Nov '18

I am fighting with anatomy for a month now. It is very hard for me to remember where all the muscles attach.
I've managed to remember the torso quite well, including the names of the muscles. Somehow I've learned arms too.. But leg muscles knowledge is a bit unclear for now.

To be honest I really enjoy learning anatomy so far because I work out and it makes a lot more sense to me now since I know what attaches to what.

anatomy back and front.jpg7333x5615 1.31 MB

Nov '18

I think that i messed up trapezius again.. oh boy oh boy

Let me know if something else is off.
Feedback is highly appreciated

Nov '18

Ive been using this website to check the attachment points, its pretty awesome.

https://www.healthline.com/human-body-maps/rectus-femoris-muscle

I placed the link on the rectus femoris muscle because that is the only attachment point that I see on your leg that will change the shape that is a tiny bit off. It dives in and down a bit more than you have, and I have noticed that it makes a dimple right underneath the Ilium on most people. On a lot of "sexy" designs where the pants are meant to show the hips or like bikini bottoms I see that dimple all the time. And after writing that I realized I had an example image.

You can see that the Sartorius and the Tensor Faciae latae kinda define the top of the shape and the way the Rectus Femoris dives down defines the bottom.

And this other website I like to use to find the specific spots for attachments, the graphics aren't as nice, but they spell out the origin and insertion attachment info better.

https://www.getbodysmart.com/anterior-thigh-muscles/rectus-femoris-muscle

Hope it helps!

Nov '18

This is very-very helpful, @PeterH! Thanks a lot!
I will have a closer look at this!

these links are awesome. I was having a bit of a trouble trying to locate where the leg muscles attach to :blush: cool!

8 months later

Jul '19

The local values on the rocks look solid, really shows off the forms. However, the cast shadows seemed a bit off to me. I drew them out using the yellow bar on your right with the top as a point light and the bottom as its xy position on the ground plane. I just cropped out the floating structure, without the original construction lines I might give you bad information.

I hope that this makes sense, there are a lot of shadow construction lines all layered together and I know that makes it a bit muddled.

The top image is the corrected cast shadows and construction, and the bottom is those corrections overlaid on your image.

Let me know if this does or does not help. And thank you again for the comment on the swamp with the hags cauldron, I have to blend that much better, or even better try to find a reference for it.

Jul '19

Thanks for the feedback
I tried to recreate it by myself.
I don't know why my shadows ended up to be so off but the reason might be in that i did them in the beginning and didn't double check them in the end.
Either way, Here's how i measured it myself, please let me know if i did something incorrect.
As for the big shape i just assume it's a rectangular and solid at the back, yes.

1.jpg8000x5800 1.25 MB

2.jpg8000x5800 606 KB

I excluded the floating shape as it wasn't the best in general, I will do another attempt of similar exercise

Jul '19

The near one you got spot on.

The further and more broken up one I can see that the intersections between the ground lines and the light rays got a bit confused and led to the shadow being distorted. It is quite hard to keep track of all of the intersections when there are so many to check and they are all close to in line with each other.

I marked the lines over your image and left all construction lines you drew in place to show where things were confusing.

The right broken side of the object (from our point of view) can be ignored because its points fall within the overall shadow and hence we wont see them.

I separated the colors of the shadow line and the light rays into sets for the remaining 3 corners and labeled the intersection points. I find it really clears things up and reduces confusion to first draw the ground shadow direction line, and then draw the light ray line coming down and stop the light line right at the intersection with the shadow line. All the right lines were there you just flipped some of the vertex points.

I am always happy to check this stuff, it gets my math brain working a bit harder, a good break from creativity to just focus on hard reality stuff.

Jul '19

oh yes geometry and being focused are hard things haha
damn, i see it now, i'll try to be more attentive next time
I'll fix that right away, thanks Peter! :+1:

Jul '19

My highly accurate method of holding a rule up to the screen says that those ones look all good. If you want more of a challenge, move the light closer to the arc so that it casts the shadow over top of the smaller box and you have to figure out all of the top arc too.