public void SubdividingGroupWithTooFewChildren()
{
var s1 = new shape.Sphere(transform.Translation(-2, 0, 0));
var s2 = new shape.Sphere(transform.Translation(2, 1, 0));
var s3 = new shape.Sphere(transform.Translation(2, -1, 4));
var subgroup = new shape.Group(new List <shape.Shape>()
{
s1, s2, s3
});
var s4 = new shape.Sphere();
var g = new shape.Group(new List <shape.Shape>()
{
subgroup, s4
});
g.Divide(3);
Assert.Equal(subgroup, g[0]);
Assert.Equal(s4, g[1]);
var sg = (g[0] as shape.Group);
Assert.Equal(2, sg.Count());
Assert.IsType <shape.Group>(sg[0]);
Assert.Single((sg[0] as shape.Group).Children);
Assert.Equal(s1, (sg[0] as shape.Group)[0]);
Assert.IsType <shape.Group>(sg[1]);
Assert.Equal(2, (sg[1] as shape.Group).Count());
Assert.Equal(new List <shape.Shape>()
{
s2, s3
}, (sg[1] as shape.Group).Children);
}
public void SubdividingGroupPartitionsItsChildren()
{
var s1 = new shape.Sphere(transform.Translation(-2, -2, 0));
var s2 = new shape.Sphere(transform.Translation(-2, 2, 0));
var s3 = new shape.Sphere(transform.Scaling(4, 4, 4));
var g = new shape.Group(new List <shape.Shape>()
{
s1, s2, s3
});
g.Divide(1);
Assert.Equal(s3, g[0]);
var subgroup = g[1];
Assert.IsType <shape.Group>(subgroup);
var sg = subgroup as shape.Group;
Assert.Equal(2, sg.Count());
Assert.IsType <shape.Group>(sg[0]);
Assert.Single((sg[0] as shape.Group).Children);
Assert.Equal(s1, (sg[0] as shape.Group)[0]);
Assert.IsType <shape.Group>(sg[1]);
Assert.Single((sg[1] as shape.Group).Children);
Assert.Equal(s2, (sg[1] as shape.Group)[0]);
}
public void SphereBoundingBox()
{
var s = new shape.Sphere();
var box = s.Bounds();
Assert.Equal(pt.Point(-1, -1, -1), box.Minimum);
Assert.Equal(pt.Point(1, 1, 1), box.Maximum);
}
public void StripesWithObjectTransformation()
{
var obj = new shapes.Sphere(tf.Scaling(2, 2, 2));
var pattern = Pattern.GetStripePattern(RTF.Color.White, RTF.Color.Black);
RTF.Color c = pattern.AtObject(obj, pt.Point(1.5, 0, 0));
Assert.Equal(RTF.Color.White, c);
}
public void PatternWithTransformationObject()
{
var s = new shapes.Sphere(tf.Scaling(2, 2, 2));
var pattern = new TestPattern();
var c = pattern.AtObject(s, pt.Point(2, 3, 4));
Assert.Equal(new RTF.Color(1, 1.5, 2), c);
}
public void QueryingShapesBoundingBoxInParentSpace()
{
var sphere = new shape.Sphere()
{
Transform = transform.Translation(1, -3, 5) * transform.Scaling(0.5, 2, 4)
};
var box = sphere.ParentSpaceBounds();
Assert.Equal(pt.Point(0.5, -5, 1), box.Minimum);
Assert.Equal(pt.Point(1.5, -1, 9), box.Maximum);
}
public void CSGCreatedWithOperationAndTwoShapes()
{
var s1 = new shape.Sphere();
var s2 = new shape.Cube();
var c = new shape.CSG(shape.Operation.Union, s1, s2);
Assert.Equal(shape.Operation.Union, c.Operation);
Assert.Equal(s1, c.Left);
Assert.Equal(s2, c.Right);
Assert.Equal(c, s1.Parent);
Assert.Equal(c, s2.Parent);
}
public void IntersectingATransformedGroup()
{
var g = new shape.Group(transform.Scaling(2, 2, 2));
var s = new shape.Sphere(transform.Translation(5, 0, 0));
g.Add(s);
var r = new Ray(pt.Point(10, 0, -10), pt.Vector(0, 0, 1));
var xs = g.Intersect(r);
Assert.Equal(2, xs.Count());
}
public void PatternWithTransformationObjectAndPattern()
{
var s = new shapes.Sphere(tf.Scaling(2, 2, 2));
var pattern = new TestPattern()
{
