262 lines
8.9 KiB
C++
262 lines
8.9 KiB
C++
// ---------------------------------------------------------------------------
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//
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// @file TwSimpleDX9.cpp
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// @brief A simple example that uses AntTweakBar with DirectX9
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//
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// AntTweakBar: http://anttweakbar.sourceforge.net/doc
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// DirectX: http://msdn.microsoft.com/directx
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//
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// @author Philippe Decaudin
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// @date 2006/05/20
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//
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// ---------------------------------------------------------------------------
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#include <AntTweakBar.h>
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#include <d3d9.h>
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//#include <dxerr9.h>
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#include <math.h>
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// Direct3D structures
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IDirect3D9 * g_D3D = NULL;
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IDirect3DDevice9 * g_D3DDev = NULL;
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D3DPRESENT_PARAMETERS g_D3Dpp;
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// D3D states initialization function
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void InitD3D()
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{
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// Set viewport
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D3DVIEWPORT9 vp = {0,0, g_D3Dpp.BackBufferWidth,g_D3Dpp.BackBufferHeight, 0,1};
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g_D3DDev->SetViewport(&vp);
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// Set D3D matrices
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D3DMATRIX matId = { 1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1 };
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g_D3DDev->SetTransform(D3DTS_WORLD, &matId);
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g_D3DDev->SetTransform(D3DTS_VIEW, &matId);
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D3DMATRIX matProj = { (float)g_D3Dpp.BackBufferHeight/g_D3Dpp.BackBufferWidth,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1 };
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g_D3DDev->SetTransform(D3DTS_PROJECTION, &matProj);
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// Disable lighting and culling
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g_D3DDev->SetRenderState( D3DRS_LIGHTING, FALSE );
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g_D3DDev->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
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g_D3DDev->SetRenderState( D3DRS_ZENABLE, D3DZB_FALSE );
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}
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// Win32 MessageProc callback
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LRESULT CALLBACK MessageProc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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// Send event message to AntTweakBar
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if( TwEventWin(wnd, msg, wParam, lParam) )
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return 0; // Event has been handled by AntTweakBar
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switch( msg )
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{
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case WM_CHAR:
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if( wParam==VK_ESCAPE )
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PostQuitMessage(0);
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return 0;
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case WM_DESTROY:
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PostQuitMessage(0);
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return 0;
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case WM_SIZE: // Window size has been changed
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// Reset D3D device
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if( g_D3DDev )
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{
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g_D3Dpp.BackBufferWidth = LOWORD(lParam);
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g_D3Dpp.BackBufferHeight = HIWORD(lParam);
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if( g_D3Dpp.BackBufferWidth>0 && g_D3Dpp.BackBufferHeight>0 )
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{
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g_D3DDev->Reset(&g_D3Dpp);
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InitD3D(); // re-initialize D3D states
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}
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// TwWindowSize has been called by TwEventWin32,
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// so it is not necessary to call it again here.
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}
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return 0;
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default:
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return DefWindowProc(wnd, msg, wParam, lParam);
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}
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}
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// Main
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int WINAPI WinMain(HINSTANCE instance, HINSTANCE, LPSTR, int cmdShow)
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{
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// Register our window class
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WNDCLASSEX wcex = { sizeof(WNDCLASSEX), CS_CLASSDC|CS_DBLCLKS, MessageProc, 0L, 0L,
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instance, NULL, NULL, NULL, NULL, "TwDX9", NULL };
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RegisterClassEx(&wcex);
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// Create a window
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const int W = 640;
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const int H = 480;
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BOOL fullscreen = FALSE; // Set to TRUE to run in fullscreen
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RECT rect = { 0, 0, W, H };
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DWORD style = fullscreen ? WS_POPUP : WS_OVERLAPPEDWINDOW;
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AdjustWindowRect(&rect, style, FALSE);
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HWND wnd = CreateWindow("TwDX9", "AntTweakBar simple example using DirectX9",
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style, CW_USEDEFAULT, CW_USEDEFAULT,
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rect.right-rect.left, rect.bottom-rect.top, NULL, NULL, instance, NULL);
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if( !wnd )
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{
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MessageBox(NULL, "Cannot create window", "Error", MB_OK|MB_ICONERROR);
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return FALSE;
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}
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ShowWindow(wnd, cmdShow);
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UpdateWindow(wnd);
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// Initialize Direct3D
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g_D3D = Direct3DCreate9(D3D_SDK_VERSION);
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if( !g_D3D )
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{
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MessageBox(wnd, "Cannot initialize DirectX", "Error", MB_OK|MB_ICONERROR);
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return FALSE;
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}
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// Create a Direct3D device
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ZeroMemory( &g_D3Dpp, sizeof(D3DPRESENT_PARAMETERS) );
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g_D3Dpp.Windowed = !fullscreen;
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if( fullscreen )
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{
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g_D3Dpp.BackBufferWidth = W;
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g_D3Dpp.BackBufferHeight = H;
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}
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g_D3Dpp.BackBufferCount = 1;
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g_D3Dpp.SwapEffect = D3DSWAPEFFECT_FLIP;
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if( fullscreen )
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g_D3Dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
