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Mercator projection works now; fixed equidistant/equiarea on sphere
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Zeno Rogue
parent
a3d4bfdd7d
commit
96243d143f
@ -554,11 +554,26 @@ namespace conformal {
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dialog::addBoolItem(XLAT("include history"), (includeHistory), 'i');
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bool notconformal = (pmodel >= 5 && pmodel <= 6) || abs(vid.alpha-1) > 1e-3;
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bool notconformal0 = (pmodel >= 5 && pmodel <= 6);
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bool notconformal = notconformal0 || abs(vid.alpha-1) > 1e-3;
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dialog::addSelItem(notconformal ? XLAT("model used (not conformal!)") : XLAT("model used"), XLAT(modelnames[pmodel]), 'm');
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dialog::addSelItem(notconformal ? XLAT("model used (not conformal!)") : XLAT("model used"),
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XLAT(
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pmodel == mdBand && sphere ? "Mercator" :
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pmodel == mdHalfplane && euclid ? "inversion" :
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modelnames[pmodel]), 'm');
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dialog::addSelItem(XLAT("rotation"), directions[pmodel][rotation&3], 'r');
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if(pmodel == mdBand && sphere)
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dialog::addSelItem(XLAT("scale factor"), fts(vid.scale), 'z');
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if(abs(vid.alpha-1) > 1e-3 && pmodel != mdBall && pmodel != mdHyperboloid) {
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dialog::addBreak(50);
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dialog::addInfo("NOTE: this works 'correctly' only if the Poincaré model/stereographic projection is used.");
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dialog::addBreak(50);
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dialog::addBoolItem("Switch", false, '6');
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}
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if(pmodel == 4) {
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dialog::addSelItem(XLAT("coefficient"),
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fts4(polygonal::coefr[polygonal::coefid]), 'x');
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@ -600,7 +615,11 @@ namespace conformal {
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void handleKeyC(int sym, int uni) {
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dialog::handleNavigation(sym, uni);
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if(uni == 'e') {
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if(uni == '6')
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vid.alpha = 1, vid.scale = 1;
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else if(uni == 'z')
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editScale();
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else if(uni == 'e') {
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if(on) clear();
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else {
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if(canmove && !cheater) {
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@ -617,9 +636,13 @@ namespace conformal {
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switchagain: {
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pmodel = eModel((pmodel + (shiftmul > 0 ? 1 : -1) + MODELCOUNT) % MODELCOUNT);
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if(sphere)
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if(pmodel == mdHalfplane || pmodel == mdBand || pmodel == mdEquidistant || pmodel == mdEquiarea)
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goto switchagain;
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if(pmodel != mdEquidistant && pmodel != mdDisk && pmodel != mdEquiarea && pmodel != mdPolynomial && pmodel != mdHyperboloid) {
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if(sphere && pmodel != mdBand)
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goto switchagain;
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if(euclid && pmodel != mdHalfplane && pmodel != mdBall)
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goto switchagain;
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}
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}
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polygonal::solve();
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/* if(pmodel && vid.usingGL) {
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211
polygons.cpp
211
polygons.cpp
@ -388,6 +388,89 @@ double linewidthat(const hyperpoint& h, double minwidth) {
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}
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return vid.linewidth;
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}
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// -radius to +3radius
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int mercator_coord;
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int mercator_loop_min = 0, mercator_loop_max = 0;
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void fixMercator() {
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ld period = 4 * vid.radius;
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ld hperiod = period / 2;
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mercator_coord = 1;
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ld cmin = -vid.xcenter, cmax = vid.xres - vid.xcenter, dmin = -vid.ycenter, dmax = vid.yres - vid.ycenter;
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if(mercator_coord)
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swap(cmin, dmin), swap(cmax, dmax);
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for(int i = 0; i<qglcoords; i++) {
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while(glcoords[0][mercator_coord] < hperiod) glcoords[0][mercator_coord] += period;
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while(glcoords[0][mercator_coord] > hperiod) glcoords[0][mercator_coord] -= period;
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}
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ld first = glcoords[0][mercator_coord];
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ld next = first;
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ld mincoord = first, maxcoord = first;
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for(int i = 0; i<qglcoords; i++) {
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while(glcoords[i][mercator_coord] < next - hperiod)
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glcoords[i][mercator_coord] += period;
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while(glcoords[i][mercator_coord] > next + hperiod)
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glcoords[i][mercator_coord] -= period;
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next = glcoords[i][mercator_coord];
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mincoord = min<ld>(mincoord, glcoords[i][mercator_coord]);