Transform = tf.Translation(0.5, 1, 1.5)
};
var c = pattern.AtObject(s, pt.Point(2.5, 3, 3.5));
Assert.Equal(new RTF.Color(0.75, 0.5, 0.25), c);
}
public void RayHitsCSGObject()
{
var s1 = new shape.Sphere();
var s2 = new shape.Sphere(transform.Translation(0, 0, 0.5));
var c = new shape.CSG(shape.Operation.Union, s1, s2);
var r = new Ray(pt.Point(0, 0, -5), pt.Vector(0, 0, 1));
var xs = c.Intersect(r);
Assert.Equal(2, xs.Count());
Assert.Equal(4, xs[0].T);
Assert.Equal(s1, xs[0].Object);
Assert.Equal(6.5, xs[1].T);
Assert.Equal(s2, xs[1].Object);
}
public void ConvertingNormalFromObjectToWorldSpace()
{
var g1 = new shape.Group(transform.RotationY(Math.PI / 2));
var g2 = new shape.Group(transform.Scaling(1, 2, 3));
g1.Add(g2);
var s = new shape.Sphere(transform.Translation(5, 0, 0));
g2.Add(s);
var value = Math.Sqrt(3) / 3;
var n = s.NormalToWorld(pt.Vector(value, value, value));
CustomAssert.Equal(pt.Vector(0.2857, 0.4286, -0.8571), n, 4);
}
public void FindingNormalOnChildObject()
{
var g1 = new shape.Group(transform.RotationY(Math.PI / 2));
var g2 = new shape.Group(transform.Scaling(1, 2, 3));
g1.Add(g2);
var s = new shape.Sphere(transform.Translation(5, 0, 0));
g2.Add(s);
var n = s.NormalAt(pt.Point(1.7311, 1.1547, -5.5774));
//TODO precision error
CustomAssert.Equal(pt.Vector(0.2856, 0.4286, -0.8572), n, 4);
}
public void ConvertingPointFromWorldToObjectSpace()
{
var g1 = new shape.Group(transform.RotationY(Math.PI / 2));
var g2 = new shape.Group(transform.Scaling(2, 2, 2));
g1.Add(g2);
var s = new shape.Sphere(transform.Translation(5, 0, 0));
g2.Add(s);
var p = s.WorldToObject(pt.Point(-2, 0, -10));
CustomAssert.Equal(pt.Point(0, 0, -1), p, 5);
}
public void SubGroupFromListChildren()
{
var s1 = new shape.Sphere();
var s2 = new shape.Sphere();
var g = new shape.Group();
var list = new List <shape.Shape>()
{
s1, s2
};
g.Subgroup(list);
Assert.Single(g.Children);
Assert.IsType <shape.Group>(g.Children[0]);
Assert.Equal(list, (g.Children[0] as shape.Group).Children);
}
public void PartitioningGroupChildren()
{
var s1 = new shape.Sphere(transform.Translation(-2, 0, 0));
var s2 = new shape.Sphere(transform.Translation(2, 0, 0));
var s3 = new shape.Sphere();
var g = new shape.Group();
g.Add(new List <shape.Shape>()
{
s1, s2, s3
});
(List <shape.Shape> left, List <shape.Shape> right) = g.Partition();
Assert.Equal(1, g.Count());
Assert.Single(left);
Assert.Equal(s1, left[0]);
Assert.Single(right);
Assert.Equal(s2, right[0]);
}
public void IntersectingRayWithNonemptyGroup()
{
var g = new shape.Group();
var s1 = new shape.Sphere();
var s2 = new shape.Sphere(transform.Translation(0, 0, -3));
var s3 = new shape.Sphere(transform.Translation(5, 0, 0));
g.Add(s1);
g.Add(s2);
g.Add(s3);
var r = new Ray(pt.Point(0, 0, -5), pt.Vector(0, 0, 1));
var xs = g.Intersect(r);
Assert.Equal(4, xs.Count());
Assert.Equal(s2, xs[0].Object);
Assert.Equal(s2, xs[1].Object);
Assert.Equal(s1, xs[2].Object);
Assert.Equal(s1, xs[3].Object);
}
public void FilteringListIntersections(string op, int x0, int x1)
{
var operation = (shape.Operation)Enum.Parse(typeof(shape.Operation), op);
var s1 = new shape.Sphere();
var s2 = new shape.Cube();
var c = new shape.CSG(operation, s1, s2);
var xs = Intersection.Intersections(
new Intersection(1, s1),
new Intersection(2, s2),
