static public VFXExpression Atan2(VFXExpression coord)
{
var components = ExtractComponents(coord).ToArray();
var theta = new VFXExpressionATan2(components[1], components[0]);
return(theta);
}
static public VFXExpression[] RectangularToPolar(VFXExpression coord)
{
//theta = atan2(coord.y, coord.x)
//distance = length(coord)
var components = ExtractComponents(coord).ToArray();
var theta = new VFXExpressionATan2(components[1], components[0]);
var distance = Length(coord);
return(new VFXExpression[] { theta, distance });
}
static public VFXExpression[] RectangularToSpherical(VFXExpression coord)
{
//distance = length(coord)
//theta = atan2(z, x)
//phi = asin(y / distance)
var components = ExtractComponents(coord).ToArray();
var distance = Length(coord);
var theta = new VFXExpressionATan2(components[2], components[0]);
var phi = new VFXExpressionASin(components[1] / distance);
return(new VFXExpression[] { theta, phi, distance });
}
