Inputs.PinchInput Class
Detects two-finger pinching motion and emits start, update and
end events with the payload data:
value - Distance between the two touches
delta - Differential in successive distances
velocity - Relative velocity between two touches
displacement - Total accumulated displacement
center - Midpoint between the two touches
touchIds - Array of DOM event touch identifiersConstructor
Inputs.PinchInput
-
options
Example:
var pinchInput = new PinchInput();
pinchInput.subscribe(Engine) // listens on window events
pinchInput.on('start', function(payload){
console.log('start', payload);
});
pinchInput.on('update', function(payload){
console.log('update', payload);
});
pinchInput.on('end', function(payload){
console.log('end', payload);
});Item Index
Methods
Methods
"on"
-
type -
handler
Adds a handler to the type channel which will be executed on emit.
filter
-
filterFn
Parameters:
-
filterFnFunctionFunction to filter event payload
get
-
key
Look up options value by key or get the full options hash.
Parameters:
-
keyStringKey
Returns:
Associated object or full options hash
getOptions
()
Alias for get
key
-
key
Return OptionsManager based on sub-object retrieved by key.
Parameters:
-
keyStringKey
Returns:
Value
map
-
mapperFn
Parameters:
-
mapperFnFunctionFunction to map event payload
off
-
type -
handler
Removes the handler from the type channel.
This undoes the work of on.
OptionsManager.patch
-
options -
patch
Constructor method. Create OptionsManager from source dictionary with arguments overriden by patch dictionary.
Parameters:
-
optionsObjectOptions to be patched
-
patch...ObjectOptions to overwrite
Returns:
source
patch
-
options
Patch options with provided patches. Triggers change event on the object.
Parameters:
-
optionsObjectPatch options
Returns:
this
pluck
-
key
set
-
key -
value
Set key to value. Outputs change event if a value is overwritten.
Returns:
Updated OptionsManager
setOptions
()
Alias for patch
split
-
splitterFn
Parameters:
-
splitterFnFunctionSplitter function