PDSphere Class Reference

#include <pDomain.h>

Inheritance diagram for PDSphere:

Collaboration diagram for PDSphere:

List of all members.

Public Member Functions

PDSphere (const pVec &ctr0, const float radOut0, const float radIn0=0.0f)

~PDSphere ()

bool Within (const pVec &pos) const

pVec Generate () const

pDomain * copy () const

Public Attributes

pVec ctr

float radOut

float radIn

float radOutSqr

float radInSqr

float radDif

bool ThinShell

Detailed Description

Definition at line 468 of file pDomain.h.

Constructor & Destructor Documentation

PDSphere::PDSphere	(	const pVec &	ctr0,
		const float	radOut0,
		const float	radIn0 = `0.0f`
	)			`[inline]`

Definition at line 476 of file pDomain.h.

References ctr, fsqr(), radDif, radIn, radInSqr, radOut, radOutSqr, and ThinShell.

Referenced by copy().

00477     {
00478         ctr = ctr0;
00479         if(radOut0 < radIn0) {
00480             radOut = radIn0; radIn = radOut0;
00481         } else {
00482             radOut = radOut0; radIn = radIn0;
00483         }
00484         if(radIn < 0.0f) radIn = 0.0f;
00485 
00486         radOutSqr = fsqr(radOut);
00487         radInSqr = fsqr(radIn);
00488 
00489         ThinShell = (radIn == radOut);
00490         radDif = radOut - radIn;
00491     }

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PDSphere::~PDSphere ( ) [inline]

Definition at line 493 of file pDomain.h.

00494     {
00495     }

Member Function Documentation

bool PDSphere::Within ( const pVec & pos ) const [inline, virtual]

Implements pDomain.

Definition at line 497 of file pDomain.h.

References ctr, pVec::length2(), and radInSqr.

Referenced by PABounce::Exec().

00498     {
00499         pVec rvec(pos - ctr);
00500         float rSqr = rvec.length2();
00501         return rSqr <= radOutSqr && rSqr >= radInSqr;
00502     }

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pVec PDSphere::Generate ( ) const [inline, virtual]

Implements pDomain.

Definition at line 504 of file pDomain.h.

References ctr, fsqr(), pVec::length2(), pVec::normalize(), pos, pRandf, pRandVec(), radDif, radIn, radOut, ThinShell, and vHalf.

00505     {
00506         pVec pos;
00507 
00508         do {
00509             pos = pRandVec() - vHalf; // Point on [-0.5,0.5] box
00510         } while (pos.length2() > fsqr(0.5)); // Make sure it's also on r=0.5 sphere.
00511         pos.normalize(); // Now it's on r=1 spherical shell
00512 
00513         // Scale unit sphere pos by [0..r] and translate
00514         if(ThinShell)
00515             pos = ctr + pos * radOut;
00516         else
00517             pos = ctr + pos * (radIn + pRandf() * radDif);
00518 
00519         return pos;
00520     }

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pDomain* PDSphere::copy ( ) const [inline, virtual]

Implements pDomain.

Definition at line 522 of file pDomain.h.

References PDSphere().

00523     {
00524         PDSphere *P = new PDSphere(*this);
00525         return P;
00526     }

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Member Data Documentation

pVec PDSphere::ctr

Definition at line 471 of file pDomain.h.

Referenced by PABounce::Exec(), PAAvoid::Exec(), Generate(), PDSphere(), and Within().

float PDSphere::radOut