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Code Issues Releases Wiki Activity

better algorithm for drawing Euclidean projections

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Zeno Rogue 2018-11-10 09:42:35 +01:00
parent cf52faa484
commit 6c8661b484
1 changed files with 24 additions and 52 deletions
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58
hypgraph.cpp
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@ -906,61 +906,33 @@ void drawEuclidean() {
// mindx, mindy, maxdx, maxdy);
int pvec = cellwalker_to_vec(centerover);
int minsx = mindx-1, maxsx=maxdx+1, minsy=mindy-1, maxsy=maxdy+1;
mindx=maxdx=mindy=maxdy=0;
set<int> visited = {0};
vector<int> dfs = {0};
transmatrix View0 = View;
ld centerd = matrixnorm(View);
auto View0 = View;
ld cellrad = vid.radius / (1 + vid.alpha);
ld centerd = matrixnorm(View0);
for(int dx=minsx; dx<=maxsx; dx++)
for(int dy=minsy; dy<=maxsy; dy++) {
torusconfig::torus_cx = dx;
torusconfig::torus_cy = dy;
cellwalker cw = vec_to_cellwalker(pvec + euclid_getvec(dx, dy));
transmatrix Mat = eumove(dx,dy);
for(int i=0; i<isize(dfs); i++) {
int at = dfs[i];
cellwalker cw = vec_to_cellwalker(pvec + at);
if(!cw.at) continue;
Mat = View0 * Mat;
auto p = vec_to_pair(at);
transmatrix Mat = View0 * eumove(p.first,p.second);
if(true) {
ld locald = matrixnorm(Mat);
if(locald < centerd) centerd = locald, centerover = cw, View = View0 * eumove(dx, dy);
if(locald < centerd) centerd = locald, centerover = cw, View = Mat;
}
// Mat[0][0] = -1;
// Mat[1][1] = -1;
// Mat[2][0] = x*x/10;
// Mat[2][1] = y*y/10;
// Mat = Mat * xpush(x-30) * ypush(y-30);
if(vid.use_smart_range) {
if(in_smart_range(Mat)) {
if(i < 30 || in_smart_range(Mat)) {
if(vid.use_smart_range == 2) setdist(cw.at, 7, cw.at);
if(dx < mindx) mindx = dx;
if(dy < mindy) mindy = dy;
if(dx > maxdx) maxdx = dx;
if(dy > maxdy) maxdy = dy;
if(dodrawcell(cw.at))
drawcell(cw.at, cw.mirrored ? Mat * Mirror : Mat, cw.spin, cw.mirrored);
}
}
else {
int cx, cy, shift;
getcoord0(tC0(Mat), cx, cy, shift);
if(cx >= 0 && cy >= 0 && cx < vid.xres && cy < vid.yres) {
if(dx < mindx) mindx = dx;
if(dy < mindy) mindy = dy;
if(dx > maxdx) maxdx = dx;
if(dy > maxdy) maxdy = dy;
}
if(cx >= -cellrad && cy >= -cellrad && cx < vid.xres+cellrad && cy < vid.yres+cellrad)
if(dodrawcell(cw.at)) {
drawcell(cw.at, cw.mirrored ? Mat * Mirror : Mat, cw.spin, cw.mirrored);
for(int x=-1; x<=+1; x++)
for(int y=-1; y<=+1; y++) {
auto p = at + pair_to_vec(x, y);
if(!visited.count(p)) visited.insert(p), dfs.push_back(p);
}
}
}