下面列出了怎么用android.graphics.Camera的API类实例代码及写法,或者点击链接到github查看源代码。
/**
* 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);
}
public RotateView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.RotateView);
BitmapDrawable bitmapDrawable = (BitmapDrawable) array.getDrawable(R.styleable.RotateView_viewBackgound2);
array.recycle();
if (bitmapDrawable != null) {
bitmap = bitmapDrawable.getBitmap();
byte[] bytes = BitmapUtil.bitmap2Bytes(bitmap);
bitmap = BitmapUtil.resizeBitmapBytes(bytes);
}else {
bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
}
camera = new Camera();
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
DisplayMetrics metrics = getResources().getDisplayMetrics();
float newZ = -metrics.density * 6;
camera.setLocation(0, 0, newZ);
}
/**
* 初始化并设置默认值
*
* @param context 上下文
*/
private void initValue(Context context) {
ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
mMaxFlingVelocity = viewConfiguration.getScaledMaximumFlingVelocity();
mMinFlingVelocity = viewConfiguration.getScaledMinimumFlingVelocity();
mScroller = new Scroller(context);
mDrawRect = new Rect();
mCamera = new Camera();
mMatrix = new Matrix();
if (!isInEditMode()) {
mSoundHelper = SoundHelper.obtain();
initDefaultVolume(context);
}
calculateTextSize();
updateTextAlign();
}
private void init(Context context) {
initSound();
setOverScrollMode(OVER_SCROLL_NEVER);
setHasFixedSize(true);
mDecorationPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mUnitTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
mDecorationRect = new Rect();
mDecoration = new DefaultDecoration();
mAdapter = new WheelAdapter(context);
super.setAdapter(mAdapter);
mLayoutManager = new WheelPickerLayoutManager(this);
super.setLayoutManager(mLayoutManager);
new LinearSnapHelper().attachToRecyclerView(this);
mCamera = new Camera();
mMatrix = new Matrix();
}
public SphereLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SphereLayout);
mRadius = a.getDimensionPixelSize(R.styleable.SphereLayout_radius, 0);//球体半径
mOrientation = a.getInt(R.styleable.SphereLayout_snapOrientation, HORIZONTAL);//标记位于背面的视图是以Y轴水平翻转到达正面 或是以X轴竖直翻转可到达正面
mHideBack = a.getBoolean(R.styleable.SphereLayout_hideBack, false);//是否隐藏处在背面的布局
a.recycle();
mCenter = new Point();
mCamera = new Camera();
mDependencyOffset = new int[2];
//mCamera.setLocation(0, 0, -20);
mMatrix = new Matrix();
mPositiveChildren = new ArrayList<>();//depth为正的childview集合
mNegativeChildren = new ArrayList<>();//depth为负的childview集合
mDensity = getResources().getDisplayMetrics().density;
}
/**
* 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) {
Camera camera = new Camera();
camera.save();
// 设置camera动作为绕Y轴旋转
// 总共旋转180度,因此计算在每个补间时间点interpolatedTime的角度即为两着相乘
// camera.rotateX(deg * interpolatedTime);
camera.rotateY(180 * interpolatedTime);
// camera.rotateZ(180 * interpolatedTime);
//
// 根据camera动作产生一个matrix,赋给Transformation的matrix,以用来设置动画效果
Matrix matrix = t.getMatrix();
camera.getMatrix(matrix);
camera.restore();
//经过以下平移,才能以view的中心点进行翻转
matrix.preTranslate(-view.getWidth() / 2, -view.getHeight() / 2);
matrix.postTranslate(view.getWidth() / 2, view.getHeight() / 2);
}
@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 centerX = mCenterX;
final float centerY = mCenterY;
final Camera camera = mCamera;
final int derection = mTurnUp ? 1 : -1;
final Matrix matrix = t.getMatrix();
camera.save();
if (mTurnIn) {
camera.translate(0.0f, derection * mCenterY * (interpolatedTime - 1.0f), 0.0f);
} else {
camera.translate(0.0f, derection * mCenterY * (interpolatedTime), 0.0f);
}
camera.rotateX(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);
}
@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);
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
mPivotX = resolveSize(mPivotXType, mPivotXValue, width, parentWidth);
mPivotY = resolveSize(mPivotYType, mPivotYValue, height, parentHeight);
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
camera = new Camera();
pivotX = resolveSize(mPivotXType, mPivotXValue, width, parentWidth);
pivotY = resolveSize(mPivotYType, mPivotYValue, height, parentHeight);
}
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);
}
/**
* 根据角度绘制图标的类
* @param canvas 画布
* @param degree 角度
* @param icon 图标
* @param width view宽度
* @param height view高度
*/
private void drawIconThree(Canvas canvas, int degree, Bitmap icon, int width, int height) {
Camera camera = new Camera();
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
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);
//绘制上半部分
canvas.save();
canvas.concat(matrix);
canvas.clipRect(x, y, x + icon.getWidth(), y + icon.getHeight() / 2);
canvas.drawBitmap(icon, x, y, paint);
canvas.restore();
//绘制下半部分
canvas.save();
canvas.concat(matrix);
if (degree <= 90)
canvas.clipRect(x, y, x + icon.getWidth(), y + icon.getHeight() / 2);
else
canvas.clipRect(x, y + icon.getHeight() / 2, x + icon.getWidth(), y + icon.getHeight());
canvas.translate(centerX, centerY);
camera.save();
camera.rotateX(180 - degree);
camera.applyToCanvas(canvas);
camera.restore();
canvas.translate(-centerX, -centerY);
canvas.drawBitmap(icon, x, y, paint);
canvas.restore();
}
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);
}
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);
}
public FlipDrawable(Drawable from, Drawable to) {
super(new Drawable[] { from, to });
mFrom = from;
mTo = to;
mCamera = new Camera();
mRotate = 0;
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
this.width = width /4;
this.height = height /4;
camera = new Camera();
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
mMatrix = new Matrix();
mWidth = width;
mHeight = height;
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
mMatrix = new Matrix();
mWidth = width;
mHeight = height;
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
mMatrix = new Matrix();
mWidth = width;
mHeight = height;
}
public HazeType(Context context) {
super(context);
setColor(0xFF7F8195);
mPathFront = new Path();
mPathRear = new Path();
mPaint = new Paint();
mMatrix = new Matrix();
camera = new Camera();
mBitmap = decodeResource(mBitmap, R.drawable.ic_haze_ground);
}
public SandstormType(Context context) {
super(context);
setColor(0xFFE99E3C);
mPathFront = new Path();
mPathRear = new Path();
mPaint = new Paint();
mMatrix = new Matrix();
camera = new Camera();
mBitmap = decodeResource(mBitmap, R.drawable.ic_sanstorm_ground);
}
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);
}