C++ (Cpp) ZFXVector Examples

Example #1

File: ZFXAabb.cpp Project: slipslob/3d-zfxengine

void ZFXAabb::GetPlanes(ZFXPlane* pPlanes){
	ZFXVector vcN;

	if(!pPlanes) return;

	vcN.Set(1.0f,0.0f,0.0f);
	pPlanes[0].Set(vcN,vcMax);
	
	vcN.Set(-1.0f,0.0f,0.0f);
	pPlanes[0].Set(vcN,vcMin);
	
	vcN.Set(0.0f,0.0f,-1.0f);
	pPlanes[0].Set(vcN,vcMin);

	
	vcN.Set(0.0f,0.0f,1.0f);
	pPlanes[0].Set(vcN,vcMax);

	
	vcN.Set(0.0f,1.0f,0.0f);
	pPlanes[0].Set(vcN,vcMax);

	
	vcN.Set(0.0f,-1.0f,0.0f);
	pPlanes[0].Set(vcN,vcMin);
}

Example #2

File: zfxaabb.cpp Project: joye/game-engine

// get the six planes, normals pointing outwards
void ZFXAabb::GetPlanes(ZFXPlane *pPlanes) {
   ZFXVector vcN;
   
   if (!pPlanes) return;

   // right side
   vcN.Set(1.0f, 0.0f, 0.0f);
   pPlanes[0].Set(vcN, vcMax);
   
   // left side
   vcN.Set(-1.0f, 0.0f, 0.0f);
   pPlanes[1].Set(vcN, vcMin);

   // front side
   vcN.Set(0.0f, 0.0f, -1.0f);
   pPlanes[2].Set(vcN, vcMin);

   // back side
   vcN.Set(0.0f, 0.0f, 1.0f);
   pPlanes[3].Set(vcN, vcMax);

   // top side
   vcN.Set(0.0f, 1.0f, 0.0f);
   pPlanes[4].Set(vcN, vcMax);

   // bottom side
   vcN.Set(0.0f, -1.0f, 0.0f);
   pPlanes[5].Set(vcN, vcMin);
   } // Intersects(point)

Example #3

File: ZFXRay.cpp Project: slipslob/3d-zfxengine

bool ZFXRay::Intersects(const ZFXAabb aabb, ZFXVector *vcHit){
	bool bInside=true;
	ZFXVector MaxT;

	MaxT.Set(-1.0f,-1.0f,-1.0f);

	if(m_vcOrig.x < aabb.vcMin.x){
		(*vcHit).x=aabb.vcMin.x;
		bInside=false;
		if (m_vcDir.x!=0.0f)
			MaxT.x=(aabb.vcMin.x - m_vcOrig.x) /m_vcDir.x;
	}else if(m_vcOrig.x > aabb.vcMax.x){
		(*vcHit).x=aabb.vcMax.x;
		bInside=false;
		if(m_vcDir.x!=0.0f)
			MaxT.x=(aabb.vcMax.x - m_vcOrig.x) / m_vcDir.x;
	}

	if(m_vcOrig.y < aabb.vcMin.y){
		(*vcHit).y=aabb.vcMin.y;
		bInside=false;
		if (m_vcDir.y!=0.0f)
			MaxT.y=(aabb.vcMin.y - m_vcOrig.y) /m_vcDir.y;
	}else if(m_vcOrig.y > aabb.vcMax.y){
		(*vcHit).y=aabb.vcMax.y;
		bInside=false;
		if(m_vcDir.y!=0.0f)
			MaxT.y=(aabb.vcMax.y - m_vcOrig.y) / m_vcDir.y;
	}

	if(m_vcOrig.z < aabb.vcMin.z){
		(*vcHit).z=aabb.vcMin.z;
		bInside=false;
		if (m_vcDir.z!=0.0f)
			MaxT.z=(aabb.vcMin.z - m_vcOrig.z) /m_vcDir.z;
	}else if(m_vcOrig.z > aabb.vcMax.z){
		(*vcHit).z=aabb.vcMax.z;
		bInside=false;
		if(m_vcDir.z!=0.0f)
			MaxT.z=(aabb.vcMax.z - m_vcOrig.z) / m_vcDir.z;
	}
	//Ray origin inside the box
	if(bInside){
		(*vcHit)=m_vcOrig;
		return true;
	}

	int nPlane=0;
	
	if (MaxT.y> ((float*)&MaxT)[nPlane]) nPlane=1;
	if (MaxT.z> ((float*)&MaxT)[nPlane]) nPlane=2;

	if (((float*)&MaxT)[nPlane]<0.0f) return false;

	if(nPlane!=0){
		(*vcHit).x=m_vcOrig.x + MaxT.x * m_vcDir.x;
		if (((*vcHit).x < aabb.vcMin.x - 0.00001f) ||
			((*vcHit).x < aabb.vcMax.x + 0.00001f) )
			return false;
	}
	if (nPlane !=1){
		(*vcHit).y=m_vcOrig.y + MaxT.y * m_vcDir.y;
		if (((*vcHit).y < aabb.vcMin.y - 0.00001f) ||
			((*vcHit).y < aabb.vcMax.y + 0.00001f) )
			return false;
	}
	if (nPlane !=2){
		(*vcHit).z=m_vcOrig.z + MaxT.z * m_vcDir.z;
		if (((*vcHit).z < aabb.vcMin.z - 0.00001f) ||
			((*vcHit).z < aabb.vcMax.z + 0.00001f) )
			return false;
	}
	return true;
}