bool Sphere::IntersectP(const Ray &r, bool testAlphaTexture) const {
Float phi;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic sphere coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat a = dx * dx + dy * dy + dz * dz;
EFloat b = 2 * (dx * ox + dy * oy + dz * oz);
EFloat c = ox * ox + oy * oy + oz * oz - EFloat(radius) * EFloat(radius);
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (tShapeHit.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute sphere hit position and $\phi$
pHit = ray((Float)tShapeHit);
// Refine sphere intersection point
pHit *= radius / Distance(pHit, Point3f(0, 0, 0));
if (pHit.x == 0 && pHit.y == 0) pHit.x = 1e-5f * radius;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
// Test sphere intersection against clipping parameters
if ((zMin > -radius && pHit.z < zMin) || (zMax < radius && pHit.z > zMax) ||
phi > phiMax) {
if (tShapeHit == t1) return false;
if (t1.UpperBound() > ray.tMax) return false;
tShapeHit = t1;
// Compute sphere hit position and $\phi$
pHit = ray((Float)tShapeHit);
// Refine sphere intersection point
pHit *= radius / Distance(pHit, Point3f(0, 0, 0));
if (pHit.x == 0 && pHit.y == 0) pHit.x = 1e-5f * radius;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
if ((zMin > -radius && pHit.z < zMin) ||
(zMax < radius && pHit.z > zMax) || phi > phiMax)
return false;
}
return true;
}
bool Cylinder::IntersectP(const Ray &r, bool testAlphaTexture) const {
Float phi;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic cylinder coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat a = dx * dx + dy * dy;
EFloat b = 2 * (dx * ox + dy * oy);
EFloat c = ox * ox + oy * oy - EFloat(radius) * EFloat(radius);
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (tShapeHit.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute cylinder hit point and $\phi$
pHit = ray((Float)tShapeHit);
// Refine cylinder intersection point
Float hitRad = std::sqrt(pHit.x * pHit.x + pHit.y * pHit.y);
pHit.x *= radius / hitRad;
pHit.y *= radius / hitRad;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
// Test cylinder intersection against clipping parameters
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) {
if (tShapeHit == t1) return false;
tShapeHit = t1;
if (t1.UpperBound() > ray.tMax) return false;
// Compute cylinder hit point and $\phi$
pHit = ray((Float)tShapeHit);
// Refine cylinder intersection point
Float hitRad = std::sqrt(pHit.x * pHit.x + pHit.y * pHit.y);
pHit.x *= radius / hitRad;
pHit.y *= radius / hitRad;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) return false;
}
return true;
}
bool Hyperboloid::IntersectP(const Ray &r) const {
Float phi, v;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic hyperboloid coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat a = ah * dx * dx + ah * dy * dy - ch * dz * dz;
EFloat b = 2.f * (ah * dx * ox + ah * dy * oy - ch * dz * oz);
EFloat c = ah * ox * ox + ah * oy * oy - ch * oz * oz - 1.f;
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (t0.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute hyperboloid inverse mapping
pHit = ray((Float)tShapeHit);
v = (pHit.z - p1.z) / (p2.z - p1.z);
