一个网格模型中可以包含多个动画集，在渲染网格时通过动画控制器可以在各个动画集之间进行切换，从而可以在渲染网格模型时根据具体情况播放不同的动画。这里将具有多个骨骼动画的网格模型称为"多骨骼动画网格模型"，当然骨骼动画网格模型也完全可以具有蒙皮信息，下面的示例程序演示了渲染多骨骼动画网格模型时骨骼动画之间的切换，骨骼动画间的切换是通过动画控制器来完成的。
在示例程序MultiAnimMesh中渲染的网格模型具有4个动画集，即具有4个动作，通过按下数字键"1" ~ "4"在4个动作之间进行切换：
case 49: // press key "1" g_skin_mesh->m_anim_controller->GetAnimationSetByName("Walk", &g_anim_set); g_skin_mesh->m_anim_controller->SetTrackAnimationSet(0, g_anim_set); break;
case 50: // press key "2" g_skin_mesh->m_anim_controller->GetAnimationSetByName("Jog", &g_anim_set); g_skin_mesh->m_anim_controller->SetTrackAnimationSet(0, g_anim_set); break;
case 51: // press key "3" g_skin_mesh->m_anim_controller->GetAnimationSetByName("Loiter", &g_anim_set); g_skin_mesh->m_anim_controller->SetTrackAnimationSet(0, g_anim_set); break;
case 52: // press key "4" g_skin_mesh->m_anim_controller->GetAnimationSetByName("Wave", &g_anim_set); g_skin_mesh->m_anim_controller->SetTrackAnimationSet(0, g_anim_set); break;
GetAnimationSetByName()根据名称取得动画播放集：
Gets an animation set, given its name.
HRESULT GetAnimationSetByName( LPCSTR pName, LPD3DXANIMATIONSET * ppAnimSet);
Parameters
pName
[in] String containing the name of the animation set.
ppAnimSet
[out] Pointer to the ID3DXAnimationSet animation set.
Return Values
If the method succeeds, the return value is S_OK. If the method fails, the following value will be returned: D3DERR_INVALIDCALL.
Remarks
The animation controller contains an array of animation sets. This method returns an animation set that has the given name.
SetTrackAnimationSet()设置要播放的动画集：
Applies the animation set to the specified track.
HRESULT SetTrackAnimationSet( UINT Track, LPD3DXANIMATIONSET pAnimSet);
Parameters
Track
[in] Identifier of the track to which the animation set is applied.
pAnimSet
[in] Pointer to the ID3DXAnimationSet animation set to be added to the track.
Return Values
If the method succeeds, the return value is S_OK. If the method fails, the return value can be one of the following values: D3DERR_INVALIDCALL, E_OUTOFMEMORY.
Remarks
This method sets the animation set to the specified track for mixing. The animation set for each track is blended according to the track weight and speed when ID3DXAnimationController::AdvanceTime is called.
运行效果图：
步行
跑步
观望
挥手
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计算机技术与应用 → 『 C/C++编程思想 』 → 网格模型高级技术（4）
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2009/1/5 13:45:00
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网格模型高级技术（4）(7681字) － 卷积内核，2009年1月5日
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