颜色立方体演示程序.docxVIP

6.9颜色立方体演示程序我们已经讲解了足够多的内容，现在我们可以开始编写一个简单的颜色立方体演示程序了。这个例子基本上包含了我们前面讲到的所有内容。读者应该对照前面的几节，仔细研究这些代码，直到把每一行代码都弄懂为止。注意，程序使用了6.8.1节编写的“color.fx”effect。//***************************************************************************************// BoxDemo.cpp by Frank Luna (C) 2011 All Rights Reserved.//// Demonstrates rendering a colored box.//// Controls://Hold the left mouse button down and move the mouse to rotate.// Hold the right mouse button down to zoom in and out.////***************************************************************************************#include"d3dApp.h"#include"d3dx11Effect.h"#include"MathHelper.h"structVertex{XMFLOAT3 Pos;XMFLOAT4 Color;};classBoxApp : publicD3DApp{public:BoxApp(HINSTANCE hInstance);~BoxApp();bool Init();void OnResize();void UpdateScene(float dt);void DrawScene(); void OnMouseDown(WPARAM btnState, int x, int y);void OnMouseUp(WPARAM btnState, int x, int y);void OnMouseMove(WPARAM btnState, int x, int y);private:void BuildGeometryBuffers();void BuildFX();void BuildVertexLayout();private:ID3D11Buffer* mBoxVB;ID3D11Buffer* mBoxIB;ID3DX11Effect* mFX;ID3DX11EffectTechnique* mTech;ID3DX11EffectMatrixVariable* mfxWorldViewProj;ID3D11InputLayout* mInputLayout;XMFLOAT4X4 mWorld;XMFLOAT4X4 mView;XMFLOAT4X4 mProj;float mTheta;float mPhi;float mRadius;POINT mLastMousePos;};intWINAPI WinMain(HINSTANCEhInstance, HINSTANCEprevInstance,PSTRcmdLine, intshowCmd){// Enable run-time memory check for debug builds.#ifdefined(DEBUG) | defined(_DEBUG)_CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );#endifBoxApp theApp(hInstance);if( !theApp.Init() )return 0;return theApp.Run();}BoxApp::BoxApp(HINSTANCEhInstance): D3DApp(hInstance), mBoxVB(0), mBoxIB(0), mFX(0), mTech(0), mfxWorldViewProj(0), mInputLayout(0), mTheta(1.5f*MathHelper::Pi), mPhi(0.25f*MathHelper::Pi), mRadius(5.0f){mMainWndCaption = L"Box Demo";mLastMousePos.x = 0;mLastMousePos.y = 0;XMMATRIX I = XMMatrixIdentity();XMStoreFloat4x4(&mWorld, I);XMStoreFloat4x4(&mView, I);XMSt