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マーカーと ImageNode を AsyncTask で取得するサンプル
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| package com.xlsoft.kudanar | |
| import android.graphics.Bitmap | |
| import android.graphics.BitmapFactory | |
| import android.os.AsyncTask | |
| import android.os.Bundle | |
| import android.util.Log | |
| import eu.kudan.kudan.* | |
| import java.io.* | |
| import java.lang.Exception | |
| import java.net.HttpURLConnection | |
| import java.net.URL | |
| class MarkerActivity: ARActivity() { | |
| lateinit var imageTrackable: ARImageTrackable | |
| override fun onCreate(savedInstanceState: Bundle?) { | |
| super.onCreate(savedInstanceState) | |
| setContentView(R.layout.activity_marker) | |
| } | |
| override fun setup() { | |
| super.setup() | |
| // Image を Web から取得後に保存して、ARImageTrackable に指定する | |
| AddImageTrackableAsync().execute() | |
| // Image を Web から取得後に保存して、ARImageNode に指定する | |
| AddImageNodeAsync().execute() | |
| } | |
| inner class AddImageTrackableAsync: AsyncTask<Void, Void, Bitmap?>() { | |
| private val legoUrl = "https://kudanlicenses.z20.web.core.windows.net/lego.jpg" | |
| // バックグラウンドで行う処理 | |
| override fun doInBackground(vararg param: Void): Bitmap? { | |
| lateinit var bitmap: Bitmap | |
| val url = URL(legoUrl) | |
| val connection: HttpURLConnection = url.openConnection() as HttpURLConnection | |
| try { | |
| val inputStream: InputStream = connection.inputStream | |
| bitmap = BitmapFactory.decodeStream(inputStream) | |
| inputStream.close() | |
| } catch (ex: Exception) { | |
| Log.d(localClassName, ex.message!!) | |
| } | |
| finally { | |
| connection.disconnect() | |
| } | |
| return bitmap | |
| } | |
| // `doInBackground` が終わった後の処理 | |
| override fun onPostExecute(result: Bitmap?) { | |
| super.onPostExecute(result) | |
| // アプリ内部に画像ファイルとして保存 | |
| val file = File(applicationContext.filesDir, "dl_lego.jpg") // "/data/user/0/com.xlsoft.kudanar/files/dl_lego.jpg" | |
| val fileOutputStream = FileOutputStream(file) | |
| result?.let { | |
| try { | |
| it.compress(Bitmap.CompressFormat.JPEG, 90, fileOutputStream) | |
| addImageTrackable(file.path) | |
| } catch (ex: Exception) { | |
| Log.d(localClassName, ex.message!!) | |
| } finally { | |
| fileOutputStream.close() | |
| } | |
| } | |
| } | |
| private fun addImageTrackable(markerFilePath: String) { | |
| // ARImageTrackable をインスタンス化して画像を読み込み | |
| imageTrackable = ARImageTrackable() | |
| imageTrackable.loadFromPath(markerFilePath) | |
| // ARImageTracker のインスタンスを取得して初期化 | |
| val trackableManager = ARImageTracker.getInstance() | |
| trackableManager.initialise() | |
| // imageTrackable を ARImageTracker に追加 | |
| trackableManager.addTrackable(imageTrackable) | |
| } | |
| } | |
| inner class AddImageNodeAsync: AsyncTask<Void, Void, Bitmap?>() { | |
| private val cowUrl = "https://kudanlicenses.z20.web.core.windows.net/cow.png" | |
| // バックグラウンドで行う処理 | |
| override fun doInBackground(vararg param: Void): Bitmap? { | |
| lateinit var bitmap: Bitmap | |
| val url = URL(cowUrl) | |
| val connection: HttpURLConnection = url.openConnection() as HttpURLConnection | |
| try { | |
| val inputStream: InputStream = connection.inputStream | |
| bitmap = BitmapFactory.decodeStream(inputStream) | |
| inputStream.close() | |
| } catch (ex: Exception) { | |
| Log.d(localClassName, ex.message!!) | |
| } | |
| finally { | |
| connection.disconnect() | |
| } | |
| return bitmap | |
| } | |
| // `doInBackground` が終わった後の処理 | |
| override fun onPostExecute(result: Bitmap?) { | |
| super.onPostExecute(result) | |
| // アプリ内部に画像ファイルとして保存 | |
| val file = File(applicationContext.filesDir, "dl_cow.png") // "/data/user/0/com.xlsoft.kudanar/files/dl_cow.png" | |
| val fileOutputStream = FileOutputStream(file) | |
| result?.let { | |
| try { | |
| it.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream) | |
| addImageNode(file.path) | |
| } catch (ex: Exception) { | |
| Log.d(localClassName, ex.message!!) | |
| } finally { | |
| fileOutputStream.close() | |
| } | |
| } | |
| } | |
| private fun addImageNode(imageFilePath: String) { | |
| // ARImageNode を画像を指定して初期化 | |
| val imageNode = ARImageNode().initWithPath(imageFilePath) | |
| // imageNode のサイズを Trackable のサイズに合わせる | |
| val textureMaterial = imageNode.material as ARTextureMaterial | |
| val scale = imageTrackable.width / textureMaterial.texture.width | |
| imageNode.scaleByUniform(scale) | |
| // imageNode を trackable の world に追加 | |
| imageTrackable.world.addChild(imageNode) | |
| imageNode.visible = true | |
| } | |
| } | |
| } |
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