public override void UpdateScene(float dt)
{
base.UpdateScene(dt);
// Get camera position from polar coords
var x = _radius * MathF.Sin(_phi) * MathF.Cos(_theta);
var z = _radius * MathF.Sin(_phi) * MathF.Sin(_theta);
var y = _radius * MathF.Cos(_phi);
// Build the view matrix
var pos = new Vector3(x, y, z);
var target = new Vector3(0);
var up = new Vector3(0, 1, 0);
_view = Matrix.LookAtLH(pos, target, up);
_eyePosW = pos;
// Update texture transform
_t -= dt;
if (_t < 0)
{
_texTransform = _fireAtlas.GetTexTransform(i++ % _fireAtlas.NumCells);
_t = 0.05f;
}
}
