android 3d 旋转
2010-10-12 02:45:00 来源:本站整理}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
final float FromDegree = mFromDegree;
float degrees = FromDegree + (mToDegree - mFromDegree)
* interpolatedTime;
final float centerX = mCenterX;
final float centerY = mCenterY;
final Matrix matrix = t.getMatrix();
if (degrees < = -76.0f) {
degrees = -90.0f;
mCamera.save();
mCamera.rotateY(degrees);
mCamera.getMatrix(matrix);
mCamera.restore();
} else if(degrees >=76.0f){
degrees = 90.0f;
mCamera.save();
mCamera.rotateY(degrees);
mCamera.getMatrix(matrix);
mCamera.restore();
}else{
mCamera.save();
//这里很重要哦。
mCamera.translate(0, 0, centerX);
mCamera.rotateY(degrees);
mCamera.translate(0, 0, -centerX);
mCamera.getMatrix(matrix);
mCamera.restore();
}
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
}
有了这个类一切都会变得简单的,接着只要在activity中写两个Rotate3d的对象,让两个view,分别做这两个对象的animation就好了。( 原来就这么简单啊!无语)
Java代码
1. //下面两句很关键哦,呵呵,心照不宣。
2. Rotate3d leftAnimation = new Rotate3d(-0, -90, 0, 0, mCenterX, mCenterY);
3. Rotate3d rightAnimation = new Rotate3d(-0+90, -90+90, 0.0f, 0.0f, mCenterX, mCenterY);
4.
5. leftAnimation.setFillAfter(true);
6. leftAnimation.setDuration(1000);
7. rightAnimation.setFillAfter(true);
8. rightAnimation.setDuration(1000);
9.
10. mImageView1.startAnimation(leftAnimation);
11. mImageView2.startAnimation(rightAnimation);
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