www.pudn.com > snow.rar > d3dUtility.cpp
#include "d3dUtility.h"
// vertex formats
const DWORD d3d::Vertex::FVF = D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX1;
bool d3d::InitD3D(
HINSTANCE hInstance,
int width, int height,
bool windowed,
D3DDEVTYPE deviceType,
IDirect3DDevice9** device)
{
//
// Create the main application window.
//
WNDCLASS wc;
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC)d3d::WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(0, IDI_APPLICATION);
wc.hCursor = LoadCursor(0, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = 0;
wc.lpszClassName = "Direct3D9App";
if( !RegisterClass(&wc) )
{
::MessageBox(0, "RegisterClass() - FAILED", 0, 0);
return false;
}
HWND hwnd = 0;
hwnd = ::CreateWindow("Direct3D9App", "¶¬ΘΥ",
WS_EX_TOPMOST|WS_EX_WINDOWEDGE ,
120, 120, width, height,
0 /*parent hwnd*/, 0 /* menu */, hInstance, 0 /*extra*/);
if( !hwnd )
{
::MessageBox(0, "CreateWindow() - FAILED", 0, 0);
return false;
}
::ShowWindow(hwnd, SW_SHOW);
::UpdateWindow(hwnd);
//
// Init D3D:
//
HRESULT hr = 0;
// Step 1: Create the IDirect3D9 object.
IDirect3D9* d3d9 = 0;
d3d9 = Direct3DCreate9(D3D_SDK_VERSION);
if( !d3d9 )
{
::MessageBox(0, "Direct3DCreate9() - FAILED", 0, 0);
return false;
}
D3DCAPS9 caps;
d3d9->GetDeviceCaps(D3DADAPTER_DEFAULT, deviceType, &caps);
int vp = 0;
if( caps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT )
vp = D3DCREATE_HARDWARE_VERTEXPROCESSING;
else
vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
D3DPRESENT_PARAMETERS d3dpp;
d3dpp.BackBufferWidth = width;
d3dpp.BackBufferHeight = height;
d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8;
d3dpp.BackBufferCount = 1;
d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
d3dpp.MultiSampleQuality = 0;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.hDeviceWindow = hwnd;
d3dpp.Windowed = 1;
d3dpp.EnableAutoDepthStencil = true;
d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8;
d3dpp.Flags = 0;
d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
hr = d3d9->CreateDevice(
D3DADAPTER_DEFAULT, // primary adapter
deviceType, // device type
hwnd, // window associated with device
vp, // vertex processing
&d3dpp, // present parameters
device); // return created device
if( FAILED(hr) )
{
d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
hr = d3d9->CreateDevice(
D3DADAPTER_DEFAULT,
deviceType,
hwnd,
vp,
&d3dpp,
device);
if( FAILED(hr) )
{
d3d9->Release(); // done with d3d9 object
::MessageBox(0, "CreateDevice() - FAILED", 0, 0);
return false;
}
}
d3d9->Release(); // done with d3d9 object
return true;
}
int d3d::EnterMsgLoop( bool (*ptr_display)(float timeDelta) )
{
MSG msg;
::ZeroMemory(&msg, sizeof(MSG));
static float lastTime = (float)timeGetTime();
while(msg.message != WM_QUIT)
{
if(::PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
else
{
float currTime = (float)timeGetTime();
float timeDelta = (currTime - lastTime)*0.001f;
ptr_display(timeDelta);
lastTime = currTime;
}
}
return msg.wParam;
}
D3DLIGHT9 d3d::InitDirectionalLight(D3DXVECTOR3* direction, D3DXCOLOR* color)
{
D3DLIGHT9 light;
::ZeroMemory(&light, sizeof(light));
light.Type = D3DLIGHT_DIRECTIONAL;
light.Ambient = *color * 0.4f;
light.Diffuse = *color;
light.Specular = *color * 0.6f;
light.Direction = *direction;
light.Falloff = 10000;
return light;
}
D3DLIGHT9 d3d::InitPointLight(D3DXVECTOR3* position, D3DXCOLOR* color)
{
D3DLIGHT9 light;
::ZeroMemory(&light, sizeof(light));
light.Type = D3DLIGHT_POINT;
light.Ambient = *color * 0.4f;
light.Diffuse = *color;
light.Specular = *color * 0.6f;
light.Position = *position;
light.Range = 1000.0f;
light.Falloff = 1.0f;
light.Attenuation0 = 1.0f;
light.Attenuation1 = 0.0f;
light.Attenuation2 = 0.0f;
return light;
}
D3DLIGHT9 d3d::InitSpotLight(D3DXVECTOR3* position, D3DXVECTOR3* direction, D3DXCOLOR* color)
{
D3DLIGHT9 light;
