質問編集履歴
3
付けたし
test
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@@ -23,3 +23,545 @@
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カクカクな動きを改善する方法
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[リンク内容](https://teratail.com/questions/36609)
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桜の花びらが舞っているプログラム
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```ここに言語を入力
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コード
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public class MainActivity extends Activity{
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int sakuraCount = 50; //表示する桜の枚数
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Sakura sakura[] = new Sakura[sakuraCount];
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CanvasView canvasview;
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/**
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* メインメソッド
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*/
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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canvasview = new CanvasView(this);
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setContentView(canvasview);
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sakuraCreate();
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}
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/**
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* 桜インスタンス化・スレッド開始メソッド
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*/
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public void sakuraCreate(){
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Random rnd = new Random();
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for(int i = 0; i < sakuraCount; i++){
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sakura[i] =
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new Sakura( (Math.random() * 800) - 100, 0,
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rnd.nextInt(11) + 5, rnd.nextInt(100)*100,
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Math.random() /*+ 1*/);
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/*このクラスのcanvasviewがSakuraクラスのものと同値であると示す*/
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sakura[i].setCanvasView(canvasview);
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sakura[i].start();
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}
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/*このクラスのsakuraCountとSakuraがCanvasViewクラスのものと同値であると示す*/
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canvasview.setSakuraCountAndSakura(sakuraCount, sakura);
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}
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}
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```
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```ここに言語を入力
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コード
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public class CanvasView extends SurfaceView
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implements SurfaceHolder.Callback, Runnable{
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int sakuraCount;
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Sakura sakura[] = new Sakura[sakuraCount];
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SurfaceHolder sHolder;
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Thread thread;
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boolean trueOrFalse;
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/**
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* CanvasViewクラスのコンストラクタ
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*/
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public CanvasView(Context context){
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super(context);
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sHolder = getHolder();
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sHolder.addCallback(this);
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}
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/**
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* sakuraCountとsakura[]同値メソッド
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*/
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public void setSakuraCountAndSakura(int sakuraCount, Sakura sakura[]){
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this.sakuraCount = sakuraCount;
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this.sakura =sakura;
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}
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/**
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* SurfaceViewが生成されたときに呼ばれるメソッド
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*/
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@Override
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public void surfaceCreated(SurfaceHolder sHolder){
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trueOrFalse = true;
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thread = new Thread(this);
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}
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/**
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* SurfaceViewの状態が変更されたときと
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* 生成されたときも呼ばれるメソッド
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*/
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@Override
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public void surfaceChanged(SurfaceHolder holder,
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int format, int width, int height){
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thread.start();
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}
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/**
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* SurfaceViewが破棄されるときに呼ばれるメソッド
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*/
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@Override
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public void surfaceDestroyed(SurfaceHolder holder){
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trueOrFalse = false;
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while(thread != null && thread.isAlive()){
