BUR #29963 has been rejected.
create alias inverse_kinematics -> stepping
Same thing? Inverse_kinematics appears to just be characters stepping up onto objects.
Posted under Tags
BUR #29963 has been rejected.
create alias inverse_kinematics -> stepping
Same thing? Inverse_kinematics appears to just be characters stepping up onto objects.
@Ourobouro's own tag:
I can't say that I like this tag.
I'm not a fan of the tag's name, it's so obscure that nobody will ever use it but I don't think the concept is useless.
it's currently impossible to find posts where a character is on uneven ground (which is I think a big reason why it's currently mostly populated with characters on stairs which are easier to find), if this is to be retained then I think it should just be renamed, some names that come to mind are: uneven_step, uneven_stepping, uneven_feet but none of those should all that great. Is this a tag that other people think is useful to have?
Yeah, the reason I created it was what John Reality mentioned, and it was the only term I could think of -- perhaps 'Uneven footing' would work instead.
-- Because people use the stepping tag for people simply walking, or merely lifting their foot in the air, due to it's vagueness. Same with Foot up -- that tag is supposed to be used for such a concept I have mentioned, but maybe only 5% posts are tagged as such correctly since it's too vague of a tag, and the tag is also used interchangeably with stepping. Stepping and foot up is also incorrectly used instead of heel up, dorsiflexion and plantar flexion. Tagged posts are just a hodgepodge of various foot/leg poses.
Tldr: If inverse kinematics gets aliased to stepping, it'd be a mess, adding onto what's already a mess.
Updated
BUR #29984 has been rejected.
rename inverse_kinematics -> uneven_foot_support
I tried to look up the concept of inverse kinematics, AFAIU it stands for the cases when there are 2 points in a fixed distance, and there are rods between them, see the pictures on pp 3,4,5 on http://www.andreasaristidou.com/publications/papers/IK_survey.pdf . Half of the pictures on the homepage could be tagged with it, when characters place their hands on something (own boob, own ass, own head etc). If you want a tag for the ground, or for the posture, or for both, I think it should have a different name.
I think uneven_foot_support is a better name than inverse_kinematics, but that is extremely scant praise. I'd be even more strongly in favor of the tag stepping for people taking a step up/down if that tag wasn't full of presenting_foot material. Time for a cleanup there? And then a wiki edit to clarify that stepping is more about taking / being in the middle of a step than stepping on anything.
Edit: I'm changing my vote on the original BUR to "meh" as well, since on second thought I can't help but agree that stepping is too vague for the proposed use. Tag names aside, the step up/down position does seem to be a taggable concept. Perhaps not the most valuable one.
Updated
reg_panda said:
I tried to look up the concept of inverse kinematics, AFAIU it stands for the cases when there are 2 points in a fixed distance, and there are rods between them, see the pictures on pp 3,4,5 on http://www.andreasaristidou.com/publications/papers/IK_survey.pdf . Half of the pictures on the homepage could be tagged with it, when characters place their hands on something (own boob, own ass, own head etc). If you want a tag for the ground, or for the posture, or for both, I think it should have a different name.
@reg_panda Yeah, you're definitely right. I've had that same issue with dorsiflexion only referring to feet on Danbooru, when in actuality, it can be feet and wrists, it's just that the term is /rarely/ used for wrists -- which is why I made dorsiflexion (wrist) to seperate the two. So I totally agree with your criticism -- I went by the same guidelines here that 'foot react with ground elevation' is the most common showcase of inverse kinematics, but like you said, it is not the only one, as supporting the hand or foot fully against something - such as a person leaning their back against a wall with their knee up and foot against it - is, too, inverse kinematics. (And just a person using arm support, for that matter.)
