下面列出了android.graphics.Camera#rotateY ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* 根据角度绘制图标的类
* @param canvas 画布
* @param fraction 完成时间百分比
* @param icon 图标
* @param width view宽度
* @param height view高度
*/
private void drawIconOne(Canvas canvas, float fraction, Bitmap icon, int width, int height) {
Camera camera = new Camera();
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
canvas.save();
int centerX = width / 2;
int centerY = height / 2 - 200;
int x = centerX - icon.getWidth()/2;
int y = centerY - icon.getHeight()/2;
Matrix matrix = new Matrix();
matrix.postScale(1.7f, 1.7f, centerX, centerY);
canvas.concat(matrix);
canvas.clipRect(x, y, x + icon.getWidth() * fraction * 0.5f, y + icon.getHeight() * fraction * 0.5f);
canvas.translate(centerX, centerY);
camera.save();
camera.rotateX(180);
camera.rotateY(-180);
camera.applyToCanvas(canvas);
camera.restore();
canvas.translate(-centerX, -centerY);
canvas.drawBitmap(icon, x, y, paint);
canvas.restore();
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
final float fromDegrees = m_fromDegree;
float degrees = fromDegrees + ((m_toDegree - fromDegrees) * interpolatedTime);
final float centerX = m_centerX;
final float centerY = m_centerY;
final Camera camera = m_camera;
final Matrix matrix = t.getMatrix();
camera.save();
if (m_reverse) {
camera.translate(0.0f, 0.0f, m_depthZ * interpolatedTime);
} else {
camera.translate(0.0f, 0.0f, m_depthZ * (1.0f - interpolatedTime));
}
camera.rotateY(degrees);
camera.getMatrix(matrix);
camera.restore();
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
/**
* 根据角度绘制图标的类
* @param canvas 画布
* @param fraction 完成时间百分比
* @param icon 图标
* @param width view宽度
* @param height view高度
*/
private void drawIconOne(Canvas canvas, float fraction, Bitmap icon, int width, int height) {
Camera camera = new Camera();
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
canvas.save();
int centerX = width / 2;
int centerY = height / 2 - 200;
int x = centerX - icon.getWidth()/2;
int y = centerY - icon.getHeight()/2;
Matrix matrix = new Matrix();
matrix.postScale(1.7f, 1.7f, centerX, centerY);
canvas.concat(matrix);
canvas.clipRect(x, y, x + icon.getWidth() * fraction * 0.5f, y + icon.getHeight() * fraction * 0.5f);
canvas.translate(centerX, centerY);
camera.save();
camera.rotateX(180);
camera.rotateY(-180);
camera.applyToCanvas(canvas);
camera.restore();
canvas.translate(-centerX, -centerY);
canvas.drawBitmap(icon, x, y, paint);
canvas.restore();
}
@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);
}
/**
* 根据角度绘制图标的类
* @param canvas 画布
* @param fraction 完成时间百分比
* @param icon 图标
* @param width view宽度
* @param height view高度
*/
private void drawIconOne(Canvas canvas, float fraction, Bitmap icon, int width, int height) {
Camera camera = new Camera();
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
canvas.save();
int centerX = width / 2;
int centerY = height / 2 - 200;
int x = centerX - icon.getWidth()/2;
int y = centerY - icon.getHeight()/2;
Matrix matrix = new Matrix();
matrix.postScale(1.7f, 1.7f, centerX, centerY);
canvas.concat(matrix);
canvas.clipRect(x, y, x + icon.getWidth() * fraction * 0.5f, y + icon.getHeight() * fraction * 0.5f);
canvas.translate(centerX, centerY);
camera.save();
camera.rotateX(180);
camera.rotateY(-180);
camera.applyToCanvas(canvas);
camera.restore();
canvas.translate(-centerX, -centerY);
canvas.drawBitmap(icon, x, y, paint);
canvas.restore();
}
@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);
}
@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);
}
/**
* 执行顺序 matrix.preTranslate() --> camera.rotateY(degrees) --> matrix.postTranslate() --> matrix.postScale()
* @param interpolatedTime
* @param t
*/
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
float degrees = mReverse ? mToDegrees + (mFromDegrees - mToDegrees) * interpolatedTime : mFromDegrees + (mToDegrees - mFromDegrees) * interpolatedTime;
final Matrix matrix = t.getMatrix();
final Camera camera = mCamera;
camera.save();
camera.rotateY(degrees);
camera.getMatrix(matrix);