Point3f pr = (1 - v) * p1 + v * p2;
phi = std::atan2(pr.x * pHit.y - pHit.x * pr.y,
pHit.x * pr.x + pHit.y * pr.y);
if (phi < 0) phi += 2 * Pi;
// Test hyperboloid intersection against clipping parameters
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) {
if (tShapeHit == t1) return false;
tShapeHit = t1;
if (t1.UpperBound() > ray.tMax) return false;
// Compute hyperboloid inverse mapping
pHit = ray((Float)tShapeHit);
v = (pHit.z - p1.z) / (p2.z - p1.z);
Point3f pr = (1 - v) * p1 + v * p2;
phi = std::atan2(pr.x * pHit.y - pHit.x * pr.y,
pHit.x * pr.x + pHit.y * pr.y);
if (phi < 0) phi += 2 * Pi;
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) return false;
}
return true;
}
void *TextureBrick::tex_data(int c)
{
if (c >= 0 && data_[c])
{
unsigned char *ptr = (unsigned char *)(data_[c]->data);
long long offset = (long long)(oz()) *
(long long)(sx()) *
(long long)(sy()) +
(long long)(oy()) *
(long long)(sx()) +
(long long)(ox());
return ptr + offset * tex_type_size(tex_type(c));
}
else
return NULL;
}
bool Paraboloid::IntersectP(const Ray &r) const {
Float phi;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic paraboloid coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat k = EFloat(zMax) / (EFloat(radius) * EFloat(radius));
EFloat a = k * (dx * dx + dy * dy);
EFloat b = 2.f * k * (dx * ox + dy * oy) - dz;
EFloat c = k * (ox * ox + oy * oy) - oz;
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (tShapeHit.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute paraboloid inverse mapping
pHit = ray((Float)tShapeHit);
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0.) phi += 2 * Pi;
// Test paraboloid intersection against clipping parameters
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) {
if (tShapeHit == t1) return false;
tShapeHit = t1;
if (t1.UpperBound() > ray.tMax) return false;
// Compute paraboloid inverse mapping
pHit = ray((Float)tShapeHit);
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0.) phi += 2 * Pi;
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) return false;
}
return true;
}
void ns_capture_scan_statistics::output_jmp_format(std::ostream & o, const ns_vector_2d & position, const ns_vector_2d & size,const std::string & delimeter) const{
o << date_of_first_sample_scan << ","
<< oz(scheduled_time_date) << ","
<< oz(start_time_date) << ","
<< oz(scheduled_time/(60*60*24.0),scheduled_time_date) << ","
<< oz(start_time/(60.0*60*24),start_time_date) << ","
<< (missed?"Skpped":"Not Skipped") << ","
<< (problem?"Error":"No Error") << ","
<< ((missed || problem)?("Skipped or Error"):"OK") << ",";
if (stop_time_date == 0){
for (unsigned int i = 0; i < 24; i++)
o << ",";
o << delimeter;
}
else {
o << starting_delay()/60.0 << ","
<< oz(time_spent_off_immediately_before_starting_scan/60.0,time_spent_off_immediately_before_starting_scan+1) << "," //-1 if not specified
<< warm_up_duration() << ","
<< scanning_duration()/(60.0) << ","
<< oz(time_spent_off_after_finishing_scan/60.0,time_spent_off_after_finishing_scan+1) << "," //-1 if not specified
<< smoothed_scanning_duration/60.0 << ","
<< sqrt(scanning_duration_variation)/60.0 << ","
<< scan_rate_inches_per_second()*60.0<< ","
