Operators

The operators described below can be used to manipulate data.

Mathematical Operators

The following arithmetic operators are supported:

Operator	Example Use	Description
`+`	`p + q`	Addition
`-`	`p - q`	Subtraction
`-`	`-p`	Returns the negative of a variable's value
`*`	`p * q`	Multiplication
`/`	`p / q`	Division
`^`	`p ^ q`	Power

When using vectors the following operators apply:

Operator	Syntax	Example use	Description
`x`	`V.x`	`fpItem.position.x`	Returns the 1st component of a vector
`y`	`V.y`	`fpItem.position.y`	Returns the 2nd component of a vector
`z`	`V.x`	`fpItem.position.z`	Returns the 3rd component of a vector
`+`	`V+W`	`fpItem.position + Object.position`	Addition
`-`	`V-W`	`fpItem.position + Object.position`	Subtraction
`*`	`V*W`	`fpItem.position * Object.position`	Dot Product
`*`	`V*p`	`fpItem.position * 5`	Scalar Multiplication
`/`	`V/p`	`fpItem.position / 2`	Scalar Division
`^`	`V^W`	`fpItem.position^Object.position`	Cross Product

Forest effects includes an If function to allow you to create conditional rules.

This function uses the following syntax:

if(p,q,r)

Where p is a logic test which returns q if it returns true or r if it returns false.

To create the conditional tests for an IF function you use following operators:

Operator	Example Use	Description
`==`	`p==q`	Return true if p is equal to.
`<`	`p<q`	Return true if p is less than.
`>`	`p>q`	Return true if p is greater than.
`>=`	`p>=q`	Return true if p is greater than or equal to q
`<=`	`p<=q`	Return true if p is less than or equal to q
`\|`	`p\|q`	Return true if p or q are true
`&`	`p&q`	Returns true if p and q are true