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maxcoord = max<ld>(maxcoord, glcoords[i][mercator_coord]);
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}
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ld last = first;
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while(last < next - hperiod) last += period;
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while(last > next + hperiod) last -= period;
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if(first == last) {
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while(mincoord > cmin)
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mercator_loop_min--, mincoord -= period;
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while(maxcoord < cmax)
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mercator_loop_max++, maxcoord += period;
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}
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else {
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if(last < first) {
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reverse(glcoords, glcoords+qglcoords);
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swap(first, last);
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}
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while(maxcoord > cmin) {
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for(int i=0; i<qglcoords; i++) glcoords[i][mercator_coord] -= period;
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first -= period; last -= period;
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mincoord -= period; maxcoord -= period;
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}
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int base = qglcoords;
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int minto = mincoord;
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while(minto < cmax) {
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for(int i=0; i<base; i++) {
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for(int c=0; c<3; c++)
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glcoords[qglcoords][c] = glcoords[qglcoords-base][c];
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glcoords[qglcoords][mercator_coord] += period;
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qglcoords++;
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}
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minto += period;
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}
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for(int r=0; r<3; r++)
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glcoords[qglcoords][r] = glcoords[qglcoords-1][r];
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qglcoords++;
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for(int r=0; r<3; r++)
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glcoords[qglcoords][r] = glcoords[0][r];
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qglcoords++;
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for(int u=1; u<=2; u++) {
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auto& v = glcoords[qglcoords-u][1-mercator_coord];
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v = v < 0 ? dmin : dmax;
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}
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/* printf("cycling %d -> %d\n", base, qglcoords);
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for(int a=0; a<qglcoords; a++)
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printf("[%3d] %10.5lf %10.5lf\n", a, glcoords[a][0], glcoords[a][1]); */
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}
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}
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void drawpolyline(polytodraw& p) {
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auto pp = p.u.poly;
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@ -418,19 +501,20 @@ void drawpolyline(polytodraw& p) {
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addpoly(pp.V, pp.tab, pp.cnt);
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mercator_loop_min = mercator_loop_max = 0;
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if(sphere && pmodel == mdBand)
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fixMercator();
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int poly_limit = max(vid.xres, vid.yres) * 2;
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if(poly_flags & POLY_BEHIND) return;
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for(int i=0; i<qglcoords; i++) {
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if(abs(glcoords[i][0]) > poly_limit || abs(glcoords[i][1]) > poly_limit)
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return; // too large!
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}
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if(sphere && vid.alphax > 1) {
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if(!hiliteclick && !(poly_flags & POLY_INFRONT)) return;
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}
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if(spherespecial > 0 && !(poly_flags & POLY_ISSIDE)) {
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if((spherespecial > 0 || pmodel == mdEquidistant || pmodel == mdEquiarea) && !(poly_flags & POLY_ISSIDE)) {
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double rarea = 0;
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for(int i=0; i<qglcoords-1; i++)
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rarea += glcoords[i][0] * glcoords[i+1][1] - glcoords[i][1] * glcoords[i+1][0];
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@ -446,60 +530,75 @@ void drawpolyline(polytodraw& p) {
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}
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else poly_flags &=~ POLY_INVERSE;
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#if CAP_GL
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if(vid.usingGL) {
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// if(pmodel == 0) for(int i=0; i<qglcoords; i++) glcoords[i][2] = vid.scrdist;
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activateGlcoords();
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gldraw(3, Id, 0, qglcoords, p.col, pp.outline, poly_flags);
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return;
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if(sphere && vid.alphax > 1) {
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if(!hiliteclick && !(poly_flags & POLY_INFRONT)) return;
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}
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#endif
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#if CAP_SVG==1
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if(svg::in) {
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coords_to_poly();
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int col = p.col;
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if(poly_flags & POLY_INVERSE) col = 0;
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svg::polygon(polyx, polyy, polyi, col, pp.outline, pp.minwidth);
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return;
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}
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#endif
