private static void Main()
{
var start = Tuple.Point(0, 1, 0);
var velocity = Tuple.Vector(1f, 1.8f, 0f).Normalise() * 11.25f;
var p = new Projectile(start, velocity);
var gravity = Tuple.Vector(0, -0.1f, 0);
var wind = Tuple.Vector(-0.01f, 0, 0);
var e = new Environment(gravity, wind);
const int height = 500;
var c = new Canvas(900, height);
var c1 = new Color(0, 1, 0);
while (p.Position.Y <= 500 && p.Position.Y >= 0)
{
Console.WriteLine(p.Position);
c.WriteColor(Convert.ToInt32(Math.Ceiling(p.Position.X)),
height - Convert.ToInt32(Math.Ceiling(p.Position.Y)),
c1);
p = Tick(e, p);
}
File.WriteAllText("exercise.ppm", c.CreatePPMLines());
}
static void Main()
{
var rayOrigin = Tuple.Point(0, 0, -5);
const float wallZ = 10f;
const float wallSize = 7f;
const int canvasPixels = 100;
const float pixelSize = wallSize / canvasPixels;
const float half = wallSize / 2;
var canvas = new Canvas(canvasPixels, canvasPixels);
var shape = new Sphere {
Material = new Material {
Color = new Color(1, 0.2f, 1)
}
};
var lightPosition = Tuple.Point(-10, 10, -10);
var lightColor = new Color(1, 1, 1);
var light = new Light(lightPosition, lightColor);
for (var y = 0; y < canvasPixels; y++)
{
var worldY = half - pixelSize * y;
for (var x = 0; x < canvasPixels; x++)
{
var worldX = -half + pixelSize * x;
var position = Tuple.Point(worldX, worldY, wallZ);
var r = new Ray(rayOrigin, (position - rayOrigin).Normalise());
var hit = shape.Intersections(r).Hit();
if (hit == null)
{
continue;
}
var point = r.Position(hit.T);
var normal = hit.Object.NormalAt(point);
var color = hit.Object.Material.Lighting(light, point, r.Direction.Normalise(), normal);
Console.WriteLine("Hit");
canvas.WriteColor(x, y, color);
}
}
File.WriteAllText("exercise6.ppm", canvas.CreatePPMLines());
}
static void Main()
{
var rayOrigin = Tuple.Point(0, 0, -5);
const float wallZ = 10f;
const float wallSize = 7f;
const int canvasPixels = 100;
const float pixelSize = wallSize / canvasPixels;
const float half = wallSize / 2;
var canvas = new Canvas(canvasPixels, canvasPixels);
var color = new Color(1, 0, 0);
var shape = new Sphere {
Transform = Matrix.Scaling(1, 0.5f, 1)
};
//var shape = new Sphere {Transform = Matrix.Scaling(0.5f, 1, 1)};
//var shape = new Sphere {Transform = Matrix.Scaling(0.5f, 1, 1)};
//var shape = new Sphere {Transform = Matrix.Identity.Rotate_Z(MathF.PI / 4).Scaling(0.5f, 1, 1)};
//var shape = new Sphere {Transform = Matrix.Shearing(1f, 0, 0,0,0,0).Scaling(0.5f,1,1)};
for (var y = 0; y < canvasPixels; y++)
{
var worldY = half - pixelSize * y;
for (var x = 0; x < canvasPixels; x++)
{
var worldX = -half + pixelSize * x;
var position = Tuple.Point(worldX, worldY, wallZ);
var r = new Ray(rayOrigin, (position - rayOrigin).Normalise());
var xs = shape.Intersections(r);
Console.WriteLine($"World X {worldX}, WorldY {worldY}, Intersections Count {xs.Count}");
if (xs.Hit() == null)
{
continue;
}
Console.WriteLine("Hit");
canvas.WriteColor(x, y, color);
}
}
File.WriteAllText("exercise5.ppm", canvas.CreatePPMLines());
}
public static Tuple ComputePoint(int hour)
{
var r = Matrix.Identity.Rotate_Y(hour * MathF.PI / 6f);
return(r * Tuple.Point(0, 0, 1));
}