本文整理汇总了C#中Normal类的典型用法代码示例。如果您正苦于以下问题：C# Normal类的具体用法？C# Normal怎么用？C# Normal使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
Normal类属于命名空间，在下文中一共展示了Normal类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Sample_f
public override void Sample_f(ref Vector wo, ref Normal N, ref Normal shadeN, ref RgbSpectrum in_f, float u0, float u1, float u2, ref SurfaceTextureData surfaceData, out BsdfSampleData result)
{
result.Lambda = 0f;
Vector dir = MC.CosineSampleHemisphere(u0, u1);
result.Pdf = dir.z * MathLab.INVPI;
result.Type = BrdfType.Diffuse | BrdfType.Refractive;
Vector v1, v2;
Normal n = -N;
Vector.CoordinateSystem(ref n, out v1, out v2);
dir = new Vector(
v1.x * dir.x + v2.x * dir.y + n.x * dir.z,
v1.y * dir.x + v2.y * dir.y + n.y * dir.z,
v1.z * dir.x + v2.z * dir.y + n.z * dir.z);
var wi = dir;
float dp = (Normal.AbsDot(ref n, ref wi));
// Using 0.01 instead of 0.0 to cut down fireflies
if (dp <= 0.0001f)
{
result.Pdf /= 1000f;
// return new RgbSpectrum(0f);
}
else
{
result.Pdf /= dp;
}
result.F= KdOverPI;
result.Wi = wi;
}示例2: f
public override void f(ref Vector lwo, ref Vector lwi, ref Normal N, ref RgbSpectrum in_fs, out RgbSpectrum fs)
{
CreateFrame(ref N);
var wi = WorldToLocal(ref lwi);
var wo = WorldToLocal(ref lwo);
EvalBrdf(ref wo, ref wi, ref N, out fs);
}示例3: Sample_f
public override void Sample_f(ref Vector wo, ref Normal N, ref Normal shadeN, ref RgbSpectrum in_f, float u0, float u1, float u2, ref SurfaceTextureData surfaceData, out BsdfSampleData result) {
EvalParams(ref surfaceData);
bool into = (Normal.Dot(ref N, ref shadeN) > 0f);
result = new BsdfSampleData();
result.Type = this.Type;
if (!into) {
// No internal reflections
result.Wi = (-wo);
result.Pdf = 1f;
result.Type = reflectionSpecularBounce ? BrdfType.Specular : BrdfType.Glossy;
result.F = Krefl;
}
else {
// RR to choose if reflect the ray or go trough the glass
float comp = u0 * totFilter;
if (comp > transFilter) {
Vector mwo = -wo;
result.Wi = mwo - (2f * Vector.Dot(ref N, ref mwo)) * N.ToVec();
result.Pdf = reflPdf;
result.Type = reflectionSpecularBounce ? BrdfType.Specular : BrdfType.Glossy;
result.F = Krefrct;
}
else {
result.Wi = -wo;
result.Pdf = transPdf;
result.F = Krefrct;
result.Type = transmitionSpecularBounce ? BrdfType.Specular : BrdfType.Glossy;
}
}
}示例4: EvalBrdf
private void EvalBrdf(ref Vector wo, ref Vector wi, ref Normal N, out RgbSpectrum fs)
{
float cosThetaO = Vector.AbsDot(ref N, ref wo);
//AbsCosTheta(wo);
float cosThetaI = Vector.AbsDot(ref N, ref wi);
//AbsCosTheta(wi);
if (Math.Abs(cosThetaI - 0f) < Epsilon || Math.Abs(cosThetaO - 0f) < Epsilon)
{
fs = new RgbSpectrum(0f, 0f, 0f);
return;
//return new RgbSpectrum(1f, 0f, 0f);
}
Vector wh = wi + wo;
if (wh.IsZero())
{
fs = new RgbSpectrum(0f);
return;
}
//return new RgbSpectrum(1f, 0f, 0f);
wh = wh.Normalize();
float cosThetaH = Vector.Dot(ref wi, ref wh);
var F = fresnel.Evaluate(cosThetaH);
fs = (R0 * distr.D(ref wh) * G(ref N, ref wo, ref wi, ref wh) * F / (4f * cosThetaI * cosThetaO));
}示例5: Sample
public override void Sample(ref Vector wi, ref Normal n, float u0, float u1, float lambda, out Vector dir, out float f)
{
var nl = n.ToVec();
dir = Geometry.Reflect(ref wi, ref n);
//new Vector(wi - nl * 2f * nl&wi);
f = 1f;
