static Color GetColorFromHitRecord(Ray ray, HitableList list)
{
var rec = new HitRecord();
if (list.Hit(ray, 0.001f, float.MaxValue, ref rec))
{
var target = rec.Point + rec.Normal + RayTraceUtility.GetRandomPointInUnitSphere();
return(0.5f * GetColorFromHitRecord(new Ray(rec.Point, target - rec.Point), list));
}
var t = (ray.NormalizedDirection.y + 1f) * 0.5f;
return((1 - t) * Color.white + t * new Color(0.5f, 0.7f, 1f));
}
static Color GetColorForTestMetal(Ray ray, HitableList hitableList, int depth)
{
HitRecord record = new HitRecord();
if (hitableList.Hit(ray, 0.0001f, float.MaxValue, ref record))
{
Ray r = new Ray(Vector3.zero, Vector3.zero);
Color attenuation = Color.black;
if (depth < MAX_SCATTER_TIME && record.material.Scatter(ray, record, ref attenuation, ref r))
{
Color c = GetColorForTestMetal(r, hitableList, depth + 1);
return(new Color(c.r * attenuation.r, c.g * attenuation.g, c.b * attenuation.b));
}
return(Color.black);
}
float t = 0.5f * ray.normalDirection.y + 1f;
return((1 - t) * new Color(1, 1, 1) + t * new Color(0.5f, 0.7f, 1));
}
static Color GetColorFromHitRecord(Ray ray, HitableList list, int depth)
{
var record = new HitRecord();
if (list.Hit(ray, 0.001f, float.MaxValue, ref record))
{
var scatterdRay = new Ray(Vector3.zero, Vector3.zero);
var attenuation = Color.black;
if (depth < MaxDepth && record.Material.Scatter(ray, record, ref attenuation, ref scatterdRay))
{
var c = GetColorFromHitRecord(scatterdRay, list, depth + 1);
return(new Color(c.r * attenuation.r, c.g * attenuation.g, c.b * attenuation.b));
}
else
{
return(Color.black);
}
}
var t = (ray.NormalizedDirection.y + 1f) * 0.5f;
return((1 - t) * Color.white + t * new Color(0.5f, 0.7f, 1f));
}