Something important I found
I just found that someone made a tag: captain morgan pose, so let's throw that in. Would there be any interest in having 'uneven foot support' aliased to this? I'm certainly familiar with this pose, but I'm not sure how ubiquitous it is, and it's certainly not the first thing that would come into my head when I'm thinking "How do I search/tag this?"
reg_panda said:
I tried to look up the concept of inverse kinematics, AFAIU it stands for the cases when there are 2 points in a fixed distance, and there are rods between them, see the pictures on pp 3,4,5 on http://www.andreasaristidou.com/publications/papers/IK_survey.pdf . Half of the pictures on the homepage could be tagged with it, when characters place their hands on something (own boob, own ass, own head etc). If you want a tag for the ground, or for the posture, or for both, I think it should have a different name.
Scientific papers are typically written for others in the field who understand the jargon. They are not ideal for learning about relatively basic concepts.
For those that don't know, inverse kinematics (IK) is just the opposite of forward kinematics (FK), which is how 3D models move by default. For example, in FK, moving the forearm moves the hand, but moving the hand does not move the forearm. IK reverses this; the hand is fixed in place, so the forearm won't move the hand, but will instead move the rest of the body. Think of doing push-ups as opposed to doing bench presses.
A better name for the tag would've been closed chain since it describes the action of the kinetic chain instead of the method used to calculate positions, but it would still have the same inherent problems.
Ourobouro said:
Something important I found
I just found that someone made a tag: captain morgan pose, so let's throw that in. Would there be any interest in having 'uneven foot support' aliased to this? I'm certainly familiar with this pose, but I'm not sure how ubiquitous it is, and it's certainly not the first thing that would come into my head when I'm thinking "How do I search/tag this?"
I think we should alias Captain Morgan pose to uneven foot support instead. The latter is easier to understand and seems better to me than any of the other existing tags we could use.
Edit: Added Wikipedia link for "closed chain."
Updated
I disagree, I think it'd be less accessible of a tag in that regard. Because nobody is going to suspect the tag is going to be called "Captain Morgan pose", but if they start brainstorming and type "foot_support", then see "Uneven_foot_support" is aliased to "Captain Morgan pose", I think that'd be an aha! moment.
If others could chime in what they think, I could create another BUR /if/ BUR #29984 is approved.
Nameless_Contributor said:
We already have foot_up: "One foot being braced on a solid surface above another." (yes it's 99% mistags)
If that's the case, I think we should just alter the definition of foot up to fit the incorrect use (within reason), and create a new tag for the original definition (which appears to be what is being discussed here). Honestly, I'm not surprised that tag is completely mistagged, as its name looks in line with tags like leg up or knee up but with feet, so I'm honestly kinda surprised that's not what foot up is supposedly for.
I'd suggest uneven ground as a possible name, but that sounds like it'd get used with things like rocky cliffs and hills more than people's footing not being even due to being against something like stairs. I personally think uneven footing would make for a better name.
Knowledge_Seeker said:
If that's the case, I think we should just alter the definition of foot up to fit the incorrect use (within reason), and create a new tag for the original definition (which appears to be what is being discussed here). Honestly, I'm not surprised that tag is completely mistagged, as its name looks in line with tags like leg up or knee up but with feet, so I'm honestly kinda surprised that's not what foot up is supposedly for.
The wiki says that leg up should be used for the cases when the foot is lifted off the ground, so changing the definition of foot up in the way you described would just make the tag redundant. I think we should do a sweep through the posts instead, replacing foot up with leg up when appropriate. We can then consider renaming the tag.
Blank_User said:
The wiki says that leg up should be used for the cases when the foot is lifted off the ground, so changing the definition of foot up in the way you described would just make the tag redundant. I think we should do a sweep through the posts instead, replacing foot up with leg up when appropriate. We can then consider renaming the tag.
Ah. Yeah, that sounds like a good solution.
foot_up should be for stuff like post #7520515, and by extention feet_up should be for stuff like post #7797924. It's consistent with our current x_up tags (arm_up, hand_up etc.), so having something else take foot_up's place is simply confusing.
As such, I support creating an uneven_footing tag.
BUR #30074 has been approved by @nonamethanks.
rename inverse_kinematics -> uneven_footing