自学教程：C++ vb函数代码示例

int main(){    {    typedef std::vector<bool> T;    typedef std::hash<T> H;    static_assert((std::is_base_of<std::unary_function<T, std::size_t>,                                   H>::value), "");    bool ba[] = {true, false, true, true, false};    T vb(std::begin(ba), std::end(ba));    H h;    assert(h(vb) != 0);    }#if __cplusplus >= 201103L || defined(_LIBCPP_MSVC)    {    typedef std::vector<bool, min_allocator<bool>> T;    typedef std::hash<T> H;    static_assert((std::is_base_of<std::unary_function<T, std::size_t>,                                   H>::value), "");    bool ba[] = {true, false, true, true, false};    T vb(std::begin(ba), std::end(ba));    H h;    assert(h(vb) != 0);    }#endif}

void TargetObject::BuildMesh()	{	int nverts = 8;	int nfaces = 12;	Point3 va(-sz,-sz,-sz);	Point3 vb( sz, sz, sz);	mesh.setNumVerts(nverts);	mesh.setNumFaces(nfaces);	mesh.setVert(0, Point3( va.x, va.y, va.z));	mesh.setVert(1, Point3( vb.x, va.y, va.z));	mesh.setVert(2, Point3( va.x, vb.y, va.z));	mesh.setVert(3, Point3( vb.x, vb.y, va.z));	mesh.setVert(4, Point3( va.x, va.y, vb.z));	mesh.setVert(5, Point3( vb.x, va.y, vb.z));	mesh.setVert(6, Point3( va.x, vb.y, vb.z));	mesh.setVert(7, Point3( vb.x, vb.y, vb.z));	MakeQuad(&(mesh.faces[ 0]), 0,2,3,1,  1);	MakeQuad(&(mesh.faces[ 2]), 2,0,4,6,  2);	MakeQuad(&(mesh.faces[ 4]), 3,2,6,7,  4);	MakeQuad(&(mesh.faces[ 6]), 1,3,7,5,  8);	MakeQuad(&(mesh.faces[ 8]), 0,1,5,4, 16);	MakeQuad(&(mesh.faces[10]), 4,5,7,6, 32);	mesh.buildNormals();	mesh.EnableEdgeList(1);	}

 bool get(std::string key, XmlRpc::XmlRpcValue& val) {     try     {         bool v;         if (get(key,v)){             XmlRpc::XmlRpcValue vb(v);             val = vb;             return (val.valid());         }         double vd;         if (get(key,vd)){             val = vd;             return (val.valid());         }         int vi;         if (get(key,vi)){             val=vi;             return (val.valid());         }         std::string vs;         if (get(key, vs)){             val=vs.c_str();             return (val.valid());         }     }     catch (...)     {         return false;     }     return false; }

	//----------------------------------------------------------------------	//	//----------------------------------------------------------------------	IVertexBuffer* GLGraphicsDevice::createVertexBuffer( LNVertexElemenst* elements, lnU32 vertexCount, const void* data, bool isDynamic )    {		LRefPtr<GLVertexBuffer> vb( LN_NEW GLVertexBuffer() );		vb->create( this, elements, vertexCount, data, isDynamic );		vb->addRef();		return vb;    }

QVector<QVector3D> SurfaceItem::vertices() const{    QSize size = surface()->size();    qreal w = (m_height * size.width()) / size.height();    qreal h = m_height;    QVector3D pos = m_pos + m_normal * m_depthOffset;    QVector2D center(pos.x(), pos.z());    QVector3D perp = QVector3D::crossProduct(QVector3D(0, 1, 0), m_normal);    QVector2D delta = w * QVector2D(perp.x(), perp.z()).normalized() / 2;    qreal scale = qMin(1.0, m_time.elapsed() * 0.002);    qreal top = m_pos.y() + h * 0.5 * scale;    qreal bottom = m_pos.y() - h * 0.5 * scale;    QVector2D left = center - delta * scale;    QVector2D right = center + delta * scale;    QVector3D va(left.x(), top, left.y());    QVector3D vb(right.x(), top, right.y());    QVector3D vc(right.x(), bottom, right.y());    QVector3D vd(left.x(), bottom, left.y());    QVector<QVector3D> result;    result << va << vb << vc << vd;    return result;}

