public static IBasicShape MapApiToDomain(ShapeDto input)
{
IBasicShape output = null;
switch (input.Type)
{
case ShapeDto.ShapeType.Sphere:
// TODO: worth normalizing Shape instantiation e.g. new()
output = Sphere.CreateDefaultInstance();
break;
case ShapeDto.ShapeType.Plane:
output = new Plane();
break;
default:
throw new ArgumentOutOfRangeException(nameof(input.Type), "Unrecognized shape type: " + input.Type);
}
if (input.Material != null)
{
output.Material = MaterialFactory.MapApiToDomain(input.Material);
}
if (input.Transformations != null && input.Transformations.Any())
{
foreach (var transform in input.Transformations)
{
var domainTransformAction = TransformationFactory.MapApiTransformToDomainAction(transform);
domainTransformAction(output.Transformation);
}
}
return(output);
}
private void InitializationValues_SetupDefaultWorld_Overload(float?fixedAmbient = null)
{
_outerSphere = Sphere.CreateDefaultInstance();
_innerSphere = Sphere.CreateDefaultInstance();
_outerSphere
.UpdateColor(Color.FromScRgb(Material.DefaultColorA, 0.8F, 1.0F, 0.6F))
.UpdateDiffuse(0.7F)
.UpdateSpecular(0.2F)
.UpdateAmbient(fixedAmbient ?? _outerSphere.Material.Ambient);
_innerSphere
.UpdateAmbient(fixedAmbient ?? _innerSphere.Material.Ambient);
// As feature file: concentric circles with inner sphere scaled down.
_innerSphere.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(0.5F, 0.5F, 0.5F));
_world = new World(
new List <IBasicShape> {
_outerSphere, _innerSphere
},
new Model.Light
{
Position = new Vector4(-10.0F, 10.0F, -10.0F, 1.0F),
Intensity = Color.White
}
);
}
private static World CreateDefaultWorldLarger()
{
var outerSphere = Sphere.CreateDefaultInstance();
var innerSphere = Sphere.CreateDefaultInstance();
outerSphere
.UpdateColor(Color.FromScRgb(Material.DefaultColorA, 0.8F, 1.0F, 0.6F))
.UpdateDiffuse(0.7F)
.UpdateSpecular(0.2F);
// As feature file: concentric circles with inner sphere scaled down.
innerSphere.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(10.0F, 10.0F, 10.0F));
innerSphere.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(5.0F, 5.0F, 5.0F));
return(new World(
new List <IBasicShape> {
outerSphere, innerSphere
},
new Domain.Model.Light
{
Position = new Vector4(-30.0F, 30.0F, -30.0F, 1.0F),
Intensity = Color.White
}
));
}
public static void DrawSphere(string outputBitmapFilePath, IMatrixTransformationBuilder transformation)
{
// Rough and ready. Fully following the pseudocode from the text.
// Basically:
// For each pixel on the canvas, figure out the ray (direction) from there
// back to the origin of the emitting ray (light source).
// Then calculate the hit (first intersection), if any. If it's a hit then
// that pixel on the canvas gets drawn.
// The rest of the code is just pixel conversion e.g. determining what "1"
// represents in terms of numbers of pixels and also converting the half above /
// half below of the sphere to a non-negative set of pixels for drawing.
// inputs: could encapsulate in class to cleanup the code.
var ray_origin = new Vector4(0F, 0F, -5F, 1F);
var wall_z = 10F;
var wall_size = 7.0F;
IBasicShape shape = Sphere.CreateDefaultInstance();
shape.Transformation = transformation;
#pragma warning disable CS0618 // Type or member is obsolete
var xs = new SceneIntersectionCalculator(new List <IBasicShape> {
shape
});
#pragma warning restore CS0618 // Type or member is obsolete
var canvas_pixels = 100;
var pixel_size = wall_size / canvas_pixels;
var half = wall_size / 2;
var color = Color.FromScRgb(1.0F, 0.0F, 0.0F, 1.0F).Simplify();
using var canvas = new System.Drawing.Bitmap(canvas_pixels, canvas_pixels);
for (int y = 0; y < canvas_pixels; y++)
{
var world_y = half - pixel_size * y;
for (int x = 0; x < canvas_pixels; x++)
{
var world_x = -half + pixel_size * x;
var position = new Vector4(world_x, world_y, wall_z, 1F);
var r = new Domain.Model.Ray(
ray_origin,
Vector4.Normalize(position - ray_origin));
if (xs.CalculateHit(r).HasValue)
{
canvas.SetPixel(x, y, color);
}
}
}
canvas.Save(outputBitmapFilePath);
}
public static SceneDto GetSphereCentralWithPlanesExample()
{
// Templates
var defaultSphere = Sphere.CreateDefaultInstance();
var defaultMaterial = Material.CreateDefaultInstance();
var white = Color.White;
// Copying ReRenderSphereCentralWithPlanes code using serializable DTOs.