new Intersection(3, s1),
new Intersection(4, s2)
);
List <Intersection> result = c.FilterIntersections(xs);
Assert.Equal(2, result.Count);
Assert.Equal(xs[x0], result[0]);
Assert.Equal(xs[x1], result[1]);
}
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");
}
public void ShadeHitReflectiveTransparentMaterial()
{
var w = World.Default();
var floor = new shape.Plane
{
Transform = transform.Translation(0, -1, 0),
Material = new Material()
{
Reflective = 0.5,
Transparency = 0.5,
RefractiveIndex = 1.5
}
};
w.Objects.Add(floor);
var ball = new shape.Sphere
{
Transform = transform.Translation(0, -3.5, -0.5),
Material = new Material()
{
Color = c.Red,
Ambient = 0.5
}
};
w.Objects.Add(ball);
var r = new Ray(
pt.Point(0, 0, -3),
pt.Vector(0, -Math.Sqrt(2) / 2, Math.Sqrt(2) / 2));
var xs = Intersection.Intersections(
new Intersection(Math.Sqrt(2), floor));
var comps = Computation.PrepareComputations(xs[0], r, xs);
var color = w.ShadeHit(comps, 5);
//TODO var exp = new c(0.93391, 0.69643, 0.69243);
var exp = new c(0.93392, 0.69644, 0.69243);
CustomAssert.Equal(exp, color, 5);
}
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);
}
/*
*- add: camera
* width: 400
* height: 400
* field-of-view: 0.5
* from: [0, 0, -5]
* to: [0, 0, 0]
* up: [0, 1, 0]
*
* - add: light
* at: [-10, 10, -10]
* intensity: [1, 1, 1]
*
* - add: sphere
* material:
* pattern:
* type: map
* mapping: spherical
* uv_pattern:
* type: checkers
* width: 20
* height: 10
* colors:
* - [0, 0.5, 0]
* - [1, 1, 1]
* ambient: 0.1
* specular: 0.4
* shininess: 10
* diffuse: 0.6
*/
private void CheckersOnSphere_Click(object sender, RoutedEventArgs e)
{
var camera = new RTF.Camera(400, 400, 0.5)
{
Transform = transform.ViewTransform(
point.Point(0, 0, -5),
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(20, 10, new RTF.Color(0, 0.5, 0), new RTF.Color(1, 1, 1));
var pattern = new patterns.TextureMap(UV.Pattern.SphericalMap, checker);
var sphere = new shapes.Sphere()
{
Material = new RTF.Material()
{
Pattern = pattern,
Ambient = 0.1,
Specular = 0.4,
Shininess = 10,
Diffuse = 0.6
}
};
var world = new RTF.World();
world.Lights.Add(light);
world.Objects.Add(sphere);
var watch = System.Diagnostics.Stopwatch.StartNew();
var canvas = RTF.Canvas.Render(camera, world);
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
canvas.SaveAsPPMFile(FolderPath.Text + $"\\TextureMap_2DCheckers3DSphere[{elapsedMs}ms].ppm");
}
private void LancellottiChapel_Click(object sender, RoutedEventArgs e)
{
var light = new RTF.Light(point.Point(0, 100, 0), RTF.Color.White);
var camera = new RTF.Camera(800, 400, 1.2)
{
Transform = transform.ViewTransform(
point.Point(0, 0, 0),
point.Point(0, 0, 5),
point.Vector(0, 1, 0))
};
var sphere = new shapes.Sphere()
{
Transform = transform.Translation(0, 0, 5) * transform.Scaling(0.75, 0.75, 0.75),
Material = new RTF.Material()
{
Diffuse = 0.4,
Specular = 0.6,
Shininess = 20,
Reflective = 0.6,
Ambient = 0
}
};
var negx = new List <string>();
var negy = new List <string>();
var negz = new List <string>();
var posx = new List <string>();
var posy = new List <string>();
var posz = new List <string>();
try
{
using (StreamReader sr = new StreamReader(@".\Files\negx.ppm"))
{
string line;
while ((line = sr.ReadLine()) != null)
{
negx.Add(line);