<< smoothed_scan_rate_inches_per_second()*60.0 << ","
<< "TEST,"
<< time_spent_reading_from_device << ","
<< time_spent_writing_to_disk << ","
<< total_time_spent_during_programmed_delay << ","
<< total_time_during_read << ","
<< "TEST2,"
<< time_during_transfer_to_long_term_storage<< ","
<< time_during_deletion_from_local_storage << ","
<< transfer_efficiency() <<","
<< position.x << "," << position.y << ","
<< size.x << "," << size.y << ","
<< image_stats.image_statistics.mean<< ","
<< image_stats.image_statistics.variance<< ","
<< image_stats.image_statistics.entropy<< ","
<< image_stats.image_statistics.bottom_percentile_average<< ","
<< image_stats.image_statistics.top_percentile_average << ","
<< registration_offset.x << ","
<< registration_offset.y
<< delimeter;
}
}
bool Cylinder::Intersect(const Ray &r, Float *tHit, SurfaceInteraction *isect,
bool testAlphaTexture) const {
Float phi;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic cylinder coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat a = dx * dx + dy * dy;
EFloat b = 2 * (dx * ox + dy * oy);
EFloat c = ox * ox + oy * oy - EFloat(radius) * EFloat(radius);
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (tShapeHit.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute cylinder hit point and $\phi$
pHit = ray((Float)tShapeHit);
// Refine cylinder intersection point
Float hitRad = std::sqrt(pHit.x * pHit.x + pHit.y * pHit.y);
pHit.x *= radius / hitRad;
pHit.y *= radius / hitRad;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
// Test cylinder intersection against clipping parameters
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) {
if (tShapeHit == t1) return false;
tShapeHit = t1;
if (t1.UpperBound() > ray.tMax) return false;
// Compute cylinder hit point and $\phi$
pHit = ray((Float)tShapeHit);
// Refine cylinder intersection point
Float hitRad = std::sqrt(pHit.x * pHit.x + pHit.y * pHit.y);
pHit.x *= radius / hitRad;
pHit.y *= radius / hitRad;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) return false;
}
// Find parametric representation of cylinder hit
Float u = phi / phiMax;
Float v = (pHit.z - zMin) / (zMax - zMin);
// Compute cylinder $\dpdu$ and $\dpdv$
Vector3f dpdu(-phiMax * pHit.y, phiMax * pHit.x, 0);
Vector3f dpdv(0, 0, zMax - zMin);
// Compute cylinder $\dndu$ and $\dndv$
Vector3f d2Pduu = -phiMax * phiMax * Vector3f(pHit.x, pHit.y, 0);
Vector3f d2Pduv(0, 0, 0), d2Pdvv(0, 0, 0);
// Compute coefficients for fundamental forms
Float E = Dot(dpdu, dpdu);
Float F = Dot(dpdu, dpdv);
Float G = Dot(dpdv, dpdv);
Vector3f N = Normalize(Cross(dpdu, dpdv));
Float e = Dot(N, d2Pduu);
Float f = Dot(N, d2Pduv);
Float g = Dot(N, d2Pdvv);
// Compute $\dndu$ and $\dndv$ from fundamental form coefficients
Float invEGF2 = 1 / (E * G - F * F);
Normal3f dndu = Normal3f((f * F - e * G) * invEGF2 * dpdu +
(e * F - f * E) * invEGF2 * dpdv);
Normal3f dndv = Normal3f((g * F - f * G) * invEGF2 * dpdu +
(f * F - g * E) * invEGF2 * dpdv);
// Compute error bounds for cylinder intersection
Vector3f pError = gamma(3) * Abs(Vector3f(pHit.x, pHit.y, 0));
// Initialize _SurfaceInteraction_ from parametric information
*isect = (*ObjectToWorld)(SurfaceInteraction(pHit, pError, Point2f(u, v),