// Planes
var floor = new ShapeDto
{
Type = ShapeDto.ShapeType.Plane,
Material = new MaterialDto
{
Color = new ColorDto
{
A = Material.DefaultColorA,
R = 1F,
G = 0.9F,
B = 0.9F
},
Specular = 0F,
Ambient = defaultMaterial.Ambient,
Diffuse = defaultMaterial.Diffuse,
Shininess = defaultMaterial.Shininess
}
};
var left_wall = new ShapeDto
{
Type = ShapeDto.ShapeType.Plane,
Material = floor.Material,
Transformations = new List <TransformDto>
{
new TransformDto
{
TransformType = TransformDto.TransformationType.RotateX,
RotationRadians = MathF.PI / 2
},
new TransformDto
{
TransformType = TransformDto.TransformationType.RotateY,
RotationRadians = -MathF.PI / 4
},
new TransformDto
{
TransformType = TransformDto.TransformationType.Translate,
VectorTransformation = new VectorDto
{
X = 0F, Y = 0F, Z = 5F
}
}
}
};
var right_wall = new ShapeDto
{
Type = ShapeDto.ShapeType.Plane,
Material = floor.Material,
Transformations = new List <TransformDto>
{
new TransformDto
{
TransformType = TransformDto.TransformationType.RotateX,
RotationRadians = MathF.PI / 2
},
new TransformDto
{
TransformType = TransformDto.TransformationType.RotateY,
RotationRadians = MathF.PI / 4
},
new TransformDto
{
TransformType = TransformDto.TransformationType.Translate,
VectorTransformation = new VectorDto
{
X = 0F, Y = 0F, Z = 5F
}
}
}
};
// Spheres
var middle = new ShapeDto
{
Type = ShapeDto.ShapeType.Sphere,
Material = new MaterialDto
{
Color = new ColorDto
{
A = Material.DefaultColorA,
R = 0.1F,
G = 1F,
B = 0.5F
},
Diffuse = 0.7F,
Specular = 0.3F,
Ambient = defaultMaterial.Ambient,
Shininess = defaultMaterial.Shininess
},
Transformations = new List <TransformDto>
{
new TransformDto
{
TransformType = TransformDto.TransformationType.Translate,
VectorTransformation = new VectorDto
{
X = -0.5F, Y = 1F, Z = 0.5F
}
}
}
};
var right = new ShapeDto
{
Type = ShapeDto.ShapeType.Sphere,
Material = new MaterialDto
{
Color = new ColorDto
{
A = Material.DefaultColorA,
R = 0.5F,
G = 1F,
B = 0.1F
},
Diffuse = 0.7F,
Specular = 0.3F,
Ambient = defaultMaterial.Ambient,
Shininess = defaultMaterial.Shininess
},
Transformations = new List <TransformDto>
{
new TransformDto
{
TransformType = TransformDto.TransformationType.Scale,
VectorTransformation = new VectorDto
{
X = 0.5F, Y = 0.5F, Z = 0.5F
}
},
new TransformDto
{
TransformType = TransformDto.TransformationType.Translate,
VectorTransformation = new VectorDto
{
X = 1.5F, Y = 0.5F, Z = -0.5F
}
}
}
};
var left = new ShapeDto
{
Type = ShapeDto.ShapeType.Sphere,
Material = new MaterialDto
{
Color = new ColorDto
{
A = Material.DefaultColorA,
R = 1F,
G = 0.8F,
B = 0.1F
},
Diffuse = 0.7F,
Specular = 0.3F,
Ambient = defaultMaterial.Ambient,
Shininess = defaultMaterial.Shininess
},
Transformations = new List <TransformDto>
{
new TransformDto
{
TransformType = TransformDto.TransformationType.Scale,
VectorTransformation = new VectorDto
{
X = 0.33F, Y = 0.33F, Z = 0.33F
}
},
new TransformDto
{
TransformType = TransformDto.TransformationType.Translate,
VectorTransformation = new VectorDto
{
X = -1.5F, Y = 0.33F, Z = -0.75F
}
}
}
};
// Scene - pull together shapes into root serializable object
// Use low res until happy, then crank up. Takes a lot of clock cycles!
