struct BoundBox
{
	BoundBox();

	bool isPointInside(D3DXVECTOR3& p); //是否包含点

	D3DXVECTOR3 _min;
	D3DXVECTOR3 _max;
};
BoundBox::BoundBox()
{
	_min.x = -Infinity;
	_min.y = -Infinity;
	_min.z = -Infinity;

	_max.x = Infinity;
	_max.y = Infinity;
	_max.z = Infinity;
}
bool BoundBox::isPointInside(D3DXVECTOR3& p)
{
	if (p.x >= _min.x && p.y >= _min.y && p.z >= _min.z &&
		p.x <= _max.x && p.y <= _max.y && p.z <= _max.z)
	{
		return true;
	}
	else
	{
		return false;
	}
}

ID3DXPMesh* PMesh = 0;

ID3DXMesh* mesh;
ID3DXMesh* wall;

ID3DXMesh* mesh = 0;
vector<D3DMATERIAL9> Mtrls(0);
vector<IDirect3DTexture9*> Textures(0);
DWORD numMtrl = 0;

ID3DXFont* font = 0;

ID3DXMesh* Teapot = 0;
ID3DXMesh* Mirror = 0;

//开启alpha混合
g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, true);
//设置融合因子
g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
//（设置融合方式，像素相加）默认为相加，可以不写此句
g_pd3dDevice->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);