public ColorIntensity RayIntensity(SDScene scene, RayData data)
{
ColorIntensity color = new ColorIntensity();
float lightPass = LightPassValue(scene.ClosestDistance, data.Pos);
if (lightPass == 0f)
{
return(color);
}
Vec3f dir = (Pos - data.Pos).Normalized();
float diffuseDot = dir.Dot(data.Normal);
if (diffuseDot > 0f)
{
color += data.Mat.DiffuseIntensity * DiffuseIntensity * diffuseDot * lightPass;
Vec3f reflectionDir = 2f * dir.Dot(data.Normal) * data.Normal - dir;
Vec3f viewerDir = (data.RayOrigin - data.Pos).Normalized();
float specularDot = reflectionDir.Dot(viewerDir);
if (specularDot > 0f)
{
color += SpecularIntensity * data.Mat.Specular
* MathF.Pow(specularDot, data.Mat.Shininess) * lightPass;
}
}
return(color.AtDistance((Pos - data.Pos).Magnitude));
}
static void Main(string[] args)
{
ILight light = new PointLight(new Vec3f(4, -4, 2), // Light position
Color.White, // Light color
0.3f, // Diffuse intensity
0.3f, // Specular intensity
0.2f); // Softness
IBackground bg = new SolidBackground();
SDLighting lighting = new SDLighting(bg, // Lighting background
Color.White, // Ambient color
0.0001f, // Ambient color brightness
light); // Lights
Material ballMat = new Material(Color.Blue,
0.3f, // Diffuse constant
0.9f, // Specular constant
80f, // Shininess
1f); // Ambient constant
Material floorMat = new Material(Color.White,
0.1f, // Diffuse constant
0.05f, // Specular constant
30f, // Shininess
0.4f); // Ambient constant
SDSphere ball = new SDSphere(new Vec3f(), // Postion
1f, // Radius
ballMat); // Material
// Repeats ball infinitely in the X direction
var ballField = SDObject.RepeatX(ball, 0f, 5f);
// Repeats ball infinitely in the Y direction
ballField = SDObject.RepeatY(ballField, 0f, 5f);
SDObject floor = new SDDeepPlane(new Vec3f(0, 0, -1), // Position
new Vec3f(0, 0, 1), // Outward plane normal
floorMat); // Material
Camera cam = new Camera(1920, 1080);
cam.Pos = new Vec3f(0, -5, 2);
cam.LookAt(new Vec3f());
SDScene scene = new SDScene(cam, lighting, ballField, floor);
Renderer renderer = new Renderer(scene);
renderer.Render().Save(ImgPath + "example_img.png");
}