public void DefaultMinAndMaxCylinder()
{
var cyl = new shape.Cylinder();
Assert.True(double.IsNegativeInfinity(cyl.Minimum));
Assert.True(double.IsPositiveInfinity(cyl.Maximum));
}
public void UnboundedCylinderBoundingBox()
{
var s = new shape.Cylinder();
var box = s.Bounds();
Assert.Equal(pt.Point(-1, double.NegativeInfinity, -1), box.Minimum);
Assert.Equal(pt.Point(1, double.PositiveInfinity, 1), box.Maximum);
}
public void NormalOnCylinder(double pX, double pY, double pZ, double vX, double vY, double vZ)
{
var point = pt.Point(pX, pY, pZ);
var normal = pt.Vector(vX, vY, vZ);
var cyl = new shape.Cylinder();
var n = cyl.NormalAt(point);
Assert.Equal(normal, n);
}
public void RayMissCylinder(double pX, double pY, double pZ, double vX, double vY, double vZ)
{
var origin = pt.Point(pX, pY, pZ);
var direction = pt.Vector(vX, vY, vZ).Normalize();
var cyl = new shape.Cylinder();
var ray = new Ray(origin, direction);
var xs = cyl.Intersect(ray);
Assert.Empty(xs);
}
public void BoundedCylinderBoundingBox()
{
var s = new shape.Cylinder()
{
Minimum = -5,
Maximum = 3
};
var box = s.Bounds();
Assert.Equal(pt.Point(-1, -5, -1), box.Minimum);
Assert.Equal(pt.Point(1, 3, 1), box.Maximum);
}
public void RayStrikeCylinder(double pX, double pY, double pZ, double vX, double vY, double vZ, double t0, double t1)
{
var cyl = new shape.Cylinder();
var origin = pt.Point(pX, pY, pZ);
var direction = pt.Vector(vX, vY, vZ).Normalize();
var ray = new Ray(origin, direction);
var xs = cyl.Intersect(ray);
Assert.Equal(2, xs.Length);
Assert.Equal(t0, xs[0].T, 5);
Assert.Equal(t1, xs[1].T, 5);
}
public void NormalOnCylinderEndCap(double pX, double pY, double pZ, double vX, double vY, double vZ)
{
var point = pt.Point(pX, pY, pZ);
var normal = pt.Vector(vX, vY, vZ);
var cyl = new shape.Cylinder()
{
Minimum = 1,
Maximum = 2,
Closed = true
};
var n = cyl.NormalAt(point);
Assert.Equal(normal, n);
}
public void IntersectingConstrainedCylinder(double pX, double pY, double pZ, double vX, double vY, double vZ, int count)
{
var point = pt.Point(pX, pY, pZ);
var direction = pt.Vector(vX, vY, vZ).Normalize();
var cyl = new shape.Cylinder
{
Minimum = 1,
Maximum = 2
};
var r = new Ray(point, direction);
var xs = cyl.Intersect(r);
Assert.Equal(count, xs.Length);
}
/*
* - add: camera
* width: 400
* height: 400
* field-of-view: 0.5
* from: [0, 0, -10]
* to: [0, 0, 0]
* up: [0, 1, 0]
*
* - add: light
* at: [-10, 10, -10]
* intensity: [1, 1, 1]
*
* - add: cylinder
* min: 0
* max: 1
* transform:
* - [translate, 0, -0.5, 0]
* - [scale, 1, 3.1415, 1]
* material:
* pattern:
* type: map
* mapping: cylindrical
* uv_pattern:
* type: checkers
* width: 16
* height: 8
* colors:
* - [0, 0.5, 0]
* - [1, 1, 1]
* ambient: 0.1
* specular: 0.6
* shininess: 15
* diffuse: 0.8
*
*/
private void CheckersOnCylinder_Click(object sender, RoutedEventArgs e)
{
var camera = new RTF.Camera(400, 400, 0.5)
{
Transform = transform.ViewTransform(
point.Point(0, 0, -10),
point.Point(0, 0, 0),
point.Vector(0, 1, 0))
};
var light = new RTF.Light(point.Point(-10, 10, -10), RTF.Color.White);
var checker = new UV.Checker(16, 8, new RTF.Color(0, 0.5, 0), new RTF.Color(1, 1, 1));
var pattern = new patterns.TextureMap(UV.Pattern.CylindricalMap, checker);
