side9/anim/Flip3dAnimation.java

package dk.thoerup.side9.anim;

import android.graphics.Camera;
import android.graphics.Matrix;
import android.view.animation.Animation;
import android.view.animation.Transformation;

public class Flip3dAnimation  extends Animation {
        private final float mFromDegrees;
        private final float mToDegrees;
        private final float mCenterX;
        private final float mCenterY;
        private Camera mCamera;

        public Flip3dAnimation(float fromDegrees, float toDegrees, float centerX, float centerY) {
                mFromDegrees = fromDegrees;
                mToDegrees = toDegrees;
                mCenterX = centerX;
                mCenterY = centerY;
        }

        @Override
        public void initialize(int width, int height, int parentWidth, int parentHeight) {
                super.initialize(width, height, parentWidth, parentHeight);
                mCamera = new Camera();
        }

        @Override
        protected void applyTransformation(float interpolatedTime, Transformation t) {
                final float fromDegrees = mFromDegrees;
                float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);

                final float centerX = mCenterX;
                final float centerY = mCenterY;
                final Camera camera = mCamera;

                final Matrix matrix = t.getMatrix();

                camera.save();

                camera.rotateY(degrees);

                camera.getMatrix(matrix);
                camera.restore();

                matrix.preTranslate(-centerX, -centerY);
                matrix.postTranslate(centerX, centerY);

        }

}
1	torben	1217	package dk.thoerup.side9.anim;
2
3			import android.graphics.Camera;
4			import android.graphics.Matrix;
5			import android.view.animation.Animation;
6			import android.view.animation.Transformation;
7
8			public class Flip3dAnimation extends Animation {
9			private final float mFromDegrees;
10			private final float mToDegrees;
11			private final float mCenterX;
12			private final float mCenterY;
13			private Camera mCamera;
14
15			public Flip3dAnimation(float fromDegrees, float toDegrees, float centerX, float centerY) {
16			mFromDegrees = fromDegrees;
17			mToDegrees = toDegrees;
18			mCenterX = centerX;
19			mCenterY = centerY;
20			}
21
22			@Override
23			public void initialize(int width, int height, int parentWidth, int parentHeight) {
24			super.initialize(width, height, parentWidth, parentHeight);
25			mCamera = new Camera();
26			}
27
28			@Override
29			protected void applyTransformation(float interpolatedTime, Transformation t) {
30			final float fromDegrees = mFromDegrees;
31			float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);
32
33			final float centerX = mCenterX;
34			final float centerY = mCenterY;
35			final Camera camera = mCamera;
36
37			final Matrix matrix = t.getMatrix();
38
39			camera.save();
40
41			camera.rotateY(degrees);
42
43			camera.getMatrix(matrix);
44			camera.restore();
45
46			matrix.preTranslate(-centerX, -centerY);
47			matrix.postTranslate(centerX, centerY);
48
49			}
50
51			}