public static Matrix4f createViewMatrix(Vector3f AtVec, Vector3f EyeVec, Vector3f UpVec)
{
Matrix4f viewMatrix = Matrix4f.identity();
viewMatrix = lookAt(AtVec, EyeVec, UpVec);
return(viewMatrix);
}
/// <summary>
/// Builds a rotation 4 * 4 matrix created from an axis vector and an angle.
/// </summary>
/// <param name="m">The m.</param>
/// <param name="angle">The angle.</param>
/// <param name="v">The v.</param>
/// <returns></returns>
public static Matrix4f rotate(Matrix4f m, float angle, Vector3f v)
{
float c = Trigonometric.Cos(angle);
float s = Trigonometric.Sin(angle);
Vector3f axis = Geometric.Normalize(v);
Vector3f temp = (1.0f - c) * axis;
Matrix4f rotate = Matrix4f.identity();
rotate[0, 0] = c + temp[0] * axis[0];
rotate[0, 1] = 0 + temp[0] * axis[1] + s * axis[2];
rotate[0, 2] = 0 + temp[0] * axis[2] - s * axis[1];
rotate[1, 0] = 0 + temp[1] * axis[0] - s * axis[2];
rotate[1, 1] = c + temp[1] * axis[1];
rotate[1, 2] = 0 + temp[1] * axis[2] + s * axis[0];
rotate[2, 0] = 0 + temp[2] * axis[0] + s * axis[1];
rotate[2, 1] = 0 + temp[2] * axis[1] - s * axis[0];
rotate[2, 2] = c + temp[2] * axis[2];
Matrix4f result = Matrix4f.identity();
result[0] = m[0] * rotate[0][0] + m[1] * rotate[0][1] + m[2] * rotate[0][2];
result[1] = m[0] * rotate[1][0] + m[1] * rotate[1][1] + m[2] * rotate[1][2];
result[2] = m[0] * rotate[2][0] + m[1] * rotate[2][1] + m[2] * rotate[2][2];
result[3] = m[3];
return(result);
}
public static Matrix4f createModelMatrix(Vector3f translation, Vector3f rotate, Vector3f scale)
{
Matrix4f modelMatrix = Matrix4f.identity();
modelMatrix = translate(modelMatrix, translation);
modelMatrix = MatrixMath.rotate(modelMatrix, Trigonometric.toRadians(rotate.x), new Vector3f(1, 0, 0));
modelMatrix = MatrixMath.rotate(modelMatrix, Trigonometric.toRadians(rotate.y), new Vector3f(0, 1, 0));
modelMatrix = MatrixMath.rotate(modelMatrix, Trigonometric.toRadians(rotate.z), new Vector3f(0, 0, 1));
modelMatrix = MatrixMath.scale(modelMatrix, scale);
return(modelMatrix);
}
public static Matrix4f rotate(float angle, Vector3f v)
{
return(rotate(Matrix4f.identity(), angle, v));
}