}
}
using (StreamReader sr = new StreamReader(@".\Files\negy.ppm"))
{
string line;
while ((line = sr.ReadLine()) != null)
{
negy.Add(line);
}
}
using (StreamReader sr = new StreamReader(@".\Files\negz.ppm"))
{
string line;
while ((line = sr.ReadLine()) != null)
{
negz.Add(line);
}
}
using (StreamReader sr = new StreamReader(@".\Files\posx.ppm"))
{
string line;
while ((line = sr.ReadLine()) != null)
{
posx.Add(line);
}
}
using (StreamReader sr = new StreamReader(@".\Files\posy.ppm"))
{
string line;
while ((line = sr.ReadLine()) != null)
{
posy.Add(line);
}
}
using (StreamReader sr = new StreamReader(@".\Files\posz.ppm"))
{
string line;
while ((line = sr.ReadLine()) != null)
{
posz.Add(line);
}
}
}
catch (FileNotFoundException ex)
{
throw ex;
}
var pattern = new UV.Cube(new UV.Image(RTF.Canvas.CanvasFromPPM(negx)),
new UV.Image(RTF.Canvas.CanvasFromPPM(posx)),
new UV.Image(RTF.Canvas.CanvasFromPPM(posz)),
new UV.Image(RTF.Canvas.CanvasFromPPM(negz)),
new UV.Image(RTF.Canvas.CanvasFromPPM(posy)),
new UV.Image(RTF.Canvas.CanvasFromPPM(negy)));
var cube = new shapes.Sphere()
{
Transform = transform.Scaling(1000, 1000, 1000),
Material = new RTF.Material()
{
Pattern = pattern,
Diffuse = 0,
Specular = 0,
Ambient = 1
}
};
var world = new RTF.World
{
Lights = new List <RTF.Light>()
{
light
},
Objects = new List <shapes.Shape>()
{
sphere, cube
}
};
var watch = System.Diagnostics.Stopwatch.StartNew();
var finalCanvas = RTF.Canvas.Render(camera, world);
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
finalCanvas.SaveAsPPMFile(FolderPath.Text + $"\\TextureMap_LancellottiChapel[{elapsedMs}ms].ppm");
}
public RTF.Canvas CreateCircle()
{
var floor = new shapes.Sphere()
{
Transform = transform.Scaling(10, 0.01, 10),
Material = new RTF.Material()
{
Color = new RTF.Color(1, 0.9, 0.9),
Specular = 0
}
};
var leftWall = new shapes.Sphere()
{
Transform = transform.Translation(0, 0, 5)
* transform.RotationY(-Math.PI / 4)
* transform.RotationX(Math.PI / 2)
* transform.Scaling(10, 0.01, 10),
Material = floor.Material
};
var rightWall = new shapes.Sphere()
{
Transform = transform.Translation(0, 0, 5)
* transform.RotationY(Math.PI / 4)
* transform.RotationX(Math.PI / 2)
* transform.Scaling(10, 0.01, 10),
Material = floor.Material
};
var middle = new shapes.Sphere()
{
Transform = transform.Translation(-0.5, 1, 0.5),
Material = new RTF.Material(new RTF.Color(0.1, 1, 0.5), 0.7, 0.3)
};
var right = new shapes.Sphere()
{
Transform = transform.Translation(1.5, 0.5, -0.5) * transform.Scaling(0.5, 0.5, 0.5),
Material = new RTF.Material(new RTF.Color(0.5, 1, 0.1), 0.7, 0.3)
};
var left = new shapes.Sphere()
{
Transform = transform.Translation(-1.5, 0.33, -0.75) * transform.Scaling(0.33, 0.33, 0.33),
Material = new RTF.Material(new RTF.Color(1, 0.8, 0.1), 0.7, 0.3)
};
var world = new RTF.World
{
Lights = new List <RTF.Light>()
{
new RTF.Light(point.Point(-10, 10, -10), RTF.Color.White)
},
Objects = new List <shapes.Shape>()
{
floor, leftWall, rightWall, right, middle, right, left
}
};
var camera = new RTF.Camera(100, 50, Math.PI / 3)
{
Transform = transform.ViewTransform(
point.Point(0, 1.5, -5),
point.Point(0, 1, 0),
point.Vector(0, 1, 0))
};
return(RTF.Canvas.Render(camera, world));
}
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");
}