PointInfo Split( PointInfo &a, PointInfo &b, TLITVERTEX &vec1, TLITVERTEX &vec2, int lineno ){	LineEuqationType l;	l.x = b.y-a.y;	l.y = a.x-b.x;	l.d = -(l.x*b.x+(l.y)*b.y);	double cDot = (vec1.x*l.x + vec1.y*l.y);	double dDot = (vec2.x*l.x + vec2.y*l.y);	double scale = ( - l.d - cDot) / ( dDot - cDot );	v3 va(vec1.x, vec1.y, vec1.z);	v3 vb(vec2.x, vec2.y, vec2.z);	v3 vc = va + ((vb - va) * (float)scale );	PointInfo d = {vc.x, vc.y, vc.z, -1, lineno};	if( a.onLine == b.onLine && a.onLine >= 0 )	{		if( a.onLine == 0 && lineno == 1 )			d.onVtx = 0;		else if ( a.onLine == 0 && lineno == 2 )			d.onVtx = 1;		else if( a.onLine == 1 && lineno == 0 )			d.onVtx = 0;		else if( a.onLine == 1 && lineno == 2 )			d.onVtx = 2;		else if( a.onLine == 2 && lineno == 0 )			d.onVtx = 1;		else if( a.onLine == 2 && lineno == 1 )			d.onVtx = 2;	}	return d;}

int agentppSimDeleteTableContents::prepare_set_request(Request* req, int& ind){	int status;	if ((status = MibLeaf::prepare_set_request(req, ind)) !=	    SNMP_ERROR_SUCCESS) return status;	Oidx toid;	Vbx vb(req->get_value(ind));	if (vb.get_value(toid) != SNMP_CLASS_SUCCESS)	    return SNMP_ERROR_WRONG_TYPE;	MibEntryPtr entry = 0;	status = #ifdef _SNMPv3	  mib->find_managing_object(mib->get_context(req->get_context()),				    toid,				    entry, req);#else	  mib->find_managing_object(mib->get_default_context(),				    toid,				    entry, req);#endif	  	if (status != SNMP_ERROR_SUCCESS) return SNMP_ERROR_WRONG_VALUE;	if (entry->type() != AGENTPP_TABLE) return SNMP_ERROR_WRONG_VALUE;	return SNMP_ERROR_SUCCESS;}

	UINT32 ScriptVirtualButton::internal_InitVirtualButton(MonoString* name)	{		String nameStr = MonoUtil::monoToString(name);		VirtualButton vb(nameStr);		return vb.buttonIdentifier;	}

// runs the raytrace over all tests and saves the corresponding imagesint main(int argc, char** argv) {        // test that glfw and glew are linked properly    uiloop();    message("GLFW and GLEW seem to work/n/n");        // test max_component function    vec3f v(1,2,-3);    float max_val = max_component(v);    message("Result of max_component: %f/n", max_val);        // test sum of three vectors    vec3f va(1,0,0);    vec3f vb(0,4,0);    vec3f vc(0,0,2);    vec3f vabc = sum_three(va, vb, vc);    message("Result of sum_three: %s/n", tostring(vabc).c_str());        // test sum of vectors    vector<vec3f> vs = {        {3.14,1.5,2.7},        {2.71,8.2,8.2},        {1.61,8.0,3.4},        {1.41,4.2,1.4},    };    vec3f vsum = sum_many(vs);    message("Result of sum_many: %s/n", tostring(vsum).c_str());    message("/nThis message indicates a successful build!/n/n");    return 0;}

/** * A fun
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