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else
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g_D3Dpp.BackBufferFormat = D3DFMT_UNKNOWN;
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g_D3Dpp.hDeviceWindow = wnd;
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g_D3Dpp.EnableAutoDepthStencil = TRUE;
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g_D3Dpp.AutoDepthStencilFormat = D3DFMT_D16;
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g_D3Dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
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HRESULT hr = g_D3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, wnd,
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D3DCREATE_SOFTWARE_VERTEXPROCESSING, &g_D3Dpp, &g_D3DDev);
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if( FAILED(hr) )
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{
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//DXTRACE_ERR_MSGBOX("Cannot create DirectX device", hr);
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MessageBox(wnd, "Cannot create DirectX device", "Error", MB_OK|MB_ICONERROR);
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g_D3D->Release();
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g_D3D = NULL;
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return FALSE;
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}
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// This example draws a moving strip;
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// create a buffer of vertices for the strip
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struct Vertex
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{
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float x, y, z;
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DWORD color;
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};
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Vertex vertices[2002];
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int numSec = 100; // number of strip sections
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float color[] = { 1, 0, 0 }; // strip color
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unsigned int bgColor = D3DCOLOR_ARGB(255, 128, 196, 196); // background color
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// Init some D3D states
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InitD3D();
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// Initialize AntTweakBar
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// (note that the Direct3D device pointer must be passed to TwInit)
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if( !TwInit(TW_DIRECT3D9, g_D3DDev) )
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{
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MessageBox(wnd, TwGetLastError(), "Cannot initialize AntTweakBar", MB_OK|MB_ICONERROR);
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g_D3DDev->Release();
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g_D3DDev = NULL;
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g_D3D->Release();
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g_D3D = NULL;
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return FALSE;
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}
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// Create a tweak bar
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TwBar *bar = TwNewBar("TweakBar");
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TwDefine(" GLOBAL help='This example shows how to integrate AntTweakBar in a DirectX9 application.' "); // Message added to the help bar.
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TwDefine(" TweakBar color='128 224 160' text=dark "); // Change TweakBar color and use dark text
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// Add 'numSec' to 'bar': it is a modifiable (RW) variable of type TW_TYPE_INT32. Its shortcuts are [s] and [S].
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TwAddVarRW(bar, "NumSec", TW_TYPE_INT32, &numSec,
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" label='Strip length' min=1 max=1000 keyIncr=s keyDecr=S help='Number of segments of the strip.' ");
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// Add 'color' to 'bar': it is a modifiable variable of type TW_TYPE_COLOR3F (3 floats color)
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TwAddVarRW(bar, "Color", TW_TYPE_COLOR3F, &color, " label='Strip color' ");
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// Add 'bgColor' to 'bar': it is a modifiable variable of type TW_TYPE_COLOR32 (32 bits color)
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TwAddVarRW(bar, "BgColor", TW_TYPE_COLOR32, &bgColor, " label='Background color' ");
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// Add 'width' and 'height' to 'bar': they are read-only (RO) variables of type TW_TYPE_INT32.
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TwAddVarRO(bar, "Width", TW_TYPE_INT32, &g_D3Dpp.BackBufferWidth,
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" label='wnd width' help='Current graphics window width.' ");
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TwAddVarRO(bar, "Height", TW_TYPE_INT32, &g_D3Dpp.BackBufferHeight,
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" label='wnd height' help='Current graphics window height.' ");
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// Main loop
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bool quit = false;
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DWORD t0 = GetTickCount();
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while( !quit )
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{
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// Clear screen and begin draw
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g_D3DDev->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, bgColor, 1.0f, 0);
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g_D3DDev->BeginScene();
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// Draw scene
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float s, t = (float)(GetTickCount() - t0)/1000.0f;
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for( int i=0; i<=numSec; ++i ) // update vertices
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{
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s = (float)i/100;
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vertices[2*i+0].x = 0.05f+0.7f*cosf(2.0f*s+5.0f*t);
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vertices[2*i+1].x = vertices[2*i+0].x + (0.25f+0.1f*cosf(s+t));
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vertices[2*i+0].y = vertices[2*i+1].y = 0.7f*(0.7f+0.3f*sinf(s+t))*sinf(1.5f*s+3.0f*t);
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vertices[2*i+0].z = vertices[2*i+1].z = 0;
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s = (float)i/numSec;
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vertices[2*i+0].color = vertices[2*i+1].color =
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D3DCOLOR_XRGB((int)(255*color[0]*s), (int)(255*color[1]*s), (int)(255*color[2]*s));
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}
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g_D3DDev->SetFVF(D3DFVF_XYZ|D3DFVF_DIFFUSE);
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g_D3DDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2*numSec, vertices, sizeof(Vertex)); // draw strip
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// Draw tweak bars
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TwDraw();
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// End draw
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g_D3DDev->EndScene();
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// Present frame buffer
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g_D3DDev->Present(NULL, NULL, NULL, NULL);
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// Process windows messages
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MSG msg;
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while( PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) )
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{
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if( msg.message==WM_QUIT )
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quit = true;
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else if( !TranslateAccelerator(msg.hwnd, NULL, &msg) )
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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}
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} // End of main loop
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// Terminate AntTweakBar
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TwTerminate();
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// Release Direct3D
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g_D3DDev->Release();
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g_D3DDev = NULL;
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g_D3D->Release();
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g_D3D = NULL;
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return 0;
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}
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