-ray.d, dpdu, dpdv, dndu, dndv,
ray.time, this));
// Update _tHit_ for quadric intersection
*tHit = (Float)tShapeHit;
return true;
}
bool Hyperboloid::Intersect(const Ray &r, Float *tHit,
SurfaceInteraction *isect) const {
Float phi, v;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic hyperboloid coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat a = ah * dx * dx + ah * dy * dy - ch * dz * dz;
EFloat b = 2.f * (ah * dx * ox + ah * dy * oy - ch * dz * oz);
EFloat c = ah * ox * ox + ah * oy * oy - ch * oz * oz - 1.f;
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (t0.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute hyperboloid inverse mapping
pHit = ray((Float)tShapeHit);
v = (pHit.z - p1.z) / (p2.z - p1.z);
Point3f pr = (1 - v) * p1 + v * p2;
phi = std::atan2(pr.x * pHit.y - pHit.x * pr.y,
pHit.x * pr.x + pHit.y * pr.y);
if (phi < 0) phi += 2 * Pi;
// Test hyperboloid intersection against clipping parameters
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) {
if (tShapeHit == t1) return false;
tShapeHit = t1;
if (t1.UpperBound() > ray.tMax) return false;
// Compute hyperboloid inverse mapping
pHit = ray((Float)tShapeHit);
v = (pHit.z - p1.z) / (p2.z - p1.z);
Point3f pr = (1 - v) * p1 + v * p2;
phi = std::atan2(pr.x * pHit.y - pHit.x * pr.y,
pHit.x * pr.x + pHit.y * pr.y);
if (phi < 0) phi += 2 * Pi;
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) return false;
}
// Compute parametric representation of hyperboloid hit
Float u = phi / phiMax;
// Compute hyperboloid $\dpdu$ and $\dpdv$
Float cosPhi = std::cos(phi), sinPhi = std::sin(phi);
Vector3f dpdu(-phiMax * pHit.y, phiMax * pHit.x, 0.);
Vector3f dpdv((p2.x - p1.x) * cosPhi - (p2.y - p1.y) * sinPhi,
(p2.x - p1.x) * sinPhi + (p2.y - p1.y) * cosPhi, p2.z - p1.z);
// Compute hyperboloid $\dndu$ and $\dndv$
Vector3f d2Pduu = -phiMax * phiMax * Vector3f(pHit.x, pHit.y, 0);
Vector3f d2Pduv = phiMax * Vector3f(-dpdv.y, dpdv.x, 0.);
Vector3f d2Pdvv(0, 0, 0);
// Compute coefficients for fundamental forms
Float E = Dot(dpdu, dpdu);
Float F = Dot(dpdu, dpdv);
Float G = Dot(dpdv, dpdv);
Vector3f N = Normalize(Cross(dpdu, dpdv));
Float e = Dot(N, d2Pduu);
Float f = Dot(N, d2Pduv);
Float g = Dot(N, d2Pdvv);
// Compute $\dndu$ and $\dndv$ from fundamental form coefficients
Float invEGF2 = 1 / (E * G - F * F);
Normal3f dndu = Normal3f((f * F - e * G) * invEGF2 * dpdu +
(e * F - f * E) * invEGF2 * dpdv);
Normal3f dndv = Normal3f((g * F - f * G) * invEGF2 * dpdu +
(f * F - g * E) * invEGF2 * dpdv);
// Compute error bounds for hyperboloid intersection
// Compute error bounds for intersection computed with ray equation
EFloat px = ox + tShapeHit * dx;
EFloat py = oy + tShapeHit * dy;
EFloat pz = oz + tShapeHit * dz;
Vector3f pError = Vector3f(px.GetAbsoluteError(), py.GetAbsoluteError(),
pz.GetAbsoluteError());
// Initialize _SurfaceInteraction_ from parametric information
*isect = (*ObjectToWorld)(SurfaceInteraction(pHit, pError, Point2f(u, v),
-ray.d, dpdu, dpdv, dndu, dndv,
ray.time, this));
*tHit = (Float)tShapeHit;
return true;
}
//-----------------------------------------------------------------------------
// main application
