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## 3.116. surfaceFunction command

Description: This option creates a surface by defining two parameters and three functions.

Inline mode usage:

• surfaceFunction -h: Displays the help file that summarizes the parameters for this command.
• surfaceFunction –n <name> -p <u_start> <u_end> <u_samples> <v_start> <v_end> <v_samples> <x=f(\$u,\$v)> <y=f(\$u,\$v)> <z=f(\$u,\$v)>: Create surface with three functions that defining points in cartesians.

Interactive mode usage:

• Invocation: surfaceFunction
• Parameters:
• Parameter “u” (start end samples) in order to define range of variable “u”.
• Parameter “v” (start end samples) in order to define range of variable “v”.
• x = f(\$u,\$v) for X coordinate function
• y = f(\$u,\$v) for Y coordinate function
• z = f(\$u,\$v) for Z coordinate function
• Remark: The parameters u and v of the functions are bound to the variables \$u and \$v.

Example:

>surfaceFunction

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

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

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

y = f(\$u,\$v) = \$v

z = f(\$u,\$v) = sin(\$u) + sin(\$v)

Result: Result of surface function

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