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/*
 * 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.camera.unittest;

import com.android.camera.Camera;
import com.android.camera.Util;

import android.graphics.Matrix;
import android.graphics.Rect;
import android.graphics.RectF;
import android.test.suitebuilder.annotation.SmallTest;

import junit.framework.TestCase;

@SmallTest
public class CameraTest extends TestCase {
    public void testRoundOrientation() {
        assertEquals(0, Camera.roundOrientation(0));
        assertEquals(0, Camera.roundOrientation(0 + 44));
        assertEquals(90, Camera.roundOrientation(0 + 45));
        assertEquals(90, Camera.roundOrientation(90));
        assertEquals(90, Camera.roundOrientation(90 + 44));
        assertEquals(180, Camera.roundOrientation(90 + 45));
        assertEquals(180, Camera.roundOrientation(180));
        assertEquals(180, Camera.roundOrientation(180 + 44));
        assertEquals(270, Camera.roundOrientation(180 + 45));
        assertEquals(270, Camera.roundOrientation(270));
        assertEquals(270, Camera.roundOrientation(270 + 44));
        assertEquals(0, Camera.roundOrientation(270 + 45));
        assertEquals(0, Camera.roundOrientation(359));
    }

    public void testConvertToFocusArea() {
        Rect rect = new Rect();
        Camera.convertToFocusArea(0, 0, 100, 100, 800, 480, rect);
        assertEquals(new Rect(-1000, -1000, -750, -583), rect);
        Camera.convertToFocusArea(0, 0, 400, 240, 800, 480, rect);
        assertEquals(new Rect(-1000, -1000, 0, 0), rect);
        Camera.convertToFocusArea(400, 240, 400, 240, 800, 480, rect);
        assertEquals(new Rect(0, 0, 1000, 1000), rect);
        Camera.convertToFocusArea(200, 120, 400, 240, 800, 480, rect);
        assertEquals(new Rect(-500, -500, 500, 500), rect);
        Camera.convertToFocusArea(0, 0, 800, 480, 800, 480, rect);
        assertEquals(new Rect(-1000, -1000, 1000, 1000), rect);
        Camera.convertToFocusArea(860, 620, 100, 100, 960, 720, rect);
        assertEquals(new Rect(792, 722, 1000, 1000), rect);
    }

    public void testPrepareMatrix() {
        Matrix matrix = new Matrix();
        float[] points;
        int[] expected;

        Util.prepareMatrix(matrix, false, 0, 800, 480);
        points = new float[] {-1000, -1000, 0, 0, 1000, 1000, 0, 1000, -750, 250};
        expected = new int[] {0, 0, 400, 240, 800, 480, 400, 480, 100, 300};
        matrix.mapPoints(points);
        assertEquals(expected, points);

        Util.prepareMatrix(matrix, false, 90, 800, 480);
        points = new float[] {-1000, -1000,   0,   0, 1000, 1000, 0, 1000, -750, 250};
        expected = new int[] {800, 0, 400, 240, 0, 480, 0, 240, 300, 60};
        matrix.mapPoints(points);
        assertEquals(expected, points);

        Util.prepareMatrix(matrix, false, 180, 800, 480);
        points = new float[] {-1000, -1000, 0, 0, 1000, 1000, 0, 1000, -750, 250};
        expected = new int[] {800, 480, 400, 240, 0, 0, 400, 0, 700, 180};
        matrix.mapPoints(points);
        assertEquals(expected, points);

        Util.prepareMatrix(matrix, true, 180, 800, 480);
        points = new float[] {-1000, -1000, 0, 0, 1000, 1000, 0, 1000, -750, 250};
        expected = new int[] {0, 480, 400, 240, 800, 0, 400, 0, 100, 180};
        matrix.mapPoints(points);
        assertEquals(expected, points);
    }

    private void assertEquals(int expected[], float[] actual) {
        for (int i = 0; i < expected.length; i++) {
            assertEquals("Array index " + i + " mismatch", expected[i], Math.round(actual[i]));
        }
    }
}