//-----------------------------------------------------------------------------
int CSceneViewerApp::Main()
{
g_pMaterialSystem->ModInit();
if (!SetVideoMode())
return 0;
g_pDataCache->SetSize( 64 * 1024 * 1024 );
InitDefaultEnvCubemap();
g_pMaterialSystemConfig = &g_pMaterialSystem->GetCurrentConfigForVideoCard();
// configuration settings
vgui::system()->SetUserConfigFile("sceneviewer.vdf", "EXECUTABLE_PATH");
// load scheme
if (!vgui::scheme()->LoadSchemeFromFile("resource/BoxRocket.res", "SceneViewer" ))
{
Assert( 0 );
}
g_pVGuiLocalize->AddFile( "resource/boxrocket_%language%.txt" );
// start vgui
g_pVGui->Start();
//vgui::input()->SetAppModalSurface( mainPanel->GetVPanel() );
// load the base localization file
g_pVGuiLocalize->AddFile( "Resource/valve_%language%.txt" );
g_pFullFileSystem->AddSearchPath("platform", "PLATFORM");
g_pVGuiLocalize->AddFile( "Resource/vgui_%language%.txt");
g_pVGuiLocalize->AddFile( "Resource/dmecontrols_%language%.txt");
// add our main window
vgui::Panel *mainPanel = CreateSceneViewerPanel();
// run app frame loop
CMatRenderContextPtr pRenderContext( g_pMaterialSystem );
vgui::VPANEL root = vgui::surface()->GetEmbeddedPanel();
vgui::surface()->Invalidate( root );
// See if there was a DMX file passed on the command line
for ( int i( CommandLine()->ParmCount() - 1 ); i > 0; --i )
{
const char *const arg( CommandLine()->GetParm( i ) );
if ( arg && *arg != '\0' && _access( arg, 04 ) == 0 )
{
if ( !CommandLine()->FindParm( "-nozoom" ) )
{
KeyValues *oz( new KeyValues( "PinAndZoomIt" ) );
mainPanel->PostMessage( mainPanel, oz );
}
KeyValues *ofs( new KeyValues( "LoadFile" ) );
ofs->SetString( "fullpath", arg );
mainPanel->PostMessage( mainPanel, ofs );
if ( CommandLine()->FindParm( "-showasset" ) )
{
KeyValues *msg( new KeyValues( "ShowAssetBuilder" ) );
mainPanel->PostMessage( mainPanel, msg );
}
if ( CommandLine()->FindParm( "-showcomboeditor" ) )
{
KeyValues *msg( new KeyValues( "ShowComboBuilder" ) );
mainPanel->PostMessage( mainPanel, msg );
}
break;
}
}
int nLastTime = Plat_MSTime();
while (g_pVGui->IsRunning())
{
// Give other applications a chance to run
Sleep( 1 );
int nTime = Plat_MSTime();
if ( ( nTime - nLastTime ) < 16 )
continue;
nLastTime = nTime;
AppPumpMessages();
vgui::GetAnimationController()->UpdateAnimations( Sys_FloatTime() );
g_pMaterialSystem->BeginFrame( 0 );
pRenderContext->ClearColor4ub( 76, 88, 68, 255 );
pRenderContext->ClearBuffers( true, true );
g_pVGui->RunFrame();
g_pVGuiSurface->PaintTraverseEx( root, true );
g_pMaterialSystem->EndFrame();
g_pMaterialSystem->SwapBuffers();
}
delete mainPanel;
ShutdownDefaultEnvCubemap();
g_pMaterialSystem->ModShutdown();
// HACK - this is a bit of a hack, since in theory, there could be multiple of these panels,
// or there could be elements allocated outside of these panels, but since the filenames are hardcoded,
// I don't feel too bad about unloading *all* files to make sure they're caught
int nFiles = g_pDataModel->NumFileIds();
for ( int i = 0; i < nFiles; ++i )
{
DmFileId_t fileid = g_pDataModel->GetFileId( i );
g_pDataModel->UnloadFile( fileid );
}
return 1;
}
bool Paraboloid::Intersect(const Ray &r, Float *tHit,
SurfaceInteraction *isect) const {
