Color[] CreateColorForTestAntialiasing(int width, int height)
{
//视锥体的左下角、长宽和起始扫射点设定
Vector3 lowLeftCorner = new Vector3(-2, -1, -1);
Vector3 horizontal = new Vector3(4, 0, 0);
Vector3 vertical = new Vector3(0, 2, 0);
Vector3 original = new Vector3(0, 0, 0);
int l = width * height;
HitableList hitableList = new HitableList();
hitableList.list.Add(new Sphere(new Vector3(0, 0, -1), 0.5f));
hitableList.list.Add(new Sphere(new Vector3(0, -100.5f, -1), 100f));
Color[] colors = new Color[l];
Camera camera = new Camera(original, lowLeftCorner, horizontal, vertical);
float recip_width = 1f / width;
float recip_height = 1f / height;
for (int j = height - 1; j >= 0; j--)
{
for (int i = 0; i < width; i++)
{
Color color = new Color(0, 0, 0);
for (int s = 0; s < SAMPLE; s++)
{
Ray r = camera.CreateRay((i + Random.Range(0f, 1f)) * recip_width, (j + Random.Range(0f, 1f)) * recip_height);
color += GetColorForTestAntialiasing(r, hitableList);
}
color *= SAMPLE_WEIGHT;
color.a = 1f;
colors[i + j * width] = color;
}
}
return(colors);
}
HitableList GetRandomScene()
{
HitableList hitableList = new HitableList();
hitableList.list.Add(new Sphere(new Vector3(0, -1000, 0), 1000, new Lambertian(new Color(0.5f, 0.5f, 0.5f))));
for (int a = -11; a < 11; a++)
{
for (int b = -11; b < 11; b++)
{
float choose_mat = _M.R();
Vector3 center = new Vector3(a + 0.9f * _M.R(), 0.2f, b + 0.9f * _M.R());
if ((center - new Vector3(4, 0.2f, 0)).magnitude > 0.9f)
{
if (choose_mat < 0.8) //diffuse
{
hitableList.list.Add(new Sphere(center, 0.2f, new Lambertian(new Color(_M.R() * _M.R(), _M.R() * _M.R(), _M.R() * _M.R()))));
}
else if (choose_mat < 0.95) //metal
{
hitableList.list.Add(new Sphere(center, 0.2f, new Metal(new Color(0.5f * (1 + _M.R()), 0.5f * (1 + _M.R()), 0.5f * _M.R()))));
}
else //glass
{
hitableList.list.Add(new Sphere(center, 0.2f, new Dielectric(1.5f)));
}
}
}
}
hitableList.list.Add(new Sphere(new Vector3(0, 1, 0), 1.0f, new Dielectric(1.5f)));
hitableList.list.Add(new Sphere(new Vector3(-4, 1, 0), 1.0f, new Lambertian(new Color(0.4f, 0.2f, 0.1f))));
hitableList.list.Add(new Sphere(new Vector3(4, 1, 0), 1.0f, new Metal(new Color(0.7f, 0.6f, 0.5f), 0.0f)));
return(hitableList);
}
Color GetColorForTestAntialiasing(Ray ray, HitableList hitableList)
{
HitRecord record = new HitRecord();
if (hitableList.Hit(ray, 0f, float.MaxValue, ref record))
{
return(0.5f * new Color(record.normal.x + 1, record.normal.y + 1, record.normal.z + 1, 2));
}
float t = 0.5f * ray.normalDirection.y + 1f;
return((1 - t) * new Color(1, 1, 1) + t * new Color(0.5f, 0.7f, 1.0f));
}
Color GetColorForTestDiffusing(Ray ray, HitableList hitableList)
{
HitRecord record = new HitRecord();
if (hitableList.Hit(ray, 0.0001f, float.MaxValue, ref record))
{
Vector3 target = record.p + record.normal + GetRandomPointInUnitSphereForTestDiffusing();
//此处假定有50%的光被吸收，剩下的则从入射点开始取随机方向再次发射一条射线
return(0.5f * GetColorForTestDiffusing(new Ray(record.p, target - record.p), hitableList));
}
float t = 0.5f * ray.normalDirection.y + 1f;
return((1 - t) * new Color(1, 1, 1) + t * new Color(0.5f, 0.7f, 1f));
}
Color[] CreateColorForTestDefocus(int width, int height)
{
//视锥体的左下角、长宽和起始扫射点设定
//Vector3 lowLeftCorner = new Vector3(-2, -1, -1);
//Vector3 horizontal = new Vector3(4, 0, 0);
//Vector3 vertical = new Vector3(0, 2, 0);
//Vector3 original = new Vector3(0, 0, 0);
int l = width * height;
HitableList hitableList = new HitableList();
//这里注释的两句话是随机场景渲染用的
//HitableList hitableList = _M.CreateRandomScene();
