Report Day 3

Report Day 2 : 10th July 2013

Expression

trunc - convert number to integer

padzero - how many zeros, float values

$0S - operator string variable

Trouble faced.

I was having problems with the hose tutorial where an object is copy stamp to a grid with random scatter points.

The problem I faced was that the object does not follow the null when i start to move it on 3d space.

The part where he explains about the distance and normal minus point upvector, I do not quite understand

$TX-point("../upvector",1,"P",0)

Lesson 6 :

Attributes and Variable

Attributes is a named value store on vertices, primitive, etc.
It is a data attached to geo (build into the geo)
I can add more and delete attributes to the geo.

By default, a geo has a position attribute. (1 point attribute)

attributePromote

- it is use to promote or demote and attribute, eg) from point to primitive.

Details View is a shelf where I can see all the attributes that encompass the whole geometry.

I learn how to group geometry using attributes. I have done this before where I import a model inside houdini from maya and seperate the geo by using this partition node.

I modelled a geo in maya in houdini and rename the geo according. When i import the geo in houdini I can textures and call the geo easily by using the connectivity and partition node.

The most interesting part of this lesson is learning the attributes transfer from a sphere color point attributes and transfer it to a grid.

By using the attribute transfer node, i can transfer attributes to another geometry.