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| var nad_intr = require('./nad_intr');
| var adjust_lon = require('./adjust_lon');
| module.exports = function(t, val, tb, ct) {
| if (isNaN(t.x)) {
| return val;
| }
| t.x = tb.x + t.x;
| t.y = tb.y - t.y;
| var i = 9,
| tol = 1e-12;
| var dif, del;
| do {
| del = nad_intr(t, ct);
| if (isNaN(del.x)) {
| break;
| }
| dif = {
| "x": t.x - del.x - tb.x,
| "y": t.y + del.y - tb.y
| };
| t.x -= dif.x;
| t.y -= dif.y;
| } while (i-- && Math.abs(dif.x) > tol && Math.abs(dif.y) > tol);
| if (i < 0) {
| return val;
| }
| val.x = adjust_lon(t.x + ct.ll[0]);
| val.y = t.y + ct.ll[1];
| return val;
| };
|
|
