bool ETHRenderEntity::DrawHalo(const float maxHeight, const float minHeight, const bool rotateHalo, const Vector2 &zAxisDirection)
{
GS2D_UNUSED_ARGUMENT(minHeight);
GS2D_UNUSED_ARGUMENT(maxHeight);
if (!GetHalo() || !HasLightSource() || IsHidden())
return false;
m_pHalo->SetOrigin(Sprite::EO_CENTER);
const ETHLight* light = m_properties.light.get();
const Vector3 v3EntityPos = GetPosition();
// will remain as 1.0 for a while
m_provider->GetVideo()->SetSpriteDepth(1.0f/*ETHGlobal::ComputeDepth(m_data.entity.light.pos.z+v3EntityPos.z+ETH_HALO_DEPTH_SHIFT, maxHeight, minHeight)*/);
// if it has a particle system in the first slot, adjust the light
// brightness according to the number of active particles
float brightness = 1.0f;
const ETHParticleManagerPtr paticleManager = GetParticleManager(0);
if (paticleManager)
{
brightness = static_cast<float>(paticleManager->GetNumActiveParticles())/static_cast<float>(paticleManager->GetNumParticles());
}
Vector3 v3HaloPos = light->pos + v3EntityPos;
Color dwColor = ConvertToDW(light->color * light->haloBrightness * brightness);
Vector2 v2Size(light->haloSize, light->haloSize);
m_pHalo->DrawShaped(
ETHGlobal::ToScreenPos(v3HaloPos, zAxisDirection) + ComputeParallaxOffset(),
v2Size * m_properties.scale,
dwColor, dwColor, dwColor, dwColor,
(rotateHalo) ? ComputeHaloAngle() : 0.0f);
return true;
}
int EchScatRead (Hdr *phdr, double xsize, double ysize,
ScatterFunctions *scf, int verbose) {
/* arguments
Hdr *phdr i: primary header
double xsize, ysize; i: aperture size in arcsec
ScatterFunctions *scf; o: data structure with scattering functions
int verbose; i: verbosity flag
*/
char fname[STIS_LINE]; /* file names */
Image halo1; /* halo images */
Image halo2;
Image halo3;
Image psf1; /* psf images */
Image psf2;
Image psf3;
int no_default = 0; /* missing keyword is fatal error */
int status;
void InitImage (Image *);
void FreeImage (Image *);
InitImage (&halo1);
InitImage (&halo2);
InitImage (&halo3);
InitImage (&psf1);
InitImage (&psf2);
InitImage (&psf3);
/* Get scattering functions. */
if ((status = Get_KeyS (phdr, "ECHSCTAB", no_default, "",
fname, STIS_LINE))) {
printf (
"WARNING The input file *might* not have the required keywords\n");
printf (
" to run the scattered light correction algorithm.\n");
fflush (stdout);
return (status);
}
if (verbose) {
printf ("Reading ECHSCTAB: %s\n", fname);
fflush (stdout);
}
if ((status = GetScatter (fname, scf)))
return (status);
/* Get echelle x-disp spread function. */
if ((status = Get_KeyS (phdr, "EXSTAB", no_default, "",
fname, STIS_LINE)))
return (status);
if (verbose) {
printf ("Reading EXSTAB: %s\n", fname);
fflush (stdout);
}
if ((status = GetEchelleScatter (fname, scf)))
return (status);
/* Get x-disp function. */
if ((status = Get_KeyS (phdr, "CDSTAB", no_default, "",
fname, STIS_LINE)))
return (status);
if (verbose) {
printf ("Reading CDSTAB: %s\n", fname);
fflush (stdout);
}
if ((status = GetXDisp (fname, scf)))
return (status);
/* Get echelle ripple functions. */
if ((status = Get_KeyS (phdr, "RIPTAB", no_default, "",
fname, STIS_LINE)))
return (status);
if (verbose) {
printf ("Reading RIPTAB: %s\n", fname);
fflush (stdout);
}
if ((status = GetRipple (phdr, fname, scf)))
return (status);
/* Get wavelengths of halo and telescope PSF images. */
if ((status = Get_KeyS (phdr, "SRWTAB", no_default, "",
fname, STIS_LINE)))
return (status);
if (verbose) {
printf ("Reading SRWTAB: %s\n", fname);
fflush (stdout);
}
if ((status = GetRefWave (phdr, fname, scf)))
return (status);
/* Get halo and telescope psf images, and build FTs */
if ((status = Get_KeyS (phdr, "HALOTAB", no_default, "",
fname, STIS_LINE)))
return (status);
if (verbose) {
printf ("Reading HALOTAB: %s\n", fname);
fflush (stdout);
}
if ((status = GetHalo (fname, scf, &halo1, &halo2, &halo3)))
return (status);
if ((status = Get_KeyS (phdr, "TELTAB", no_default, "",
fname, STIS_LINE)))
return (status);
if (verbose) {
printf ("Reading TELTAB: %s\n", fname);
fflush (stdout);
}
if ((status = GetPSF (fname, phdr, xsize, ysize, scf,
&psf1, &psf2, &psf3)))
return (status);
InitCmplxArray (&(scf->ft1));
InitCmplxArray (&(scf->ft2));
InitCmplxArray (&(scf->ft3));
InitCmplxArray (&(scf->fto1));
InitCmplxArray (&(scf->fto2));
InitCmplxArray (&(scf->fto3));
if (verbose) {
printf (
"Computing Fourier Transforms of kernel at wavelength %g\n",
scf->kernw[0]);
fflush (stdout);
}
if ((status = MakeFT (&halo1, &psf1, scf, &(scf->ft1), &(scf->fto1))))
return (status);
if (scf->nwave > 1) {
if (verbose) {
printf (
"Computing Fourier Transforms of kernel at wavelength %g\n",
scf->kernw[1]);
fflush (stdout);
}
if ((status = MakeFT (&halo2, &psf2, scf, &(scf->ft2), &(scf->fto2))))
return (status);
}
if (scf->nwave > 2) {
if (verbose) {
printf (
"Computing Fourier Transforms of kernel at wavelength %g\n",
scf->kernw[2]);
fflush (stdout);
}
if ((status = MakeFT (&halo3, &psf3, scf, &(scf->ft3), &(scf->fto3))))
return (status);
}
FreeImage (&halo1);
FreeImage (&halo2);
FreeImage (&halo3);
FreeImage (&psf1);
FreeImage (&psf2);
FreeImage (&psf3);
return (STIS_OK);
}