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coords_to_poly();
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#if CAP_XGD==1
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gdpush(1); gdpush(p.col); gdpush(pp.outline); gdpush(polyi);
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for(int i=0; i<polyi; i++) gdpush(polyx[i]), gdpush(polyy[i]);
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#elif CAP_SDLGFX==1
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if(poly_flags & POLY_INVERSE) {
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int i = polyi;
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polyx[i] = 0; polyy[i] = 0; i++;
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polyx[i] = vid.xres; polyy[i] = 0; i++;
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polyx[i] = vid.xres; polyy[i] = vid.yres; i++;
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polyx[i] = 0; polyy[i] = vid.yres; i++;
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polyx[i] = 0; polyy[i] = 0; i++;
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filledPolygonColorI(s, polyx, polyy, polyi+5, p.col);
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}
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else
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filledPolygonColorI(s, polyx, polyy, polyi, p.col);
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if(vid.goteyes) filledPolygonColorI(aux, polyxr, polyy, polyi, p.col);
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((vid.antialias & AA_NOGL) ?aapolylineColor:polylineColor)(s, polyx, polyy, polyi, pp.outline);
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if(vid.goteyes) aapolylineColor(aux, polyxr, polyy, polyi, pp.outline);
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if(vid.xres >= 2000 || fatborder) {
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int xmi = 3000, xma = -3000;
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for(int t=0; t<polyi; t++) xmi = min(xmi, polyx[t]), xma = max(xma, polyx[t]);
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if(xma > xmi + 20) for(int x=-1; x<2; x++) for(int y=-1; y<=2; y++) if(x*x+y*y == 1) {
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for(int t=0; t<polyi; t++) polyx[t] += x, polyy[t] += y;
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aapolylineColor(s, polyx, polyy, polyi, pp.outline);
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for(int t=0; t<polyi; t++) polyx[t] -= x, polyy[t] -= y;
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int lastl = 0;
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for(int l=mercator_loop_min; l <= mercator_loop_max; l++) {
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if(l || lastl) {
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for(int i=0; i<qglcoords; i++)
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glcoords[i][mercator_coord] += vid.radius * 4 * (l - lastl);
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lastl = l;
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}
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#if CAP_GL
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if(vid.usingGL) {
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// if(pmodel == 0) for(int i=0; i<qglcoords; i++) glcoords[i][2] = vid.scrdist;
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activateGlcoords();
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gldraw(3, Id, 0, qglcoords, p.col, pp.outline, poly_flags);
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continue;
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}
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#endif
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#if CAP_SVG==1
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if(svg::in) {
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coords_to_poly();
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int col = p.col;
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if(poly_flags & POLY_INVERSE) col = 0;
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svg::polygon(polyx, polyy, polyi, col, pp.outline, pp.minwidth);
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continue;
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}
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#endif
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coords_to_poly();
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#if CAP_XGD==1
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gdpush(1); gdpush(p.col); gdpush(pp.outline); gdpush(polyi);
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for(int i=0; i<polyi; i++) gdpush(polyx[i]), gdpush(polyy[i]);
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#elif CAP_SDLGFX==1
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if(poly_flags & POLY_INVERSE) {
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int i = polyi;
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polyx[i] = 0; polyy[i] = 0; i++;
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polyx[i] = vid.xres; polyy[i] = 0; i++;
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polyx[i] = vid.xres; polyy[i] = vid.yres; i++;
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polyx[i] = 0; polyy[i] = vid.yres; i++;
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polyx[i] = 0; polyy[i] = 0; i++;
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filledPolygonColorI(s, polyx, polyy, polyi+5, p.col);
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}
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else
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filledPolygonColorI(s, polyx, polyy, polyi, p.col);
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if(vid.goteyes) filledPolygonColorI(aux, polyxr, polyy, polyi, p.col);
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((vid.antialias & AA_NOGL) ?aapolylineColor:polylineColor)(s, polyx, polyy, polyi, pp.outline);
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if(vid.goteyes) aapolylineColor(aux, polyxr, polyy, polyi, pp.outline);
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if(vid.xres >= 2000 || fatborder) {
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int xmi = 3000, xma = -3000;
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for(int t=0; t<polyi; t++) xmi = min(xmi, polyx[t]), xma = max(xma, polyx[t]);
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if(xma > xmi + 20) for(int x=-1; x<2; x++) for(int y=-1; y<=2; y++) if(x*x+y*y == 1) {
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for(int t=0; t<polyi; t++) polyx[t] += x, polyy[t] += y;
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aapolylineColor(s, polyx, polyy, polyi, pp.outline);
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for(int t=0; t<polyi; t++) polyx[t] -= x, polyy[t] -= y;
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}
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}
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#endif
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}
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#endif
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}
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vector<float> prettylinepoints;
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