ATF_shadowedTowers2x2.c File Reference

Initializes the data structure which translates a list of struct ACD tiles into a list of shadowed towers. The overlap is a 2x2 grid of ACD tiles for each tower. More...

#include <ATF_shadowedTowersDef.h>

Defines
#define	AFT_SHADOWEDTOWERS_2x2_VERSION   0
	A unique identifier for this shadowed tower map.
#define	TWR(_n)   (0x8000 >> 0x ## _n)
	Macro to set the bit in a tower mask. This macro is UNDEF'd, but DOXYGEN gives one no alternative except to document.
#define	DECLARE_EXTERNAL
	External symbols exported out of shareables need to be have a special declaration.
Variables
DECLARE_EXTERNAL const ATF_shadowedTowers	ATF_ShadowedTowers2x2
	Controls which tiles shadow which towers.

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Detailed Description

Initializes the data structure which translates a list of struct ACD tiles into a list of shadowed towers. The overlap is a 2x2 grid of ACD tiles for each tower.

Author:

JJRussell - russell@slac.stanford.edu

    CVS $Id: ATF_shadowedTowers2x2.c,v 1.4 2011/11/14 17:56:36 russell Exp $

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Variable Documentation

DECLARE_EXTERNAL const ATF_shadowedTowers ATF_ShadowedTowers2x2

Controls which tiles shadow which towers.

This is a readonly data structure. It consists of 3 arrays indexed by tile number. The first array controls the top tiles and the other two array controls the X & Y side tiles. Symmetry allows one to use the X/Y maps for both the ends. The maps are packed in MSB order, ie tower 0 is the MSB bit. This is consistent with the FFSL routine.