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gwlarson |
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/* Copyright (c) 1998 Silicon Graphics, Inc. */
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/* SCCSid "$SunId$ SGI" */
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/*
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* sm.h
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*/
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#ifndef _SM_H_
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#define _SM_H_
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#include "rhd_sample.h"
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#include "sm_stree.h"
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#ifndef TRUE
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#define TRUE 1
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#define FALSE 0
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#endif
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#define P_REPLACE_EPS 0.5
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#define SQRT3_2 0.8660254
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#define MAX_EDGES 200
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#define SM_INVALID -1
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#define SM_DEFAULT 0
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#define SM_EXTRA_POINTS 5
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#define SM_EXTRA_VERTS SM_EXTRA_POINTS
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#define SM_POINTSIZ (3*sizeof(float)+ sizeof(int4))
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#define SM_POINT_SPACE SM_EXTRA_POINTS * SM_POINTSIZ
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#define SM_INC_PERCENT 0.60
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#define SM_VIEW_FRAC 0.1
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typedef int VERT; /* One triangle that vertex belongs to- the rest
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are derived by traversing neighbors */
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typedef struct _EDGE {
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int verts[2];
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int tris[2];
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} EDGE;
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#define E_NTH_VERT(e,i) ((e>0)?Edges[(e)].verts[(i)]:Edges[-(e)].verts[(1-i)])
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#define SET_E_NTH_VERT(e,i,v) if(e>0) Edges[(e)].verts[(i)]=(v); \
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else Edges[-(e)].verts[(1-i)]=(v)
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#define E_NTH_TRI(e,i) ((e>0)?Edges[(e)].tris[(i)]:Edges[-(e)].tris[(1-i)])
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#define SET_E_NTH_TRI(e,i,v) if(e>0) Edges[(e)].tris[(i)]=(v); \
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else Edges[-(e)].tris[(1-i)]=(v)
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#define eNew_edge() (((Ecnt) < MAX_EDGES)?(++Ecnt):SM_INVALID)
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#define eClear_edges() (Ecnt = 0)
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#define FOR_ALL_EDGES(i) for((i)=1; (i) <= Ecnt; i++)
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#define FOR_ALL_EDGES_FROM(e,i) for((i)=++e; (i) <= Ecnt; i++)
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typedef struct _TRI {
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int verts[3]; /* Ids into sample and vertex array for each vertex*/
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int nbrs[3]; /* Ids for neighboring triangles: -1 if invalid */
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}TRI;
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#define T_NTH_NBR(t,i) ((t)->nbrs[(i)])
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#define T_CLEAR_NBRS(t) (T_NTH_NBR(t,0)=T_NTH_NBR(t,1)=T_NTH_NBR(t,2)=-1)
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#define T_NTH_NBR_PTR(t,n) \
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(T_NTH_NBR(n,0)==(t)?0:T_NTH_NBR(n,1)==(t)?1:T_NTH_NBR(n,2)==(t)?2:-1)
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#define T_NTH_V(t,i) ((t)->verts[(i)])
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#define T_WHICH_V(t,i) \
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(T_NTH_V(t,0)==(i)?0:T_NTH_V(t,1)==(i)?1:T_NTH_V(t,2)==(i)?2:-1)
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#define T_NEXT_FREE(t) ((t)->verts[0])
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#define T_VALID_FLAG(t) ((t)->verts[1])
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#define T_IS_VALID(t) (T_VALID_FLAG(t)!=-1)
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#define T_FLAGS 4
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#define T_FLAG_BYTES T_FLAGS/8.0
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#define T_TOTAL_FLAG_BYTES(c) ((((c)+31)>>5)*sizeof(int4))
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typedef struct _SM {
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FVECT view_center; /* Canonical view center defining unit sphere */
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RSAMP *samples; /* Sample point information */
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STREE locator; /* spherical quadtree for point/triangle location */
