SparrowOSTS_121127.ISO
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#help_index "Graphics/CGrVectMap"
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/*
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This processes a monocrome map, finds edges and generates vect graphic
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representations of the map broken into small rectangles. The rectangles
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are encoded a bit-oriented structure.
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PolyLineStruct {
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1 Bit : set is valid polyline, clear is end of polyline list
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(R_BITS) : X-coordinate of polyline start
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(R_BITS) : Y-coordinate of polyline start
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(poly_line_cnt_bits): Number of polyline direction entries
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N*3 : N-long seq of 1 pixel directional movements
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}
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FloodFillStruct {
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1 Bit : set is valid flood fill entry, clear is end of floodfill list
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(1+R_BITS): X-coordinate*2 of flood fill (half pixels)
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(1+R_BITS): Y-coordinate*2 of flood fill (half pixels)
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}
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Rect {
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1 Bit : set is valid rectangle entry, clear is end of rectangle list
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PolyLineStructList
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FloodFillStructList
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}
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*/
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#define R_BITS 6
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#define R_BORDER 1
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#define R_WIDTH (1<<R_BITS-2*R_BORDER)
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#define R_HEIGHT (1<<R_BITS-2*R_BORDER)
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U0 GrVectMapBlotRect(CDC *dc,CGrVectMap *vm,I64 bit,F64 scale)
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{
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I64 k,cnt,i0,j0,i,j,rect_dft,not_rect_dft;
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U8 *body=vm->body;
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F64 d=scale/2;
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dc->pen_width=scale+0.5;
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dc->color=rect_dft=Bt(body,bit++);
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not_rect_dft=1-rect_dft;
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dc->bkcolor=vm->bkcolor;
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GrRect(dc,0,0,dc->width,dc->height);
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dc->color=not_rect_dft;
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while (Bt(body,bit++)) {
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j=BFieldExtU32(body,bit,R_BITS);
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bit+=R_BITS;
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i=BFieldExtU32(body,bit,R_BITS);
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bit+=R_BITS;
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cnt=BFieldExtU32(body,bit,vm->poly_line_cnt_bits);
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bit+=vm->poly_line_cnt_bits;
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if (!cnt)
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GrPlot3(dc,(j-R_BORDER)*scale+d,(i-R_BORDER)*scale+d,0);
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else {
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i0=i;j0=j;
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while (cnt--) {
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k=BFieldExtU32(body,bit,3);
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bit+=3;
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i+=gr_y_offsets[k];
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j+=gr_x_offsets[k];
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GrLine3(dc,(j0-R_BORDER)*scale+d,(i0-R_BORDER)*scale+d,0,
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(j-R_BORDER)*scale+d,(i-R_BORDER)*scale+d,0);
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i0=i; j0=j;
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}
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}
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}
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while (Bt(body,bit++)) {
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j=BFieldExtU32(body,bit,R_BITS+1);
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bit+=R_BITS+1;
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i=BFieldExtU32(body,bit,R_BITS+1);
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bit+=R_BITS+1;
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if (GrPeek(dc,(j/2.0-R_BORDER)*scale+d,(i/2.0-R_BORDER)*scale+d)==rect_dft)
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GrFloodFill(dc,(j/2.0-R_BORDER)*scale+d,(i/2.0-R_BORDER)*scale+d);
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}
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}
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class CMPVMBlot
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{
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CDC *dc,*rect_dc;
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CGrVectMap *vm;
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I64 bit;
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I64 xx,yy;
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F64 scale;
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I64 busy;
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};
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U0 MPGrVectMapBlotRect(CMPVMBlot *mp)
