DG question

  
bool CGraphic::drawAdvance (float x, float y, float rotation, D3DCOLOR color, CVideo &PrimaryVideoClass)
{
	VERTEX v1,v2,v3,v4;
	VERTEX Vertex_Array[4];

	D3DXMATRIX matRot, matTrans, matTrans2, matWorld;

	float Breite = (float)m_ImageInfo.Width;
	float Hoehe  = (float)m_ImageInfo.Height;

	v1.x		= x;
	v1.y		= y;
	v1.z		= 0.5f;
	v1.u		= 0.0f;
	v1.v		= 0.0f;
	v1.color	= color;

	v2.x		= Breite + x;
	v2.y		= y;
	v2.z		= 0.5f;
	v2.u		= 1.0f;
	v2.v		= 0.0f;
	v2.color	= color;

	v3.x		= x;
	v3.y		= Hoehe + y;
	v3.z		= 0.5f;
	v3.u		= 0.0f;
	v3.v		= 1.0f;
	v3.color	= color;

	v4.x		= Breite + x;
	v4.y		= Hoehe + y;
	v4.z		= 0.5f;
	v4.u		= 1.0f;
	v4.v		= 1.0f;
	v4.color	= color;

	Vertex_Array[0] = v2;
	Vertex_Array[1] = v1;
	Vertex_Array[2] = v4;
	Vertex_Array[3] = v3;

	D3DXMatrixRotationZ(&matRot, PI * rotation / 180);
	PrimaryVideoClass.getDevice()->SetTransform(D3DTS_WORLD, &matRot);

	D3DXMatrixTranslation(&matTrans,-x-(Breite/2),-y-(Hoehe/2), 0.0f);
	 
	D3DXMatrixTranslation(&matTrans2,x+(Breite/2),y+(Hoehe/2), 0.0f); 
	  
	D3DXMatrixMultiply(&matWorld, &matTrans, &matRot);

	D3DXMatrixMultiply(&matWorld, &matWorld, &matTrans2);

	PrimaryVideoClass.getDevice()->SetTransform(D3DTS_WORLD, &matWorld);
	PrimaryVideoClass.getDevice()->SetTexture(0, m_Texture);	

	PrimaryVideoClass.getDevice()->SetTextureStageState(0, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
	PrimaryVideoClass.getDevice()->SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);


	PrimaryVideoClass.getDevice()->SetTransform(D3DTS_PROJECTION, &PrimaryVideoClass.matProj);

	PrimaryVideoClass.getDevice()->SetVertexShader(VERTEXCAPS);
	PrimaryVideoClass.getDevice()->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP,2,&Vertex_Array[0],sizeof(VERTEX));

	D3DXMatrixMultiply(&matWorld, &matWorld, &matTrans2); 
	D3DXMatrixRotationZ  (&matWorld, 0);
	PrimaryVideoClass.getDevice()->SetTransform(D3DTS_WORLD, &matWorld);

	return (true);

}