Vector SphericalCamera::screenToWorld(const Vector &ssP, const PTime time) const
{
SphericalCoords sc;
sc.longitude = ssP.x * M_PI;
sc.latitude = ssP.y * (M_PI * 0.5);
sc.radius = ssP.z;
Vector csP = sphereToCart(sc);
return cameraToWorld(csP, time);
}
real_t OrthoCamera::generateRayDifferential(const CameraSample &sample,
RayDifferential *rd) const {
// compute main orthographic viewing ray
// compute ray differentials for krthografic camera
if (lensRadius > 0) {
// caompute orthographic camera ray differentials accounting for lens
} else {
rd->rxOrigin = rd->o + dxCamera;
rd->ryOrigin = rd->o + dyCamera;
rd->rxDirection = rd->ryDirection = rd->d;
}
rd->time = ponos::lerp(sample.time, shutterOpen, shutterClose);
rd->hasDifferentials = true;
// TODO ENABLE ray->medium = medium;
cameraToWorld(*rd, rd);
return 1;
}
real_t OrthoCamera::generateRay(const CameraSample &sample, HRay *ray) const {
// generate raster and camera sample positions
ponos::Point3 pFilm(sample.pFilm.x, sample.pFilm.y, 0);
ponos::Point3 pCamera = rasterToCamera(pFilm);
*ray = HRay(pCamera, ponos::vec3(0, 0, 1));
// modify ray for depth of field
if (lensRadius > 0.) {
// TODO pg 315
// sample point on lens
// compute point on plane of focus
// update ray for effect of lens
}
ray->time = ponos::lerp(sample.time, shutterOpen, shutterClose);
// TODO ENABLE ray->medium = medium;
cameraToWorld(*ray, ray);
return 1;
}