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{
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GrVectMapBlotRect(mp->rect_dc,mp->vm,mp->bit,mp->scale);
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GrBlot(mp->dc,mp->xx,mp->yy,mp->rect_dc);
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mp->busy=FALSE;
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}
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public U0 GrVectMapBlotMP(CDC *dc,I64 x,I64 y,CGrVectMap *vm,F64 scale=1.0,I64 _mp_cnt=0)
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{
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I64 i,i_lo,i_hi,j,j_lo,j_hi,k,cpu,pass,
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w=(vm->width +R_WIDTH-1)/R_WIDTH,
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h=(vm->height+R_HEIGHT-1)/R_HEIGHT;
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F64 xx,yy,r_scale=scale*(R_WIDTH+1.0/scale)/R_WIDTH;
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CMPVMBlot *mp;
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if (!dc || !vm) return;
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if (Gs->num)
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_mp_cnt=1; //Only core #0 can be master
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else if (!_mp_cnt)
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_mp_cnt=mp_cnt;
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else if (_mp_cnt>mp_cnt)
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_mp_cnt=mp_cnt;
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cpu=_mp_cnt-1;
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mp=MAlloc(_mp_cnt*sizeof(CMPVMBlot));
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for (i=0;i<_mp_cnt;i++) {
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mp[i].rect_dc=DCNew(DCT_COLOR8,R_WIDTH*r_scale,R_HEIGHT*r_scale,Fs);
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mp[i].dc=DCAlias(dc,dc->win_task);
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mp[i].dc->color=dc->color;
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mp[i].vm=vm;
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mp[i].scale=r_scale;
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mp[i].busy=FALSE;
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}
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if (y<0)
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i_lo=-y/(R_HEIGHT*scale);
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else
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i_lo=0;
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if (R_HEIGHT*scale*h+y>dc->height)
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i_hi=MinI64((dc->height-y)/(R_HEIGHT*scale)+1,h);
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else
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i_hi=h;
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if (x<0)
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j_lo=-x/(R_WIDTH*scale);
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else
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j_lo=0;
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if (R_WIDTH*scale*w+x>dc->width)
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j_hi=MinI64((dc->width-x)/(R_WIDTH*scale)+1,w);
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else
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j_hi=w;
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xx=x+j_lo*R_WIDTH*scale;
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for (j=j_lo;j<j_hi;j++) {
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yy=y+i_lo*R_WIDTH*scale;
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k=i_lo*w+j;
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for (i=i_lo;i<i_hi;i++) {
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if (_mp_cnt>1) {
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pass=0;
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//Does up to two passes
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while (TRUE)
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if (!pass && !cpu) {
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pass++;
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cpu=_mp_cnt-1;
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} else if (mp[cpu].busy) //by the way, core #0 is never busy
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cpu--;
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else
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break;
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}
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mp[cpu].xx=xx;
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mp[cpu].yy=yy;
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mp[cpu].bit=vm->rect_start_bits[k];
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if (!cpu)
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MPGrVectMapBlotRect(mp);
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else {
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mp[cpu].busy=TRUE;
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MPJob(&MPGrVectMapBlotRect,&mp[cpu],cpu);
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}
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k+=w;
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yy+=R_HEIGHT*scale;
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}
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xx+=R_WIDTH*scale;
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}
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for (i=_mp_cnt-1;i>=0;i--) {
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while(mp[i].busy)
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Yield;
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DCDel(mp[i].rect_dc);
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DCDel(mp[i].dc);
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}
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Free(mp);
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}
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Bool IsSolidSquare(CDC *dc,I64 x,I64 y,I64 edge,CColorROPU32 color)
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{
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I64 i,j;
