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網(wǎng)格模型高級(jí)技術(shù)（8）

漸變（tweening）網(wǎng)格模型是Direct3D中實(shí)現(xiàn)模型動(dòng)畫最簡(jiǎn)單的方式和途徑，它的原理也非常簡(jiǎn)單。例如對(duì)于場(chǎng)景內(nèi)的某個(gè)網(wǎng)格模型，最初只記錄t0時(shí)刻和t1時(shí)刻該網(wǎng)格模型的狀態(tài)（即這兩個(gè)時(shí)刻網(wǎng)格模型中所有頂點(diǎn)的位置），對(duì)于t0到t1這段時(shí)間內(nèi)的任意時(shí)刻t_current，根據(jù)該時(shí)刻距離t0和t1時(shí)刻的遠(yuǎn)近，實(shí)時(shí)地分配給這兩個(gè)網(wǎng)格模型不同的權(quán)重，然后按照這兩個(gè)網(wǎng)格模型中頂點(diǎn)的不同位置和它們各自的權(quán)重進(jìn)行插值，計(jì)算出t_current時(shí)刻整個(gè)網(wǎng)格模型中所有頂點(diǎn)的位置，從而實(shí)現(xiàn)動(dòng)畫效果。

通常將t0時(shí)刻的網(wǎng)格模型稱為源網(wǎng)格模型，將t1時(shí)刻的網(wǎng)格模型稱為目標(biāo)網(wǎng)格模型，將最后擬合得到的網(wǎng)格模型稱為結(jié)果網(wǎng)格模型。當(dāng)然初始條件還可以是3個(gè)或更多時(shí)刻網(wǎng)格模型的狀態(tài)，再根據(jù)時(shí)間的推移對(duì)這些網(wǎng)格模型進(jìn)行插值而實(shí)時(shí)得到當(dāng)前時(shí)刻網(wǎng)格模型的狀態(tài)。

事實(shí)上，漸變網(wǎng)格模型就是對(duì)一系列已知的網(wǎng)格模型進(jìn)行插值得到最終的網(wǎng)格模型。

首先，我們需要從.x文件加載源網(wǎng)格模型和目標(biāo)網(wǎng)格模型:

V_RETURN(D3DXLoadMeshFromXW(L"source.x", D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, &g_num_materials, 
							&g_source_mesh));

V_RETURN(D3DXLoadMeshFromXW(L"target.x", D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, &g_num_materials, 
							&g_target_mesh));

由于我們僅對(duì)兩個(gè)網(wǎng)格模型中的頂點(diǎn)位置坐標(biāo)和法向量進(jìn)行插值，所以在創(chuàng)建好源網(wǎng)格模型和目標(biāo)網(wǎng)格模型后，需要按照指定的頂點(diǎn)格式克隆源網(wǎng)格模型、目標(biāo)網(wǎng)格模型和結(jié)果網(wǎng)格模型，使這時(shí)的源網(wǎng)格模型、目標(biāo)網(wǎng)格模型和結(jié)果網(wǎng)格模型僅包含頂點(diǎn)位置和法向量：

ID3DXMesh* cloned_mesh;

// clone source mesh with specified vertex format
g_source_mesh->CloneMeshFVF(g_source_mesh->GetOptions(), CUSTOM_VERTEX_FVF, pd3dDevice, &cloned_mesh);
release_com(g_source_mesh);
g_source_mesh = cloned_mesh;

// clone target mesh with specified vertex format
g_target_mesh->CloneMeshFVF(g_target_mesh->GetOptions(), CUSTOM_VERTEX_FVF, pd3dDevice, &cloned_mesh);
release_com(g_target_mesh);
g_target_mesh = cloned_mesh;

// clone result mesh with specified vertex format from target mesh
g_target_mesh->CloneMeshFVF(g_target_mesh->GetOptions(), CUSTOM_VERTEX_FVF, pd3dDevice, &g_result_mesh);

g_source_mesh->GetVertexBuffer(&g_source_vb);
g_target_mesh->GetVertexBuffer(&g_target_vb);
g_result_mesh->GetVertexBuffer(&g_result_vb);

