Vol100c02j01 Data Flow Through Chops

Notes on vol100c02j01, j02, m01 & vol100c03 a01-b01

vol100c02j01 Data flow through CHOPs

https://www.youtube.com/watch?v=TcL4N4-QSbc&index=9&list=PLJBoGo6-CCya4NvgvGcPJxdUnLN01gwKg

Create a box and a grid to start this exercise or Start with ch02j01_v1.hipnc. Inthis video,Export CHOPpushes the channel information created byWave CHOPto the SOP Network.
CHOPscan be accessed

·  in the dedicated section (context) of the software /ch or

·  in other contexts, e.g. in /geo, Tab -> Managers -> CHOP Network.

Motion View is called Motion FX View. In order to see CHOP’s output in Motion FX View you need to turn on the CHOP’s Display flag.

In order to export a channel, turn Export CHOP’s Export flag.

Right clicking a node gives you a menu with options such as Flags, Actions, and Parameters and Channels. Create Reference Copy is under Actions.

Create Reference Copycreates a copy in that each parameter is linked to the original by ch( ). If you change the copy’s parameter value, the original is changed as well,and vise versa. In order to break the link,right click on a parameter and chooseDelete Channelsor Ctrl+Shift+LMB.

To see dependency links, go to View in Network Editor and select Show for All Nodes under Dependency Links.

vol100c02j02 Data flow through CHOPs

https://www.youtube.com/watch?v=czTY3Au_8EA&list=PLJBoGo6-CCya4NvgvGcPJxdUnLN01gwKg&index=10

In this example, Geometry CHOP fetches channel information from the SOP Network and Channel SOP fetches the channel information manipulated by Lag CHOP in the CHOP Network.

Geometry CHOP uses a geometry object to choose a SOP from which channel information is created.

·  If Export Relative Path is used: ../../null_to_CHOPs

·  If Export Relative Path is not used: /obj/geochops/null_to_CHOPs

P[x] P[y] P[z] are renamed as tx ty tz in Geometry CHOP.
Change Method from Static to Animated in Geometry CHOP.

In /obj/geochops, insert a Transform SOP below xfrom_put_on_the_table and set
Translate x: sin($FF * 10) * 2
Translate z: cos($FF * 10) * 2
Add a Lag CHOP to manipulate channels in chopnet1.

In Channel SOP’s Choose Operator, turn on Export Relative Path and choose null_export in chopnet1.

vol100c02m01 Difference kinds of animations

https://www.youtube.com/watch?v=Wkr6aBAQut0&list=PLJBoGo6-CCya4NvgvGcPJxdUnLN01gwKg&index=14

To key a parameter, Alt + LMB on a parameter name.

The color of a parameter box indicates:

·  Green – keyed

·  Blue – not a key but there keys are in the channel

·  White – no keys in the channel.

The default interpolation method is Bezier.

To open Channel Editor,

·  RMB on a parameter name -> Channels and Keyframes -> Scope Parameters or

·  Select the operator and V key.

Click on the small arrow in the right lower corner of Channel Editor to see interpolation options.

To delete all keys, RMB on a parameter name -> Delete Channels or Revert to Defult

Clicking a curve segment between keys (“wire”) with RMB gives you a pop up menu. You can select an interpolation method (constant, straight, Bezier, cube, etc.) for the curve segment under Set Selected Segments to…

A camera doesn’t have a built in Look At option any more. To use Lookat Constriant, double-click the camera to go into the camera’s geometry level and select Constraints from Tab menu. Go into “constrains” (constrains networks) by double clicking it. You will find getworldspace. From Tab menu, select Lookat. Connect lookat to getworldspace. From Tab menu, select Object (import). In Object, select Target (the object to look at). Connect Object to lookat. Move Output flag to lookat.

vol100c03a Top operators (mostly about textport)

https://www.youtube.com/watch?v=ifpFCyR2cj0&list=PLJBoGo6-CCyZQeGhwaUg_CAY7Ihm6Bbml

vol100c03b
https://www.youtube.com/watch?v=XXietoxB8EI&list=PLJBoGo6-CCyZQeGhwaUg_CAY7Ihm6Bbml&index=2

Use Assgn8.hipnc (http://www.utdallas.edu/atec/midori/3310/Assignments/Assgn8.hipnc) for this tutorial.

Most often used operators in the object level and their examples:

·  Geometry Container Object (geo1)

·  Camera (cam1), Light (hlight1)

·  Environment Light (envlight1)

·  Atmosphere (fog1)

·  Null (null1)

·  Rivet (rivet1)

·  Toon Character (toon_character1)

·  Grid (grid_object1)

·  Sphere (sphere_object1)

·  Torus (torus_object1)

In Network Editor, Shift + T shows/hides a list view.