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edge>>=1;
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for (i=-edge;i<edge;i++)
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for (j=-edge;j<edge;j++)
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if (GrPeek(dc,x+j,y+i)!=color)
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return FALSE;
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return TRUE;
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}
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I64 GrVectizeRect(CDC *dc,I64 _x,I64 _y,CGrVectMap *vm,I64 _bit,
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I64 poly_line_cnt_bits,I64 *_max_poly_line_cnt_bits)
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{ //Returns number of bits to represent rect
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CDC *b_desired =DCExtract(dc,_x-R_BORDER,_y-R_BORDER,_x+R_WIDTH+R_BORDER*2-1,_y+R_BORDER*2+R_HEIGHT-1),
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*b_edge=DCNew(DCT_COLOR8,R_WIDTH+R_BORDER*2,R_HEIGHT+R_BORDER*2,Fs),
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*b_actual,
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*b_link_check=DCNew(DCT_COLOR8,R_WIDTH+R_BORDER*2,R_HEIGHT+R_BORDER*2,Fs);
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I64 step,step_bits,x,y,xx,yy,xx1,yy1,xx2,yy2,cnt=0,k,kk,rect_dft,not_rect_dft,
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cnt_bit,link_bit1,link_bit2,link_bit_limit,bit=_bit,max_poly_line_cnt_bits;
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U8 *body=vm->body;
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Bool found;
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if (_max_poly_line_cnt_bits)
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max_poly_line_cnt_bits=*_max_poly_line_cnt_bits;
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else
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max_poly_line_cnt_bits=3;
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//Count ON pixels
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for (y=0;y<R_HEIGHT;y++)
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for (x=0;x<R_WIDTH;x++)
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if (GrPeek(b_desired,R_BORDER+x,R_BORDER+y)==1)
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cnt++;
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if (cnt>=R_WIDTH*R_HEIGHT/2)
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rect_dft=1;
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else
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rect_dft=0;
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not_rect_dft=1-rect_dft;
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BEqu(body,bit++,rect_dft);
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if (!cnt || cnt==R_WIDTH*R_HEIGHT) {
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//Rect is all ON or OFF
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Btr(body,bit++); //End of poly-line list
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Btr(body,bit++); //End of flood-fill list
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} else {
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for (y=0;y<R_HEIGHT+R_BORDER*2;y++)
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for (x=0;x<R_WIDTH+R_BORDER*2;x++) {
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b_edge->color=0;
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if (GrPeek(b_desired,x,y)==not_rect_dft)
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for (k=0;k<8;k++)
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if (GrPeek(b_desired,x+gr_x_offsets[k],y+gr_y_offsets[k])==rect_dft)
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b_edge->color=1;
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GrPlot(b_edge,x,y);
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}
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b_edge->color=0;
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link_bit1=bit;
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for (y=0;y<R_HEIGHT+R_BORDER*2;y++)
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for (x=0;x<R_WIDTH+R_BORDER*2;x++)
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if (GrPeek(b_edge,x,y)==1) {
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Bts(body,bit++); //Show not end of poly-line list
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GrPlot(b_edge,x,y);
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BFieldOrU32(body,bit,x); //Poly-line starting X coordinate in rect
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bit+=R_BITS;
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BFieldOrU32(body,bit,y); //Poly-line starting Y coordinate in rect
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bit+=R_BITS;
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yy=y; xx=x;
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cnt_bit=bit;
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bit+=poly_line_cnt_bits; //Reserve space for count of direction offsets in poly-line
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cnt=0;
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do {
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found=FALSE;
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for (k=0;k<8;k++) {
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yy2=yy+gr_y_offsets[k];
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xx2=xx+gr_x_offsets[k];
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if (0<=xx2<R_WIDTH+R_BORDER*2 &&
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0<=yy2<R_HEIGHT+R_BORDER*2 &&
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GrPeek(b_edge,xx2,yy2)==1) {
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cnt++;
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BFieldOrU32(body,bit,k); //3-bit (or 2) incoding of direction movement
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bit+=3;
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GrPlot(b_edge,xx2,yy2);
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yy=yy2; xx=xx2;
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found=TRUE;
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break;
