bool get_hud_matrices(const LLRect& screen_region, LLMatrix4a &proj, LLMatrix4a &model)
{
if (isAgentAvatarValid() && gAgentAvatarp->hasHUDAttachment())
{
F32 zoom_level = gAgentCamera.mHUDCurZoom;
LLBBox hud_bbox = gAgentAvatarp->getHUDBBox();
F32 hud_depth = llmax(1.f, hud_bbox.getExtentLocal().mV[VX] * 1.1f);
proj = gGL.genOrtho(-0.5f * LLViewerCamera::getInstance()->getAspect(), 0.5f * LLViewerCamera::getInstance()->getAspect(), -0.5f, 0.5f, 0.f, hud_depth);
proj.getRow<2>().copyComponent<2>(LLVector4a(-0.01f));
F32 aspect_ratio = LLViewerCamera::getInstance()->getAspect();
F32 scale_x = (F32)gViewerWindow->getWorldViewWidthScaled() / (F32)screen_region.getWidth();
F32 scale_y = (F32)gViewerWindow->getWorldViewHeightScaled() / (F32)screen_region.getHeight();
proj.applyTranslation_affine(
clamp_rescale((F32)(screen_region.getCenterX() - screen_region.mLeft), 0.f, (F32)gViewerWindow->getWorldViewWidthScaled(), 0.5f * scale_x * aspect_ratio, -0.5f * scale_x * aspect_ratio),
clamp_rescale((F32)(screen_region.getCenterY() - screen_region.mBottom), 0.f, (F32)gViewerWindow->getWorldViewHeightScaled(), 0.5f * scale_y, -0.5f * scale_y),
0.f);
proj.applyScale_affine(scale_x, scale_y, 1.f);
model = OGL_TO_CFR_ROTATION;
model.applyTranslation_affine(LLVector3(-hud_bbox.getCenterLocal().mV[VX] + (hud_depth * 0.5f), 0.f, 0.f));
model.applyScale_affine(zoom_level);
return TRUE;
}
else
{
return FALSE;
}
}
S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius)
{
static const LLVector4a scaler[] = {
LLVector4a(-1,-1,-1),
LLVector4a( 1,-1,-1),
LLVector4a(-1, 1,-1),
LLVector4a( 1, 1,-1),
LLVector4a(-1,-1, 1),
LLVector4a( 1,-1, 1),
LLVector4a(-1, 1, 1),
LLVector4a( 1, 1, 1)
};
U8 mask = 0;
bool result = false;
LLVector4a rscale, maxp, minp;
LLSimdScalar d;
for (U32 i = 0; i < mPlaneCount; i++)
{
mask = mPlaneMask[i];
if ((i != 5) && (mask != 0xff))
{
const LLPlane& p(mAgentPlanes[i]);
p.getAt<3>(d);
rscale.setMul(radius, scaler[mask]);
minp.setSub(center, rscale);
d = -d;
if (p.dot3(minp).getF32() > d)
{
return 0;
}
if(!result)
{
maxp.setAdd(center, rscale);
result = (p.dot3(maxp).getF32() > d);
}
}
}
return result?1:2;
}