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0024307: TKOpenGl - efficient culling of large number of presentations

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Implement SAT intersection tests and frustum culling algorithm using BVH trees.

New Draw command vfrustumculling to manage frustum culling.
Add test cases bugs/vis/bug24307_1 and bugs/vis/bug24307_2.
Remove CALL_DEF_BOUNDBOX and CALL_DEF_BOUNDS.
This commit is contained in:
vpa
2014-06-20 11:26:14 +04:00
committed by apn
parent c1c1aefa71
commit b7cd4ba795
53 changed files with 1885 additions and 538 deletions
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14
src/Standard/Standard_Real.hxx
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@@ -270,6 +270,20 @@ inline Standard_Integer RealToInt (const Standard_Real Value)
: (Standard_Integer)Value;
}
// =======================================================================
// function : RealToShortReal
// purpose : Converts Standard_Real value to the nearest valid
// Standard_ShortReal. If input value is out of valid range
// for Standard_ShortReal, minimal or maximal
// Standard_ShortReal is returned.
// =======================================================================
inline Standard_ShortReal RealToShortReal (const Standard_Real theVal)
{
return theVal < -FLT_MAX ? -FLT_MAX
: theVal > FLT_MAX ? FLT_MAX
: (Standard_ShortReal)theVal;
}
//-------------------------------------------------------------------
// Round : Returns the nearest integer of a real
//-------------------------------------------------------------------