camera.restore();
// matrix.preTranslate(-mPivotXValue, 0); //在进行rotateY之前需要移动物体，让物体左边与Y轴对齐
// matrix.postTranslate(mPivotXValue, 0); //还原物体位置
if (mReverse) {
matrix.postScale(1 + (scaleTimes - 1) * (1.0f - interpolatedTime), 1 + (scaleTimes - 1) * (1.0f - interpolatedTime), mPivotX - mPivotXValue , mPivotY - mPivotYValue);
} else {
// matrix.postScale(1 + (scaleTimes - 1) * interpolatedTime, 1 + (scaleTimes - 1) * interpolatedTime, mPivotX, mPivotY);
matrix.postScale(1 + (scaleTimes - 1) * interpolatedTime, 1 + (scaleTimes - 1) * interpolatedTime, mPivotX - mPivotXValue , mPivotY - mPivotYValue );
}
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
final float fromDegrees = mFromDegrees;
float degrees = fromDegrees
+ ((mToDegrees - fromDegrees) * interpolatedTime);
final float fromZ = mFromZ;
float z = fromZ + ((mToZ - fromZ)*interpolatedTime);
final float centerX = mCenterX;
final float centerY = mCenterY;
final Camera camera = mCamera;
final Matrix matrix = t.getMatrix();
camera.save();
camera.translate(0, 0, z);
camera.rotateY(degrees);
camera.getMatrix(matrix);
camera.restore();
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
private void transformMatrix(Matrix m, View view) {
final float w = view.getWidth();
final float h = view.getHeight();
final boolean hasPivot = mHasPivot;
final float pX = hasPivot ? mPivotX : w / 2f;
final float pY = hasPivot ? mPivotY : h / 2f;
final float rX = mRotationX;
final float rY = mRotationY;
final float rZ = mRotationZ;
if ((rX != 0) || (rY != 0) || (rZ != 0)) {
final Camera camera = mCamera;
camera.save();
camera.rotateX(rX);
camera.rotateY(rY);
camera.rotateZ(-rZ);
camera.getMatrix(m);
camera.restore();
m.preTranslate(-pX, -pY);
m.postTranslate(pX, pY);
}
final float sX = mScaleX;
final float sY = mScaleY;
if ((sX != 1.0f) || (sY != 1.0f)) {
m.postScale(sX, sY);
final float sPX = -(pX / w) * ((sX * w) - w);
final float sPY = -(pY / h) * ((sY * h) - h);
m.postTranslate(sPX, sPY);
}
m.postTranslate(mTranslationX, mTranslationY);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
// 根据时间和起始终止的角度值，插值算出当前的角度：degrees
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();
//pre:
matrix.preTranslate(-centerX, -centerY);
//post:
matrix.postTranslate(centerX, centerY);
}
@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();
// 将当前的摄像头位置保存下来，以便变换进行完成后恢复成原位，
camera.save();
// camera.translate，这个方法接受3个参数，分别是x,y,z三个轴的偏移量，我们这里只将z轴进行了偏移，
if (mReverse) {
// z的偏移会越来越大。这就会形成这样一个效果，view从近到远
camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);
} else {
// z的偏移会越来越小。这就会形成这样一个效果，我们的View从一个很远的地方向我们移过来，越来越近，最终移到了我们的窗口上面～
camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));
}
// 是给我们的View加上旋转效果，在移动的过程中，视图还会移Y轴为中心进行旋转。
camera.rotateY(degrees);
// 是给我们的View加上旋转效果，在移动的过程中，视图还会移X轴为中心进行旋转。
// camera.rotateX(degrees);
// 这个是将我们刚才定义的一系列变换应用到变换矩阵上面，调用完这句之后，我们就可以将camera的位置恢复了，以便下一次再使用。
camera.getMatrix(matrix);
// camera位置恢复
camera.restore();
// 以View的中心点为旋转中心,如果不加这两句，就是以（0,0）点为旋转中心
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
private void transformMatrix(Matrix m, View view) {
final float w = view.getWidth();
final float h = view.getHeight();
final boolean hasPivot = mHasPivot;
final float pX = hasPivot ? mPivotX : w / 2f;
final float pY = hasPivot ? mPivotY : h / 2f;
final float rX = mRotationX;
final float rY = mRotationY;
final float rZ = mRotationZ;
if ((rX != 0) || (rY != 0) || (rZ != 0)) {
final Camera camera = mCamera;
camera.save();
camera.rotateX(rX);
camera.rotateY(rY);
camera.rotateZ(-rZ);
camera.getMatrix(m);
camera.restore();
m.preTranslate(-pX, -pY);
m.postTranslate(pX, pY);
}
final float sX = mScaleX;
final float sY = mScaleY;
if ((sX != 1.0f) || (sY != 1.0f)) {
m.postScale(sX, sY);
final float sPX = -(pX / w) * ((sX * w) - w);
final float sPY = -(pY / h) * ((sY * h) - h);
m.postTranslate(sPX, sPY);
}
m.postTranslate(mTranslationX, mTranslationY);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
super.applyTransformation(interpolatedTime, t);
Matrix matrix = t.getMatrix();
Camera camera = new Camera();
