Returns a 1 if an expression exists in a given field of an object that you specify; returns a 0 if it does not.
Format
EXPR_EXISTS (Object Field)
Argument
Object Field | Character string denoting the name of an object suffixed with a field name. |
Examples
The following examples assume that you created a marker as follows:
marker create marker=mar1 location=(loc_relative_to({0,0,0}, mar2)) ori=1,2,3
Function | EXPR_EXISTS(".mar1.location") |
Result | 1 (true) |
Function | EXPR_EXISTS(".mar1.orientation") |
Result | 0 (false) |