本文整理汇总了C++中HitInfo::getInterpolatedNormal方法的典型用法代码示例。如果您正苦于以下问题：C++ HitInfo::getInterpolatedNormal方法的具体用法？C++ HitInfo::getInterpolatedNormal怎么用？C++ HitInfo::getInterpolatedNormal使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类HitInfo的用法示例。
在下文中一共展示了HitInfo::getInterpolatedNormal方法的1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: sampleRay
const Vector3 RectangleLight::sampleLight(const unsigned int threadID, const Vector3 &from, const Vector3 &normal, const float time, const Scene &scene, const Vector3 &rVec, float &outSpec, bool isSecondary) const
{
Ray sampleRay(threadID);
HitInfo sampleHit;
Vector3 randDir = 0, tmpResult = 0;
float e1, e2, tmpSpec = 0;
bool cutOff = false;
int samplesDone = 0;
float samplesDoneRecip = 1.0f;
ALIGN_SSE float falloff = 1.0f;
do
{
// Get a random vector into the light
e1 = Scene::getRand(threadID);
e2 = Scene::getRand(threadID);
e2 = (e2 > 0.99) ? 0.99 : e2;
randDir = ((m_v1 + e1*(m_v2-m_v1) + e2*(m_v3-m_v1)) - from);
float nDotL = dot(normal, randDir);
Vector3 E = 0;
float attenuate = 1.0f;
if (nDotL > epsilon) // Only do work if light can be hit
{
// the inverse-squared falloff
falloff = randDir.length2();
ALIGN_SSE float distanceRecip, distance;
#ifndef NO_SSE
fastrsqrtss(setSSE(falloff), distanceRecip);
recipss(setSSE(falloff), falloff);
recipss(setSSE(distanceRecip), distance);
#else
distance = sqrtf(falloff);
distanceRecip = 1.0f / distance;
falloff = 1.0f / falloff;
#endif
randDir *= distanceRecip;
nDotL *= distanceRecip;
if (m_castShadows)
{
sampleHit.t = distance - epsilon; // We need this to account for the fact that we CAN hit geometry, to avoid false positives.
if (m_fastShadows)
{
sampleRay.set(threadID, from, randDir, time, 1.001f, 0, 0, IS_SHADOW_RAY); // Create shadow ray
if (scene.trace(threadID, sampleHit, sampleRay, epsilon)) // Quick method, returns any hit
{
attenuate = 0.0f;
}
}
else // Full method, accounts for transparency effects
{
float distanceTraversed = 0.0f;
sampleRay.set(threadID, from, randDir, time, 1.001f, 0, 0, IS_PRIMARY_RAY); // Create primary ray
while (distanceTraversed < distance && attenuate > epsilon)
{
if (scene.trace(threadID, sampleHit, sampleRay, epsilon))
{
Vector3 hitN; sampleHit.getInterpolatedNormal(hitN);
float nDL = dot(hitN, -randDir);
if (nDL > 0.0) // Only attenuate on incoming direction
{
attenuate *= sampleHit.obj->m_material->refractAmt();
}
Vector3 newP = Vector3(sampleRay.o[0], sampleRay.o[1], sampleRay.o[2]) + sampleHit.t * randDir;
sampleRay.set(threadID, newP, randDir, time, 1.001f, 0, 0, IS_PRIMARY_RAY);
distanceTraversed += sampleHit.t;
}
else
{
distanceTraversed = distance;
}
}
}
}
}
else
{
attenuate = 0.0f;
}
E = m_power * falloff * _1_4PI; // Light irradiance for this sample
samplesDone++;
samplesDoneRecip = 1.0f / (float)samplesDone;
cutOff = (E * samplesDoneRecip).average() < m_noiseThreshold; // Stop sampling if contribution is below the noise threshold
tmpResult += E * attenuate;
tmpSpec += max(0.f, dot(rVec, randDir)) * attenuate;
} while (samplesDone < m_numSamples && !cutOff);
outSpec = tmpSpec * samplesDoneRecip;
return tmpResult * samplesDoneRecip;
}