Microsoft-3D-Movie-Maker/BREN/INC/LIGHT.H

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2022-05-04 01:31:19 +02:00
/*
* Copyright (c) 1993-1995 by Argonaut Technologies Limited. All rights reserved.
*
* $Id: light.h 1.6 1995/05/25 13:37:32 sam Exp $
* $Locker: $
*
* Definitons for a light
*/
#ifndef _LIGHT_H_
#define _LIGHT_H_
#ifdef __cplusplus
extern "C" {
#endif
enum {
/*
* Type of light
*/
BR_LIGHT_TYPE = 0x0003,
BR_LIGHT_POINT = 0x0000,
BR_LIGHT_DIRECT = 0x0001,
BR_LIGHT_SPOT = 0x0002,
/*
* Flag idicating that caluculations are done in view space
*/
BR_LIGHT_VIEW = 0x0004
};
typedef struct br_light {
/*
* Optional identifier
*/
char *identifier;
/*
* Type of light
*/
br_uint_8 type;
/*
* Colour of light (if renderer supports it)
*/
br_colour colour;
/*
* Attenuation of light with distance - constant, linear, and quadratic
* l & q only apply to point and spot lights
*/
br_scalar attenuation_c;
br_scalar attenuation_l;
br_scalar attenuation_q;
/*
* Cone angles for spot light
*/
br_angle cone_outer;
br_angle cone_inner;
} br_light;
#ifdef __cplusplus
};
#endif
#endif