其中源網(wǎng)格模型的狀態(tài)如下圖所示：

目標(biāo)網(wǎng)格模型的狀態(tài)如下圖所示：

最后我們根據(jù)程序當(dāng)前運(yùn)行時(shí)間，分別計(jì)算源網(wǎng)格模型和目標(biāo)網(wǎng)格模型的權(quán)重，利用計(jì)算出的權(quán)重對(duì)源網(wǎng)格模型和目標(biāo)網(wǎng)格模型的頂點(diǎn)坐標(biāo)和法向量進(jìn)行插值，得到當(dāng)前時(shí)刻的結(jié)果網(wǎng)格模型：

sVertex* source_vertices;
sVertex* target_vertices;
sVertex* result_vertices;

g_source_vb->Lock(0, 0, (void**) &source_vertices, 0);
g_target_vb->Lock(0, 0, (void**) &target_vertices, 0);
g_result_vb->Lock(0, 0, (void**) &result_vertices, 0);

float time_factor = (float)(timeGetTime() % 2000) / 1000.0f;
float scalar	  = (time_factor <= 1.0f) ? time_factor : (2.0f - time_factor);

for(DWORD i = 0; i < g_result_mesh->GetNumVertices(); i++)
{
	result_vertices[i].x = source_vertices[i].x * (1.0f - scalar) + target_vertices[i].x * scalar;
	result_vertices[i].y = source_vertices[i].y * (1.0f - scalar) + target_vertices[i].y * scalar;
	result_vertices[i].z = source_vertices[i].z * (1.0f - scalar) + target_vertices[i].z * scalar;

	result_vertices[i].nx = source_vertices[i].nx * (1.0f - scalar) + target_vertices[i].nx * scalar;
	result_vertices[i].ny = source_vertices[i].ny * (1.0f - scalar) + target_vertices[i].ny * scalar;
	result_vertices[i].nz = source_vertices[i].nz * (1.0f - scalar) + target_vertices[i].nz * scalar;
}

g_source_vb->Unlock();
g_target_vb->Unlock();
g_result_vb->Unlock();

為了讓海豚動(dòng)起來，我們還必須修改世界坐標(biāo)矩陣：

// move dolphin around circle

float kick_freq = float(2.0f * fTime);
float phas       = float(fTime) / 3.0f;

D3DXMATRIX mat_dolphin, mat_trans, mat_rot_y, mat_rot_z;

D3DXMatrixScaling(&mat_dolphin, 0.01f, 0.01f, 0.01f);
D3DXMatrixRotationZ(&mat_rot_z, -cosf(kick_freq) / 6);
D3DXMatrixRotationY(&mat_rot_y, phase);
D3DXMatrixTranslation(&mat_trans, -5 * sinf(phase), sinf(kick_freq)/2, 10 - 10 * cosf(phase));

mat_dolphin = mat_dolphin * mat_rot_z * mat_rot_y * mat_trans;;

pd3dDevice->SetTransform(D3DTS_WORLD, &mat_dolphin);

運(yùn)行效果圖：

主程序：

#include "dxstdafx.h"
#include "resource.h"

#pragma warning(disable : 4127 4995)

#define IDC_TOGGLE_FULLSCREEN    1
#define IDC_TOGGLE_REF            2
#define IDC_CHANGE_DEVICE        3

struct sVertex
{
    float x, y, z;
    float nx, ny, nz;
};

const DWORD CUSTOM_VERTEX_FVF = D3DFVF_XYZ | D3DFVF_NORMAL;

#define release_com(p)    do { if(p) { (p)->Release(); (p) = NULL; } } while(0)

ID3DXFont*                    g_font;
ID3DXSprite*                g_text_sprite;
bool                        g_show_help;

CDXUTDialogResourceManager    g_dlg_resource_manager;
CD3DSettingsDlg                g_settings_dlg;
CDXUTDialog                    g_button_dlg;

ID3DXMesh*                    g_source_mesh;
ID3DXMesh*                    g_target_mesh;
ID3DXMesh*                    g_result_mesh;

IDirect3DVertexBuffer9*        g_source_vb;
IDirect3DVertexBuffer9*        g_target_vb;
IDirect3DVertexBuffer9*        g_result_vb;

DWORD                        g_num_materials;

