Android 3d 翻页效果(andorid的源码)

源码之3D翻转效果

通过此方法调用：applyRotation(x,y);

x和y是翻转角度

void applyRotation(float start, float end) {
		final float centerY = mContainer.getWidth();
		final float centerX = mContainer.getHeight();
		Rotate3dAnimation rotation = new Rotate3dAnimation(start, end, centerX, centerY, 310.0f, true);
		rotation.setDuration(500);
		rotation.setFillAfter(true);
		rotation.setInterpolator(new AccelerateInterpolator());
		rotation.setAnimationListener(new DisplayNextView());
		mContainer.startAnimation(rotation);
	}


	private final class DisplayNextView implements Animation.AnimationListener {


		public void onAnimationStart(Animation animation) {
		}


		public void onAnimationEnd(Animation animation) {
			mContainer.post(new SwapViews());
		}


		public void onAnimationRepeat(Animation animation) {
		}
	}


	private final class SwapViews implements Runnable {


		public void run() {
			final float centerX = mContainer.getWidth();
			final float centerY = mContainer.getHeight();
			Rotate3dAnimation rotation;
			rotation = new Rotate3dAnimation(90, 360, centerX, centerY, 310.0f, false);
			setAdapter();
			rotation.setDuration(1000);
			rotation.setFillAfter(true);
			rotation.setInterpolator(new DecelerateInterpolator());


			mContainer.startAnimation(rotation);
		}
	}

package com.cyberstar.pad.util;

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

/**
 * An animation that rotates the view on the Y axis between two specified angles.
 * This animation also adds a translation on the Z axis (depth) to improve the effect.
 */
public class Rotate3dAnimation extends Animation {
    private final float mFromDegrees;
    private final float mToDegrees;
    private final float mCenterX;
    private final float mCenterY;
    private final float mDepthZ;
    private final boolean mReverse;
    private Camera mCamera;

    /**
     * Creates a new 3D rotation on the Y axis. The rotation is defined by its
     * start angle and its end angle. Both angles are in degrees. The rotation
     * is performed around a center point on the 2D space, definied by a pair
     * of X and Y coordinates, called centerX and centerY. When the animation
     * starts, a translation on the Z axis (depth) is performed. The length
     * of the translation can be specified, as well as whether the translation
     * should be reversed in time.
     *
     * @param fromDegrees the start angle of the 3D rotation
     * @param toDegrees the end angle of the 3D rotation
     * @param centerX the X center of the 3D rotation
     * @param centerY the Y center of the 3D rotation
     * @param reverse true if the translation should be reversed, false otherwise
     */
    public Rotate3dAnimation(float fromDegrees, float toDegrees,
            float centerX, float centerY, float depthZ, boolean reverse) {
        mFromDegrees = fromDegrees;
        mToDegrees = toDegrees;
        mCenterX = centerX;
        mCenterY = centerY;
        mDepthZ = depthZ;
        mReverse = reverse;
    }

    @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();
        if (mReverse) {
            camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);
        } else {
            camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));
        }
        camera.rotateY(degrees);
        camera.getMatrix(matrix);
        camera.restore();

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