d3dutility.h

DIRECTX9.0 简单粒子爆炸效果实现

#ifndef __d3dUtilityH__
#define __d3dUtilityH__

#include <d3dx9.h>
#include <string>
#include <limits>

namespace d3d
{
	
	bool InitD3D(
		HINSTANCE hInstance,       
		int width, int height,     
		bool windowed,             
		D3DDEVTYPE deviceType,     
		IDirect3DDevice9** device);

	int EnterMsgLoop( 
		bool (*ptr_display)(float timeDelta));

	LRESULT CALLBACK WndProc(
		HWND hwnd,
		UINT msg, 
		WPARAM wParam,
		LPARAM lParam);

	
	template<class T> void Release(T t)
	{
		if( t )
		{
			t->Release();
			t = 0;
		}
	}
		
	template<class T> void Delete(T t)
	{
		if( t )
		{
			delete t;
			t = 0;
		}
	}

	
	const D3DXCOLOR      WHITE( D3DCOLOR_XRGB(255, 255, 255) );
	const D3DXCOLOR      BLACK( D3DCOLOR_XRGB(  0,   0,   0) );
	const D3DXCOLOR        RED( D3DCOLOR_XRGB(255,   0,   0) );
	const D3DXCOLOR      GREEN( D3DCOLOR_XRGB(  0, 255,   0) );
	const D3DXCOLOR       BLUE( D3DCOLOR_XRGB(  0,   0, 255) );
	const D3DXCOLOR     YELLOW( D3DCOLOR_XRGB(255, 255,   0) );
	const D3DXCOLOR       CYAN( D3DCOLOR_XRGB(  0, 255, 255) );
	const D3DXCOLOR    MAGENTA( D3DCOLOR_XRGB(255,   0, 255) );

	

	D3DLIGHT9 InitDirectionalLight(D3DXVECTOR3* direction, D3DXCOLOR* color);
	D3DLIGHT9 InitPointLight(D3DXVECTOR3* position, D3DXCOLOR* color);
	D3DLIGHT9 InitSpotLight(D3DXVECTOR3* position, D3DXVECTOR3* direction, D3DXCOLOR* color);

	

	D3DMATERIAL9 InitMtrl(D3DXCOLOR a, D3DXCOLOR d, D3DXCOLOR s, D3DXCOLOR e, float p);

	const D3DMATERIAL9 WHITE_MTRL  = InitMtrl(WHITE, WHITE, WHITE, BLACK, 2.0f);
	const D3DMATERIAL9 RED_MTRL    = InitMtrl(RED, RED, RED, BLACK, 2.0f);
	const D3DMATERIAL9 GREEN_MTRL  = InitMtrl(GREEN, GREEN, GREEN, BLACK, 2.0f);
	const D3DMATERIAL9 BLUE_MTRL   = InitMtrl(BLUE, BLUE, BLUE, BLACK, 2.0f);
	const D3DMATERIAL9 YELLOW_MTRL = InitMtrl(YELLOW, YELLOW, YELLOW, BLACK, 2.0f);

	
	struct BoundingBox
	{
		BoundingBox();

		bool isPointInside(D3DXVECTOR3& p);

		D3DXVECTOR3 _min;
		D3DXVECTOR3 _max;
	};

	struct BoundingSphere
	{
		BoundingSphere();

		D3DXVECTOR3 _center;
		float       _radius;
	};


	const float INFINITY = FLT_MAX;
	const float EPSILON  = 0.001f;

	
	bool DrawBasicScene(
		IDirect3DDevice9* device,
		float scale);           

	

	struct Vertex
	{
		Vertex(){}
		Vertex(float x, float y, float z, 
			float nx, float ny, float nz,
			float u, float v)
		{
			_x  = x;  _y  = y;  _z  = z;
			_nx = nx; _ny = ny; _nz = nz;
			_u  = u;  _v  = v;
		}
		float _x, _y, _z;
		float _nx, _ny, _nz;
		float _u, _v;

		static const DWORD FVF;
	};

	
	float GetRandomFloat(float lowBound, float highBound);
	

	
	void GetRandomVector(
		D3DXVECTOR3* out,
		D3DXVECTOR3* min,
		D3DXVECTOR3* max);

	DWORD FtoDw(float f);
}

#endif // __d3dUtilityH__