//--------------------------------------------------------------------------------------
// Rejects any devices that aren't acceptable by returning false
//--------------------------------------------------------------------------------------
bool CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat,
                                  D3DFORMAT BackBufferFormat, bool bWindowed, void* pUserContext )
{
    // Typically want to skip backbuffer formats that don't support alpha blending

    IDirect3D9* pD3D = DXUTGetD3DObject();

    if( FAILED( pD3D->CheckDeviceFormat( pCaps->AdapterOrdinal, pCaps->DeviceType, AdapterFormat,
                    D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, D3DRTYPE_TEXTURE, BackBufferFormat ) ) )
        return false;

    return true;
}

//--------------------------------------------------------------------------------------
// Before a device is created, modify the device settings as needed.
//--------------------------------------------------------------------------------------
bool CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, const D3DCAPS9* pCaps, void* pUserContext )
{
    // If video card does not support hardware vertex processing, then uses sofaware vertex processing.
    if((pCaps->DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) == 0)
        pDeviceSettings->BehaviorFlags = D3DCREATE_SOFTWARE_VERTEXPROCESSING;

    static bool is_first_time = true;

    if(is_first_time)
    {
        is_first_time = false;

        // if using reference device, then pop a warning message box.
        if(pDeviceSettings->DeviceType == D3DDEVTYPE_REF)
            DXUTDisplaySwitchingToREFWarning();
    }

    return true;
}

//--------------------------------------------------------------------------------------
// Remove path from fullname, and convert filename from multibyte to wchar.
//--------------------------------------------------------------------------------------
void RemovePathFromFileName(LPSTR fullname, LPWSTR wfilename)
{
    WCHAR wbuf[MAX_PATH]  = {0};
    MultiByteToWideChar(CP_ACP, 0, fullname, -1, wbuf, MAX_PATH);

    LPWSTR w_last_back_slash = wcsrchr(wbuf, '\\');

    if(w_last_back_slash)
        lstrcpy(wfilename, ++w_last_back_slash);
    else
        lstrcpy(wfilename, wbuf);
}

//--------------------------------------------------------------------------------------
// Create any D3DPOOL_MANAGED resources here
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9* pd3dDevice,
                                 const D3DSURFACE_DESC* pBackBufferSurfaceDesc,
                                 void* pUserContext )
{
    HRESULT    hr;

    V_RETURN(g_dlg_resource_manager.OnCreateDevice(pd3dDevice));
    V_RETURN(g_settings_dlg.OnCreateDevice(pd3dDevice));

    D3DXCreateFont(pd3dDevice, 18, 0, FW_BOLD, 1, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, DEFAULT_QUALITY,
                   DEFAULT_PITCH | FF_DONTCARE, L"Arial", &g_font);

    V_RETURN(D3DXLoadMeshFromXW(L"source.x", D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, &g_num_materials,
                                &g_source_mesh));

    V_RETURN(D3DXLoadMeshFromXW(L"target.x", D3DXMESH_MANAGED, pd3dDevice, NULL, NULL, NULL, &g_num_materials,
                                &g_target_mesh));

    ID3DXMesh* cloned_mesh;

    // clone source mesh with specified vertex format
    g_source_mesh->CloneMeshFVF(g_source_mesh->GetOptions(), CUSTOM_VERTEX_FVF, pd3dDevice, &cloned_mesh);
    release_com(g_source_mesh);
    g_source_mesh = cloned_mesh;

    // clone target mesh with specified vertex format
    g_target_mesh->CloneMeshFVF(g_target_mesh->GetOptions(), CUSTOM_VERTEX_FVF, pd3dDevice, &cloned_mesh);
    release_com(g_target_mesh);
    g_target_mesh = cloned_mesh;

    // clone result mesh with specified vertex format from target mesh
    g_target_mesh->CloneMeshFVF(g_target_mesh->GetOptions(), CUSTOM_VERTEX_FVF, pd3dDevice, &g_result_mesh);

    g_source_mesh->GetVertexBuffer(&g_source_vb);
    g_target_mesh->GetVertexBuffer(&g_target_vb);
    g_result_mesh->GetVertexBuffer(&g_result_vb);

    return S_OK;
}

//--------------------------------------------------------------------------------------
// Create any D3DPOOL_DEFAULT resources here
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice,
                                const D3DSURFACE_DESC* pBackBufferSurfaceDesc,
                                void* pUserContext )
{
    HRESULT hr;

