本文整理汇总了C++中CFrustum::testSAABB方法的典型用法代码示例。如果您正苦于以下问题：C++ CFrustum::testSAABB方法的具体用法？C++ CFrustum::testSAABB怎么用？C++ CFrustum::testSAABB使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CFrustum的用法示例。
在下文中一共展示了CFrustum::testSAABB方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: UpdateVisibleM
void CDetailManager::UpdateVisibleM()
{
Fvector EYE = Device.vCameraPosition;
CFrustum View = RImplementation.ViewBase;
float fade_limit = dm_fade; fade_limit=fade_limit*fade_limit;
float fade_start = 1.f; fade_start=fade_start*fade_start;
float fade_range = fade_limit-fade_start;
float r_ssaCHEAP = 16*r_ssaDISCARD;
// Initialize 'vis' and 'cache'
// Collect objects for rendering
Device.Statistic->RenderDUMP_DT_VIS.Begin ();
for (int _mz=0; _mz<dm_cache1_line; _mz++){
for (int _mx=0; _mx<dm_cache1_line; _mx++){
CacheSlot1& MS = cache_level1[_mz][_mx];
if (MS.empty) continue;
u32 mask = 0xff;
u32 res = View.testSAABB (MS.vis.sphere.P,MS.vis.sphere.R,MS.vis.box.data(),mask);
if (fcvNone==res) continue; // invisible-view frustum
// test slots
for (int _i=0; _i<dm_cache1_count*dm_cache1_count; _i++){
Slot* PS = *MS.slots[_i];
Slot& S = *PS;
// if slot empty - continue
if (S.empty) continue;
// if upper test = fcvPartial - test inner slots
if (fcvPartial==res){
u32 _mask = mask;
u32 _res = View.testSAABB (S.vis.sphere.P,S.vis.sphere.R,S.vis.box.data(),_mask);
if (fcvNone==_res) continue; // invisible-view frustum
}
#ifndef _EDITOR
if (!RImplementation.HOM.visible(S.vis)) continue; // invisible-occlusion
#endif
// Add to visibility structures
if (Device.dwFrame>S.frame){
// Calc fade factor (per slot)
float dist_sq = EYE.distance_to_sqr (S.vis.sphere.P);
if (dist_sq>fade_limit) continue;
float alpha = (dist_sq<fade_start)?0.f:(dist_sq-fade_start)/fade_range;
float alpha_i = 1.f - alpha;
float dist_sq_rcp = 1.f / dist_sq;
S.frame = Device.dwFrame+Random.randI(15,30);
for (int sp_id=0; sp_id<dm_obj_in_slot; sp_id++){
SlotPart& sp = S.G [sp_id];
if (sp.id==DetailSlot::ID_Empty) continue;
sp.r_items[0].clear_not_free();
sp.r_items[1].clear_not_free();
sp.r_items[2].clear_not_free();
float R = objects [sp.id]->bv_sphere.R;
float Rq_drcp = R*R*dist_sq_rcp; // reordered expression for 'ssa' calc
SlotItem **siIT=&(*sp.items.begin()), **siEND=&(*sp.items.end());
for (; siIT!=siEND; siIT++){
SlotItem& Item = *(*siIT);
float scale = Item.scale_calculated = Item.scale*alpha_i;
float ssa = scale*scale*Rq_drcp;
if (ssa < r_ssaDISCARD) continue;
u32 vis_id = 0;
if (ssa > r_ssaCHEAP) vis_id = Item.vis_ID;
sp.r_items[vis_id].push_back (*siIT);
//2 visible[vis_id][sp.id].push_back(&Item);
}
}
}
for (int sp_id=0; sp_id<dm_obj_in_slot; sp_id++){
SlotPart& sp = S.G [sp_id];
if (sp.id==DetailSlot::ID_Empty) continue;
if (!sp.r_items[0].empty()) visible[0][sp.id].push_back(&sp.r_items[0]);
if (!sp.r_items[1].empty()) visible[1][sp.id].push_back(&sp.r_items[1]);
if (!sp.r_items[2].empty()) visible[2][sp.id].push_back(&sp.r_items[2]);
}
}
}
}
Device.Statistic->RenderDUMP_DT_VIS.End ();
}