::ZeroMemory(&light, sizeof(light));
light.Type = D3DLIGHT_SPOT;
light.Ambient = *color * 0.4f;
light.Diffuse = *color;
light.Specular = *color * 0.6f;
light.Position = *position;
light.Direction = *direction;
light.Range = 1000.0f;
light.Falloff = 1.0f;
light.Attenuation0 = 1.0f;
light.Attenuation1 = 0.0f;
light.Attenuation2 = 0.0f;
light.Theta = 0.5f;
light.Phi = 0.7f;
return light;
}
D3DMATERIAL9 d3d::InitMtrl(D3DXCOLOR a, D3DXCOLOR d, D3DXCOLOR s, D3DXCOLOR e, float p)
{
D3DMATERIAL9 mtrl;
mtrl.Ambient = a;
mtrl.Diffuse = d;
mtrl.Specular = s;
mtrl.Emissive = e;
mtrl.Power = p;
return mtrl;
}
d3d::BoundingBox::BoundingBox()
{
// infinite small
_min.x = d3d::INFINITY;
_min.y = d3d::INFINITY;
_min.z = d3d::INFINITY;
_max.x = -d3d::INFINITY;
_max.y = -d3d::INFINITY;
_max.z = -d3d::INFINITY;
}
bool d3d::BoundingBox::isPointInside(D3DXVECTOR3& p)
{
if( p.x >= _min.x && p.y >= _min.y && p.z >= _min.z &&
p.x <= _max.x && p.y <= _max.y && p.z <= _max.z )
{
return true;
}
else
{
return false;
}
}
d3d::BoundingSphere::BoundingSphere()
{
_radius = 0.0f;
}
bool d3d::DrawBasicScene(IDirect3DDevice9* device, float scale)
{
static IDirect3DVertexBuffer9* floor = 0;
static IDirect3DTexture9* tex = 0;
static ID3DXMesh* pillar = 0;
HRESULT hr = 0;
if( device == 0 )
{
if( floor && tex && pillar )
{
// they already exist, destroy them
d3d::Release(floor);
d3d::Release(tex);
d3d::Release(pillar);
}
}
else if( !floor && !tex && !pillar )
{
device->CreateVertexBuffer(
6 * sizeof(d3d::Vertex),
0,
d3d::Vertex::FVF,
D3DPOOL_MANAGED,
&floor,
0);
Vertex* v = 0;
floor->Lock(0, 0, (void**)&v, 0);
v[0] = Vertex(-20.0f, -2.5f, -20.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f);
v[1] = Vertex(-20.0f, -2.5f, 20.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f);
v[2] = Vertex( 20.0f, -2.5f, 20.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f);
v[3] = Vertex(-20.0f, -2.5f, -20.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f);
v[4] = Vertex( 20.0f, -2.5f, 20.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f);
v[5] = Vertex( 20.0f, -2.5f, -20.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f);
floor->Unlock();
D3DXCreateCylinder(device, 0.5f, 0.5f, 5.0f, 20, 20, &pillar, 0);
D3DXCreateTextureFromFile(device,"desert.bmp",&tex);
}
else
{
//
// Pre-Render Setup
//
device->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
device->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
device->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_POINT);
D3DXVECTOR3 dir(15.707f, 15.707f, -5.707f);
D3DXCOLOR col(2.5f, 2.5f, 2.5f, 1.0f);
D3DLIGHT9 light = d3d::InitDirectionalLight(&dir, &col);
device->SetLight(0, &light);
device->LightEnable(0, true);
device->SetRenderState(D3DRS_DIFFUSEMATERIALSOURCE, true);
device->SetRenderState(D3DRS_SPECULARENABLE, true);
//
// Render
//
D3DXMATRIX T, R, P, S;
D3DXMatrixScaling(&S, scale, scale, scale);
// used to rotate cylinders to be parallel with world's y-axis
D3DXMatrixRotationX(&R, -D3DX_PI * 0.5f);
// draw floor
D3DXMatrixIdentity(&T);
T = T * S;
device->SetTransform(D3DTS_WORLD, &T);
device->SetMaterial(&d3d::WHITE_MTRL);
device->SetTexture(0, tex);
device->SetStreamSource(0, floor, 0, sizeof(Vertex));
device->SetFVF(Vertex::FVF);
device->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 2);
}
return true;
}
float d3d::GetRandomFloat(float lowBound, float highBound)
{
if( lowBound >= highBound ) // bad input
return lowBound;
// get random float in [0, 1] interval
float f = (rand() % 10000) * 0.0001f;
// return float in [lowBound, highBound] interval.
return (f * (highBound - lowBound)) + lowBound;
}
void d3d::GetRandomVector(
D3DXVECTOR3* out,
D3DXVECTOR3* min,
D3DXVECTOR3* max)
{
out->x = GetRandomFloat(min->x, max->x);
out->y = GetRandomFloat(min->y, max->y);
out->z = GetRandomFloat(min->z, max->z);
}
DWORD d3d::FtoDw(float f)
{
return *((DWORD*)&f);
}