nCloth Dynamic Simulations

smallarrows.GIF

                                                                  
ball
Bouncing Ball


Set up your options for animation:
File -> New Scene->boxicon.gif
Select Time: NTSC (30 fps)  (We record to video, 30 frames per second is the frame rate.)
Set the Playback Start/End between 1 and 300.
Set the Animation Start/End between 1 and 300.
Hit Apply

Use Windows->Settings/Preferences->Preferences
     Choose the Settings section.
     Make sure Time: NTSC (30 fps)

Choose the Time Slider section.
     Make sure Playback Start/End between 1 and 300.
     Make sure Animation Start/End between 1 and 300.
     Select Playback Speed Play Every Frame, this will allow the simulation to process every frame.
     Your playback speed will not be accurate
     Set Max Playback Speed to Real-Time
     Click Save

timeslider.jpg
Make sure the maximum playback on the time slider to 300, over to the right on the time slider.


Choose
Create->Polygon Primitive->Sphere

Use the channel box on the right side of the screen and input: Translate Y  4, Rotate Z  5

Switch over to the FX section, choose from upper left, status line.

Select the sphere
Choose nCloth->Create nCloth

Play the animation. Notice how soft the sphere is.

Try some adjustments:

Nucleus
Select the sphere
Use the attribute editor on the right
Choose the nucleus1 tab  (You may need to arrow over.)
The nucleus is the same for all objects, it is like an environment with gravity etc.
     Under Ground Plane
, select Use Plane
run your simulation again

Open Scale Attributes
     Input Space Scale  4
This will scale the environment closer to reality, right now it is too small for the objects, default 1 grid unit = 1 meter. Options like gravity will function more realistically. Your ball was 2 meters wide (6.5 feet), it is now similar to  .5 meters (1.5 feet). Notice the animation slowed down, you may need to increase your time line.

Make the ball more stiff
Select the sphere
Under Dynamic Properties
    
change Rigidity to 3, (default 0)
     Run you simulation again, play with rigidity

nCloth1

Tablecloth
Use the table from the first polygon tutorial:
http://users.design.ucla.edu/~cariesta/MayaCourseNotes/html/poly_table.html


Select the table
Choose Edit->Delete by Type->History. This will make the dynamic simulation run faster.

Make a tablecloth out of a plane place above the table.
Create->Polygon Primitive->Plane->option.jpg
     Width and Height 6, 6
     Width and Height Divisions 20, 20

Place the cloth above the table in the Y Axis.

Switch over to the FX section, choose from upper left, status line.

Select the table
Choose nCloth->Create Passive Collider

Select the tablecloth
Choose nCloth->Create nCloth


Set up your options for animation:
Use Windows->Settings/Preferences->Preferences...
     Choose the Settings section.
     Select Time NTSC (30 fps)  (We record to video, 30 frames per second is the frame rate.)

Choose the Timeline section.
     Set the Playback Start/End between 1 and 300.
     Set the Animation Start/End between 1 and 300.
     Select Playback Speed Play Every Frame, this will allow the simulation to process every frame.
     Your playback speed will not be accurate
     Click Save

timeslider300.jpg
Make sure the maximum playback on the time slider to 300, over to the right on the time slider.

Play the animation.

Try some adjustments:
Nucleus
Select the tablecloth
Use the attribute editor on the right
Choose the nucleus1 tab
The nucleus is the same for all objects, it is like an environment with gravity etc.
     Under Ground Plane, select Use Plane
run your simulation again

Open Scale Attributes
     Input Space Scale  5
This will scale the environment closer to reality, right now it is too small for the objects, default 1 grid unit = 1 meter. Options like gravity will function more realistically. Your tablecloth was 6 meters wide (19.5 feet), it is now similar to  1.2 meters (4 feet). Notice the animation slowed down, you may need to increase your timeline.

Keep the tablecloth on the table
Select the tablecloth
Under Collisions
    
change Stickiness to 1 (default 0)
Run you simulation again

Make the cloth less stiff
Select the tablecloth
Under Dynamic Properties
    
change Bend Resistance to 0, (default .1)
     Run you simulation again

Use the simulation to model
Run you simulation again, stop it towards the end
Select the tablecloth
Choose Edit->Duplicate
The copy will not have any dynamics