public void UnboundedConeBoundingBox()
{
var s = new shape.Cone();
var box = s.Bounds();
Assert.Equal(pt.Point(double.NegativeInfinity, double.NegativeInfinity, double.NegativeInfinity), box.Minimum);
Assert.Equal(pt.Point(double.PositiveInfinity, double.PositiveInfinity, double.PositiveInfinity), box.Maximum);
}
public void IntersectingConeWithRayParallelOneHalves()
{
var s = new shape.Cone();
var direction = pt.Vector(0, 1, 1).Normalize();
var r = new Ray(pt.Point(0, 0, -1), direction);
var xs = s.Intersect(r);
Assert.Single(xs);
Assert.Equal(0.35355, xs[0].T, 5);
}
public void ComputingNormalVectorCone(double pX, double pY, double pZ, double vX, double vY, double vZ)
{
var s = new shape.Cone();
var point = pt.Point(pX, pY, pZ);
var normal = pt.Vector(vX, vY, vZ).Normalize();
var n = s.NormalAt(point);
CustomAssert.Equal(normal, n, 5);
}
public void BoundedConeBoundingBox()
{
var s = new shape.Cone()
{
Minimum = -5,
Maximum = 3
};
var box = s.Bounds();
Assert.Equal(pt.Point(-5, -5, -5), box.Minimum);
Assert.Equal(pt.Point(5, 3, 5), box.Maximum);
}
public void IntersectConeRay(double pX, double pY, double pZ, double vX, double vY, double vZ, double t0, double t1)
{
var s = new shape.Cone();
var origin = pt.Point(pX, pY, pZ);
var direction = pt.Vector(vX, vY, vZ).Normalize();
var ray = new Ray(origin, direction);
var xs = s.Intersect(ray);
Assert.Equal(2, xs.Length);
Assert.Equal(t0, xs[0].T, 5);
Assert.Equal(t1, xs[1].T, 5);
}
public void IntersectConeEndCap(double pX, double pY, double pZ, double vX, double vY, double vZ, double count)
{
var s = new shape.Cone()
{
Minimum = -0.5,
Maximum = 0.5,
Closed = true
};
var origin = pt.Point(pX, pY, pZ);
var direction = pt.Vector(vX, vY, vZ).Normalize();
var ray = new Ray(origin, direction);
var xs = s.Intersect(ray);
Assert.Equal(count, xs.Length);
}
private void IceCreamButton_Click(object sender, RoutedEventArgs e)
{
List <shapes.Shape> shapes = new List <shapes.Shape>();
var a = new patterns.Stripe(RTF.Color.Maroon, RTF.Color.White);
var cone = new shapes.Cone()
{
Transform = transform.Scaling(0.5, 1, 0.5),
Material = new RTF.Material()
{
Pattern = a,
Specular = 0
},
Maximum = 3,
Minimum = 0
};
shapes.Add(cone);
var strawberry = new shapes.Sphere()
{
Transform = transform.Scaling(2, 2, 2) * transform.Translation(0, 2, 0),
Material = new RTF.Material()
{
Pattern = new patterns.Perturbed(new patterns.Stripe(RTF.Color.Pink, RTF.Color.Red)),
Reflective = 0.8,
Shininess = 200
}
};
shapes.Add(strawberry);
var watch = System.Diagnostics.Stopwatch.StartNew();
var canvas = CreateWorld(shapes);
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
canvas.SaveAsPPMFile(FolderPath.Text + $"\\IceCream[{elapsedMs}ms].ppm");
}
private List <Intersection> IntersectCaps(Cone cone, Ray ray)
{
var xs = new List <Intersection>();
if (cone.Closed == false || Math.Abs(ray.Direction.Y) <= EPSILON)
{
return(xs);
}
var t = (cone.Minimum - ray.Origin.Y) / ray.Direction.Y;
if (CheckCap(ray, t, cone.Minimum))
{
xs.Add(new Intersection(t, cone));
}
t = (cone.Maximum - ray.Origin.Y) / ray.Direction.Y;
if (CheckCap(ray, t, cone.Maximum))
{
xs.Add(new Intersection(t, cone));
}
return(xs);
}