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better algorithm for drawing Euclidean projections
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76
hypgraph.cpp
76
hypgraph.cpp
@ -905,63 +905,35 @@ void drawEuclidean() {
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// printf("centerover = %p player = %p [%d,%d]-[%d,%d]\n", lcenterover, cwt.c,
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// mindx, mindy, maxdx, maxdy);
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int pvec = cellwalker_to_vec(centerover);
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int minsx = mindx-1, maxsx=maxdx+1, minsy=mindy-1, maxsy=maxdy+1;
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mindx=maxdx=mindy=maxdy=0;
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transmatrix View0 = View;
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ld cellrad = vid.radius / (1 + vid.alpha);
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ld centerd = matrixnorm(View0);
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for(int dx=minsx; dx<=maxsx; dx++)
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for(int dy=minsy; dy<=maxsy; dy++) {
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torusconfig::torus_cx = dx;
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torusconfig::torus_cy = dy;
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cellwalker cw = vec_to_cellwalker(pvec + euclid_getvec(dx, dy));
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transmatrix Mat = eumove(dx,dy);
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if(!cw.at) continue;
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set<int> visited = {0};
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vector<int> dfs = {0};
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ld centerd = matrixnorm(View);
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auto View0 = View;
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for(int i=0; i<isize(dfs); i++) {
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int at = dfs[i];
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cellwalker cw = vec_to_cellwalker(pvec + at);
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if(!cw.at) continue;
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auto p = vec_to_pair(at);
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transmatrix Mat = View0 * eumove(p.first,p.second);
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Mat = View0 * Mat;
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if(true) {
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ld locald = matrixnorm(Mat);
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if(locald < centerd) centerd = locald, centerover = cw, View = View0 * eumove(dx, dy);
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if(locald < centerd) centerd = locald, centerover = cw, View = Mat;
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}
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// Mat[0][0] = -1;
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// Mat[1][1] = -1;
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// Mat[2][0] = x*x/10;
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// Mat[2][1] = y*y/10;
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// Mat = Mat * xpush(x-30) * ypush(y-30);
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if(vid.use_smart_range) {
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if(in_smart_range(Mat)) {
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if(vid.use_smart_range == 2) setdist(cw.at, 7, cw.at);
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if(dx < mindx) mindx = dx;
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if(dy < mindy) mindy = dy;
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if(dx > maxdx) maxdx = dx;
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if(dy > maxdy) maxdy = dy;
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if(dodrawcell(cw.at))
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drawcell(cw.at, cw.mirrored ? Mat * Mirror : Mat, cw.spin, cw.mirrored);
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}
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}
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else {
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int cx, cy, shift;
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getcoord0(tC0(Mat), cx, cy, shift);
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if(cx >= 0 && cy >= 0 && cx < vid.xres && cy < vid.yres) {
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if(dx < mindx) mindx = dx;
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if(dy < mindy) mindy = dy;
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if(dx > maxdx) maxdx = dx;
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if(dy > maxdy) maxdy = dy;
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}
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if(cx >= -cellrad && cy >= -cellrad && cx < vid.xres+cellrad && cy < vid.yres+cellrad)
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if(dodrawcell(cw.at)) {
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drawcell(cw.at, cw.mirrored ? Mat * Mirror : Mat, cw.spin, cw.mirrored);
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}
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if(i < 30 || in_smart_range(Mat)) {
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if(vid.use_smart_range == 2) setdist(cw.at, 7, cw.at);
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if(dodrawcell(cw.at))
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drawcell(cw.at, cw.mirrored ? Mat * Mirror : Mat, cw.spin, cw.mirrored);
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for(int x=-1; x<=+1; x++)
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for(int y=-1; y<=+1; y++) {
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auto p = at + pair_to_vec(x, y);
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if(!visited.count(p)) visited.insert(p), dfs.push_back(p);
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}
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}
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}
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}
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