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## 3.30. curveFunction command

Description: This command draws a curve with three functions that define points in Cartesian coordinates.

Inline mode usage:

• curveFunction -h: Displays the help file that summarizes the parameters for this command.
• curveFunction –n <name> -p <u_start> <u_end> <u_samples> <x=f(\$u)> <y=f(\$u)> <z=f(\$u)>: Creates a curve named <name> that starts in <u_start>, ends in <u_end> and has <u_samples>, defined by functions <x=f(\$u)>, <y=f(\$u)> and <z=f(\$u)>.

Interactive mode usage:

• Invocation: curveFunction
• Parameters:
• Parameter ‘u’, define range of variable ‘u’: start end samples.
• ‘x’ coordinate function: x=f(\$u).
• ‘y’ coordinate function: y=f(\$u).
• ‘z’ coordinate function: z=f(\$u).
• Remark: The parameter is bound to the \$u variable.

Example:

> curveFunction

Parameter ‘\$u’ (start end samples): 0 24 48

x = f(\$u) = \$u

y = f(\$u) = sin(\$u)

z = f(\$u) = 0

Result:

Resulting curve function

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