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}
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}
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} while (found);
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BFieldOrU32(body,cnt_bit,cnt);
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if (cnt && Bsr(cnt)+1>max_poly_line_cnt_bits)
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max_poly_line_cnt_bits=Bsr(cnt)+1;
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}
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//Connect adjacent groups with link to prevent flood-fill leaks.
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link_bit_limit=bit;
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while (link_bit1<link_bit_limit) {
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link_bit1++;
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x=BFieldExtU32(body,link_bit1,R_BITS);
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link_bit1+=R_BITS;
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y=BFieldExtU32(body,link_bit1,R_BITS);
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link_bit1+=R_BITS;
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link_bit2=link_bit1;
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yy=y;xx=x;
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cnt=BFieldExtU32(body,link_bit2,poly_line_cnt_bits);
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link_bit2+=poly_line_cnt_bits;
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while (TRUE) {
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for (k=0;k<8;k++) {
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yy2=yy+gr_y_offsets[k];
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xx2=xx+gr_x_offsets[k];
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if (0<=xx2<R_WIDTH+R_BORDER*2 &&
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0<=yy2<R_HEIGHT+R_BORDER*2 &&
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GrPeek(b_link_check,xx2,yy2)==1) {
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Bts(body,bit++);
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BFieldOrU32(body,bit,xx);
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bit+=R_BITS;
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BFieldOrU32(body,bit,yy);
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bit+=R_BITS;
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BFieldOrU32(body,bit,1);
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bit+=poly_line_cnt_bits;
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BFieldOrU32(body,bit,k);
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bit+=3;
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}
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}
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if (!cnt--)
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break;
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kk=BFieldExtU32(body,link_bit2,3);
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link_bit2+=3;
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yy+=gr_y_offsets[kk];
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xx+=gr_x_offsets[kk];
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}
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link_bit2=link_bit1;
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yy=y;xx=x;
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b_link_check->color=1;
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GrPlot(b_link_check,xx,yy);
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cnt=BFieldExtU32(body,link_bit2,poly_line_cnt_bits);
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link_bit2+=poly_line_cnt_bits;
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while (cnt--) {
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kk=BFieldExtU32(body,link_bit2,3);
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link_bit2+=3;
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yy+=gr_y_offsets[kk];
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xx+=gr_x_offsets[kk];
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GrPlot(b_link_check,xx,yy);
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}
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link_bit1=link_bit2;
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}
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Btr(body,bit++); //End of poly-line list
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b_desired->color=rect_dft;
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GrLineRect4(b_desired,0,0,R_WIDTH+2*R_BORDER-1,R_HEIGHT+2*R_BORDER-1);
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Btr(body,bit); //Temp end of flood-fill list
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for (step_bits=2;step_bits>=1;step_bits-=1) {
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step=1<<step_bits;
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b_actual=DCNew(DCT_COLOR8,R_WIDTH/step,R_HEIGHT/step,Fs);
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GrVectMapBlotRect(b_actual,vm,_bit,1.0/step);
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b_actual->color=not_rect_dft;
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GrLineRect4(b_actual,0,0,R_WIDTH+2*R_BORDER-1,R_HEIGHT+2*R_BORDER-1);
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//Flood fill
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for (y=R_BORDER;y<R_HEIGHT+R_BORDER;y+=step)
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for (x=R_BORDER;x<R_WIDTH+R_BORDER;x+=step)
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if (IsSolidSquare(b_desired,x,y,step,not_rect_dft) && GrPeek(b_actual,x>>step_bits,y>>step_bits)==rect_dft) {
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Bts(body,bit++); //Show not end of flood-fill list
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yy=y; xx=x;
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for (k=0;k<4;k++) {
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yy2=yy;
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while (yy2<R_HEIGHT+R_BORDER-1 &&
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IsSolidSquare(b_desired,xx,yy2,step,not_rect_dft) && GrPeek(b_actual,xx>>step_bits,yy2>>step_bits)==rect_dft)