#pragma warning disable CS0219 // Variable is assigned but its value is never used
int high = 1000;
int medium = 500;
int low = 250;
int res = medium;
#pragma warning restore CS0219 // Variable is assigned but its value is never used
var scene = new SceneDto
{
Shapes = new List <ShapeDto>
{
floor, left_wall, right_wall,
left, middle, right
},
LightSource = new LightDto
{
Position = new VectorDto
{
X = -10F,
Y = 10F,
Z = -10F
},
Intensity = new ColorDto
{
A = white.ScA,
R = white.ScR,
G = white.ScG,
B = white.ScB
}
},
Camera = new CameraDto
{
HSize = res,
VSize = res / 2,
FieldOfView = MathF.PI / 3,
From = new VectorDto {
X = 0F, Y = 1.5F, Z = -5F
},
To = new VectorDto {
X = 0F, Y = 1F, Z = 0F
},
Up = new VectorDto {
X = 0F, Y = 1F, Z = 0F
}
}
};
return(scene);
}
public void InitializationValues_SetOnSphereInstance()
{
_sphereInstance = Sphere.CreateDefaultInstance(false);
}
public static void RenderSphereCentral(string outputBitmapFilePath, bool useAcneEffect = false)
{
// Define world
var floor = Sphere.CreateDefaultInstance();
floor.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(10F, 0.01F, 10F));
floor.UpdateColor(Color.FromScRgb(Material.DefaultColorA, 1F, 0.9F, 0.9F))
.UpdateSpecular(0F);
var left_wall = Sphere.CreateDefaultInstance();
left_wall.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(10F, 0.01F, 10F))
.RotateX(MathF.PI / 2)
.RotateY(-MathF.PI / 4)
.Translate(new Vector3(0F, 0F, 5F))
;
left_wall.Material = floor.Material;
var right_wall = Sphere.CreateDefaultInstance();
right_wall.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(10F, 0.01F, 10F))
.RotateX(MathF.PI / 2)
.RotateY(MathF.PI / 4)
.Translate(new Vector3(0F, 0F, 5F))
;
right_wall.Material = floor.Material;
var middle = Sphere.CreateDefaultInstance();
middle.Transformation = new MatrixTransformationBuilder()
.Translate(new Vector3(-0.5F, 1F, 0.5F));
middle.UpdateColor(Color.FromScRgb(Material.DefaultColorA, 0.1F, 1F, 0.5F))
.UpdateDiffuse(0.7F)
.UpdateSpecular(0.3F);
var right = Sphere.CreateDefaultInstance();
right.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(0.5F, 0.5F, 0.5F))
.Translate(new Vector3(1.5F, 0.5F, -0.5F))
;
right.UpdateColor(Color.FromScRgb(Material.DefaultColorA, 0.5F, 1F, 0.1F))
.UpdateDiffuse(0.7F)
.UpdateSpecular(0.3F);
var left = Sphere.CreateDefaultInstance();
left.Transformation = new MatrixTransformationBuilder()
.Scale(new Vector3(0.33F, 0.33F, 0.33F))
.Translate(new Vector3(-1.5F, 0.33F, -0.75F))
;
left.UpdateColor(Color.FromScRgb(Material.DefaultColorA, 1F, 0.8F, 0.1F))
.UpdateDiffuse(0.7F)
.UpdateSpecular(0.3F);
var world = new World(new List <IBasicShape>
{
floor, left_wall, right_wall,
left, middle, right
},
new Light
{
Position = new Vector4(-10.0F, 10.0F, -10.0F, 1.0F),
Intensity = Color.White
});
// Use low res until happy, then crank up. Takes a lot of clock cycles!
#pragma warning disable CS0219 // Variable is assigned but its value is never used
int high = 1000;
int medium = 500;
int low = 250;
int res = medium;
#pragma warning restore CS0219 // Variable is assigned but its value is never used
var camera = new Camera(res, res / 2, MathF.PI / 3);
camera.SetViewTransformation(
from: new Vector4(0F, 1.5F, -5F, 1F),
to: new Vector4(0F, 1F, 0F, 1F),
up: new Vector4(0F, 1F, 0F, 0F)
);
// Render image
using var canvas = new System.Drawing.Bitmap(camera.HorizontalSize, camera.VerticalSize);
for (int y = 0; y < camera.VerticalSize - 1; y++)
{
for (int x = 0; x < camera.HorizontalSize - 1; x++)
{
var ray = camera.GetRay(x, y);
Color color = Lighting.CalculateColorWithPhongReflection(world, ray, useAcneEffect);
canvas.SetPixel(x, y, color.Simplify(255));
}
}
canvas.Save(outputBitmapFilePath);
}