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int max_tris; /* Maximum number of triangles */
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int tri_cnt; /* Total number of tris ever alloc at one time*/
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int num_tris; /* Current number of sample (nonbase)triangles */
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int free_tris; /* pointer to free_list */
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int max_verts; /* Maximum number of vertices in the mesh */
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TRI *tris; /* Pointer to list of triangle structs */
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VERT *verts; /* List of vertices */
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int4 *flags[T_FLAGS]; /* Bit 0 set if active(in current frustum) */
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/* Bit 1 set if not rendered since created */
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/* Bit 2 set if base triangle */
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/* Bit 3 set used for LRU replacement */
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char *base; /* Allocated space */
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}SM;
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#define T_ACTIVE_FLAG 0
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#define T_NEW_FLAG 1
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#define T_BASE_FLAG 2
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#define T_LRU_FLAG 3
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#define SM_VIEW_CENTER(m) ((m)->view_center)
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#define SM_SAMP(m) ((m)->samples)
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#define SM_LOCATOR(m) (&((m)->locator))
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#define SM_MAX_TRIS(m) ((m)->max_tris)
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#define SM_TRI_CNT(m) ((m)->tri_cnt)
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#define SM_NUM_TRIS(m) ((m)->num_tris)
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#define SM_FREE_TRIS(m) ((m)->free_tris)
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#define SM_MAX_VERTS(m) ((m)->max_verts)
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#define SM_TRIS(m) ((m)->tris)
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#define SM_VERTS(m) ((m)->verts)
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#define SM_NTH_FLAGS(m,n) ((m)->flags[(n)])
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#define SM_BASE(m) ((m)->base)
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#define TF_OFFSET(n) ((n) >> 5)
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#define TF_BIT(n) ((n) & 0x1f)
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#define SM_IS_NTH_T_FLAG(sm,n,f) (SM_NTH_FLAGS(sm,f)[TF_OFFSET(n)] & (0x1 <<TF_BIT(n)))
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#define SM_SET_NTH_T_FLAG(sm,n,f) (SM_NTH_FLAGS(sm,f)[TF_OFFSET(n)] |= (0x1<<TF_BIT(n)))
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#define SM_CLEAR_NTH_T_FLAG(sm,n,f) (SM_NTH_FLAGS(sm,f)[TF_OFFSET(n)] &= ~(0x1<<TF_BIT(n)))
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#define SM_IS_NTH_T_ACTIVE(sm,n) SM_IS_NTH_T_FLAG(sm,n,T_ACTIVE_FLAG)
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#define SM_IS_NTH_T_BASE(sm,n) SM_IS_NTH_T_FLAG(sm,n,T_BASE_FLAG)
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#define SM_IS_NTH_T_NEW(sm,n) SM_IS_NTH_T_FLAG(sm,n,T_NEW_FLAG)
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#define SM_IS_NTH_T_LRU(sm,n) SM_IS_NTH_T_FLAG(sm,n,T_LRU_FLAG)
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#define SM_SET_NTH_T_ACTIVE(sm,n) SM_SET_NTH_T_FLAG(sm,n,T_ACTIVE_FLAG)
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#define SM_SET_NTH_T_BASE(sm,n) SM_SET_NTH_T_FLAG(sm,n,T_BASE_FLAG)
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#define SM_SET_NTH_T_NEW(sm,n) SM_SET_NTH_T_FLAG(sm,n,T_NEW_FLAG)
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#define SM_SET_NTH_T_LRU(sm,n) SM_SET_NTH_T_FLAG(sm,n,T_LRU_FLAG)
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#define SM_CLEAR_NTH_T_ACTIVE(sm,n) SM_CLEAR_NTH_T_FLAG(sm,n,T_ACTIVE_FLAG)
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#define SM_CLEAR_NTH_T_BASE(sm,n) SM_CLEAR_NTH_T_FLAG(sm,n,T_BASE_FLAG)
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#define SM_CLEAR_NTH_T_NEW(sm,n) SM_CLEAR_NTH_T_FLAG(sm,n,T_NEW_FLAG)
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#define SM_CLEAR_NTH_T_LRU(sm,n) SM_CLEAR_NTH_T_FLAG(sm,n,T_LRU_FLAG)
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#define SM_NTH_TRI(m,n) (&(SM_TRIS(m)[(n)]))
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#define SM_NTH_VERT(m,n) (SM_VERTS(m)[(n)])
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#define SM_FREE_TRI_ID(m,n) (n = SM_FREE_TRIS(m)==-1? \
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(SM_TRI_CNT(m)<SM_MAX_TRIS(m)?SM_TRI_CNT(m)++:-1):(n=SM_FREE_TRIS(m), \
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SM_FREE_TRIS(m)=T_NEXT_FREE(SM_NTH_TRI(m,SM_FREE_TRIS(m))),n))
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#define SM_SAMP_BASE(m) RS_BASE(SM_SAMP(m))
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#define SM_SAMP_FREE(m) RS_FREE(SM_SAMP(m))
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#define SM_SAMP_EOL(m) RS_EOL(SM_SAMP(m))
