/* 
   ======================================================================
   Regions of interest used by mkpmap to constrain location of photons
   
   Roland Schregle (roland.schregle@{hslu.ch, gmail.com}
   (c) Fraunhofer Institute for Solar Energy Systems,
       supported by the German Research Foundation 
       (DFG LU-204/10-2, "Fassadenintegrierte Regelsysteme" (FARESYS)) 
   (c) Lucerne University of Applied Sciences and Arts,
       supported by the Swiss National Science Foundation 
       (SNSF #147053, "Daylight Redirecting Components",
        SNSF #179067, "Light Fields for Spatio-Temporal Glare Assessment")
   (c) Tokyo University of Science,
       supported by the JSPS Grants-in-Aid for Scientific Research 
       (KAKENHI JP19KK0115, "Three-Dimensional Light Flow")
   ======================================================================
   
   $Id$
*/

#ifndef _PMAP_ROI_H
   #define _PMAP_ROI_H

   #include "ray.h"

   #define PMAP_MAXROI              32768
   #define PMAP_ROI_ISSPHERE(roi)   ((roi)->siz[1] <= 0 && (roi)->siz[2] <= 0)
   #define PMAP_ROI_SETSPHERE(roi)  ((roi)->siz[1] = (roi)->siz[2] = -1)


   /* Region of interest defined by geometry */
   typedef struct {
      /* siz [1], siz [2] <= 0 --> sphere, else rectangle */
      float pos [3], siz [3];
   } PhotonMapROI;


   /* Rectangular / spherical regions of interest */
   extern unsigned         pmapNumROI;
   extern PhotonMapROI     *pmapROI;

   /* Polyhedral regions of interest by modifier */
   extern char             *pmapROImodList [];
   extern OBJECT           polyROIset [];
   /* Bounding box for polyhedral ROI */
   extern PhotonMapROI     polyROIbbox;


   void getPolyROIs (char **roiModList);
   /* Find geometry of polyhedral regions of interest from modifier list */

   int photonInROI (const RAY *photonRay);
   /* Returns nonzero if photon defined by photonRay lies in any defined
    * region of interest */
#endif