/**
* Shade
*
* @param tree
* @param eyeRay
* @param color
* @param factor
* @param level
* @param originID
*/
private void Shade(OctNode tree, Ray eyeRay, Color color, double factor, int level, int originID)
{
Color lightColor = new Color(0.0f, 0.0f, 0.0f);
Color reflectColor = new Color(0.0f, 0.0f, 0.0f);
Color refractColor = new Color(0.0f, 0.0f, 0.0f);
IntersectPt intersect = new IntersectPt();
OctNode baseoctn = new OctNode();
Vector normal = new Vector();
Ray reflect = new Ray();
Ray refract = new Ray();
double mu;
int current;
if (intersect.FindNearestIsect(tree, eyeRay, originID, level, baseoctn))
{
intersect.GetIntersectObj().FindNormal(intersect.GetIntersection(), normal);
GetLightColor(baseoctn, intersect.GetIntersection(), normal, intersect.GetIntersectObj(), lightColor);
if (level < MaxLevel)
{
double check = factor * (1.0f - intersect.GetIntersectObj().GetMaterial().GetKTran()) * intersect.GetIntersectObj().GetMaterial().GetShininess();
if (check > MinFactor)
{
reflect.SetOrigin(intersect.GetIntersection());
reflect.GetDirection().Combine(eyeRay.GetDirection(), normal, 1.0f, -2.0f * normal.Dot(eyeRay.GetDirection()));
reflect.SetID(RayID);
this.RayID = this.RayID + 1;
Shade(baseoctn, reflect, reflectColor, check, level + 1, originID);
reflectColor.Scale((1.0f - intersect.GetIntersectObj().GetMaterial().GetKTran()) * intersect.GetIntersectObj().GetMaterial().GetShininess(),
intersect.GetIntersectObj().GetMaterial().GetSpecColor());
}
check = factor * intersect.GetIntersectObj().GetMaterial().GetKTran();
if (check > MinFactor)
{
if (intersect.GetEnter())
{
mu = 1.0f / intersect.GetIntersectObj().GetMaterial().GetRefIndex();
current = intersect.GetIntersectObj().GetObjID();
}
else
{
mu = intersect.GetIntersectObj().GetMaterial().GetRefIndex();
normal.Negate();
current = 0;
}
double IdotN = normal.Dot(eyeRay.GetDirection());
double TotIntReflect = 1.0f - mu * mu * (1.0f - IdotN * IdotN);
if (TotIntReflect >= 0.0)
{
double gamma = -mu * IdotN - (double)Math.Sqrt(TotIntReflect);
refract.SetOrigin(intersect.GetIntersection());
refract.GetDirection().Combine(eyeRay.GetDirection(), normal, mu, gamma);
refract.SetID(RayID);
this.RayID = RayID + 1;
Shade(baseoctn, refract, refractColor, check, level + 1, current);
refractColor.Scale(intersect.GetIntersectObj().GetMaterial().GetKTran(), intersect.GetIntersectObj().GetMaterial().GetSpecColor());
}
}
}
color.Combine(intersect.GetIntersectObj().GetMaterial().GetEmissColor(), intersect.GetIntersectObj().GetMaterial().GetAmbColor(),
AmbLightIntensity, lightColor, reflectColor, refractColor);
}
}
/**
* Shade
*
* @param tree
* @param eyeRay
* @param color
* @param factor
* @param level
* @param originID
*/
private void Shade(OctNode tree, Ray eyeRay, Color color, double factor, int level, int originID)
{
Color lightColor = new Color(0.0f, 0.0f, 0.0f);
Color reflectColor = new Color(0.0f, 0.0f, 0.0f);
Color refractColor = new Color(0.0f, 0.0f, 0.0f);
IntersectPt intersect = new IntersectPt();
OctNode baseoctn = new OctNode();
Vector normal = new Vector();
Ray reflect = new Ray();
Ray refract = new Ray();
double mu;
int current;
if(intersect.FindNearestIsect(tree, eyeRay, originID, level, baseoctn))
{
intersect.GetIntersectObj().FindNormal(intersect.GetIntersection(), normal);
GetLightColor(baseoctn, intersect.GetIntersection(), normal, intersect.GetIntersectObj(), lightColor);
if(level < MaxLevel)
{
double check = factor * (1.0f - intersect.GetIntersectObj().GetMaterial().GetKTran()) * intersect.GetIntersectObj().GetMaterial().GetShininess();
if(check > MinFactor)
{
reflect.SetOrigin(intersect.GetIntersection());
reflect.GetDirection().Combine(eyeRay.GetDirection(), normal, 1.0f, -2.0f * normal.Dot(eyeRay.GetDirection()));
reflect.SetID(RayID);
this.RayID = this.RayID + 1;
Shade(baseoctn, reflect, reflectColor, check, level + 1, originID);
reflectColor.Scale((1.0f - intersect.GetIntersectObj().GetMaterial().GetKTran()) * intersect.GetIntersectObj().GetMaterial().GetShininess(),
intersect.GetIntersectObj().GetMaterial().GetSpecColor());
}
check = factor * intersect.GetIntersectObj().GetMaterial().GetKTran();
if(check > MinFactor)
{
if(intersect.GetEnter())
{
mu = 1.0f / intersect.GetIntersectObj().GetMaterial().GetRefIndex();
current = intersect.GetIntersectObj().GetObjID();
}
else
{
mu = intersect.GetIntersectObj().GetMaterial().GetRefIndex();
normal.Negate();
current = 0;
}
double IdotN = normal.Dot(eyeRay.GetDirection());
double TotIntReflect = 1.0f - mu * mu * (1.0f - IdotN * IdotN);
if(TotIntReflect >= 0.0)
{
double gamma = -mu * IdotN - (double)Math.Sqrt(TotIntReflect);
refract.SetOrigin(intersect.GetIntersection());
refract.GetDirection().Combine(eyeRay.GetDirection(), normal, mu, gamma);
refract.SetID(RayID);
this.RayID = RayID + 1;
Shade(baseoctn, refract, refractColor, check, level + 1, current);
refractColor.Scale(intersect.GetIntersectObj().GetMaterial().GetKTran(), intersect.GetIntersectObj().GetMaterial().GetSpecColor());
}
}
}
color.Combine(intersect.GetIntersectObj().GetMaterial().GetEmissColor(), intersect.GetIntersectObj().GetMaterial().GetAmbColor(),
AmbLightIntensity, lightColor, reflectColor, refractColor);
}
}