public Matrix(float amount, MatrixInitializationType type)
{
_rowCount = 4;
_columnCount = 4;
_values = new float[16];
var cos = Mathf.Cos(amount);
var sin = Mathf.Sin(amount);
switch (type)
{
case MatrixInitializationType.RotateXVector:
_values[0] = 1;
_values[5] = cos;
_values[6] = -sin;
_values[9] = sin;
_values[10] = cos;
break;
case MatrixInitializationType.RotateYVector:
_values[5] = 1;
_values[0] = cos;
_values[2] = sin;
_values[8] = -sin;
_values[10] = cos;
break;
case MatrixInitializationType.RotateZVector:
_values[10] = 1;
_values[0] = cos;
_values[1] = -sin;
_values[4] = sin;
_values[5] = cos;
break;
case MatrixInitializationType.ShearVector:
_values[0] = 1;
_values[5] = 1;
_values[10] = 1;
_values[15] = 1;
_values[1] = amount;
break;
case MatrixInitializationType.ReflectionVector:
_values[0] = -1;
_values[5] = 1;
_values[10] = 1;
_values[15] = 1;
break;
}
}
public Matrix(Coordinate coordinate, MatrixInitializationType type)
{
_rowCount = 4;
_columnCount = 4;
_values = new float[16];
switch (type)
{
case MatrixInitializationType.TranslateVector:
_values[0] = 1;
_values[5] = 1;
_values[10] = 1;
_values[3] = coordinate.X;
_values[7] = coordinate.Y;
_values[11] = coordinate.Z;
_values[15] = coordinate.W;
break;
case MatrixInitializationType.ScaleVector:
_values[0] = coordinate.X;
_values[5] = coordinate.Y;
_values[10] = coordinate.Z;
_values[15] = coordinate.W;
break;
case MatrixInitializationType.QuaternionVector:
_values[0] = 1 - 2 * Mathf.Pow(coordinate.Y, 2) - 2 * Mathf.Pow(coordinate.Z, 2);
_values[1] = 2 * coordinate.X * coordinate.Y - 2 * coordinate.W * coordinate.Z;
_values[2] = 2 * coordinate.X * coordinate.Z + 2 * coordinate.W * coordinate.Y;
_values[4] = 2 * coordinate.X * coordinate.Y + 2 * coordinate.W * coordinate.Z;
_values[5] = 1 - 2 * Mathf.Pow(coordinate.X, 2) - 2 * Mathf.Pow(coordinate.Z, 2);
_values[6] = 2 * coordinate.Y * coordinate.Z - 2 * coordinate.W * coordinate.X;
_values[8] = 2 * coordinate.X * coordinate.Z - 2 * coordinate.W * coordinate.Y;
_values[9] = 2 * coordinate.Y * coordinate.Z + 2 * coordinate.W * coordinate.X;
_values[10] = 1 - 2 * Mathf.Pow(coordinate.X, 2) - 2 * Mathf.Pow(coordinate.Y, 2);
_values[15] = 1;
break;
}
}