Float phi;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic paraboloid coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat k = EFloat(zMax) / (EFloat(radius) * EFloat(radius));
EFloat a = k * (dx * dx + dy * dy);
EFloat b = 2.f * k * (dx * ox + dy * oy) - dz;
EFloat c = k * (ox * ox + oy * oy) - oz;
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (tShapeHit.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute paraboloid inverse mapping
pHit = ray((Float)tShapeHit);
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0.) phi += 2 * Pi;
// Test paraboloid intersection against clipping parameters
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) {
if (tShapeHit == t1) return false;
tShapeHit = t1;
if (t1.UpperBound() > ray.tMax) return false;
// Compute paraboloid inverse mapping
pHit = ray((Float)tShapeHit);
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0.) phi += 2 * Pi;
if (pHit.z < zMin || pHit.z > zMax || phi > phiMax) return false;
}
// Find parametric representation of paraboloid hit
Float u = phi / phiMax;
Float v = (pHit.z - zMin) / (zMax - zMin);
// Compute paraboloid $\dpdu$ and $\dpdv$
Vector3f dpdu(-phiMax * pHit.y, phiMax * pHit.x, 0.);
Vector3f dpdv = (zMax - zMin) *
Vector3f(pHit.x / (2 * pHit.z), pHit.y / (2 * pHit.z), 1.);
// Compute paraboloid $\dndu$ and $\dndv$
Vector3f d2Pduu = -phiMax * phiMax * Vector3f(pHit.x, pHit.y, 0);
Vector3f d2Pduv =
(zMax - zMin) * phiMax *
Vector3f(-pHit.y / (2 * pHit.z), pHit.x / (2 * pHit.z), 0);
Vector3f d2Pdvv = -(zMax - zMin) * (zMax - zMin) *
Vector3f(pHit.x / (4 * pHit.z * pHit.z),
pHit.y / (4 * pHit.z * pHit.z), 0.);
// Compute coefficients for fundamental forms
Float E = Dot(dpdu, dpdu);
Float F = Dot(dpdu, dpdv);
Float G = Dot(dpdv, dpdv);
Vector3f N = Normalize(Cross(dpdu, dpdv));
Float e = Dot(N, d2Pduu);
Float f = Dot(N, d2Pduv);
Float g = Dot(N, d2Pdvv);
// Compute $\dndu$ and $\dndv$ from fundamental form coefficients
Float invEGF2 = 1 / (E * G - F * F);
Normal3f dndu = Normal3f((f * F - e * G) * invEGF2 * dpdu +
(e * F - f * E) * invEGF2 * dpdv);
Normal3f dndv = Normal3f((g * F - f * G) * invEGF2 * dpdu +
(f * F - g * E) * invEGF2 * dpdv);
// Compute error bounds for paraboloid intersection
// Compute error bounds for intersection computed with ray equation
EFloat px = ox + tShapeHit * dx;
EFloat py = oy + tShapeHit * dy;
EFloat pz = oz + tShapeHit * dz;
Vector3f pError = Vector3f(px.GetAbsoluteError(), py.GetAbsoluteError(),
pz.GetAbsoluteError());
// Initialize _SurfaceInteraction_ from parametric information
*isect = (*ObjectToWorld)(SurfaceInteraction(pHit, pError, Point2f(u, v),
-ray.d, dpdu, dpdv, dndu, dndv,
ray.time, this));
*tHit = (Float)tShapeHit;
return true;
}
bool Sphere::Intersect(const Ray &r, Float *tHit, SurfaceInteraction *isect,
bool testAlphaTexture) const {
Float phi;
Point3f pHit;
// Transform _Ray_ to object space
Vector3f oErr, dErr;
Ray ray = (*WorldToObject)(r, &oErr, &dErr);
// Compute quadratic sphere coefficients
// Initialize _EFloat_ ray coordinate values
EFloat ox(ray.o.x, oErr.x), oy(ray.o.y, oErr.y), oz(ray.o.z, oErr.z);
EFloat dx(ray.d.x, dErr.x), dy(ray.d.y, dErr.y), dz(ray.d.z, dErr.z);