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yy2++;
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while (yy>R_BORDER &&
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IsSolidSquare(b_desired,xx,yy,step,not_rect_dft) && GrPeek(b_actual,xx>>step_bits,yy>>step_bits)==rect_dft)
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yy--;
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yy1=yy+yy2;
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yy=yy1/2;
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xx2=xx;
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while (xx2<R_WIDTH+R_BORDER-1 &&
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IsSolidSquare(b_desired,xx2,yy,step,not_rect_dft) && GrPeek(b_actual,xx2>>step_bits,yy>>step_bits)==rect_dft)
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xx2++;
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while (xx>R_BORDER &&
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IsSolidSquare(b_desired,xx,yy,step,not_rect_dft) && GrPeek(b_actual,xx>>step_bits,yy>>step_bits)==rect_dft)
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xx--;
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xx1=xx+xx2;
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xx=xx1/2;
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}
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GrFloodFill(b_actual,xx>>step_bits,yy>>step_bits);
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BFieldOrU32(body,bit,xx1); //Flood fill X-coordinate in rect
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bit+=R_BITS+1;
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BFieldOrU32(body,bit,yy1); //Flood fill Y-coordinate in rect
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bit+=R_BITS+1;
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}
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DCDel(b_actual);
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Btr(body,bit); //Temp end of flood-fill list
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}
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bit++; //End of flood-fill list
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}
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DCDel(b_desired);
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DCDel(b_edge);
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DCDel(b_link_check);
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if (_max_poly_line_cnt_bits) *_max_poly_line_cnt_bits=max_poly_line_cnt_bits;
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return bit-_bit;
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}
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#define TEMP_BODY_SIZE 0x10000
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public CGrVectMap *DC2VectMap(CDC *dc,CTask *mem_task=NULL,I64 *_size=NULL)
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{ //Currently does not convert outer 1 pixel border
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I64 i,j,k,cnt,size,
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w=(dc->width-R_BORDER*2+R_WIDTH-1)/R_WIDTH,
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h=(dc->height-R_BORDER*2+R_HEIGHT-1)/R_HEIGHT,
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rect_cnt=w*h,poly_line_cnt_bits=12,max_poly_line_cnt_bits=3;
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U32 *rect_start_bits;
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U8 *body;
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CGrVectMap *result,tempv;
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body=MAlloc(TEMP_BODY_SIZE);
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|
||||
//Pass 1: Get max_poly_line_cnt_bits
|
||||
for (i=0;i<h;i++)
|
||||
for (j=0;j<w;j++) {
|
||||
MemSet(&tempv,0,sizeof(CGrVectMap));
|
||||
MemSet(body,0,TEMP_BODY_SIZE);
|
||||
tempv.width =dc->width-R_BORDER*2;
|
||||
tempv.height=dc->height-R_BORDER*2;
|
||||
tempv.body=body;
|
||||
tempv.rect_cnt=rect_cnt;
|
||||
tempv.r_bits=R_BITS;
|
||||
tempv.poly_line_cnt_bits=poly_line_cnt_bits;
|
||||
GrVectizeRect(dc,R_BORDER+j*R_WIDTH,R_BORDER+i*R_HEIGHT,&tempv,0,poly_line_cnt_bits,&max_poly_line_cnt_bits);
|
||||
}
|
||||
|
||||
//Pass 2: Get cnt
|
||||
poly_line_cnt_bits=max_poly_line_cnt_bits;
|
||||
cnt=0;
|
||||
for (i=0;i<h;i++)
|
||||
for (j=0;j<w;j++) {
|
||||
MemSet(&tempv,0,sizeof(CGrVectMap));
|
||||
MemSet(body,0,TEMP_BODY_SIZE);
|
||||
tempv.width =dc->width-R_BORDER*2;
|
||||
tempv.height=dc->height-R_BORDER*2;
|
||||
tempv.body=body;
|
||||
tempv.rect_cnt=rect_cnt;
|
||||
tempv.r_bits=R_BITS;
|
||||
tempv.poly_line_cnt_bits=poly_line_cnt_bits;
|
||||
cnt+=GrVectizeRect(dc,R_BORDER+j*R_WIDTH,R_BORDER+i*R_HEIGHT,&tempv,0,poly_line_cnt_bits,NULL);
|
||||
}
|
||||
Free(body);
|
||||
|
||||
//Pass 3
|
||||
size=(cnt+7)/8;
|
||||
result=CAlloc(sizeof(CGrVectMap),mem_task);
|
||||
result->body=CAlloc(size,mem_task);
|
||||
rect_start_bits=MAlloc((rect_cnt+1)*sizeof(U32),mem_task);
|
||||
result->width =dc->width-R_BORDER*2;
|
||||
result->height=dc->height-R_BORDER*2;
|
||||
result->rect_cnt=rect_cnt;
|
||||
result->r_bits=R_BITS;
|
||||
result->poly_line_cnt_bits=poly_line_cnt_bits;
|
||||
result->rect_start_bits=rect_start_bits;
|
||||
k=0;
|
||||
cnt=0;
|
||||
for (i=0;i<h;i++)
|
||||
for (j=0;j<w;j++) {
|
||||
rect_start_bits[k++]=cnt;
|
||||
cnt+=GrVectizeRect(dc,R_BORDER+j*R_WIDTH,R_BORDER+i*R_HEIGHT,result,cnt,poly_line_cnt_bits,NULL);
|
||||
}
|
||||
rect_start_bits[k]=cnt;
|
||||
|
||||
if (_size) *_size=size;
|
||||
return result;
|
||||
}
|
||||
|
||||
public U0 GrVectMapDel(CGrVectMap *vm)
|
||||
{
|
||||
Free(vm->rect_start_bits);
|
||||
Free(vm->body);
|
||||
Free(vm);
|
||||
}
|
||||
|
||||
U32 *GrVectMapRectStartBits(CGrVectMap *vm,CTask *mem_task=NULL)
|
||||
{
|
||||
I64 k=0,bit=0;
|
||||
U8 *body=vm->body;
|
||||
U32 *result=MAlloc((vm->rect_cnt+1)*sizeof(U32),mem_task);
|
||||
for (k=0;k<vm->rect_cnt;k++) {
|
||||
result[k]=bit++;
|
||||
while (Bt(body,bit++)) {
|
||||
bit+=2*R_BITS;
|
||||
bit+=vm->poly_line_cnt_bits+3*BFieldExtU32(body,bit,vm->poly_line_cnt_bits);
|
||||
}
|
||||
while (Bt(body,bit++))
|
||||
bit+=2*(R_BITS+1);
|
||||
}
|
||||
result[k]=bit;
|
||||
return result;
|
||||
}
|
||||
Reference in new issue
Block a user