#include?“aabb.h“

const?int?kNumCorners?=?8;
const?int?kMaxIndices?=?36;

//?Overloaded?constructor
CAxisAlgnBB::CAxisAlgnBB（const?CPos?&min?const?CPos?&max）
{
	set（min?max）;
}

void?CAxisAlgnBB::render（int?argb）
{
	SVertex?verts[kNumCorners];
	WORD?indexList[kMaxIndices]?=?{	0?2?3
									3?1?0
									7?6?4
									4?5?7
									4?6?2?
									2?0?4
									1?3?7
									7?5?1
									4?0?1
									1?5?4
									2?6?7
									7?3?2?};

	//?Fill?in?the?8?vertices
	for（int?i?=?0;?i?	{
		CPos?pos?=?getCorner（i）;
		
		verts[i].x?=?pos.x;
		verts[i].y?=?pos.y;
		verts[i].z?=?pos.z;
		verts[i].color?=?argb;
	}

	//?Render?the?AABB
	g3D->render（verts?kNumCorners?indexList?kMaxIndices）;

	//?Render?lines?on?the?top?and?bottom?of?the?the?front?and?
	//?back?sides?of?the?box.??This?allow?us?to?see?the?full?dimensions
	//?of?the?AABB?better.
	for（int?i?=?0;?i?		verts[i].color?=?D3DCOLOR_ARGB（255?255?255?255）;

	g3D->renderLine（verts?kNumCorners）;
}

/*	So?lets?quickly?digest?how?this?algorithm?works.??First?we?assume?that?the
	origin?of?the?ray?is?inside?of?the?AABB.??If?this?is?true??then?we?know?that?
	the?ray?MUST?collide?with?AABB?because?it?is?contained?inside?of?the?AABB.

	If?the?origin?is?not?inside?of?the?AABB?then?we?check?to?see?if?the?
	direction?the?ray?is?heading?is?away?from?the?AABB.??If?it?is?then?it
	must?NOT?collide.

	Lastly?if?the?origin?is?outside?of?the?AABB?and?the?ray?is?heading?towards
	the?AABB??we?use?the?length?of?the?ray?and?test?to?see?if?there?is?an
	intersection.
*/
bool?CAxisAlgnBB::intersect（const?CRay?&ray）
{
	//?Compute?the?ray?delta
	CVector?rayDelta?=?ray.getDir（）?*?ray.getLength（）;

	//?First?we?check?to?see?if?the?origin?of?the?ray?is?
	//?inside?the?AABB.??If?it?is?the?ray?intersects?the?AABB?so?
	//?we‘ll?return?true.??We?start?by?assuming?the?ray?origin?is?
	//?inside?the?AABB
	bool?inside?=?true;

	//?This?stores?the?distance?from?either?the?min?or?max?（xyz）?to?the?ray‘s
	//?origin?（xyz）?respectively?divided?by?the?length?of?the?ray.??The?largest
	//?value?has?the?delta?time?of?a?possible?intersection.
	float?xt?yt?zt;
	
	//?Test?the?X?component?of?the?ray‘s?origin?to?see?if?we?are?inside?or?not
	if（ray.getOrigin（）.x?	{
		xt?=?mMin.x?-?ray.getOrigin（）.x;
		
		if（xt?>?rayDelta.x）?//?If?the?ray?is?moving?away?from?the?AABB?there?is?no?intersection?
			return?false;
		
		xt?/=?rayDelta.x;?
		inside?=?false;
	}?
	else?if（ray.getOrigin（）.x?>?mMax.x）
	{
		xt?=?mMax.x?-?ray.getOrigin（）.x;
		
		if（xt?			return?false;
		
		xt?/=?rayDelta.x;
		inside?=?false;
	}?
	else
	{
		//?Later?on?we?use?the?“xt“?“yt“?and?“zt“?variables?to?determine?which?plane?（either
		//?xy?xz?or?yz）?we?may?collide?with.??Since?the?x?compone

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????7181??2011-10-29?09:17??Ray?and?AABB?Collision\aabb.cpp

?????文件???????3496??2006-11-26?19:44??Ray?and?AABB?Collision\aabb.h

?????文件???????9887??2006-06-24?12:17??Ray?and?AABB?Collision\d3d_obj.cpp

?????文件???????3140??2011-10-28?20:58??Ray?and?AABB?Collision\d3d_obj.h

?????文件??????44677??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\aabb.obj

?????文件???????6814??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\BuildLog.htm

?????文件??????59448??2011-10-28?20:58??Ray?and?AABB?Collision\Debug\d3d_obj.obj

?????文件?????????65??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\mt.dep

?????文件??????36593??2011-10-28?20:58??Ray?and?AABB?Collision\Debug\ray.obj

?????文件??????69632??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\RayAABBCollision.exe

?????文件????????403??2011-10-28?20:58??Ray?and?AABB?Collision\Debug\RayAABBCollision.exe.embed.manifest

?????文件????????468??2011-10-28?20:58??Ray?and?AABB?Collision\Debug\RayAABBCollision.exe.embed.manifest.res

?????文件????????385??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\RayAABBCollision.exe.intermediate.manifest

?????文件?????404712??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\RayAABBCollision.ilk

?????文件?????617472??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\RayAABBCollision.pdb

?????文件?????502784??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\vc80.idb

?????文件?????225280??2011-10-29?22:18??Ray?and?AABB?Collision\Debug\vc80.pdb

?????文件??????18264??2011-10-28?20:56??Ray?and?AABB?Collision\Debug\vector.obj

?????文件??????46612??2011-10-29?08:46??Ray?and?AABB?Collision\Debug\win_main.obj

?????文件????????886??2011-03-28?17:01??Ray?and?AABB?Collision\ray.cpp

?????文件???????2614??2011-03-28?17:01??Ray?and?AABB?Collision\ray.h

?????文件???11881472??2011-11-02?21:29??Ray?and?AABB?Collision\RayAABBCollision.ncb

?????文件????????896??2006-11-26?19:54??Ray?and?AABB?Collision\RayAABBCollision.sln

????..A..H.?????69120??2011-11-02?21:29??Ray?and?AABB?Collision\RayAABBCollision.suo

?????文件???????4560??2011-10-29?22:18??Ray?and?AABB?Collision\RayAABBCollision.vcproj

?????文件???????1433??2011-03-28?19:54??Ray?and?AABB?Collision\RayAABBCollision.vcproj.2083C87BAA6145D.Administrator.user

?????文件???????1413??2011-11-02?21:29??Ray?and?AABB?Collision\RayAABBCollision.vcproj.HP-PC.HP.user

?????文件???????2368??2006-11-26?20:05??Ray?and?AABB?Collision\ReadMe?-?RayPlaneCollide.txt

?????文件???????3009??2006-06-24?12:17??Ray?and?AABB?Collision\vector.cpp

?????文件???????1569??2011-03-27?22:23??Ray?and?AABB?Collision\vector.h

............此處省略7個文件信息