Android Canvas로 회오리모양 그리기

package com.bhcom.exercise;

import java.util.Random;

import android.graphics.Canvas;

import android.util.Log;

import android.view.SurfaceHolder;

import android.app.Activity;

import android.os.Bundle;

import android.view.Window;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Color;

import android.graphics.Matrix;

import android.graphics.Paint;

import android.graphics.Rect;

import android.view.MotionEvent;

import android.view.SurfaceView;

public class GraphicMain extends Activity {

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(new Panel(this));

}

}

//////////

class Panel extends SurfaceView implements SurfaceHolder.Callback {

private int mode = 0;

private Bitmap mBitmap;

private ViewThread mThread;

private int mX;

private int mY;

private int meX;

private int meY;

private int rad; //my variable for radius and movable x and ys

public Panel(Context context) {

super(context);

mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.icon);

getHolder().addCallback(this);

mThread = new ViewThread(this);

}

public void doDraw(Canvas canvas) {

/*because of the thread this is looping like draw() in Processing*/

//simple way to make circle grow then go small again

//최초시작시 아무것도 하지 않음.

if (mY == 0 || mX == 0) {

return;

}

if (mode == 1) {

rad--;

}else {

rad++;

}

//background black

Paint paint = new Paint();

Random rnd = new Random();

// paint.setARGB(255, rnd.nextInt(255), rnd.nextInt(255), rnd.nextInt(255));

paint.setColor(Color.RED);

// paint.setFlags(Paint.ANTI_ALIAS_FLAG);

paint.setStrokeWidth(5);

Log.i("1", "rad : "+rad);

canvas.rotate(rad*8, mX, mY);

canvas.drawPoint(mX+(rad/4), mY+rad/4, paint);

}

@Override

public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

// TODO Auto-generated method stub

}

@Override

public void surfaceCreated(SurfaceHolder holder) {

mX = 0;

mY = 0;

if (!mThread.isAlive()) {

mThread = new ViewThread(this);

mThread.setRunning(true);

mThread.start();

}

}

@Override

public void surfaceDestroyed(SurfaceHolder holder) {

if (mThread.isAlive()) {

mThread.setRunning(false);

}

}

@Override

public boolean onTouchEvent(MotionEvent event) {

if (mode == 1) {

mode = 0;

}else {

mode = 1;

}

rad = 0;

mX = (int) event.getX() - mBitmap.getWidth() / 2;

mY = (int) event.getY() - mBitmap.getHeight() / 2;

return super.onTouchEvent(event);

}

}

/////////

class ViewThread extends Thread {

private Panel mPanel;

private SurfaceHolder mHolder;

private boolean mRun = false;

public ViewThread(Panel panel) {

mPanel = panel;

mHolder = mPanel.getHolder();

}

public void setRunning(boolean run) {

mRun = run;

}

@Override

public void run() {

Canvas canvas = null;

while (mRun) {

canvas = mHolder.lockCanvas();

if (canvas != null) {

mPanel.doDraw(canvas);

mHolder.unlockCanvasAndPost(canvas);

}

}

}

}

아.. 돌아가는 소스 라인으로 하고싶었는데 할줄 몰라서 결국엔 포인트로..... 쳇..