    V_RETURN(g_dlg_resource_manager.OnResetDevice());
    V_RETURN(g_settings_dlg.OnResetDevice());
    V_RETURN(g_font->OnResetDevice());
    V_RETURN(D3DXCreateSprite(pd3dDevice, &g_text_sprite));

    // set dialog position and size

    g_button_dlg.SetLocation(pBackBufferSurfaceDesc->Width - 170, 0);
    g_button_dlg.SetSize(170, 170);

    // setup view matrix

    D3DXMATRIX mat_view;
    D3DXVECTOR3 eye(0.0f, 0.0f,  -8.0f);
    D3DXVECTOR3  at(0.0f, 0.0f,  0.0f);
    D3DXVECTOR3  up(0.0f, 1.0f,  0.0f);

    D3DXMatrixLookAtLH(&mat_view, &eye, &at, &up);
    pd3dDevice->SetTransform(D3DTS_VIEW, &mat_view);

    // set projection matrix
    D3DXMATRIX mat_proj;
    float aspect = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
    D3DXMatrixPerspectiveFovLH(&mat_proj, D3DX_PI/4, aspect, 1.0f, 100.0f);
    pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat_proj);

    // setup material

    D3DMATERIAL9 material;
    ZeroMemory(&material, sizeof(D3DMATERIAL9));

    material.Diffuse.r = 0.5f;
    material.Diffuse.g = 0.5f;
    material.Diffuse.b = 0.8f;
    material.Diffuse.a = 1.0f;

    material.Ambient.r = 0.5f;
    material.Ambient.g = 0.5f;
    material.Ambient.b = 0.8f;
    material.Ambient.a = 1.0f;

    pd3dDevice->SetMaterial(&material);

    // setup light

    D3DLIGHT9 light;
    ZeroMemory(&light, sizeof(D3DLIGHT9));

    light.Type       = D3DLIGHT_DIRECTIONAL;

    light.Diffuse.r  = 0.1f;
    light.Diffuse.g  = 0.1f;
    light.Diffuse.b  = 0.3f;
    light.Diffuse.a  = 1.0f;

    light.Ambient.r  = 0.1f;
    light.Ambient.g  = 0.1f;
    light.Ambient.b  = 0.3f;
    light.Ambient.a  = 1.0f;

    D3DXVECTOR3 light_dir = D3DXVECTOR3(-1, -1, 1);
    D3DXVec3Normalize((D3DXVECTOR3*) &light.Direction, &light_dir);
    pd3dDevice->SetLight(0, &light);
    pd3dDevice->LightEnable(0, TRUE);
    pd3dDevice->SetRenderState(D3DRS_LIGHTING, TRUE);

    return S_OK;
}

//--------------------------------------------------------------------------------------
// Release resources created in the OnResetDevice callback here
//--------------------------------------------------------------------------------------
void CALLBACK OnLostDevice( void* pUserContext )
{
    g_dlg_resource_manager.OnLostDevice();
    g_settings_dlg.OnLostDevice();
    g_font->OnLostDevice();

    release_com(g_text_sprite);
}

//--------------------------------------------------------------------------------------
// Release resources created in the OnCreateDevice callback here
//--------------------------------------------------------------------------------------
void CALLBACK OnDestroyDevice( void* pUserContext )
{
    g_dlg_resource_manager.OnDestroyDevice();
    g_settings_dlg.OnDestroyDevice();

    release_com(g_font);

    release_com(g_source_mesh);
    release_com(g_target_mesh);
    release_com(g_result_mesh);

    release_com(g_source_vb);
    release_com(g_target_vb);
    release_com(g_result_vb);
}