}示例6: Update
// Update is called once per frame
void Update()
{
if (!_fadeInDone)
{
_lerp += Time.deltaTime / Duration;
_renderer.material.color = Color.Lerp(_startColor, _endColor, _lerp);
if (_lerp >= 1)
{
_fadeInDone = true;
}
}
if (_fadeOut)
{
_lerp += Time.deltaTime / Duration;
_renderer.material.color = Color.Lerp(_endColor, _startColor, _lerp);
if (_lerp >= 1)
{
Destroy(gameObject);
}
}
Vector3 up = _transform.InverseTransformDirection(Vector3.up);
Closest = new Normal() { Value = -1, Direction = new Vector3(99, 99, 99) };
float angle = 360;
foreach (var normal in _normals)
{
var a = Vector3.Angle(normal.Direction, up);
if (a < angle)
{
Closest = normal;
angle = a;
}
}
}示例7: GlossyReflection
public static Vector GlossyReflection(Vector wo, float exponent, Normal shadN, float u0, float u1) {
var shadeN = shadN;
float phi = 2f * MathLab.M_PI * u0;
float cosTheta = (float)MathLab.Pow(1f - u1, exponent);
float sinTheta = MathLab.Sqrt(1f - cosTheta * cosTheta);
float x = (float)Math.Cos(phi) * sinTheta;
float y = (float)Math.Sin(phi) * sinTheta;
float z = cosTheta;
Vector dir = -wo;
float dp = Vector.Dot(ref shadeN, ref dir);
Vector w = dir - (2f * dp) * shadeN.ToVec();
Vector u;
if (Math.Abs(shadeN.x) > .1f) {
var a = new Vector(0f, 1f, 0f);
u = Vector.Cross(ref a, ref w);
}
else {
Vector a = new Vector(1f, 0f, 0f);
u = Vector.Cross(ref a, ref w);
}
u = u.Normalize();
Vector v = Vector.Cross(ref w, ref u);
return x * u + y * v + z * w;
}示例8: EvaluateShadow
public void EvaluateShadow(ref Point point, ref Normal n, float u0, float u1, float u2, ref LightSample[] result, float ltProb = 0f)
{
switch (scene.LightSamplingStrategy)
{
case LightSamplingStrategy.UniformOneLight:
if (result == null)
result = new LightSample[scene.ShadowRaysPerSample];
for (int i = 0; i < scene.ShadowRaysPerSample; i++)
{
int currentLightIndex = scene.SampleLights(ltProb <= 0f ? rnd.NextFloat() : ltProb);
var light = scene.Lights[currentLightIndex];
var ls = result[i]??new LightSample();
ls.LightIndex = currentLightIndex;
light.EvaluateShadow(ref point, ref n, u0, u1, u2, ref ls);
//ls.Pdf *= (scene.ShadowRaysPerSample);
result[i] = ls;
}
break;
case LightSamplingStrategy.UniformAllLights:
{
var sm = new List<LightSample>();
foreach (var light in scene.Lights)
{
var ls = new LightSample();
light.EvaluateShadow(ref point, ref n, u0, u1, u2, ref ls);
if (ls.Pdf > 0f)
sm.Add(ls);
}
result = sm.ToArray();
}
break;
}
}示例9: Sample_f
public override void Sample_f(ref Vector wo, ref Normal geoNormal, ref Normal shadeN, float lambda, ref SurfaceTextureData surfaceData, float u0, float u1, float u2, out BsdfSampleData result)
{
EvalParams(ref surfaceData, lambda);
Vector dir =
MC.CosineSampleHemisphere(u0, u1);
result = new BsdfSampleData { Pdf = dir.z*MathLab.INVPI, Type = BrdfType.Diffuse}; // TODO Lambda weight
Vector v1, v2;
Normal n = geoNormal;
Vector.CoordinateSystem(ref n, out v1, out v2);
dir = new Vector(
v1.x * dir.x + v2.x * dir.y + n.x * dir.z,
v1.y * dir.x + v2.y * dir.y + n.y * dir.z,
v1.z * dir.x + v2.z * dir.y + n.z * dir.z);
var wi = dir;
float dp = (Normal.Dot(ref shadeN, ref wi));
// Using 0.01 instead of 0.0 to cut down fireflies
if (dp <= 0.0001f)
{
result.Pdf = 0f;
result.F = new RgbSpectrum();