camera.save();
camera.rotateY(-180 * interpolatedTime);
camera.getMatrix(matrix);
camera.restore();
matrix.preTranslate(-mcenterX,-mcenterY);
matrix.postTranslate(mcenterX,mcenterY);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
super.applyTransformation(interpolatedTime, t);
Matrix matrix = t.getMatrix();
Camera camera = new Camera();
camera.save();
camera.rotateY(90-90 * interpolatedTime);
camera.getMatrix(matrix);
camera.restore();
matrix.preTranslate(-mcenterX,-mcenterY);
matrix.postTranslate(mcenterX,mcenterY);
}
private void transformMatrix(Matrix m, View view) {
final float w = view.getWidth();
final float h = view.getHeight();
final boolean hasPivot = mHasPivot;
final float pX = hasPivot ? mPivotX : w / 2f;
final float pY = hasPivot ? mPivotY : h / 2f;
final float rX = mRotationX;
final float rY = mRotationY;
final float rZ = mRotationZ;
if ((rX != 0) || (rY != 0) || (rZ != 0)) {
final Camera camera = mCamera;
camera.save();
camera.rotateX(rX);
camera.rotateY(rY);
camera.rotateZ(-rZ);
camera.getMatrix(m);
camera.restore();
m.preTranslate(-pX, -pY);
m.postTranslate(pX, pY);
}
final float sX = mScaleX;
final float sY = mScaleY;
if ((sX != 1.0f) || (sY != 1.0f)) {
m.postScale(sX, sY);
final float sPX = -(pX / w) * ((sX * w) - w);
final float sPY = -(pY / h) * ((sY * h) - h);
m.postTranslate(sPX, sPY);
}
m.postTranslate(mTranslationX, mTranslationY);
}
protected void applyTransformation(Transformation t) {
final Matrix m = t.getMatrix();
final float w = mWidth;
final float h = mHeight;
final float pX = mPivotX;
final float pY = mPivotY;
final float rX = mRotationX;
final float rY = mRotationY;
final float rZ = mRotationZ;
if ((rX != 0) || (rY != 0) || (rZ != 0)) {
final Camera camera = mCamera;
camera.save();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1) {
camera.setLocation(mCameraX, mCameraY, mCameraZ);
}
if (mTranslationZ != 0) {
camera.translate(0, 0, mTranslationZ);
}
camera.rotateX(rX);
camera.rotateY(rY);
camera.rotateZ(-rZ);
camera.getMatrix(m);
camera.restore();
m.preTranslate(-pX, -pY);
m.postTranslate(pX, pY);
}
final float sX = mScaleX;
final float sY = mScaleY;
if ((sX != 1.0f) || (sY != 1.0f)) {
m.postScale(sX, sY);
final float sPX = -(pX / w) * ((sX * w) - w);
final float sPY = -(pY / h) * ((sY * h) - h);
m.postTranslate(sPX, sPY);
}
m.postTranslate(mTranslationX, mTranslationY);
t.setAlpha(mAlpha);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
final float fromDegrees = mFromDegrees;
// 生成中间角度
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);
// 取得变换后的矩阵
camera.getMatrix(matrix);
camera.restore();
//----------------------------------------------------------------------------
/**
* 修复打脸问题 (￣ε(#￣)☆╰╮(￣▽￣///)
* 简要介绍：
* 原来的3D翻转会由于屏幕像素密度问题而出现效果相差很大
* 例如在屏幕像素比为1,5的手机上显示效果基本正常，
* 而在像素比3,0的手机上面感觉翻转感觉要超出屏幕边缘，
* 有种迎面打脸的感觉、
*
* 解决方案
* 利用屏幕像素密度对变换矩阵进行校正，
* 保证了在所有清晰度的手机上显示的效果基本相同。
*
*/
float[] mValues = {0,0,0,0,0,0,0,0,0};
matrix.getValues(mValues); //获取数值
mValues[6] = mValues[6]/scale; //数值修正
matrix.setValues(mValues); //重新赋值
// Log.e("TAG", "mValues["+0+"]="+mValues[0]+"------------\t"+"mValues["+6+"]="+mValues[6]);
//----------------------------------------------------------------------------
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
private void a(Matrix matrix, View view)
{
float f1 = view.getWidth();
float f2 = view.getHeight();
boolean flag = d;
float f3;
float f4;
float f5;
float f6;
float f7;
float f8;
float f9;
if (flag)
{
f3 = f;
} else
{
f3 = f1 / 2.0F;
}
if (flag)
{
f4 = g;
} else
{
f4 = f2 / 2.0F;
}
f5 = h;
f6 = i;
f7 = j;
if (f5 != 0.0F || f6 != 0.0F || f7 != 0.0F)
{
Camera camera = c;
camera.save();
camera.rotateX(f5);
camera.rotateY(f6);
camera.rotateZ(-f7);
camera.getMatrix(matrix);
camera.restore();
matrix.preTranslate(-f3, -f4);
matrix.postTranslate(f3, f4);
}
f8 = k;
f9 = l;
if (f8 != 1.0F || f9 != 1.0F)
{
matrix.postScale(f8, f9);
matrix.postTranslate(-(f3 / f1) * (f8 * f1 - f1), -(f4 / f2) * (f9 * f2 - f2));
}
matrix.postTranslate(m, n);
}
@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);
}