Bone.selected -> select: boolean
CurveMapPoint.selected -> select: boolean Selection state of the curve point
EditBone.restrict_select -> hide_select: boolean Bone is able to be selected
EditBone.selected -> select: boolean
EditBone.selected_head -> select_head: boolean
EditBone.selected_tail -> select_tail: boolean
EditBone.locked -> lock: boolean Bone is not able to be transformed when in Edit Mode
EditBone.hidden -> hide: boolean Bone is not visible when in Edit Mode
NEGATE * FCurve.disabled -> enabled: boolean F-Curve could not be evaluated in past, so should be skipped when evaluating
FCurve.locked -> lock: boolean F-Curve's settings cannot be edited
FCurve.muted -> mute: boolean F-Curve is not evaluated
FCurve.selected -> select: boolean F-Curve is selected for editing
NEGATE * FCurve.visible -> hide: boolean F-Curve and its keyframes are shown in the Graph Editor graphs
FCurveSample.selected -> select: boolean Selection status
GPencilFrame.selected -> select: boolean Frame is selected for editing in the DopeSheet
GPencilLayer.locked -> lock: boolean Protect layer from further editing and/or frame changes
GPencilLayer.selected -> select: boolean Layer is selected for editing in the DopeSheet
Keyframe.selected -> select: boolean Control point selection status
Keyframe.selected_handle1 -> select_left_handle: boolean Handle 1 selection status
Keyframe.selected_handle2 -> select_right_handle: boolean Handle 2 selection status
MeshEdge.selected -> select: boolean
MeshEdge.hidden -> hide: boolean
MeshFace.hidden -> hide: boolean
MeshFace.selected -> select: boolean
MeshVertex.hidden -> hide: boolean
MeshVertex.selected -> select: boolean
MotionPathVert.selected -> select: boolean Path point is selected for editing
NlaStrip.selected -> select: boolean NLA Strip is selected
NlaTrack.locked -> lock: boolean NLA Track is locked
NlaTrack.muted -> mute: boolean NLA Track is not evaluated
NlaTrack.selected -> select: boolean NLA Track is selected
Object.restrict_render -> hide_render: boolean Restrict renderability
Object.restrict_select -> hide_select: boolean Restrict selection in the viewport
Object.restrict_view -> hide: boolean Restrict visibility in the viewport
Object.selected -> select: boolean Object selection state
ObjectBase.selected -> select: boolean Object base selection state
PoseBone.selected -> select: boolean
Sequence.right_handle_selected -> select_right_handle: boolean
Sequence.selected -> select: boolean
SplinePoint.selected -> select_control_point: boolean Selection status
TimelineMarker.selected -> select: boolean Marker selection state
Sequence.left_handle_selected -> select_left_handle: boolean
ActionGroup.locked -> lock: boolean Action Group is locked
Bone.hidden -> hide: boolean Bone is not visible when it is not in Edit Mode (i.e. in Object or Pose Modes)
SplinePoint.hidden -> hide: boolean Visibility status
FModifier.muted -> mute: boolean F-Curve Modifier will not be evaluated
note: rebaned uv_select to select_uv
* Constraint template now uses 2 rows as well, when the area width is small.
* UI Code could use some code/layout cleanup still, will look into that soon.
This constraint allows an object or bone to have their rotations applied as if their origin/pivot-point was located elsewhere. The most obvious uses include foot-roll, see-saws, but could also include more complicated rolling-box examples.
== Usage Examples ==
=== Foot Roll ===
1. Add 'Pivot' Constraint to the bone without any target.
2. Set the 'Y' value of the offset to the length of the bone. Usually this should be negative (if you rig with feet facing 'forwards' along -Y axis). This gives you a pivot point relative to the bone's (preconstraint) location, which should be at the tip of the bone here. Disabling the 'Use Relative Offset' would make this offset be relative to 0,0,0 instead of to the owner/bone-head.
3. Ensure that the 'Pivot When' setting is set to '-X Rot', (default) which means that the pivot will only used when the rotation on the X-Axis is negative to get tip-toe 'roll'.
=== See Saw ===
1. Add a 'Pivot' constraint too see-saw plank object, this time with a target that you wish to have as the pivot-point. It's possible to do this without too (as before), but is less intuitive.
2. Optionally, if you want the plank slightly raised, set the z-offset value, which should make the pivot-point used to be relative to the target with the z-offset applied.
3. Ensure that 'Pivot When' is set to 'Always', which means that the pivot will always be used, irrespective of the rotation.
== Notes ==
* The 'Pivot When' setting has been integrated in the constraint, since this is something that will often be required for these setups. Having to set up additional drivers to drive the constraint to do this kindof beats the purpose of providing this.
* The 'Offset' functionality is probably not presented as clearly as it could be. We may need to go over this again.
* For foot-roll - if any scaling of the foot is required, simply set up a driver on the y-offset to make this dynamically respond to the "scale" RNA property of the bones (don't use the "Transform Channel" vartype since that won't work correct here). However, this shouldn't be common enough to warrant special treatment.
