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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)->nbrs[0]) |
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#define T_VALID_FLAG(t) ((t)->nbrs[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=smNext_tri_flag_set(m,0,w,b); \ |
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i < SM_TRI_CNT(m); i=smNext_tri_flag_set(m,i+1,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=smNext_valid_tri(m,0); \ |
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i < SM_TRI_CNT(m); i=smNext_valid_tri(m,i+1)) |
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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_MIXED_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,Pick_samp; |
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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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