windows游戏编程大师技巧源码C++改写DX9改写

额。暂时只是提供了基本表面画线实现其他以后补上。

写完以后顺便改写3D游戏编程大师技巧。

DirectDraw7太老了。

在wind8和wind7老是出现莫名的错误，而且不好调试。

用DX9分装了，就只用了IDirect3DSurface9接口。 

额没有用流水管线。

以后用软件算法实现

纹理其他什么的暂时不想用。只想用软件模拟算法。所以至于速度什么的，你懂的。

献丑了。源码呈上

IDE：VS2012 EXPRESS

/*作者：钱启新版本：0000 0001//以便于以后更新方便增加了什么只是很简单很简单的封装以后慢慢改写完美化。*/#ifndef __T3DLIB2_HEADFILE_H__#define __T3DLIB2_HEADFILE_H__#include"T3DlibCommon.h"#include <Windows.h>#include <d3d9.h>#include <vector>#pragma comment( lib, "d3d9.lib" )#pragma comment( lib, "winmm.lib" )LRESULT WINAPI WndProc( HWND hwnd, UINT nMsg, WPARAM wParam, LPARAM lParam );struct cVertex2D{float x;float y;};//Desc:多边形描述struct cPolygon2D{int state;//绘制状态1 = 绘制， 2 = 不绘制int num_vertes;//顶点数量int posX, posY;//绘制坐标int xv, yv;//移动速度DWORD color;//顶点颜色cVertex2D* vlist;//顶点列表public:void Translate( int dx, int dy );void Rotate( float angle );void Scale( float sx, float sy );};class ScreenSys_Win32;class VisualSys_D3D9;class SetllaEngine;//Desc:win32封装class ScreenSys_Win32{friend class VisualSys_D3D9;public:ScreenSys_Win32();virtual ~ScreenSys_Win32();HRESULT ScreenSys_InitWin32( HINSTANCE _hInstance, DWORD _width, DWORD _height );HRESULT ScreenSys_UnInitWin32( );/*Desc:消息循环函数void(*BackCallFunc)()= "你想要循环的函数"*/HRESULT ScreenSys_ProcessWin32( void(*BackCallFunc)() );private:HWNDm_win32HWND;HINSTANCEm_win32HINSTANCE;DWORDm_win32HEIGHT;DWORDm_win32WIDTH;DWORDm_win32WINDOWSTYLE;T3DStringm_strCaptionName;T3DString   m_strClassName;};//Desc:DX9简单封装//没有加入渲染流水管线//为了方便以后软件算法模拟渲染流水管线class VisualSys_D3D9{public:VisualSys_D3D9( ScreenSys_Win32* _pScreenSysObject );virtual ~VisualSys_D3D9();HRESULT VisualSys_InitD3D9( DWORD _iswindowed );HRESULT VisualSys_UnInitD3D9();HRESULTVisualSys_BeginDrawingBoardD3D9();HRESULT VisualSys_EndDrawingBoardD3D9();/*Desc:直接将像素绘制到m_pD3D9DrawingBorad中Node:必须在VisualSys_BeginDrawingBoardD3D9()和VisualSys_EndDrawingBoardD3D9()之间进行绘制SAMPLE:pOBJECT->VisualSys_BeginDrawingBoardD3D9();pOBJECT->VisualSys_DrawPixelToDB( 1, 2, 0 )pOBJECT->VisualSys_EndDrawingBoardD3D9();*/HRESULT VisualSys_DrawPixelToDB( int _x, int _y, DWORD _color );private:IDirect3D9*m_pD3D9;IDirect3DDevice9*m_pD3D9Device;IDirect3DSurface9*m_pD3D9SurfaceBack;IDirect3DSurface9*m_pD3D9DrawingBorad;ScreenSys_Win32*m_pScreenSysWin32_Object;DWORDm_win32IsWindowed;//Desc:描述m_pD3D9DrawingBorad//获得间距(lPitch)和像素位D3DLOCKED_RECTm_D3D9rc;//Desc: m_win32BeginDrawBD = true;接受像素写入m_pD3D9DrawingBorad中//m_win32BeginDrawBD = false;拒接像素写入m_pD3D9DrawingBorad中DWORDm_win32BeginDrawBD;//Desc:当前表面的像素未格式//可传递32 24 16 8DWORDm_win32BBP;};//Desc:软件模拟2D图形算法//只需要获取线性显存地址//所有软件模拟算法都封装在此地class VisualSys_Soft2D{public:VisualSys_Soft2D( VisualSys_D3D9* _pObject );~VisualSys_Soft2D();void VisualSys_DrawLine( int x1, int y1, int x2, int y2, DWORD color );void VisualSys_ClipLine( int& x1, int& y1, int& x2, int& y2 );//Node:进行裁剪并且绘制void VisualSys_DrawLineEx( int x1, int y1, int x2, int y2, DWORD color );//Node:绘制一个多边形//x1,y1 = 绘制坐标void VisualSys_DrawPolygon2D( const cPolygon2D* _pPolygon );//Node:设置最小和最大裁剪范围//最大值不超过窗口最大坐标//最小值不超过窗口最小坐标void VisualSys_SetClipRect( int min_x, int min_y, int max_x, int max_y );void VisualSys_SetClipRect( RECT* _pRect );private:VisualSys_D3D9*m_pVisualD3D9SysObject;//Node:每次改变窗口大小的时候应该要及时更新//Desc:裁剪坐标限定int m_ClipMinx;int m_ClipMiny;int m_ClipMaxx;int m_ClipMaxy;};//Desc:所有的类的全部实现调用都由该类调用class SetllaEngine{public:SetllaEngine();~SetllaEngine();HRESULT Setlla_Init( HINSTANCE _hInstance, DWORD _width, DWORD _height, DWORD _iswindowed );HRESULT Setlla_UnInit();HRESULT Setlla_Process( void(*_pFunction)() );HRESULT Setlla_BeginRender();HRESULT Setlla_EndRender();HRESULT Setlla_DrawPixel( int _x, int _y, DWORD _color );HRESULT Setlla_DrawLine( int x1, int y1, int x2, int y2, DWORD color );HRESULT Setlla_DrawLineEx( int x1, int y1, int x2, int y2, DWORD color );HRESULT Setlla_DrawPolygon2D( const cPolygon2D* _pPolygon );private:ScreenSys_Win32*m_pScreenSysObject;VisualSys_D3D9*m_pVisualSysObject;VisualSys_Soft2D*m_pVisualSysSotfObject;};#endif