hitableList.list.Add(new Sphere(new Vector3(0, 0, -1), 0.5f, new Lambertian(new Color(0.2f, 0.2f, 0.8f))));
hitableList.list.Add(new Sphere(new Vector3(0, -100.5f, -1f), 100f, new Lambertian(new Color(0.8f, 0.8f, 0.0f))));
hitableList.list.Add(new Sphere(new Vector3(1, 0, -1), 0.5f, new Metal(new Color(0.8f, 0.6f, 0.2f), 0.0f)));
hitableList.list.Add(new Sphere(new Vector3(-1, 0, -1), 0.5f, new Dielectric(1.5f)));
Color[] colors = new Color[l];
//Vector3 from = new Vector3(10f, 2f, -2);
//Vector3 to = new Vector3(0, 1, 0);
Vector3 from = new Vector3(0f, 1f, 2f);
Vector3 to = new Vector3(0, 0, 0);
Camera camera = new Camera(from, to, Vector3.up, 90, (float)width / height);
//Camera camera = new Camera(from, to, Vector3.up, 35, width / height);
float recip_widht = 1f / width;
float recip_height = 1f / height;
for (int j = height - 1; j >= 0; j--)
{
for (int i = 0; i < width; i++)
{
Color color = new Color(0, 0, 0);
for (int s = 0; s < SAMPLE; s++)
{
Ray r = camera.CreateRay((i + _M.R()) * recip_widht, (j + _M.R()) * recip_height);
color += GetColorForTestDefocus(r, hitableList, 0);
}
color *= SAMPLE_WEIGHT;
//为了使球体看起来更亮，改变gamma值
color = new Color(Mathf.Sqrt(color.r), Mathf.Sqrt(color.g), Mathf.Sqrt(color.b), 1f);
color.a = 1f;
colors[i + j * width] = color;
}
EditorUtility.DisplayProgressBar("", "", j / (float)height);
}
EditorUtility.ClearProgressBar();
return(colors);
}
Color[] CreateColorForTestScene(int width, int height)
{
//视锥体的左下角、长宽和起始扫射点设定
//Vector3 lowLeftCorner = new Vector3(-2, -1, -1);
//Vector3 horizontal = new Vector3(4, 0, 0);
//Vector3 vertical = new Vector3(0, 2, 0);
//Vector3 original = new Vector3(0, 0, 0);
int l = width * height;
//HitableList hitableList = new HitableList();
//这里注释的两句话是随机场景渲染用的
//HitableList hitableList = _M.CreateRandomScene();
HitableList hitableList = GetRandomScene();
Color[] colors = new Color[l];
//Vector3 from = new Vector3(10f, 2f, -2);
//Vector3 to = new Vector3(0, 1, 0);
Vector3 from = new Vector3(13f, 2f, 3f);
Vector3 to = new Vector3(0, 0, 0);
Camera camera = new Camera(from, to, Vector3.up, 20, width / height, 0.0f, 0.7f * (from - to).magnitude);
//Camera camera = new Camera(from, to, Vector3.up, 35, width / height);
float recip_widht = 1f / width;
float recip_height = 1f / height;
for (int j = height - 1; j >= 0; j--)
{
for (int i = 0; i < width; i++)
{
Color color = new Color(0, 0, 0);
for (int s = 0; s < SAMPLE; s++)
{
Ray r = camera.CreateRay((i + _M.R()) * recip_widht, (j + _M.R()) * recip_height);
color += GetColorForTestDefocus(r, hitableList, 0);
}
color *= SAMPLE_WEIGHT;
//为了使球体看起来更亮，改变gamma值
color = new Color(Mathf.Sqrt(color.r), Mathf.Sqrt(color.g), Mathf.Sqrt(color.b), 1f);
color.a = 1f;
colors[i + j * width] = color;
EditorUtility.DisplayProgressBar("", "", (float)(i + j * width) / (float)l);
}
}
EditorUtility.ClearProgressBar();
return(colors);
}
Color[] CreateColorForTestDielectric(int width, int height)
{
//视锥体的左下角，长宽和起始扫射点设定
Vector3 lowLeftCorner = new Vector3(-2, -1, -1);
Vector3 horizontal = new Vector3(4, 0, 0);
Vector3 vertical = new Vector3(0, 2, 0);
Vector3 original = new Vector3(0, 0, 0);
int l = width * height;
HitableList hitalbeList = new HitableList();
hitalbeList.list.Add(new Sphere(new Vector3(0, 0, -1), 0.5f, new Lambertian(new Color(0.1f, 0.2f, 0.5f))));
hitalbeList.list.Add(new Sphere(new Vector3(0, -100.5f, -1), 100f, new Lambertian(new Color(0.8f, 0.8f, 0.0f))));
hitalbeList.list.Add(new Sphere(new Vector3(1, 0, -1), 0.5f, new Metal(new Color(0.8f, 0.6f, 0.2f), 0.0f)));
