Well i fel lbehind abit with blogging my work over the easter holidays, so i will compile it all into one post.
As you know i have been working on the dynamics within the film The Little Helper.
I will post my progress in the form of playblasts from the beginning of each shot to the completion of each shot.
My first task was to make an object bounce between two webs that are situated on a ship, then for the object to bounce into some toy soilders. I set the scene up using ncloth for the webs and constraining the webs to the ship, using a point to surface constraint. I made the falling object that is to interact with the webs a passive collider.
I started off trying to get the web to hang correctly from the initial pose.
The web stretches to much so i increased the webs stretch resistance.
Ok so now i wanted to stop the bounce, to do this i found a frame where the web sits at the bottom of its hang, and set the initial state of the ncloth to there.
This is sitting ok however the object seems to stick to the web, deforming the middle as it leaves its bounce. I added the same settings for the second web so they both sit nicely to begin with.
Working on the first web, i next tried to remove the deformity caused by the falling object.
I have managed to reduce the deformity on the first web a little bit. I then changed some of the ncloths atributes to try to further remove the deformity, in which i was sucessful, however the web now seems to move way to much.
After going out and looking at some spider webs i realised that their webs dont hang down as much as the ones i have created, mine almost being like a hammock rather than a web. I noticed that the webs were alot flatter in real life. To try achieve this i increased the ridgidty of the webs.
This is to ridgid and way to bouncy, i changes some more atributes however this hasnt made it much better.
I decided i would try a new direction with this as im not getting the results i wanted. I striped off the ncloth and all the dynamics and started from fresh. I decided i would constrain the web all the way around the outside, this way i can get a better bounce from the web.
I added a passive collider to the object to see how it would interact with the web.
Already this is looking much better than my first attempts.I then used the same settings for the second web and playblasted to see how it looked.
Next i need to move on to makeing the soilders fall over. I am going to set up a ridgid body simulation to do so. I had a few problems with this to start off with, as all the props within the scene were from reference files rather that actually in the scene i had to combine the meshs of the soilder and the gun, for the ridgid bodys to become active.
This is the steps i took to make the toy soilders fall, i wont explain each one as i was just changing settings and thier positions so that
I added in some animation with the catapult being used when the soilders fall into it.
However after i had done this jenny informed me that they had a new referencing system so i would have to add these dynamics to seperate shots.
The Title Scene.
My next scene to add dynamic to was the title scene. My objectives of this scene were to make the spider web move when sally walks over it, i also had to make the letters making up the title look as if they were stuck in the web.
My first part to tackle was adding dynamics to the web to make it look real, to do this i added an ncloth to the web and constrained all the sides with a transform constraint.
As you can see i need to turn the stretch resistance up as the web just sags towards the floor. I turned this down abit but obviously not enough.
I got the web to sit correctly, so then i added passive colliders on the feet of the spider and increased the stickyness so that you could see the web move under his feet.
I increased the collision strength to have move impact on the web when the spider walks over it.
My next task was to make the letters look as if they were stuck to the web, i achieved this by turning all the letters into ncloth, with the ridgidity turned up to 10, i then selected all the vertecies on the ncloth and point to surface constrained them to the webs ncloth.
I had to do a bit of shuffling around with the letters so that they would behave the way i wanted them to, this was because the web wasnt detailed enough so they swang around a little bit.
I didnt like the bounce the web had when the simulation started so i removed the gravity from the ncloth.
I then removed the little bits of twitching on the web.
Close up shots.
My next task was a series of close up shots of the spider.
I started with shot 2. First i added an ncloth to the web then constrained all the edges as i did before. I then added passive colliders onto the feet of the spider.
At first the web was to bouncy so i decided to remove the gravity as i did with the previous webs, this allows me to have better control over the web.
I then moved on to shot 5. I added the same settings to the shot however it did need tweeking.
I need more movement than this on the web, so i increased the collision strength on the feet, however it was slightly to high.
This seems to be a little better but still needs some adjustment to it.
This seems to be working much nicer now.
My next scene that i had to complete was shot 32.
Again i started off using the same settings then went through and tweeked it accordingly.
With Initial Settings.
I felt there was to much movement on the web, which gave it an underwater feel. I will try tune this out.
Initially i made this worse, i tryed to move the web around (up and down) to find the best place for it to sit, however i think i bought it up to high as the foot sweeps through the web causing it to deform.
I managed to get rid of the deformity, however the impact is still to much.
I turned down the stickyness of the front foot, i think its starting to look much better.
Jenny also wanted some shaking on the web when the spider starts shaking its legs, as i could not achieve this just using the legs as deformers, i decided to make three spheres which were passive colliders, and animate them on the left legs. This way i can have some more control over the web and increase the shaking how i want.
First i just put basic movements in to see how it would look.
I tried to tweak them but it caused them to deform the web.
I managed to get rid of the deformity.
A few little tweaks later…
My next tasks on this film are to make ncloth clothing for Frankie and make a pully system made from webs.
Stay tuned for updates…