#include "T3Dlib2.h"LRESULT WINAPI WndProc( HWND hwnd, UINT nMsg, WPARAM wParam, LPARAM lParam ){switch(nMsg){case WM_DESTROY:PostQuitMessage(0);break;default:break;}return DefWindowProc( hwnd, nMsg, wParam, lParam );}/*----------------------------------------------------------------------------------------------------------------*//*------------------------------------------------------ScreenSys_Win32 class-------------------------------------*//*----------------------------------------------------------------------------------------------------------------*/ScreenSys_Win32::ScreenSys_Win32(){m_win32HEIGHT = 600;m_win32WIDTH  = 800;m_win32WINDOWSTYLE = WS_OVERLAPPEDWINDOW;m_strCaptionName   = __TEXT( "T3Dlib" );//调用赋值操作符，非构造函数。可以使用初始化列表调用构造函数m_strClassName     = __TEXT( "T3Dlib" );//同上}ScreenSys_Win32::~ScreenSys_Win32(){ScreenSys_UnInitWin32();}HRESULT ScreenSys_Win32::ScreenSys_InitWin32( HINSTANCE _hInstance, DWORD _width, DWORD _height ){m_win32HINSTANCE = _hInstance;m_win32HEIGHT = _height;m_win32WIDTH  = _width;//Node:填充窗口描述WNDCLASSEX wc;ZeroMemory( &wc, sizeof(wc) );wc.cbSize = sizeof(wc);wc.cbClsExtra = 0;wc.cbWndExtra = 0;wc.style = CS_HREDRAW | CS_VREDRAW;wc.hbrBackground = (HBRUSH)GetStockObject( WHITE_BRUSH );wc.hCursor= LoadCursor( NULL, IDC_ARROW );wc.hIcon= LoadIcon( NULL, IDI_APPLICATION );wc.hIconSm= LoadIcon( NULL, IDI_APPLICATION );wc.hInstance= m_win32HINSTANCE;wc.lpfnWndProc = ::WndProc;wc.lpszClassName = m_strClassName.c_str();wc.lpszMenuName  = NULL;//Node:注册窗口if( !RegisterClassEx( &wc ) ){CTHROW( "ScreenSys_InitWIN32 RegisterClassEx ERROR" );return E_FAIL;}//Node:创建窗口m_win32HWND = CreateWindowEx( NULL, m_strClassName.c_str(), m_strCaptionName.c_str(), WS_OVERLAPPEDWINDOW, 0, 0, _width, _height, NULL, NULL, m_win32HINSTANCE, NULL );if( NULL == m_win32HWND ){CTHROW( "ScreenSys_InitWIN32 CreateWindowEx ERROR" );return E_FAIL;}UpdateWindow( m_win32HWND );ShowWindow( m_win32HWND, SW_SHOW );return S_OK;}HRESULT ScreenSys_Win32::ScreenSys_UnInitWin32( ){return S_OK;}LRESULT ScreenSys_Win32::ScreenSys_ProcessWin32( void (*BackCallFunc)() ){static DWORD LastTime = timeGetTime();MSG msg;ZeroMemory( &msg, sizeof(msg) );while( WM_QUIT != msg.message ){if( PeekMessage( &msg, NULL, NULL, NULL, PM_REMOVE ) ){DispatchMessage( &msg );TranslateMessage( &msg );}else{DWORD CurrentTime = timeGetTime();DWORD deltaTime = LastTime - CurrentTime;BackCallFunc();LastTime = CurrentTime;}}return msg.wParam;}/*----------------------------------------------------------------------------------------------------------------*//*------------------------------------------------------ScreenSys_Win32 