protected internal Matrix3x2F RandomMatrix3x2()
{
var which = Random.NextDouble();
//return Matrix3x2F.Skew(90, 0); //check for bug 730701
Matrix3x2F ret;
if (which < 0.5)
{
ret = new Matrix3x2F(
1.0f - (float)Random.NextDouble() * (float)Random.NextDouble(),
(float)Random.NextDouble() * (float)Random.NextDouble(),
(float)Random.NextDouble() * (float)Random.NextDouble(),
1.0f - (float)Random.NextDouble() * (float)Random.NextDouble(),
(float)Random.NextDouble() * (float)Random.NextDouble(),
(float)Random.NextDouble() * (float)Random.NextDouble()
);
TraceMatrix(ret);
return(ret);
}
if (which < 0.8)
{
ret = Matrix3x2F.Identity;
TraceMatrix(ret);
return(ret);
}
if (which < 0.85)
{
ret = Matrix3x2F.Translation(
Random.Next(-20, 20),
Random.Next(-20, 20));
TraceMatrix(ret);
return(ret);
}
if (which < 0.90)
{
ret = Matrix3x2F.Skew(
(float)(Random.NextDouble() * Random.NextDouble() * 89),
(float)(Random.NextDouble() * Random.NextDouble() * 89),
CoinFlip ? new Point2F(0, 0) : RandomPoint());
TraceMatrix(ret);
return(ret);
}
if (which < 0.95)
{
ret = Matrix3x2F.Scale(
1 + (float)((Random.NextDouble() - 0.5) * Random.NextDouble()),
1 + (float)((Random.NextDouble() - 0.5) * Random.NextDouble()),
CoinFlip ? new Point2F(0, 0) : RandomPoint());
TraceMatrix(ret);
return(ret);
}
ret = Matrix3x2F.Rotation(
(float)((Random.NextDouble() - 0.5) * Random.NextDouble() * 720),
CoinFlip ? new Point2F(0, 0) : RandomPoint());
TraceMatrix(ret);
return(ret);
}
