Function zoomMoveForPolygons

src/plots/polar/polar.js:1017–1039

(dx, dy)

    }

    function zoomMoveForPolygons(dx, dy) {
        var x1 = x0 + dx;
        var y1 = y0 + dy;
        var a0 = xy2a(x0, y0);
        var a1 = xy2a(x1, y1);
        var vangles0 = findEnclosingVertexAngles(a0, vangles);
        var vangles1 = findEnclosingVertexAngles(a1, vangles);
        var rr0 = findPolygonRadius(x0, y0, vangles0[0], vangles0[1]);
        var rr1 = Math.min(findPolygonRadius(x1, y1, vangles1[0], vangles1[1]), radius);
        var path1;
        var cpath;

        if(clampAndSetR0R1(rr0, rr1)) {
            path1 = path0 + _this.pathSector(r1);
            if(r0) path1 += _this.pathSector(r0);
            // keep 'starting' angle here too
            cpath = [
                pathCornerForPolygons(r0, vangles0[0], vangles0[1]),
                pathCornerForPolygons(r1, vangles0[0], vangles0[1])
            ].join(' ');
        }
        applyZoomMove(path1, cpath);
    }

    function zoomDone() {
        dragBox.removeZoombox(gd);