class-------------------------------------*//*----------------------------------------------------------------------------------------------------------------*/VisualSys_D3D9::VisualSys_D3D9( ScreenSys_Win32* _pScreenSysObject ){m_pD3D9= NULL;m_pD3D9Device = NULL;m_pD3D9SurfaceBack   = NULL;m_pD3D9DrawingBorad  = NULL;m_pScreenSysWin32_Object = _pScreenSysObject;//m_VertexStream.reserve(1024);//m_VertexStream.clear();m_win32IsWindowed = true;m_win32BeginDrawBD = 0;}VisualSys_D3D9::~VisualSys_D3D9(){VisualSys_UnInitD3D9();}HRESULT VisualSys_D3D9::VisualSys_InitD3D9( DWORD _iswindowed ){m_win32IsWindowed = _iswindowed;HRESULT hr;//HWND hwnd = _hwnd;//DWORD width = _width;//DWORD height= _height;//Node:创建IDirect3D9对象if( NULL == (m_pD3D9 = Direct3DCreate9( D3D_SDK_VERSION ) ) ){CTHROW( "VisualSys_InitD3D9, Direct3DCreate9 ERROR" );return E_FAIL;}//Node:获取当前显示模式D3DDISPLAYMODE mode;ZeroMemory( &mode, sizeof(mode) );if( FAILED( hr = m_pD3D9->GetAdapterDisplayMode( D3DADAPTER_DEFAULT, &mode ))){CTHROW( "VisualSys_InitD3D9, GetAdapterDisplayMode ERROR" );return hr;}if( NULL == m_pScreenSysWin32_Object ){CTHROW( "VisualSys_InitD3D9, m_pScreenSysWin32_Object ERROR" );return hr;}//Node: 填写显卡适配器设备信息//以及创建Direct3DDevice9设备D3DPRESENT_PARAMETERS d3dpp;ZeroMemory( &d3dpp, sizeof(d3dpp) );d3dpp.BackBufferWidth  = m_pScreenSysWin32_Object->m_win32WIDTH; d3dpp.BackBufferHeight = m_pScreenSysWin32_Object->m_win32HEIGHT;d3dpp.BackBufferFormat = mode.Format;d3dpp.BackBufferCount  = 1;d3dpp.Windowed   = 1;d3dpp.hDeviceWindow   = m_pScreenSysWin32_Object->m_win32HWND;d3dpp.EnableAutoDepthStencil = FALSE;d3dpp.AutoDepthStencilFormat = D3DFMT_UNKNOWN;d3dpp.MultiSampleType= D3DMULTISAMPLE_NONE;d3dpp.MultiSampleQuality= 0;d3dpp.Flags = 0;d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;//关闭垂直同步d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;//着个表示表明让Direct3D选择最佳的前后台缓存交换模式if( FAILED( m_pD3D9->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,m_pScreenSysWin32_Object->m_win32HWND, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &m_pD3D9Device  ) ) ){CTHROW( "VisualSys_InitD3D9, CreateDevice ERROR" );return hr;}//Note:清理后背表面的颜色if( NULL == m_pD3D9Device ){CTHROW( "VisualSys_InitD3D9, g_pD3DDevice9 ERROR" );return E_FAIL;}if( FAILED( hr = m_pD3D9Device->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB( 0,0,0 ), 1.0f, 0 ) )){CTHROW( "VisualSys_InitD3D9, Clear ERROR" );return hr;}//Note:获得后背缓存if( FAILED( hr = m_pD3D9Device->GetBackBuffer( 0, 0, D3DBACKBUFFER_TYPE_MONO, &m_pD3D9SurfaceBack ) ) ){CTHROW( "VisualSys_InitD3D9, GetBackBuffer ERROR" );return hr;}//Note: 创建画板drawing boardif( FAILED(  m_pD3D9Device->CreateOffscreenPlainSurface( m_pScreenSysWin32_Object->m_win32WIDTH, m_pScreenSysWin32_Object->m_win32HEIGHT,mode.Format, D3DPOOL_DEFAULT, &m_pD3D9DrawingBorad, NULL ) ) ){CTHROW( "VisualSys_InitD3D9, CreateOffscreenPlainSurface ERROR" );return hr;}//Note:释放IDirect3D接口if(FAILED( hr = m_pD3D9->Release() )){CTHROW( "VisualSys_InitD3D9, Release ERROR" );return hr;}return S_OK;}HRESULT VisualSys_D3D9::VisualSys_UnInitD3D9(){if( m_pD3D9DrawingBorad ){m_pD3D9DrawingBorad->Release();m_pD3D9DrawingBorad = NULL;}if( m_pD3D9SurfaceBack ){m_pD3D9SurfaceBack->Release();m_pD3D9SurfaceBack = NULL;}if( m_pD3D9Device ){m_pD3D9Device->Release();m_pD3D9Device = NULL;}return S_OK;}HRESULT VisualSys_D3D9::VisualSys_DrawPixelToDB( int _x, int _y, DWORD _color ){if( 0 == m_win32BeginDrawBD ){return E_FAIL;}//Node: Pitch表示一个表面上一行像素的长度 int linePixel = 0;WORD*pBits16 = NULL;DWORD*pBits32 = NULL;//等下再修改这个switch( 32 ){case 16:linePixel = m_D3D9rc.Pitch / sizeof(WORD);pBits16 = (WORD*)m_D3D9rc.pBits;//Note: 填充像素pBits16[_y*linePixel +_x] = (WORD)_color;break;case 32:linePixel = m_D3D9rc.Pitch / sizeof(DWORD);pBits32 = (DWORD*)m_D3D9rc.pBits;pBits32[_y*linePixel +_x] = _color;break;default:break;}    return S_OK;}HRESULTVisualSys_D3D9::VisualSys_BeginDrawingBoardD3D9(){HRESULT hr;//Node:将定点数据流填入画板if( NULL == m_pD3D9Device ){return E_FAIL;}//if( FAILED( hr = m_pD3D9Device->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB( 0,0,0 ), 1.0f, 0 ) )){CTHROW( "VisualSys_InitD3D9, Clear ERROR" );return hr;}if( 0 == m_win32BeginDrawBD ){ZeroMemory(&m_D3D9rc,sizeof(m_D3D9rc)); if( FAILED( hr = m_pD3D9DrawingBorad->LockRect( &m_D3D9rc, NULL, D3DLOCK_DISCARD ) ) ){ CTHROW( "VisualSys_BeginDrawingBoard LockRect ERROR" );return hr;}}m_win32BeginDrawBD = 1;return S_OK;}HRESULT VisualSys_D3D9::VisualSys_EndDrawingBoardD3D9(){HRESULT hr;//Node: 解锁表面if( 1 == m_win32BeginDrawBD ){if( FAILED( hr = m_pD3D9DrawingBorad->UnlockRect() ) ){ CTHROW( "VisualSys_BeginDrawingBoard UnlockRect ERROR" );return hr;}}if( FAILED( hr = m_pD3D9Device->StretchRect( m_pD3D9DrawingBorad, 0, m_pD3D9SurfaceBack, 0, D3DTEXF_NONE ) ) ){CTHROW( "VisualSys_EndDrawingBoard StretchRect ERROR" );return hr;}//执行切换if( FAILED( hr = m_pD3D9Device->Present(0, 0, 0, 0) ) ){CTHROW( "VisualSys_EndDrawingBoard Present ERROR" );return hr;}//清除画板内容if( FAILED( hr = m_pD3D9Device->ColorFill( m_pD3D9DrawingBorad, NULL, D3DCOLOR_ARGB( 0, 0, 0, 0 ) ) ) ){CTHROW( "VisualSys_EndDrawingBoard ColorFill ERROR" );return hr;}m_win32BeginDrawBD = 0;return S_OK;}/*----------------------------------------------------------------------------------------------------------------*//*------------------------------------------------------VisualSys_Soft2D