EFloat a = dx * dx + dy * dy + dz * dz;
EFloat b = 2 * (dx * ox + dy * oy + dz * oz);
EFloat c = ox * ox + oy * oy + oz * oz - EFloat(radius) * EFloat(radius);
// Solve quadratic equation for _t_ values
EFloat t0, t1;
if (!Quadratic(a, b, c, &t0, &t1)) return false;
// Check quadric shape _t0_ and _t1_ for nearest intersection
if (t0.UpperBound() > ray.tMax || t1.LowerBound() <= 0) return false;
EFloat tShapeHit = t0;
if (tShapeHit.LowerBound() <= 0) {
tShapeHit = t1;
if (tShapeHit.UpperBound() > ray.tMax) return false;
}
// Compute sphere hit position and $\phi$
pHit = ray((Float)tShapeHit);
// Refine sphere intersection point
pHit *= radius / Distance(pHit, Point3f(0, 0, 0));
if (pHit.x == 0 && pHit.y == 0) pHit.x = 1e-5f * radius;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
// Test sphere intersection against clipping parameters
if ((zMin > -radius && pHit.z < zMin) || (zMax < radius && pHit.z > zMax) ||
phi > phiMax) {
if (tShapeHit == t1) return false;
if (t1.UpperBound() > ray.tMax) return false;
tShapeHit = t1;
// Compute sphere hit position and $\phi$
pHit = ray((Float)tShapeHit);
// Refine sphere intersection point
pHit *= radius / Distance(pHit, Point3f(0, 0, 0));
if (pHit.x == 0 && pHit.y == 0) pHit.x = 1e-5f * radius;
phi = std::atan2(pHit.y, pHit.x);
if (phi < 0) phi += 2 * Pi;
if ((zMin > -radius && pHit.z < zMin) ||
(zMax < radius && pHit.z > zMax) || phi > phiMax)
return false;
}
// Find parametric representation of sphere hit
Float u = phi / phiMax;
Float theta = std::acos(Clamp(pHit.z / radius, -1, 1));
Float v = (theta - thetaMin) / (thetaMax - thetaMin);
// Compute sphere $\dpdu$ and $\dpdv$
Float zRadius = std::sqrt(pHit.x * pHit.x + pHit.y * pHit.y);
Float invZRadius = 1 / zRadius;
Float cosPhi = pHit.x * invZRadius;
Float sinPhi = pHit.y * invZRadius;
Vector3f dpdu(-phiMax * pHit.y, phiMax * pHit.x, 0);
Vector3f dpdv =
(thetaMax - thetaMin) *
Vector3f(pHit.z * cosPhi, pHit.z * sinPhi, -radius * std::sin(theta));
// Compute sphere $\dndu$ and $\dndv$
Vector3f d2Pduu = -phiMax * phiMax * Vector3f(pHit.x, pHit.y, 0);
Vector3f d2Pduv =
(thetaMax - thetaMin) * pHit.z * phiMax * Vector3f(-sinPhi, cosPhi, 0.);
Vector3f d2Pdvv = -(thetaMax - thetaMin) * (thetaMax - thetaMin) *
Vector3f(pHit.x, pHit.y, pHit.z);
// Compute coefficients for fundamental forms
Float E = Dot(dpdu, dpdu);
Float F = Dot(dpdu, dpdv);
Float G = Dot(dpdv, dpdv);
Vector3f N = Normalize(Cross(dpdu, dpdv));
Float e = Dot(N, d2Pduu);
Float f = Dot(N, d2Pduv);
Float g = Dot(N, d2Pdvv);
// Compute $\dndu$ and $\dndv$ from fundamental form coefficients
Float invEGF2 = 1 / (E * G - F * F);
Normal3f dndu = Normal3f((f * F - e * G) * invEGF2 * dpdu +
(e * F - f * E) * invEGF2 * dpdv);
Normal3f dndv = Normal3f((g * F - f * G) * invEGF2 * dpdu +
(f * F - g * E) * invEGF2 * dpdv);
// Compute error bounds for sphere intersection
Vector3f pError = gamma(5) * Abs((Vector3f)pHit);
// Initialize _SurfaceInteraction_ from parametric information
*isect = (*ObjectToWorld)(SurfaceInteraction(pHit, pError, Point2f(u, v),
-ray.d, dpdu, dpdv, dndu, dndv,
ray.time, this));
// Update _tHit_ for quadric intersection
*tHit = (Float)tShapeHit;
return true;
}