//--------------------------------------------------------------------------------------
// Handle updates to the scene
//--------------------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext )
{
    sVertex* source_vertices;
    sVertex* target_vertices;
    sVertex* result_vertices;

    g_source_vb->Lock(0, 0, (void**) &source_vertices, 0);
    g_target_vb->Lock(0, 0, (void**) &target_vertices, 0);
    g_result_vb->Lock(0, 0, (void**) &result_vertices, 0);

    float time_factor = (float)(timeGetTime() % 2000) / 1000.0f;
    float scalar      = (time_factor <= 1.0f) ? time_factor : (2.0f - time_factor);

    for(DWORD i = 0; i < g_result_mesh->GetNumVertices(); i++)
    {
        result_vertices[i].x = source_vertices[i].x * (1.0f - scalar) + target_vertices[i].x * scalar;
        result_vertices[i].y = source_vertices[i].y * (1.0f - scalar) + target_vertices[i].y * scalar;
        result_vertices[i].z = source_vertices[i].z * (1.0f - scalar) + target_vertices[i].z * scalar;

        result_vertices[i].nx = source_vertices[i].nx * (1.0f - scalar) + target_vertices[i].nx * scalar;
        result_vertices[i].ny = source_vertices[i].ny * (1.0f - scalar) + target_vertices[i].ny * scalar;
        result_vertices[i].nz = source_vertices[i].nz * (1.0f - scalar) + target_vertices[i].nz * scalar;
    }

    g_source_vb->Unlock();
    g_target_vb->Unlock();
    g_result_vb->Unlock();

    // move dolphin around circle

    float kick_freq = float(2.0f * fTime);
    float phase        = float(fTime) / 3.0f;

    D3DXMATRIX mat_dolphin, mat_trans, mat_rot_y, mat_rot_z;

    D3DXMatrixScaling(&mat_dolphin, 0.01f, 0.01f, 0.01f);
    D3DXMatrixRotationZ(&mat_rot_z, -cosf(kick_freq) / 6);
    D3DXMatrixRotationY(&mat_rot_y, phase);
    D3DXMatrixTranslation(&mat_trans, -5 * sinf(phase), sinf(kick_freq)/2, 10 - 10 * cosf(phase));

    mat_dolphin = mat_dolphin * mat_rot_z * mat_rot_y * mat_trans;;

    pd3dDevice->SetTransform(D3DTS_WORLD, &mat_dolphin);
}

//--------------------------------------------------------------------------------------
// Render the helper information
//--------------------------------------------------------------------------------------
void RenderText()
{
    CDXUTTextHelper text_helper(g_font, g_text_sprite, 20);

    text_helper.Begin();

    // show frame and device states
    text_helper.SetInsertionPos(5, 5);
    text_helper.SetForegroundColor( D3DXCOLOR(1.0f, 0.475f, 0.0f, 1.0f) );
    text_helper.DrawTextLine( DXUTGetFrameStats(true) );
    text_helper.DrawTextLine( DXUTGetDeviceStats() );

    // show helper information

    const D3DSURFACE_DESC* surface_desc = DXUTGetBackBufferSurfaceDesc();

    if(g_show_help)
    {
        text_helper.SetInsertionPos(10, surface_desc->Height - 15 * 6);
        text_helper.SetForegroundColor( D3DXCOLOR(1.0f, 0.475f, 0.0f, 1.0f) );
        text_helper.DrawTextLine(L"Controls (F1 to hide):");

        text_helper.SetInsertionPos(40, surface_desc->Height - 15 * 4);
        text_helper.DrawTextLine(L"Quit: ESC");
    }
    else
    {
        text_helper.SetInsertionPos(10, surface_desc->Height - 15 * 4);
        text_helper.SetForegroundColor( D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f) );
        text_helper.DrawTextLine(L"Press F1 for help");
    }

    text_helper.End();
}

//--------------------------------------------------------------------------------------
// Render the scene
//--------------------------------------------------------------------------------------
void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext )
{
    HRESULT hr;

    if(g_settings_dlg.IsActive())
    {
        g_settings_dlg.OnRender(fElapsedTime);
        return;
    }

    // Clear the render target and the zbuffer
    V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(0, 32, 64, 128), 1.0f, 0) );

    // Render the scene
    if( SUCCEEDED( pd3dDevice->BeginScene() ) )
    {
        for(DWORD i = 0; i < g_num_materials; i++)
            g_result_mesh->DrawSubset(i);

        RenderText();
        V(g_button_dlg.OnRender(fElapsedTime));