class------------------------------------*//*----------------------------------------------------------------------------------------------------------------*/VisualSys_Soft2D::VisualSys_Soft2D( VisualSys_D3D9* _pObject ){m_pVisualD3D9SysObject = _pObject;}VisualSys_Soft2D::~VisualSys_Soft2D(){delete m_pVisualD3D9SysObject;m_pVisualD3D9SysObject = NULL;}void VisualSys_Soft2D::VisualSys_DrawLine( int x1, int y1, int x2, int y2, DWORD color ){//Node:开始绘制起点int beginPosX = x1;int beginPosY = y1;//Node: 增加判断值int error = 0;//Node:距离int dx = x2 - x1;int dy = y2 - y1;//Node:增长方式int x_inc = 0;int y_inc = 0;if( dx > 0 ){//Node:正方向增长x_inc = 1;}else{//Node:负方向增长x_inc = -1;dx = -dx;//取得绝对值}if( dy > 0 ){y_inc = 1;}else{y_inc = -1;dy = -dy;}//误差减小int dx2 = dx * 2;int dy2 = dy * 2;if( dx > dy ){//Node:小于45度斜角error = dy2 - dx;for( int index = 0; index < dx; ++index  ){//Node:开始增加if( error >= 0 ){//Node:error重置掉error -= dx;beginPosY+=y_inc;}//Node:error += dy;beginPosX+=x_inc;m_pVisualD3D9SysObject->VisualSys_DrawPixelToDB( beginPosX, beginPosY, color );}}else{//Node: 大于45度斜角error = dx2 - dy;for( int index = 0; index < dy; ++index  ){//Node:开始增加if( error >= 0 ){//Node:error重置掉error -= dy;beginPosX+=x_inc;}//Node:error += dx;beginPosY+=y_inc;m_pVisualD3D9SysObject->VisualSys_DrawPixelToDB( beginPosX, beginPosY, color );}}}void VisualSys_Soft2D::VisualSys_DrawLineEx( int x1, int y1, int x2, int y2, DWORD color ){int _x1 = x1;int _y1 = y1;int _x2 = x2;int _y2 = y2;VisualSys_ClipLine( _x1, _y1, _x2, _y2 );VisualSys_DrawLine( _x1, _y1, _x2, _y2, color );}void VisualSys_Soft2D::VisualSys_ClipLine( int& x1, int& y1, int& x2, int& y2 ){//Node:裁剪标记static const unsigned int CLIP_CODE_C = 0x00000000;//不需要裁剪static const unsigned int CLIP_CODE_N = 0x00000008;//裁剪最小y值上北static const unsigned int CLIP_CODE_S = 0x00000004;//裁剪最大y值下南static const unsigned int CLIP_CODE_W = 0x00000001;//裁剪最小x值左西static const unsigned int CLIP_CODE_E = 0x00000002;//裁剪最大x值右东static const unsigned int CLIP_CODE_NE = 0x0000000A;//裁剪最小y值，最大x值东北 0x0000000A = 0x00000008(北) + 0x00000002(东);static const unsigned int CLIP_CODE_SE = 0x00000006;//裁剪最大x值，最大y值东南 0x00000006 = 0x00000004(南) + 0x00000002(东);static const unsigned int CLIP_CODE_SW = 0x00000005;//裁剪最小x值，最大y值西南 0x00000005 = 0x00000004(南) + 0x00000001(西);static const unsigned int CLIP_CODE_NW = 0x00000009;//裁剪最小x值，最小y值西北 0x00000009 = 0x00000008(北) + 0x00000001(西);int xc1  = x1;int yc1 = y1;int xc2  = x2;int yc2  = y2;unsigned int p1_code = 0;//裁剪标记1用于坐标1 (x1,y1)unsigned int p2_code = 0;//裁剪标记2用于坐标2 (x2,y2)//裁剪y1if( y1 < m_ClipMiny )p1_code |= CLIP_CODE_N;else if( y1 > m_ClipMaxy )p1_code |= CLIP_CODE_S;//裁剪x1if( x1 < m_ClipMinx )p1_code |= CLIP_CODE_W;else if( x1 > m_ClipMaxx )p1_code |= CLIP_CODE_E;//裁剪y2if( y2 < m_ClipMiny )p2_code |= CLIP_CODE_N;else if( y2 > m_ClipMaxy )p2_code |= CLIP_CODE_S;//裁剪x2if( x2 < m_ClipMinx )p2_code |= CLIP_CODE_W;else if( x2 > m_ClipMaxx )p2_code |= CLIP_CODE_E;//Node:不需要裁剪没有超出裁剪范围if( CLIP_CODE_C == p1_code && CLIP_CODE_C == p2_code )return;//Node:裁剪使用的是直线两点式公式//(( y - y1 ) / ( x - x1 )) = (( y2 - y1 ) / ( x2 - x1 ))//Node:需要裁剪坐标1 (x1,y1)switch( p1_code ){case CLIP_CODE_C://无需裁剪break;case CLIP_CODE_N://Node:获得最小y值后，求x值yc1 = m_ClipMiny;//(xc1 - x1) / ( m_ClipMiny - y1 ) = ( x2 - x1 ) / ( y2 - y1 );xc1 = (x2 - x1)/(y2 - y1) * ( m_ClipMiny - y1 ) + x1 + 0.5;//+0.5减少精度的缺失break;case CLIP_CODE_S://Node:获得最大y值后，求x值yc1 = m_ClipMaxy;//(xc1 - x1) / ( m_ClipMaxy - y1 ) = ( x2 - x1 ) / ( y2 - y1 );xc1 = (x2 - x1)/(y2 - y1) * ( m_ClipMaxy - y1 ) + x1 + 0.5;break;case CLIP_CODE_W://Node:获得最小x值后，求y值xc1 = m_ClipMinx;//( yc1 - y1 )/( m_ClipMinx - x1 ) = ( y2 - y1 ) / ( x2 - x1 );yc1 = ( y2 - y1 ) / ( x2 - x1 ) * ( m_ClipMinx - x1 ) + y1 + 0.5;break;case CLIP_CODE_E://Node:获得最大x值后，求y值xc1 = m_ClipMaxx;//( yc1 - y1 )/( m_ClipMinx - x1 ) = ( y2 - y1 ) / ( x2 - x1 );yc1 = ( y2 - y1 ) / ( x2 - x1 ) * ( m_ClipMaxx - x1 ) + y1 + 0.5;break;case CLIP_CODE_NE:yc1 = m_ClipMiny;xc1 = (x2 - x1)/(y2 - y1) * ( m_ClipMiny - y1 ) + x1 + 0.5;if( xc1 < m_ClipMinx || xc1 > m_ClipMaxx ){xc1 = m_ClipMaxx;yc1 = ( y2 - y1 ) / ( x2 - x1 ) * ( m_ClipMaxx - x1 ) + y1 + 0.5;}break;case CLIP_CODE_SE:yc1 = m_ClipMaxy;xc1 = (x2 - x1)/(y2 - y1) * ( m_ClipMaxy - y1 ) + x1 + 0.5;if( xc1 < m_ClipMinx || xc1 > m_ClipMaxx ){xc1 = m_ClipMaxx;yc1 = ( y2 - y1 ) / ( x2 - x1 ) * ( m_ClipMaxx - x1 ) + y1 + 0.5;}break;case CLIP_CODE_SW:yc1 = m_ClipMaxy;xc1 = (x2 - x1)/(y2 - y1) * ( m_ClipMaxy - y1 ) + x1 + 0.5;if( xc1 < m_ClipMinx || xc2 > m_ClipMaxx ){xc1 = m_ClipMinx;yc1 = ( y2 - y1 ) / ( x2 - x1 ) * ( m_ClipMinx - x1 ) + y1 + 0.5;}break;case CLIP_CODE_NW:yc1 = m_ClipMiny;xc1 = (x2 - x1)/(y2 - y1) * ( m_ClipMiny - y1 ) + x1 + 0.5;if( xc1 < m_ClipMinx || xc1 > m_ClipMaxx ){xc1 = m_ClipMinx;yc1 = ( y2 - y1 ) / ( x2 - x1 ) * ( m_ClipMinx - x1 ) + y1 + 0.5;}break;}switch(p2_code){case CLIP_CODE_C: break;case CLIP_CODE_N:yc2 = m_ClipMiny;xc2 = x2 + (m_ClipMiny-y2)*(x1-x2)/(y1-y2);break;case CLIP_CODE_S:yc2 = m_ClipMaxy;xc2 = x2 + (m_ClipMaxy-y2)*(x1-x2)/(y1-y2);break;case CLIP_CODE_W:xc2 = m_ClipMinx;yc2 = y2 + (m_ClipMinx-x2)*(y1-y2)/(x1-x2);break;case CLIP_CODE_E:xc2 = m_ClipMaxx;yc2 = y2 + (m_ClipMaxx-x2)*(y1-y2)/(x1-x2);break;case CLIP_CODE_NE:yc2 = m_ClipMiny;xc2 = x2 + 0.5+(m_ClipMiny-y2)*(x1-x2)/(y1-y2);if (xc2 < m_ClipMinx || xc2 > m_ClipMaxx){xc2 = m_ClipMaxx;yc2 = y2 + 0.5+(m_ClipMaxx-x2)*(y1-y2)/(x1-x2);}break;  case CLIP_CODE_SE:yc2 = m_ClipMaxy;xc2 = x2 + 0.5+(m_ClipMaxy-y2)*(x1-x2)/(y1-y2);if (xc2 < m_ClipMinx || xc2 > m_ClipMaxx){xc2 = m_ClipMaxx;yc2 = y2 + 0.5+(m_ClipMaxx-x2)*(y1-y2)/(x1-x2);}break;case CLIP_CODE_NW: yc2 = m_ClipMiny;xc2 = x2 + 0.5+(m_ClipMiny-y2)*(x1-x2)/(y1-y2);if (xc2 < m_ClipMinx || xc2 > m_ClipMaxx){xc2 = m_ClipMinx;    yc2 = y2 + 0.5+(m_ClipMinx-x2)*(y1-y2)/(x1-x2);} break;case CLIP_CODE_SW:yc2 = m_ClipMaxy;xc2 = x2 + 0.5+(m_ClipMaxy-y2)*(x1-x2)/(y1-y2);if (xc2 < m_ClipMinx || xc2 > m_ClipMaxx){xc2 = m_ClipMinx;    yc2 = y2 + 0.5+(m_ClipMinx-x2)*(y1-y2)/(x1-x2);}break;default:  break;}if( (xc1 < m_ClipMinx) || (xc1 > m_ClipMaxx) ||(yc1 < m_ClipMiny) || (yc1 > m_ClipMaxy) ||(xc2 < m_ClipMinx) || (xc2 > m_ClipMaxx) ||(yc2 < m_ClipMiny) || (yc2 > m_ClipMaxy) ){return;} x1 = xc1;y1 = yc1;x2 = xc2;y2 = yc2;}void VisualSys_Soft2D::VisualSys_SetClipRect( int min_x, int min_y, int max_x, int max_y ){m_ClipMinx = min_x;m_ClipMiny = min_y;m_ClipMaxx = max_x;m_ClipMaxy = max_y;}void VisualSys_Soft2D::VisualSys_SetClipRect( RECT* _pRect ){m_ClipMinx = _pRect->left;m_ClipMiny = _pRect->top;m_ClipMaxx = _pRect->right;m_ClipMaxy = _pRect->bottom;}void VisualSys_Soft2D::VisualSys_DrawPolygon2D( const cPolygon2D* _pPolygon ){int index = 0;if( _pPolygon->state ){//Node:进行绘制//Node:绘制从第一个点到最后一个点for( ; index < (_pPolygon->num_vertes - 1); ++index ){VisualSys_DrawLineEx( _pPolygon->vlist[index].x+_pPolygon->posX, _pPolygon->vlist[index].y+_pPolygon->posY,   _pPolygon->vlist[index+1].x+_pPolygon->posX, _pPolygon->vlist[index+1].y+_pPolygon->posY, _pPolygon->color );}//Node:将第一个点和最后一个点连接起来VisualSys_DrawLineEx( _pPolygon->vlist[0].x+_pPolygon->posX, _pPolygon->vlist[0].y+_pPolygon->posY,   _pPolygon->vlist[index].x+_pPolygon->posX, _pPolygon->vlist[index].y+_pPolygon->posY, _pPolygon->color );}else{//Node:不绘制return;}return;}/*----------------------------------------------------------------------------------------------------------------*//*------------------------------------------------------ScreenSys_Win32 class-------------------------------------*//*----------------------------------------------------------------------------------------------------------------*/void cPolygon2D::Translate( int dx, int dy ){posX+=dx; posY+=dy;}void cPolygon2D::Rotate( float angle ){//Node:旋转//Node:利用三角公式-和差化积公式//sin( angle1 + angle2 ) = sin( angle1 )*cos( angle2 ) + cos( angle1 )* sin( angle1 )//sin( angle1 - angle2 ) = sin( angle1 )*cos( angle2 ) - cos( angle1 )* sin( angle1 )//cos( angle1 + angle2 ) = cos( angle1 )*cos( angle2 ) - sin( angle1 )* sin( angle2 )//cos( angle1 - angle2 ) = cos( angle1 )*cos( angle2 ) + sin( angle1 )* sin( angle2 )//化简下//xr = r * cos( angle1 + angle2 ) = "展开略去" = x*cos( angle2 ) + y*sin( angle2 )//yr = r * sin( angle1 + angle2 ) = "展开略去" = x*sin( angle2 ) + y*cos( angle2 )for( int index = 0; index < num_vertes; ++index ){float xr = vlist[index].x*cos(angle) - vlist[index].y*sin(angle);float yr = vlist[index].x*sin(angle) - vlist[index].y*cos(angle);//覆盖旧坐标vlist[index].x = xr;vlist[index].y = yr;}}void cPolygon2D::Scale( float sx, float sy ){for( int index = 0; index < num_vertes; ++index ){vlist[index].x *= sx;vlist[index].y *= sy;}}/*----------------------------------------------------------------------------------------------------------------*//*------------------------------------------------------SetllaEngine class----------------------------------------*//*----------------------------------------------------------------------------------------------------------------*/SetllaEngine::SetllaEngine(){m_pScreenSysObject = new ScreenSys_Win32();m_pVisualSysObject = new VisualSys_D3D9( m_pScreenSysObject );m_pVisualSysSotfObject = new VisualSys_Soft2D( m_pVisualSysObject );}SetllaEngine::~SetllaEngine(){delete m_pScreenSysObject;m_pScreenSysObject = NULL;delete m_pVisualSysObject;m_pVisualSysObject = NULL;delete m_pVisualSysSotfObject;m_pVisualSysSotfObject = NULL;}HRESULT SetllaEngine::Setlla_Init( HINSTANCE _hInstance, DWORD _width, DWORD _height, DWORD _iswindowed ){m_pScreenSysObject->ScreenSys_InitWin32( _hInstance, _width, _height );m_pVisualSysObject->VisualSys_InitD3D9( _iswindowed );m_pVisualSysSotfObject->VisualSys_SetClipRect( 0, 0,_width, _height  );return S_OK;}HRESULT SetllaEngine::Setlla_UnInit(){m_pScreenSysObject->ScreenSys_UnInitWin32();m_pVisualSysObject->VisualSys_UnInitD3D9();return S_OK;}HRESULT SetllaEngine::Setlla_Process( void(*_pFunction)() ){m_pScreenSysObject->ScreenSys_ProcessWin32( _pFunction );return S_OK;}HRESULT SetllaEngine::Setlla_BeginRender(){m_pVisualSysObject->VisualSys_BeginDrawingBoardD3D9();return S_OK;}HRESULT SetllaEngine::Setlla_EndRender(){m_pVisualSysObject->VisualSys_EndDrawingBoardD3D9();return S_OK;}HRESULT SetllaEngine::Setlla_DrawPixel( int _x, int _y, DWORD _color ){m_pVisualSysObject->VisualSys_DrawPixelToDB( _x, _y, _color );return S_OK;}HRESULT SetllaEngine::Setlla_DrawLine( int x1, int y1, int x2, int y2, DWORD color ){m_pVisualSysSotfObject->VisualSys_DrawLine( x1, y1, x2, y2, color );return S_OK;}HRESULT SetllaEngine::Setlla_DrawLineEx( int x1, int y1, int x2, int y2, DWORD color ){m_pVisualSysSotfObject->VisualSys_DrawLineEx( x1, y1, x2, y2, color );return S_OK;}HRESULT SetllaEngine::Setlla_DrawPolygon2D( const cPolygon2D* _pPolygon ){m_pVisualSysSotfObject->VisualSys_DrawPolygon2D( _pPolygon );return S_OK;}




	
				
	
					   
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