private Path buildWavePath(int width, int height)
{
int DP = Dp2Px.dp2px(1);//一个dp在当前设备表示的像素量（水波的绘制精度设为一个dp单位）
if (DP < 1)
{
DP = 1;
}
int wave = (int)(scaleY * this.wave);//计算拉伸之后的波幅
Path path = new Path();
path.MoveTo(0, 0);
path.LineTo(0, height - wave);
for (int x = DP; x < width; x += DP)
{
path.LineTo(x, height - wave - wave * (float)Math.Sin(4.0 * Math.PI * x / width));
}
path.LineTo(width, height - wave);
path.LineTo(width, 0);
path.Close();
return(path);
}
private void Init()
{
mPaint.AntiAlias = true;
mWaveHeight = Dp2Px.dp2px(50);
Random random = new Random();
int ranColor = Color.Red | random.Next(0x00ffffff);
mStartColor = ranColor;
mCloseColor = ranColor - 500;
mColorAlpha = 0.4f;
mProgress = 1f;
mVelocity = 1f;
mGradientAngle = 45;
mIsRunning = true;
Tag = "70,25,1.4,1.4,-26\n" +
"100,5,1.4,1.2,15\n" +
"420,0,1.15,1,-10\n" +
"520,10,1.7,1.5,20\n" +
"220,0,1,1,-15";
}
private void updateWavePath(int w, int h)
{
mltWave.Clear();
string[] waves = Tag.ToString().Split("\n");
if ("-1".Equals(Tag))
{
waves = "70,25,1.4,1.4,-26\n100,5,1.4,1.2,15\n420,0,1.15,1,-10\n520,10,1.7,1.5,20\n220,0,1,1,-15".Split("\n");
}
else if ("-2".Equals(Tag))
{
waves = "0,0,1,0.5,90\n90,0,1,0.5,90".Split("\n");
}
foreach (string wave in waves)
{
string[] args = wave.Split(",");
if (args.Length == 5)
{
mltWave.Add(new Wave(Dp2Px.dp2px(Float.ParseFloat(args[0])), Dp2Px.dp2px(Float.ParseFloat(args[1])), Dp2Px.dp2px(Float.ParseFloat(args[4])), Float.ParseFloat(args[2]), Float.ParseFloat(args[3]), w, h, mWaveHeight / 2));
}
}
}