data_math

Synopsis

perform mathematical operations on fields using V expressions

Input Port

in_field1	Mesh + Node_Data
in_field2	Mesh + Node_Data
in_field3	Mesh + Node_Data
in_field4	Mesh + Node_Data
ui_parent	user interface parent object

Parameters

Operation	UItext	expression to evaluate
data type	UIradioBoxLabel	data type for computation & output

Output Port

out_fld	same Mesh + Node_Data
out_obj	output renderable object

Description

data_math performs mathematical operations on one to four input fields. You type in any valid V expression, and use the OutDataType selection box to pick the data type for the result.

Input

in_fieldn

The input field(s) must be a field with any type of mesh and Node_Data. You can use from 1 to 4 inputs. When typing the expression, you refer to them as #1, #2, #3, and #4.

data_math uses the first (0th) component of each field. Operations between two fields require that their components be the same length (nnodes must be equal) and both components have the same veclen.

ui_parent

A port to connect to a user interface object that contains the macro's widgets. By default, it is connected to the default user interface object in the application in which the macro is instanced. (This default connection is not drawn.)

Parameters

Operation

UItext. Any valid V mathematical expression. Do not enclose in quotes or terminate with a semi-colon (that is, ";"). The following expression calculates the vector magnitude of the 0th component of input fields 1, 2, and 3 (treating the combination of those three fields as a vector):

sqrt(pow(#1,2) + pow(#2,2) + pow(#3,2))

data type

UIradioBoxLabel. Radio buttons to set the data type in which the computation will be performed. Each input's 0th component Node_Data is first converted to that type, the computation is performed in that type, and the output Node_Data is in that type. The choices are char, byte, short, int, float, and double. The default is float.

Output Port

out_fld

The output field contains a new Node_Data that has the result of the computation. Its mesh is a reference to the input mesh of in_field1.

out_obj

This is a renderable version of the output field.

Example

Not available

File

v/modules.v

See also

For more information on expressions, see the section on value expressions in the Using AVS/Express manual.