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thread = null;
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};
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}
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/**
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* run(描画)メソッド
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*/
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public void run(){
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while (trueOrFalse == true){
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Canvas canvas = sHolder.lockCanvas();
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if(canvas != null){
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canvas.drawColor(Color.WHITE);
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Path path = new Path();
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for(int i = 0; i < sakuraCount; i++){
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path.moveTo(sakura[i].Screen_vData[0][0], sakura[i].Screen_vData[0][1]);
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path.quadTo(sakura[i].Screen_cData[0][0], sakura[i].Screen_cData[0][1], sakura[i].Screen_vData[1][0], sakura[i].Screen_vData[1][1]);
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path.quadTo(sakura[i].Screen_cData[1][0], sakura[i].Screen_cData[1][1], sakura[i].Screen_vData[0][0], sakura[i].Screen_vData[0][1]);
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canvas.drawPath(path, sakura[i].paint);
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}
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}
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//Canvasのロックを解除する
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sHolder.unlockCanvasAndPost(canvas);
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}
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}
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}
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```
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```ここに言語を入力
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コード
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public class Sakura extends Thread{
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CanvasView canvasview;
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Paint paint = new Paint(); //Paintクラスをインスタンスごとに管理
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int Vertex_data[][] = { { 1, 1, 0}, //点P0
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{ -1, -1, 0} }; //点P1
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//頂点データ
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float Screen_vData[][] = new float[2][3]; //表示頂点データ
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int Control_data[][] = { {-1, 1, 0}, //点P0から点P1
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{ 1, -1, 0} }; //点P1から点P0
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//曲線描くときのコントロールデータ
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float Screen_cData[][] = new float[2][3]; //表示コントロールデータ
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double pointX; //表示位置のx座標
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double pointY; //表示位置のy座標
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int scale; //描画倍数
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int time; //開始時間
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double distanceY; //移動距離
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double phi; //x軸周りの回転角
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double theta; //y軸周りの回転角
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int select; //左右判定
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363
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Random rnd = new Random();
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370
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371
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372
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/*Sakuraクラスのコンストラクタ*/
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375
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public Sakura( double pointX, double pointY,
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int scale, int time,
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378
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379
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double distanceY){
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380
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381
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this.pointX = pointX;
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382
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this.pointY = pointY;
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385
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this.scale = scale;
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386
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387
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this.time = time;
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388
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389
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this.distanceY = distanceY;
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391
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392
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393
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phi = 0;
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394
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395
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theta = 0;
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397
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398
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399
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//左右どちらに動くか判定
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400
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401
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select = rnd.nextInt(2) + 1;
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402
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403
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paint.setColor(Color.MAGENTA ); //色設定
