关键就是剪除扇形,根据下面代码自己再调调吧
public void getSector(Canvas canvas, float radius, double fromDegree, double toDegree, Op op) {
canvas.translate(radius, radius);
Path pathCircle = new Path();
pathCircle.addCircle(0, 0, radius, Direction.CCW);
Path pathTriangle = new Path();
pathTriangle.moveTo(0, 0);
float vYFrom = (float) (Math.sin(fromDegree * Math.PI / 180) * 2 * radius);
float vYTo = (float) (Math.sin(toDegree * Math.PI / 180) * 2 * radius);
float vYCenter = (float) (Math.sin(((toDegree + fromDegree) / 2) * Math.PI / 180) * 2 * radius);
float vXFrom = (float) (Math.cos(fromDegree * Math.PI / 180) * 2 * radius);
float vXTo = (float) (Math.cos(toDegree * Math.PI / 180) * 2 * radius);
float vXCenter = (float) (Math.sin(((toDegree + fromDegree) / 2) * Math.PI / 180) * 2 * radius);
pathTriangle.lineTo(vXFrom, vYFrom);
pathTriangle.lineTo(vXCenter, vYCenter);
pathTriangle.lineTo(vXTo, vYTo);
pathTriangle.close();
canvas.clipPath(pathCircle);
canvas.clipPath(pathTriangle, op);
}
public void getSector(Canvas canvas, float radius, double fromDegree, double toDegree, Op op) {
canvas.translate(radius, radius);
Path pathCircle = new Path();
pathCircle.addCircle(0, 0, radius, Direction.CCW);
Path pathTriangle = new Path();
pathTriangle.moveTo(0, 0);
float vYFrom = (float) (Math.sin(fromDegree * Math.PI / 180) * 2 * radius);
float vYTo = (float) (Math.sin(toDegree * Math.PI / 180) * 2 * radius);
float vYCenter = (float) (Math.sin(((toDegree + fromDegree) / 2) * Math.PI / 180) * 2 * radius);
float vXFrom = (float) (Math.cos(fromDegree * Math.PI / 180) * 2 * radius);
float vXTo = (float) (Math.cos(toDegree * Math.PI / 180) * 2 * radius);
float vXCenter = (float) (Math.sin(((toDegree + fromDegree) / 2) * Math.PI / 180) * 2 * radius);
pathTriangle.lineTo(vXFrom, vYFrom);
pathTriangle.lineTo(vXCenter, vYCenter);
pathTriangle.lineTo(vXTo, vYTo);
pathTriangle.close();
canvas.clipPath(pathCircle);
canvas.clipPath(pathTriangle, op);
}
解决方案 »
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