hitalbeList.list.Add(new Sphere(new Vector3(-1, 0, -1), 0.5f, new Dielectric(1.5f)));
hitalbeList.list.Add(new Sphere(new Vector3(-1, 0, -1), -0.45f, new Dielectric(1.5f)));
Color[] colors = new Color[l];
Camera camera = new Camera(original, lowLeftCorner, horizontal, vertical);
//Camera camera = new Camera(45, 2);
//Camera camera = new Camera(new Vector3(-2, 2, -1), new Vector3(0, 0, -1), new Vector3(0, 1, 0), 90, 2);
float recip_width = 1f / width;
float recip_height = 1f / height;
for (int j = height - 1; j >= 0; j--)
{
for (int i = 0; i < width; i++)
{
Color color = new Color(0, 0, 0);
for (int s = 0; s < SAMPLE; s++)
{
Ray r = camera.CreateRay((i + _M.R()) * recip_width, (j + _M.R()) * recip_height);
color += GetColorForTestDielectric(r, hitalbeList, 0);
}
color *= SAMPLE_WEIGHT;
//为了使球体看起来更亮，改变gamma值
color = new Color(Mathf.Sqrt(color.r), Mathf.Sqrt(color.g), Mathf.Sqrt(color.b), 1f);
color.a = 1;
colors[i + j * width] = color;
}
}
return(colors);
}
Color[] CreateColorForTestMetal(int width, int height)
{
//视锥体的左下角，长宽和起始扫射设定
Vector3 lowLeftCorner = new Vector3(-2, -1, -1);
Vector3 horizontal = new Vector3(4, 0, 0);
Vector3 vertical = new Vector3(0, 2, 0);
Vector3 original = new Vector3(0, 0, 0);
int l = width * height;
HitableList hitableList = new HitableList();
hitableList.list.Add(new Sphere(new Vector3(0, 0, -1), 0.5f, new Lambertian(new Color(0.8f, 0.3f, 0.3f))));
hitableList.list.Add(new Sphere(new Vector3(0, -100.5f, -1), 100f, new Lambertian(new Color(0.8f, 0.8f, 0.0f))));
hitableList.list.Add(new Sphere(new Vector3(1, 0, -1), 0.5f, new Metal(new Color(0.8f, 0.6f, 0.2f), 1.0f)));
hitableList.list.Add(new Sphere(new Vector3(-1, 0, -1), 0.5f, new Metal(new Color(0.8f, 0.8f, 0.8f), 0.3f)));
Color[] colors = new Color[l];
Camera camera = new Camera(original, lowLeftCorner, horizontal, vertical);
float recip_width = 1f / width;
float recip_height = 1f / height;
for (int j = height - 1; j >= 0; j--)
{
for (int i = 0; i < width; i++)
{
Color color = new Color(0, 0, 0);
for (int s = 0; s < SAMPLE; s++)
{
Ray r = camera.CreateRay((i + Random.Range(0f, 1f)) * recip_width, (j + Random.Range(0f, 1f)) * recip_height);
color += GetColorForTestMetal(r, hitableList, 0);
}
color *= SAMPLE_WEIGHT;
//为了使球体看起来更亮，改变gamma值
color = new Color(Mathf.Sqrt(color.r), Mathf.Sqrt(color.g), Mathf.Sqrt(color.b), 1f);
color.a = 1f;
colors[i + j * width] = color;
}
}
Debug.Log("RayTracing time: %l" + m_rayTimes.ToString());
return(colors);
}
Color GetColorForTestDefocus(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 = GetColorForTestDefocus(r, hitableList, depth + 1);
return(new Color(c.r * attenuation.r, c.g * attenuation.g, c.b * attenuation.b));
}
else
{
//假设已经反射了太多次，或者压根就没有发生反射，那么就认为黑了
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, 1f));
}
Color[] CreateColorForTestHitRecord(int width, int height)
{
//视锥体的左下角，长宽和起始扫射点设定
Vector3 lowLeftCorner = new Vector3(-2, -1, -1);
Vector3 horizontal = new Vector3(4, 0, 0);
Vector3 vertical = new Vector3(0, 2, 0);
Vector3 original = new Vector3(0, 0, 0);
int l = width * height;
HitableList hitableList = new HitableList();
hitableList.list.Add(new Sphere(new Vector3(0, 0, -1), 0.5f));
hitableList.list.Add(new Sphere(new Vector3(0, -100.5f, -1), 100));
Color[] colors = new Color[l];
for (int j = height - 1; j >= 0; j--)
{
for (int i = 0; i < width; i++)
{
Ray r = new Ray(original, lowLeftCorner + horizontal * i / (float)width + vertical * j / (float)height);
colors[i + j * width] = GetColorForTestHitRecord(r, hitableList);
}
}
return(colors);
}