        V( pd3dDevice->EndScene() );
    }
}

//--------------------------------------------------------------------------------------
// Handle messages to the application
//--------------------------------------------------------------------------------------
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
                          bool* pbNoFurtherProcessing, void* pUserContext )
{
    *pbNoFurtherProcessing = g_dlg_resource_manager.MsgProc(hWnd, uMsg, wParam, lParam);
    if(*pbNoFurtherProcessing)
        return 0;

    if(g_settings_dlg.IsActive())
    {
        g_settings_dlg.MsgProc(hWnd, uMsg, wParam, lParam);
        return 0;
    }

    *pbNoFurtherProcessing = g_button_dlg.MsgProc(hWnd, uMsg, wParam, lParam);
    if(*pbNoFurtherProcessing)
        return 0;

    return 0;
}

//--------------------------------------------------------------------------------------
// Handle keybaord event
//--------------------------------------------------------------------------------------
void CALLBACK OnKeyboardProc(UINT charater, bool is_key_down, bool is_alt_down, void* user_context)
{
    if(is_key_down)
    {
        switch(charater)
        {
        case VK_F1:
            g_show_help = !g_show_help;
            break;
        }
    }
}

//--------------------------------------------------------------------------------------
// Handle events for controls
//--------------------------------------------------------------------------------------
void CALLBACK OnGUIEvent(UINT event, int control_id, CDXUTControl* control, void* user_context)
{
    switch(control_id)
    {
    case IDC_TOGGLE_FULLSCREEN:
        DXUTToggleFullScreen();
        break;

    case IDC_TOGGLE_REF:
        DXUTToggleREF();
        break;

    case IDC_CHANGE_DEVICE:
        g_settings_dlg.SetActive(true);
        break;
    }
}

//--------------------------------------------------------------------------------------
// Initialize dialogs
//--------------------------------------------------------------------------------------
void InitDialogs()
{
    g_settings_dlg.Init(&g_dlg_resource_manager);
    g_button_dlg.Init(&g_dlg_resource_manager);

    g_button_dlg.SetCallback(OnGUIEvent);

    int x = 35, y = 10, width = 125, height = 22;

    g_button_dlg.AddButton(IDC_TOGGLE_FULLSCREEN, L"Toggle full screen", x, y,         width, height);
    g_button_dlg.AddButton(IDC_TOGGLE_REF,          L"Toggle REF (F3)",     x, y += 24, width, height);
    g_button_dlg.AddButton(IDC_CHANGE_DEVICE,      L"Change device (F2)", x, y += 24, width, height, VK_F2);
}

//--------------------------------------------------------------------------------------
// Initialize everything and go into a render loop
//--------------------------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR, int )
{
    // Enable run-time memory check for debug builds.
#if defined(DEBUG) | defined(_DEBUG)
    _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif

    // Set the callback functions
    DXUTSetCallbackDeviceCreated( OnCreateDevice );
    DXUTSetCallbackDeviceReset( OnResetDevice );
    DXUTSetCallbackDeviceLost( OnLostDevice );
    DXUTSetCallbackDeviceDestroyed( OnDestroyDevice );
    DXUTSetCallbackMsgProc( MsgProc );
    DXUTSetCallbackFrameRender( OnFrameRender );
    DXUTSetCallbackFrameMove( OnFrameMove );
    DXUTSetCallbackKeyboard(OnKeyboardProc);

    // TODO: Perform any application-level initialization here
    InitDialogs();

    // Initialize DXUT and create the desired Win32 window and Direct3D device for the application
    DXUTInit( true, true, true ); // Parse the command line, handle the default hotkeys, and show msgboxes
    DXUTSetCursorSettings( true, true ); // Show the cursor and clip it when in full screen
    DXUTCreateWindow( L"Tweening" );
    DXUTCreateDevice( D3DADAPTER_DEFAULT, true, 640, 480, IsDeviceAcceptable, ModifyDeviceSettings );

    // Start the render loop
    DXUTMainLoop();

    // TODO: Perform any application-level cleanup here

    return DXUTGetExitCode();
}

下載示例工程

posted on 2008-05-28 12:09 lovedday 閱讀(1463) 評(píng)論(0) 編輯收藏引用

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