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材質和燈光的輔助函數

http://hi.baidu.com/zyb_debug/blog/item/aee40a12b5877c896438db9d.html
不多說了，龍書的材質燈光函數。可重用代碼

//=========================================

/**

@brief

@param 定義一些顏色常量

@return

*/

//=========================================

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));

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

//=========================================

/**

@brief

@param 定義一些基本常用材質

@return

*/

//=========================================

const D3DMATERIAL9 WHITE_MTRL = InitMtrl(WHITE,WHITE,WHITE,BLACK,8.0f);

const D3DMATERIAL9 RED_MTRL = InitMtrl(RED,RED,RED,BLACK,8.0f);

const D3DMATERIAL9 GREEN_MTRL = InitMtrl(GREEN,GREEN,GREEN,BLACK,8.0f);

const D3DMATERIAL9 BLUE_MTRL = InitMtrl(BLUE,BLUE,BLUE,BLACK,8.0f);

const D3DMATERIAL9 YELLOW_MTRL = InitMtrl(YELLOW,YELLOW,YELLOW,BLACK,8.0f);

//=========================================

/**

@brief

@param 燈光

@return

*/

//=========================================

D3DLIGHT9 InitDirectionalLight(D3DXVECTOR3* direction, D3DXCOLOR* color);

D3DLIGHT9 InitPointLight(D3DXVECTOR3* position, D3DXCOLOR* color);

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

//=========================================

/**

@brief

@param 初始化材質

@return

*/

//=========================================

D3DMATERIAL9 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;

}

//=========================================

/**

@brief

@param 燈光

@return

*/

//=========================================

D3DLIGHT9 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;

return light;

}

D3DLIGHT9 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 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;

}

Posted on 2009-08-15 17:15 zyb_debug 閱讀(1108) 評論(0) 編輯收藏引用

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