PointToLineRotate

来源：互联网发布：python shape函数编辑：程序博客网时间：2024/06/07 10:31
public class PointToLineRotate extends View{    private Paint paint;    private float pi = (float) Math.PI;    private float startAngle = 0;    private float angle = 0;    private float addAngle = 0;    private ValueAnimator endValue;    private ValueAnimator startValue;    private int width = 10;    public PointToLineRotate(Context context, AttributeSet attrs) {        super(context, attrs);        paint = new Paint(Paint.ANTI_ALIAS_FLAG);        //画线        paint.setStyle(Paint.Style.STROKE);        paint.setStrokeWidth(width);        paint.setColor(Color.parseColor("#ffaa66cc"));    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        RectF rectF = new RectF();        rectF.set(width / 2, width / 2, getWidth() - width / 2, getHeight() - width / 2);        if (null == startValue) {            loading();        }        angle = -(float) endValue.getAnimatedValue();        startAngle = (float) startValue.getAnimatedValue();        canvas.drawArc(rectF, startAngle, angle, false, paint);        if (endValue.isRunning() || startValue.isRunning()) {            invalidate();        }    }    private void loading() {        if (startValue == null) {            startValue = makeValueAnimator(0, 360);        }else {            startValue.start();        }        if (endValue == null) {            endValue = makeEndValueAnimator(30, 60, 120, 90, 60, 30);        }else {            endValue.start();        }        postDelayed(new Runnable() {            @Override            public void run() {                loading();                invalidate();            }        }, startValue.getDuration());    }    private ValueAnimator makeValueAnimator(float... value) {        ValueAnimator valueAnimator = ValueAnimator.ofFloat(value);        valueAnimator.setInterpolator(new LinearInterpolator());        valueAnimator.setDuration(1000);        valueAnimator.start();        return valueAnimator;    }    private ValueAnimator makeEndValueAnimator(float... value) {        ValueAnimator valueAnimator = ValueAnimator.ofFloat(value);        valueAnimator.setInterpolator(new LinearInterpolator());        valueAnimator.setDuration(1000);        valueAnimator.start();        return valueAnimator;    }    private float circleR;    private ValueAnimator makeCircleData(float[] startCoordinate, float[] RCoordinate, int delay) {        float x1 = startCoordinate[0];        float y1 = startCoordinate[1];        float x0 = RCoordinate[0];        float y0 = RCoordinate[1];//        Log.i(TAG, "getCircleData x y: " + x1+"  ,"+y1+"  x0  "+x0+ " y0  "+y0);        circleR = (float) Math.sqrt((x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0));        float param = (float) (Math.abs(y1 - y0) / circleR);        if (param < -1.0) {            param = -1.0f;        } else if (param > 1.0) {            param = 1.0f;        }        float a = (float) Math.asin(param);        if (x1 >= x0 && y1 >= y0) {            a = a;        } else if (x1 < x0 && y1 >= y0) {            a = pi - a;        } else if (x1 < x0 && y1 < y0) {            a = a + pi;        } else {            a = 2 * pi - a;        }        ValueAnimator circleAnimator = ValueAnimator.ofFloat(a, a + 2 * pi);        circleAnimator.setDuration(1500);        circleAnimator.setInterpolator(new LinearInterpolator());        circleAnimator.setStartDelay(delay);        circleAnimator.start();        return circleAnimator;    }}
阅读全文
0 0