Question

求高手赐教，本人正在学习基于C#的directx开发，在摄像机旋转遇到问题了,无法绕X轴旋转360度。附部分代码

当绕X轴旋转时，从90度旋转到-90度正常，再继续旋转时无法旋转过去，不能达到360度旋转，求高手赐教
{case Keys.Up:
CamPostion.Subtract(CamTarget);
tempV4 = Vector3.Transform(CamPostion, Matrix.RotationQuaternion(Quaternion.RotationAxis(new Vector3(currentView.M11, currentView.M21, currentView.M31), -angleY)));
CamPostion.X = tempV4.X + CamTarget.X;
CamPostion.Y = tempV4.Y + CamTarget.Y;
CamPostion.Z = tempV4.Z + CamTarget.Z;
break;
case Keys.Down:
CamPostion.Subtract(CamTarget);
tempV4 = Vector3.Transform(CamPostion, Matrix.RotationQuaternion(Quaternion.RotationAxis(new Vector3(currentView.M11, currentView.M21, currentView.M31), angleY)));
CamPostion.X = tempV4.X + CamTarget.X;
CamPostion.Y = tempV4.Y + CamTarget.Y;
CamPostion.Z = tempV4.Z + CamTarget.Z;
break;
}
Matrix viewMatrix = Matrix.LookAtLH(CamPostion, CamTarget, new Vector3(0, 1, 0));
device.Transform.View = viewMatrix;

Answer 1

1买两个ddr 333 1G内存换上 内存达到2g运行速度会好很多
2再换一个大点的硬盘吧，2T以内都可以识别
3有条件换个好点的cpu Pentium（奔腾）M 最高型号有2.26GHZ的 会给你的整机性能提分不少
就这3条 稳定运行win7