Esempio n. 1
0
    private object ApplyProjectHorizontal(List <object> args)
    {
        if (args.Count != 4)
        {
            throw new ArgumentException("projectHorizontal requires 4 arguments: target, cameraLocation, opticAxis, focalLength");
        }
        var target         = args[0] as Vector3Variable;
        var cameraPosition = args[1] as Vector3Variable;
        var opticAxis      = args[2] as Vector3Variable;
        var focalLength    = args[3] as FloatVariable;

        if (target == null || cameraPosition == null || opticAxis == null || focalLength == null)
        {
            throw new ArgumentException("Invalid argument type in call to Project(Vector3, Vector3, Vector3, float)");
        }

        var offset = target - cameraPosition;
        var depth  = Vector3Variable.Dot(opticAxis, offset);

        // Axis must be a unit vector
        opticAxis.Magnitude.MustEqual(1);
        // Target must be at least 1mm in front of the camera
        depth.MustBeContainedIn(new Interval(0.001, double.PositiveInfinity));

        var yProjection = focalLength * offset.Y / depth;
        var xProjection = focalLength * (offset.X * opticAxis.Z - offset.Z * opticAxis.X) / depth;

        return(new Vector3Variable(xProjection, yProjection, FloatVariable.Constant(CSP, 1)));
    }
Esempio n. 2
0
 /// <summary>
 /// Converts float constants to FloatVariables
 /// </summary>
 /// <param name="x">Value (variable or constant)</param>
 /// <returns>Original value or FloatVariable if the original value had been a constant.</returns>
 object Variablize(object x)
 {
     if (x is double)
     {
         return(FloatVariable.Constant(CSP, (double)x));
     }
     return(x);
 }