result.Lambda = 0f;
}
else
{
result.Pdf /= dp;
result.F = surfaceData.Diffuse * MathLab.INVPI;
result.Lambda = Kd.Sample(lambda)*MathLab.INVPI;
}
result.Wi = wi;
}示例10: Sample_f
public override void Sample_f(ref Vector wo, ref Normal N, ref Normal shadeN, ref RgbSpectrum in_f, float u0, float u1, float u2, ref SurfaceTextureData surfaceData, out BsdfSampleData result)
{
result.Lambda = 0f;
Vector dir =
MC.CosineSampleHemisphere(u0, u1);
result.Pdf = dir.z * MathLab.INVPI;
result.Type = BrdfType.Diffuse;
Vector v1, v2;
Normal n = N;
Vector.CoordinateSystem(ref n, out v1, out v2);
dir = new Vector(
v1.x * dir.x + v2.x * dir.y + n.x * dir.z,
v1.y * dir.x + v2.y * dir.y + n.y * dir.z,
v1.z * dir.x + v2.z * dir.y + n.z * dir.z);
var wi = dir;
float dp = (Normal.Dot(ref shadeN, ref wi));
if (dp <= 0.01f)
{
result.Pdf = 0f;
result.F = new RgbSpectrum();
}
else
{
result.Pdf /= dp;
result.F = surfaceData.Diffuse*MathLab.INVPI;
}
result.Wi = wi;
}示例11: f
public override void f(ref Vector WO, ref Vector WI, ref Normal N, ref RgbSpectrum in_fs, out RgbSpectrum fs)
{
CreateFrame(ref N);
var lwo = WorldToLocal(ref WO);
var lwi = WorldToLocal(ref WI);
EvalBrdf(out fs, ref lwo, ref lwi);
}示例12: GetBsdf
public BaseBxdf GetBsdf(ref RayData pathRay, ref RayHit hit, ref MediumInfo med, bool fromLight, float u0)
{
var currentTriangleIndex = (int) hit.Index;
bool isLight = scene.IsLight(currentTriangleIndex);
var mesh = scene.GetMeshByTriangleIndex(currentTriangleIndex);
if (mesh == null)
//|| mesh.MeshName.Equals("COL254_01", StringComparison.InvariantCultureIgnoreCase))
{
//ii.Color = new RgbSpectrum(1f);
//Debugger.Break();
throw new ApplicationException("Invalid triangle index " + currentTriangleIndex + " Mesh not found");
}
UV TexCoords;
Normal normal = new Normal(), shadeN = new Normal();
mesh.InterpolateTriUV(currentTriangleIndex, hit.U, hit.V, out TexCoords);
//normal = -scene.Triangles[currentTriangleIndex].ComputeNormal(scene.Vertices).Normalize();
mesh.InterpolateTriangleNormal((int)hit.Index, hit.U, hit.V, ref normal);
//normal = -normal;
shadeN = (Normal.Dot(ref pathRay.Dir, ref normal) > 0f) ? -normal : normal;
var bsdf = mesh.Material.GetBsdf(ref pathRay, ref hit, ref normal, ref shadeN, ref TexCoords, ref med, fromLight,u0);
bsdf.SetLight(isLight);
return bsdf;
}示例13: coefficient
float mReflectCoeff; //!< Fresnel reflection coefficient (for glass)
Bsdf(
Ray aRay,
ref Normal normal,
Material Material,
SceneGeometryInfo aScene)
{
Setup(aRay, ref normal, Material, aScene);
}示例14: G
public static float G(ref Normal N, ref Vector wo, ref Vector wi, ref Vector wh)
{
float NdotWh = Vector.AbsDot(ref N, ref wh);
float NdotWo = Vector.AbsDot(ref N, wo);
float NdotWi = Vector.AbsDot(ref N, wi);
float WOdotWh = Vector.AbsDot( ref wo, ref wh);
return Math.Min(1f, Math.Min(2f * NdotWh * NdotWo / WOdotWh, 2f * NdotWh * NdotWi / WOdotWh));
} 示例15: Sample_f
public override RgbSpectrum Sample_f(ref Vector wo, out Vector wi, ref Normal N, ref Normal shadeN, float u0, float u1, float u2, out float pdf, out bool specularBounce)
{
specularBounce = false;
distr.Sample_f(ref wo, out wi, u1, u2, out pdf);
if(!SameHemisphere(ref wo, ref wi))
return RgbSpectrum.ZeroSpectrum();
return f(ref wo, ref wi, ref N);
}