| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.test.hwui; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Camera; |
| import android.graphics.Canvas; |
| import android.graphics.Matrix; |
| import android.os.Bundle; |
| import android.view.View; |
| |
| @SuppressWarnings({"UnusedDeclaration"}) |
| public class Transform3dActivity extends Activity { |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| final Transform3dView view = new Transform3dView(this); |
| setContentView(view); |
| } |
| |
| static class Transform3dView extends View { |
| private final Bitmap mBitmap1; |
| private Camera mCamera; |
| private Matrix mMatrix; |
| |
| Transform3dView(Context c) { |
| super(c); |
| |
| mBitmap1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1); |
| mCamera = new Camera(); |
| mMatrix = new Matrix(); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| super.onDraw(canvas); |
| |
| canvas.drawARGB(255, 255, 255, 255); |
| |
| final float centerX = getWidth() / 2.0f - mBitmap1.getWidth() / 2.0f; |
| final float centerY = getHeight() / 2.0f - mBitmap1.getHeight() / 2.0f; |
| final Camera camera = mCamera; |
| |
| final Matrix matrix = mMatrix; |
| |
| rotate(centerX, centerY, camera, matrix, 32.0f); |
| drawBitmap(canvas, centerX, centerY, 0.0f, matrix); |
| |
| rotate(centerX, centerY, camera, matrix, 12.0f); |
| drawBitmap(canvas, centerX, centerY, -mBitmap1.getWidth(), matrix); |
| |
| rotate(centerX, centerY, camera, matrix, 52.0f); |
| drawBitmap(canvas, centerX, centerY, mBitmap1.getWidth(), matrix); |
| |
| rotate(centerX, centerY, camera, matrix, 122.0f); |
| drawBitmap(canvas, centerX, centerY, mBitmap1.getWidth() * 2.0f, matrix); |
| |
| } |
| |
| private void drawBitmap(Canvas canvas, float centerX, float centerY, float offset, |
| Matrix matrix) { |
| canvas.save(); |
| canvas.translate(offset, 0.0f); |
| canvas.concat(matrix); |
| canvas.drawBitmap(mBitmap1, centerX, centerY, null); |
| canvas.restore(); |
| } |
| |
| private void rotate(float centerX, float centerY, Camera camera, |
| Matrix matrix, float angle) { |
| camera.save(); |
| camera.rotateY(angle); |
| camera.getMatrix(matrix); |
| camera.restore(); |
| |
| matrix.preTranslate(-centerX, -centerY); |
| matrix.postTranslate(centerX, centerY); |
| } |
| } |
| } |