var cylinder = new shapes.Cylinder()
{
Minimum = 0,
Maximum = 1,
Transform = transform.Translation(0, -0.5, 0) * transform.Scaling(1, Math.PI, 1),
Material = new RTF.Material()
{
Pattern = pattern,
Ambient = 0.1,
Specular = 0.6,
Shininess = 15,
Diffuse = 0.8
}
};
var world = new RTF.World();
world.Lights.Add(light);
world.Objects.Add(cylinder);
var watch = System.Diagnostics.Stopwatch.StartNew();
var canvas = RTF.Canvas.Render(camera, world);
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
canvas.SaveAsPPMFile(FolderPath.Text + $"\\TextureMap_2DCheckersCylinder[{elapsedMs}ms].ppm");
}
public void GroupHasBoundingBoxContainsItsChildren()
{
var s = new shape.Sphere()
{
Transform = transform.Translation(2, 5, -3) * transform.Scaling(2, 2, 2)
};
var c = new shape.Cylinder()
{
Minimum = -2,
Maximum = 2,
Transform = transform.Translation(-4, -1, 4) * transform.Scaling(0.5, 1, 0.5)
};
var shape = new shape.Group();
shape.Add(s);
shape.Add(c);
var box = shape.Bounds();
Assert.Equal(pt.Point(-4.5, -3, -5), box.Minimum);
Assert.Equal(pt.Point(4, 7, 4.5), box.Maximum);
}
private List <Intersection> IntersectCaps(Cylinder cyl, Ray ray)
{
var xs = new List <Intersection>();
if (cyl.Closed == false || Math.Abs(ray.Direction.Y) <= EPSILON)
{
return(xs);
}
var t = (cyl.Minimum - ray.Origin.Y) / ray.Direction.Y;
if (CheckCap(ray, t))
{
xs.Add(new Intersection(t, cyl));
}
t = (cyl.Maximum - ray.Origin.Y) / ray.Direction.Y;
if (CheckCap(ray, t))
{
xs.Add(new Intersection(t, cyl));
}
return(xs);
}
public void DefaultClosedValueCylinder()
{
var cyl = new shape.Cylinder();
Assert.False(cyl.Closed);
}
private void Earth_Click(object sender, RoutedEventArgs e)
{
var file = new List <string>();
try
{
using (StreamReader sr = new StreamReader(@".\Files\EarthMap.ppm"))
{
string line;
while ((line = sr.ReadLine()) != null)
{
file.Add(line);
}
}
}
catch (FileNotFoundException ex)
{
throw ex;
}
var canvas = RTF.Canvas.CanvasFromPPM(file);
var pattern = new UV.Image(canvas);
var light = new RTF.Light(point.Point(-100, 100, -100), RTF.Color.White);
var camera = new RTF.Camera(800, 400, 0.8)
{
Transform = transform.ViewTransform(
point.Point(1, 2, -10),
point.Point(0, 1.1, 0),
point.Vector(0, 1, 0))
};
var cylinder = new shapes.Cylinder()
{
Minimum = 0,
Maximum = 0.1,
Closed = true,
Material = new RTF.Material()
{
Color = RTF.Color.White,
Diffuse = 0.2,
Specular = 0,
Ambient = 0,
Reflective = 0.1
}
};
var plane = new shapes.Plane()
{
Material = new RTF.Material()
{
Color = RTF.Color.White,
Diffuse = 0.1,
Specular = 0,
Ambient = 0,
Reflective = 0.4
}
};
var sphere = new shapes.Sphere()
{
Transform = transform.Translation(0, 1.1, 0) * transform.RotationY(1.9),
Material = new RTF.Material()
{
Pattern = new patterns.TextureMap(UV.Pattern.SphericalMap, pattern),
Diffuse = 0.9,
Specular = 0.1,
Shininess = 10,
Ambient = 0.1
}
};
var world = new RTF.World
{
Lights = new List <RTF.Light>()
{
light
},
Objects = new List <shapes.Shape>()
{
cylinder, plane, sphere
}
};
var watch = System.Diagnostics.Stopwatch.StartNew();
var finalCanvas = RTF.Canvas.Render(camera, world);
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
finalCanvas.SaveAsPPMFile(FolderPath.Text + $"\\TextureMap_Earth[{elapsedMs}ms].ppm");
}