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added missing PerspectiveCamera::getDiagonalFov() function

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Wenzel Jakob 2013-12-29 14:31:46 +01:00
parent b5148cdfa3
commit ea3d61da15
1 changed files with 6 additions and 0 deletions
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6
src/librender/sensor.cpp
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@ -312,6 +312,12 @@ Float PerspectiveCamera::getYFov() const {
std::tan(0.5f * degToRad(m_xfov)) / m_aspect));
}
Float PerspectiveCamera::getDiagonalFov() const {
Float width = std::tan(0.5f * degToRad(m_xfov));
Float diagonal = width * std::sqrt(1.0f + 1.0f / (m_aspect*m_aspect));
return radToDeg(2*std::atan(diagonal));
}
MTS_IMPLEMENT_CLASS(PerspectiveCamera, true, ProjectiveCamera)
MTS_IMPLEMENT_CLASS(ProjectiveCamera, true, Sensor)
MTS_IMPLEMENT_CLASS(Sensor, true, AbstractEmitter)