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#define SM_MAX_SAMP(m) RS_MAX_SAMP(SM_SAMP(m))
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#define SM_MAX_AUX_PT(m) RS_MAX_AUX_PT(SM_SAMP(m))
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#define SM_NTH_WV(m,i) RS_NTH_W_PT(SM_SAMP(m),i)
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#define SM_NTH_W_DIR(m,i) RS_NTH_W_DIR(SM_SAMP(m),i)
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#define SM_NTH_RGB(m,i) RS_NTH_RGB(SM_SAMP(m),i)
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#define SM_RGB(m) RS_RGB(SM_SAMP(m))
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#define SM_BRT(m) RS_BRT(SM_SAMP(m))
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#define SM_NTH_BRT(m,i) RS_NTH_BRT(SM_SAMP(m),i)
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#define SM_CHR(m) RS_CHR(SM_SAMP(m))
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#define SM_NTH_CHR(m,i) RS_NTH_CHR(SM_SAMP(m),i)
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#define SM_NUM_SAMP(m) RS_NUM_SAMP(SM_SAMP(m))
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#define SM_TONE_MAP(m) RS_TONE_MAP(SM_SAMP(m))
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#define SM_ALLOWED_VIEW_CHANGE(m) (SM_NUM_SAMP(m)/smDist_sum*SM_VIEW_FRAC)
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#define SM_FOR_ALL_FLAGGED_TRIS(m,i,w,b) for(i=0,i=smNext_tri_flag_set(m,i,w,b);i < SM_TRI_CNT(m);i++,i=smNext_tri_flag_set(m,i,w,b))
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#define SM_FOR_ALL_ACTIVE_TRIS(m,i) SM_FOR_ALL_FLAGGED_TRIS(m,i,T_ACTIVE_FLAG,0)
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#define SM_FOR_ALL_NEW_TRIS(m,i) SM_FOR_ALL_FLAGGED_TRIS(m,i,T_NEW_FLAG,0)
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#define SM_FOR_ALL_BASE_TRIS(m,i) SM_FOR_ALL_FLAGGED_TRIS(m,i,T_BASE_FLAG,0)
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#define SM_FOR_ALL_VALID_TRIS(m,i) for((i)=0,(i)=smNext_valid_tri(m,i);(i)< \
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SM_TRI_CNT(m); (i)++,(i)= smNext_valid_tri(m,i))
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#define SM_FOR_ALL_ACTIVE_FG_TRIS(m,i) SM_FOR_ALL_FLAGGED_TRIS(m,i,T_ACTIVE_FLAG,1)
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#define SM_FOR_ALL_ACTIVE_BG_TRIS(m,i) SM_FOR_ALL_FLAGGED_TRIS(m,i,T_ACTIVE_FLAG,2)
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#define SM_FOR_ALL_ADJACENT_TRIS(sm,id,t) for(t=smTri_next_ccw_nbr(sm,t,id); \
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t!=SM_NTH_TRI(sm,SM_NTH_VERT(sm,id)); t=smTri_next_ccw_nbr(sm,t,id))
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#define SM_INVALID_SAMP_ID(sm,id) (((id) < 0) || ((id) >= SM_MAX_SAMP(sm)))
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#define SM_INVALID_POINT_ID(sm,id) (((id) < 0) || ((id) >= SM_MAX_AUX_PT(sm)))
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#define SM_T_CENTROID(sm,t,c) tri_centroid(SM_NTH_WV(sm,T_NTH_V(t,0)),SM_NTH_WV(sm,T_NTH_V(t,1)),SM_NTH_WV(sm,T_NTH_V(t,2)),c)
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#define SM_T_NTH_WV(sm,t,i) (SM_NTH_WV(sm,T_NTH_V(t,i)))
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#define SM_BASE_ID(s,i) \
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((i) >= RS_MAX_SAMP(SM_SAMP(s)) && (i) < RS_MAX_AUX_PT(SM_SAMP(s)))
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#define SM_BG_SAMPLE(sm,i) (SM_NTH_W_DIR(sm,i)==-1)
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#define SM_BG_TRI(sm,i) (SM_BG_SAMPLE(sm,T_NTH_V(SM_NTH_TRI(sm,i),0)) || \
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SM_BG_SAMPLE(sm,T_NTH_V(SM_NTH_TRI(sm,i),1)) || \
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SM_BG_SAMPLE(sm,T_NTH_V(SM_NTH_TRI(sm,i),2)))
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#define SM_FOR_ALL_SAMPLES(sm,i) for((i)=0;i < SM_NUM_SAMP(sm);(i)++)
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typedef struct _T_DEPTH {
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int tri;
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double depth;
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}T_DEPTH;
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extern SM *smMesh;
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extern int smNew_tri_cnt;
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extern double smDist_sum;
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#ifdef TEST_DRIVER
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extern VIEW View;
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extern VIEW Current_View;
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extern int Pick_tri,Picking;
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extern FVECT Pick_point[500],Pick_origin,Pick_dir;
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extern FVECT Pick_v0[500],Pick_v1[500],Pick_v2[500];
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extern FVECT P0,P1,P2;
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extern int Pick_cnt;
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extern FVECT FrustumNear[4],FrustumFar[4];
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#endif
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#ifdef DEBUG
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extern int Malloc_cnt;
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#endif
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#endif
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