shadework.h

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/*                          S H A D E W O R K . H
 * BRL-CAD
 *
 * Copyright (c) 1993-2006 United States Government as represented by
 * the U.S. Army Research Laboratory.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this file; see the file named COPYING for more
 * information.
 */
/** @addtogroup rt */
/*@{*/
/** @file shadework.h
 *
 *  @par Source
 *      SECAD/VLD Computing Consortium, Bldg 394
 *@n    The U. S. Army Ballistic Research Laboratory
 *@n    Aberdeen Proving Ground, Maryland  21005
 *
 *  $Header: /cvsroot/brlcad/brlcad/include/shadework.h,v 14.8 2006/09/18 05:24:07 lbutler Exp $
 */
#ifndef SHADEWORK_H
#define SHADEWORK_H

/* for light_specific */
/* # include "light.h" */

#define SW_NLIGHTS      16              /* Max # of light sources */

/*
 *                      S H A D E W O R K
 */
struct shadework {
/* XXX At least the first three of these need to be spectral curves */
        fastf_t         sw_transmit;    /**< @brief  0.0 -> 1.0 */
        fastf_t         sw_reflect;     /**< @brief  0.0 -> 1.0 */
        fastf_t         sw_extinction;  /**< @brief  extinction coeff, mm^-1 */
        fastf_t         sw_refrac_index;
        fastf_t         sw_temperature;
#if RT_MULTISPECTRAL
        struct bn_tabdata *msw_color;
        struct bn_tabdata *msw_basecolor;
#else
        fastf_t         sw_color[3];    /**< @brief  shaded color */
        fastf_t         sw_basecolor[3]; /**< @brief  base color */
#endif
        struct hit      sw_hit;         /**< @brief  ray hit (dist,point,normal) */
        struct uvcoord  sw_uv;
#if RT_MULTISPECTRAL
        struct bn_tabdata *msw_intensity[SW_NLIGHTS];
#else
        fastf_t         sw_intensity[3*SW_NLIGHTS]; /**< @brief  light intensities */
#endif
        fastf_t         sw_tolight[3*SW_NLIGHTS];   /**< @brief  light directions */
        struct light_specific   *sw_visible[SW_NLIGHTS]; /**< @brief  visibility flags/ptrs */
        fastf_t         sw_lightfract[SW_NLIGHTS];/**< @brief  % light visible */
        int             sw_xmitonly;    /**< @brief  flag: need sw_transmit only */
                                        /**< @brief  sw_xmitonly=1, compute transmission only */
                                        /**< @brief  sw_xmitonly=2, want parameters only, not even transmission */
        int             sw_inputs;      /**< @brief  fields from mf_inputs actually filled */
        int             sw_frame;       /**< @brief  # of current frame */
        fastf_t         sw_frametime;   /**< @brief  frame time delta off 1st frame */
        fastf_t         sw_pixeltime;   /**< @brief  pixel time delta off 1st pixel of 1st frame */
        struct seg      *sw_segs;       /**< @brief  segs which made partition */
/*
 * The following is experimental.  DO NOT USE
 */
#define SW_SET_TRANSMIT         0x01
#define SW_SET_REFLECT          0x02
#define SW_SET_REFRAC_INDEX     0x04
#define SW_SET_EXTINCTION       0x10
#define SW_SET_AMBIENT          0x20
#define SW_SET_EMISSION         0x40
        int             sw_phong_set_vector;
        fastf_t         sw_phong_transmit;
        fastf_t         sw_phong_reflect;
        fastf_t         sw_phong_ri;
        fastf_t         sw_phong_extinction;
        fastf_t         sw_phong_ambient;
        fastf_t         sw_phong_emission;
/*
 * End of experimental
 */
};

BU_EXTERN(void          pr_shadework, (const char *str, const struct shadework *swp));
#endif
/*@}*/
/*
 * Local Variables:
 * mode: C
 * tab-width: 8
 * c-basic-offset: 4
 * indent-tabs-mode: t
 * End:
 * ex: shiftwidth=4 tabstop=8
 */

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