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*
Returns:
Returns the first parameter if not undefined, otherwise the second parameter.
Example:
param = Cesium.defaultValue(param, 'default');
defined(value) → boolean
engine/Source/Core/defined.js 14
Name
Type
Description
value
*
The object.
Returns:
Returns true if the object is defined, returns false otherwise.
Example:
if (Cesium.defined(positions)) {
doSomething();
} else {
doSomethingElse();
}
destroyObject(object, message)
engine/Source/Core/destroyObject.js 35
Destroys an object. Each of the object's functions, including functions in its prototype,
is replaced with a function that throws a DeveloperError, except for the object's
isDestroyed function, which is set to a function that returns true.
The object's properties are removed with delete.
This function is used by objects that hold native resources, e.g., WebGL resources, which
need to be explicitly released. Client code calls an object's destroy function,
which then releases the native resource and calls destroyObject to put itself
in a destroyed state.
Name
Type
Description
object
object
The object to destroy.