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406
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paint.setStrokeWidth(1); //線の太さ設定
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408
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paint.setAntiAlias(true); //滑らかに書く
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410
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paint.setStyle(Paint.Style.FILL); //塗りつぶし
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412
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}
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414
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415
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417
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418
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419
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/*runメソッド・時間繰り返し処理(startメソッドの後に呼び出される)*/
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420
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421
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public void run(){
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422
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|
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423
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//開始時間設定
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424
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425
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try{
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426
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427
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Thread.sleep(time);
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428
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429
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}
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430
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431
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catch(InterruptedException e){
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432
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433
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}
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434
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435
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436
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437
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for(int i = 0; i < 100000; i++){
|
|
438
|
+
|
|
439
|
+
try{
|
|
440
|
+
|
|
441
|
+
Thread.sleep(5);
|
|
442
|
+
|
|
443
|
+
}
|
|
444
|
+
|
|
445
|
+
catch(InterruptedException e){
|
|
446
|
+
|
|
447
|
+
}
|
|
448
|
+
|
|
449
|
+
|
|
450
|
+
|
|
451
|
+
if(select == 1){
|
|
452
|
+
|
|
453
|
+
pointX += (Math.random() * 1);
|
|
454
|
+
|
|
455
|
+
}
|
|
456
|
+
|
|
457
|
+
else{
|
|
458
|
+
|
|
459
|
+
pointX -= (Math.random() * 1);
|
|
460
|
+
|
|
461
|
+
}
|
|
462
|
+
|
|
463
|
+
|
|
464
|
+
|
|
465
|
+
phi += Math.PI / (rnd.nextInt(101) + 30); //角度変更処理
|
|
466
|
+
|
|
467
|
+
theta += Math.PI / (rnd.nextInt(101) + 30); //角度変更処理
|
|
468
|
+
|
|
469
|
+
pointY += distanceY; //落下処理
|
|
470
|
+
|
|
471
|
+
|
|
472
|
+
|
|
473
|
+
setRotPosition();
|
|
474
|
+
|
|
475
|
+
}
|
|
476
|
+
|
|
477
|
+
}
|
|
478
|
+
|
|
479
|
+
|
|
480
|
+
|
|
481
|
+
|
|
482
|
+
|
|
483
|
+
/*回転後、座標を更新するメソッド*/
|
|
484
|
+
|
|
485
|
+
public void setRotPosition(){
|
|
486
|
+
|
|
487
|
+
//回転後の頂点座標
|
|
488
|
+
|
|
489
|
+
for(int i = 0; i < Vertex_data.length; i++){
|
|
490
|
+
|
|
491
|
+
double rvx = Vertex_data[i][0] * Math.cos(theta) +
|
|
492
|
+
|
|
493
|
+
Vertex_data[i][2] * Math.sin(theta);
|
|
494
|
+
|
|
495
|
+
double rvy = Vertex_data[i][0] * Math.sin(phi) * Math.sin(theta) +
|
|
496
|
+
|
|
497
|
+
Vertex_data[i][1] * Math.cos(phi) -
|
|
498
|
+
|
|
499
|
+
Vertex_data[i][2] * Math.cos(phi) * Math.cos(theta);
|
|
500
|
+
|
|
501
|
+
double rvz = - Vertex_data[i][0] * Math.cos(phi) * Math.sin(theta) +
|
|
502
|
+
|
|
503
|
+
Vertex_data[i][1] * Math.sin(phi) +
|
|
504
|
+
|
|
505
|
+
Vertex_data[i][2] * Math.cos(phi) * Math.cos(theta);
|
|
506
|
+
|
|
507
|
+
|
|
508
|
+
|
|
509
|
+
Screen_vData[i][0] = (float)(pointX + (rvx * scale));
|
|
510
|
+
|
|
511
|
+
Screen_vData[i][1] = (float)(pointY - (rvy * scale));
|
|
512
|
+
|
|
513
|
+
Screen_vData[i][2] = (float)(rvz * scale);
|
|
514
|
+
|
|
515
|
+
}
|
|
516
|
+
|
|
517
|
+
|
|
518
|
+
|
|
519
|
+
//回転後のコントロールデータ
|
|
520
|
+
|
|
521
|
+
for(int i = 0; i < Control_data.length; i++){
|
|
522
|
+
|
|
523
|
+
double rcx = Control_data[i][0] * Math.cos(theta) +
|
|
524
|
+
|
|
525
|
+
Control_data[i][2] * Math.sin(theta);
|
|
526
|
+
|
|
527
|
+
double rcy = Control_data[i][0] * Math.sin(phi) * Math.sin(theta) +
|
|
528
|
+
|
|
529
|
+
Control_data[i][1] * Math.cos(phi) -
|
|
530
|
+
|
|
531
|
+
Control_data[i][2] * Math.cos(phi) * Math.cos(theta);
|
|
532
|
+
|
|
533
|
+
double rcz = - Control_data[i][0] * Math.cos(phi) * Math.sin(theta) +
|
|
534
|
+
|
|
535
|
+
Control_data[i][1] * Math.sin(phi) +
|
|
536
|
+
|
|
537
|
+
Control_data[i][2] * Math.cos(phi) * Math.cos(theta);
|
|
538
|
+
|
|
539
|
+
|
|
540
|
+
|
|
541
|
+
Screen_cData[i][0] = (float)(pointX + (rcx * scale));
|
|
542
|
+
|
|
543
|
+
Screen_cData[i][1] = (float)(pointY - (rcy * scale));
|
|
544
|
+
|
|
545
|
+
Screen_cData[i][2] = (float)(rcz * scale);
|
|
546
|
+
|
|
547
|
+
}
|
|
548
|
+
|
|
549
|
+
}
|
|
550
|
+
|
|
551
|
+
|
|
552
|
+
|
|
553
|
+
|
|
554
|
+
|
|
555
|
+
/*canvasview同値メソッド*/
|
|
556
|
+
|
|
557
|
+
public void setCanvasView(CanvasView canvasview) {
|
|
558
|
+
|
|
559
|
+
this.canvasview = canvasview;
|
|
560
|
+
|
|
561
|
+
}
|
|
562
|
+
|
|
563
|
+
|
|
564
|
+
|
|
565
|
+
}
|
|
566
|
+
|
|
567
|
+
```
|
2
手直し
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -22,4 +22,4 @@
|
|
|
22
22
|
|
|
23
23
|
カクカクな動きを改善する方法
|
|
24
24
|
|
|
25
|
-
https://teratail.com/questions/36609
|
|
25
|
+
[リンク内容](https://teratail.com/questions/36609)
|
1
付けたし
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -13,3 +13,13 @@
|
|
|
13
13
|
|
|
14
14
|
|
|
15
15
|
よろしくお願いします。
|
|
16
|
+
|
|
17
|
+
|
|
18
|
+
|
|
19
|
+
追記
|
|
20
|
+
|
|
21
|
+
前回の質問
|
|
22
|
+
|
|
23
|
+
カクカクな動きを改善する方法
|
|
24
|
+
|
|
25
|
+
https://teratail.com/questions/36609
|