| import {default as geoStream} from "../stream.js"; |
| import boundsStream from "../path/bounds.js"; |
|
|
| function fit(projection, fitBounds, object) { |
| var clip = projection.clipExtent && projection.clipExtent(); |
| projection.scale(150).translate([0, 0]); |
| if (clip != null) projection.clipExtent(null); |
| geoStream(object, projection.stream(boundsStream)); |
| fitBounds(boundsStream.result()); |
| if (clip != null) projection.clipExtent(clip); |
| return projection; |
| } |
|
|
| export function fitExtent(projection, extent, object) { |
| return fit(projection, function(b) { |
| var w = extent[1][0] - extent[0][0], |
| h = extent[1][1] - extent[0][1], |
| k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])), |
| x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2, |
| y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2; |
| projection.scale(150 * k).translate([x, y]); |
| }, object); |
| } |
|
|
| export function fitSize(projection, size, object) { |
| return fitExtent(projection, [[0, 0], size], object); |
| } |
|
|
| export function fitWidth(projection, width, object) { |
| return fit(projection, function(b) { |
| var w = +width, |
| k = w / (b[1][0] - b[0][0]), |
| x = (w - k * (b[1][0] + b[0][0])) / 2, |
| y = -k * b[0][1]; |
| projection.scale(150 * k).translate([x, y]); |
| }, object); |
| } |
|
|
| export function fitHeight(projection, height, object) { |
| return fit(projection, function(b) { |
| var h = +height, |
| k = h / (b[1][1] - b[0][1]), |
| x = -k * b[0][0], |
| y = (h - k * (b[1][1] + b[0][1])) / 2; |
| projection.scale(150 * k).translate([x, y]); |
| }, object); |
| } |
|
|
