Event Gyroscope

Event Gyroscope

វាជា event ដែលមាននៃ gyroscope ដែលអាស្រ័យលើ device’s hardware capabilities

ចំណាំះ នៅលើ IOS ត្រូវបញ្ចូលវា UIRequiredDeviceCapabilities

ខាងក្រោមនេះជា Properties របស់វា

event.name សំរាប់ gyroscope events នេះជា property ត្រូវបានបញ្ចូលទៅជា gyroscope

សូមមើលកូដះ

-- Called when a new gyroscope measurement has been received.

local function onGyroscopeDataReceived( event )

    print( "Gyroscope name: " .. event.name )

end

-- Set up the above function to receive gyroscope events if the sensor exists.

if system.hasEventSource( "gyroscope" ) then

    Runtime:addEventListener( "gyroscope", onGyroscopeDataReceived )

end

  

event.yRotation

ប្រើសំរាប់ rotate rate ជុំវិញ device’s y axis នៅក្នង​radian per second

ចំណាំះ អាចបំលែង radian ទៅ degree តាមរយះ formula: degree = radins * (180/pi)

សូមមើលកូដះ

-- Called when a new gyroscope measurement has been received.

print ("this is me")

local function onGyroscopeDataReceived( event )

    -- Calculate approximate rotation traveled via deltaTime.

    -- Remember that rotation rate is in radians per second.

    local deltaRadians = event.yRotation * event.deltaTime

    local deltaDegrees = deltaRadians * (180 / math.pi)

end

-- Set up the above function to receive gyroscope events if the sensor exists.

if system.hasEventSource( "gyroscope" ) then

    Runtime:addEventListener( "gyroscope", onGyroscopeDataReceived )

end

event.xRotation

ប្រើសំរាប់ rotate rate ជុំវិញ device’s x axis នៅក្នង​radian per second

ចំណាំះ អាចបំលែង radian ទៅ degree តាមរយះ formula: degree = radins * (180/pi)

សូមមើលកូដះ

-- Called when a new gyroscope measurement has been received.

print ("this is me")

local function onGyroscopeDataReceived( event )

    -- Calculate approximate rotation traveled via deltaTime.

    -- Remember that rotation rate is in radians per second.

    local deltaRadians = event.yRotation * event.deltaTime

    local deltaDegrees = deltaRadians * (180 / math.pi)

end

-- Set up the above function to receive gyroscope events if the sensor exists.

if system.hasEventSource( "gyroscope" ) then

    Runtime:addEventListener( "gyroscope", onGyroscopeDataReceived )

 

end

event.yRotation

ប្រើសំរាប់ rotate rate ជុំវិញ device’s y axis នៅក្នង​radian per second

ចំណាំះ អាចបំលែង radian ទៅ degree តាមរយះ formula: degree = radins * (180/pi)

សូមមើលកូដះ

-- Called when a new gyroscope measurement has been received.

print ("this is me")

local function onGyroscopeDataReceived( event )

    -- Calculate approximate rotation traveled via deltaTime.

    -- Remember that rotation rate is in radians per second.

    local deltaRadians = event.yRotation * event.deltaTime

    local deltaDegrees = deltaRadians * (180 / math.pi)

end

-- Set up the above function to receive gyroscope events if the sensor exists.

if system.hasEventSource( "gyroscope" ) then

    Runtime:addEventListener( "gyroscope", onGyroscopeDataReceived )

 

end

event.zRotation

ប្រើសំរាប់ rotate rate ជុំវិញ device’s z axis នៅក្នង​radian per second

ចំណាំះ អាចបំលែង radian ទៅ degree តាមរយះ formula: degree = radins * (180/pi)

សូមមើលកូដះ

-- Called when a new gyroscope measurement has been received.

print ("this is me")

local function onGyroscopeDataReceived( event )

    -- Calculate approximate rotation traveled via deltaTime.

    -- Remember that rotation rate is in radians per second.

    local deltaRadians = event.yRotation * event.deltaTime

    local deltaDegrees = deltaRadians * (180 / math.pi)

end

-- Set up the above function to receive gyroscope events if the sensor exists.

if system.hasEventSource( "gyroscope" ) then

    Runtime:addEventListener( "gyroscope", onGyroscopeDataReceived )

end

event.deltaTime វាជាពេលវេលាគិតជា វិនាទីចាប់តាំងពី last gyroscope event

ចំណាំះ សំរាប់រង្វាស់ Gyroscope នឹងមិនចំលង់នៅម៉ោងពិតប្រាកដទេដោយសារ system.setGyroscopeInterval()function។ វាមានន័យថាអ្នកមិនអា​ច assume ថាវានឹង configured interval នៃ 10Hz ex: 100milliseconds ដែលនឹង yield measurements record ដូចគ្នានឹង 100 milliseconds apart។ នេះជាដែនកំនត់របស់ operating system នៅលើ IOS & Android។ សំរាប់ event.deltaTime ផ្តល់ក្នុងការជួយធ្វើឪ្យវា rotational calculations ជាពេលដែលត្រឹមត្រូវ

អាចប្រើ event.deltaTime ក្នងការគិតនៅចំងាយវិលប្រហាក់ប្រហែលតាំងពីLast gyroscope measurement ជាមួយនឹងសមីការខាងក្រោមនេះ
delta radians = rotation rate * delta time

សូមចំណាំថា នេះជាតំលៃប្រហែលពីព្រោះ device មិនត្រូវបាន rotated ជា constant speed តាំងពីរង្វាស់ last gyroscope។ វាមានន័យថា the summed distance over time will grow in error។ ការបង្កើននៅរង្វាស់វានឹង​ update interval តាមរយះ system.setGyroscopeInterval() function ដែលនឹងបន្ថយការ error

សូមមើលកូដះ

-- Called when a new gyroscope measurement has been received.

local function onGyroscopeDataReceived( event )

    -- Calculate approximate rotation traveled via deltaTime.

    -- Remember that rotation rate is in radians per second.

    local deltaRadians = event.zRotation * event.deltaTime

    local deltaDegrees = deltaRadians * (180 / math.pi)

end

-- Set up the above function to receive gyroscope events if the sensor exists.

if system.hasEventSource( "gyroscope" ) then

    Runtime:addEventListener( "gyroscope", onGyroscopeDataReceived )

end