Question

我试图使SCNNode漂浮在飞机上然后放下。

使其浮动：

1541445238209   Marionette  DEBUG   Remote service is active
1541445238216   Marionette  DEBUG   Accepted connection 0 from 127.0.0.1:51066
1541445238238   Marionette  TRACE   0 -> [0,1,"newSession",{"acceptInsecureCerts":true,"browserName":"firefox","capabilities":{"desiredCapabilities":{"acceptInsecureCerts":true,"browserName":"firefox"}}}]
1541445238238   Marionette  TRACE   0 <- [1,1,{"error":"unknown command","message":"newSession","stacktrace":"WebDriverError@chrome://marionette/content/error.js:178: ... et@chrome://marionette/content/server.js:245:8\n_onJSONObjectReady/<@chrome://marionette/content/transport.js:490:9\n"},null]
Nov 05, 2018 3:13:58 PM org.openqa.selenium.remote.ErrorCodes toStatus
INFO: HTTP Status: '404' -> incorrect JSON status mapping for 'unknown error' (500 expected)
Exception in thread "main" org.openqa.selenium.WebDriverException: newSession
Build info: version: '3.8.1', revision: '6e95a6684b', time: '2017-12-01T19:05:14.666Z'
System info: host: 'Mac-mini-QE-Gustavo.local', ip: '192.168.1.73', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '1.8.0_131'
Driver info: driver.version: FirefoxDriver
remote stacktrace: stack backtrace:
   0:        0x10a952f64 - backtrace::backtrace::trace::h381bd5461b44fdf8
   1:        0x10a95331e - backtrace::capture::Backtrace::new::hbc1a12654c8fdba8
   2:        0x10a87f2ad - webdriver::error::WebDriverError::new::h482125abced50b28
   3:        0x10a88b11f - geckodriver::marionette::MarionetteSession::response::hc90b9b3424fb8183
   4:        0x10a89828b - geckodriver::marionette::MarionetteConnection::send_command::he82b7344fb11a670
   5:        0x10a889d38 - _$LT$geckodriver..marionette..MarionetteHandler$u20$as$u20$webdriver..server..WebDriverHandler$LT$geckodriver..marionette..GeckoExtensionRoute$GT$$GT$::handle_command::hf2128d0e5b79de64
   6:        0x10a829be8 - _$LT$webdriver..server..Dispatcher$LT$T$C$$u20$U$GT$$GT$::run::h03cbe31ad3bffc79
   7:        0x10a88004a - webdriver::server::start::_$u7b$$u7b$closure$u7d$$u7d$::h39b3aa32dda07c86
   8:        0x10a87434a - _$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::hdf61d260d4895572
   9:        0x10a7b8399 - std::panicking::try::do_call::h7b2d8948e219fc68
  10:        0x10ade901a - __rust_maybe_catch_panic
  11:        0x10a7b7eac - std::panicking::try::h91913aec898bbfef
  12:        0x10a7b53c5 - std::panic::catch_unwind::h3ab5cba0644d3617
  13:        0x10a7b717c - std::thread::Builder::spawn::_$u7b$$u7b$closure$u7d$$u7d$::h27cd13f9efbf7439
  14:        0x10a812686 - _$LT$F$u20$as$u20$alloc..boxed..FnBox$LT$A$GT$$GT$::call_box::hc399e39818c3f4d8
  15:        0x10ade51e4 - std::sys::imp::thread::Thread::new::thread_start::h36f6d218784ec55f
  16:     0x7fff58dfa660 - _pthread_body
  17:     0x7fff58dfa50c - _pthread_start
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at (RemoteWebDriver.java:142)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:120)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:98)
    at prueba.Prueba.main(Prueba.java:23)
/Users/macminidev2/Library/Caches/NetBeans/8.2/executor-snippets/run.xml:53: Java returned: 1
BUILD FAILED (total time: 4 seconds)

我知道这实际上不是浮动的，我只是改变其位置。

使其掉落：

#
# Line Splitting options
#

code_width            80            
# Unsigned Number
# Try to limit code width to N number of columns

ls_for_split_full     True  
# { False, True }
# Whether to fully split long 'for' statements at semi-colons.

ls_func_split_full    True
# { False, True }
# Whether to fully split long function protos/calls at commas.

ls_code_width         True
# { False, True }
# Whether to split lines as close to code_width as possible and ignore some groupings.

但是它并没有下降到最底端，floatingNode和平面之间有一个空格。为了解决这个问题，在删除后我必须做：

floatingNode.position.z += 0.4 // It's rotated π/2 over x axis
planeNode.addChildNode(floatingNode)
sceneView.scene.rootNode.addChildNode(planeNode)

我需要将PhysicsBody设置为nil，因为我想稍后再使其浮动。

是否有一种方法可以使SCNNode漂浮在另一个节点上而无需手动更改其位置？

如何让一个SCNNode悬浮于另一个之上？

0 个答案: