viewport-mercator-project - npm Package Compare versions

Comparing version 2.0.1 to 2.1.0

index.js

		@@ -45,2 +45,3 @@ // Copyright (c) 2015 Uber Technologies, Inc.
		var offsetY = opts.height * 0.5 - y;

		function project(lnglat2) {
		@@ -53,2 +54,3 @@ var lamda2 = lnglat2[0] * DEGREES_TO_RADIANS;
		}

		function unproject(xy) {
		@@ -61,5 +63,16 @@ var x2 = xy[0] - offsetX;
		}
		return {project: project, unproject: unproject};

		function contains(lnglat2) {
		var xy = project(lnglat2);
		var x = xy[0];
		var y = xy[1];
		return (
		x >= 0 && x <= opts.width &&
		y >= 0 && y <= opts.height
		);
		}

		return {project: project, unproject: unproject, contains: contains};
		}

		module.exports = ViewportMercator;

package.json

		{
		"name": "viewport-mercator-project",
		"version": "2.0.1",
		"version": "2.1.0",
		"description": "Convert to and from lat/lng and pixels in web mercator at arbitrary floating point zoom levels.",
		@@ -5,0 +5,0 @@ "main": "index.js",

README.md

		@@ -29,2 +29,5 @@ # viewport-mercator-project
		viewport.unproject(pixels); // returns [0, 0]

		// Test if a lnglat is within the viewport
		viewport.contains(lnglat); // true
		````
		@@ -41,3 +44,9 @@

		## Notes on Projection

		The coordinate system of the viewport is defined as a cartesian plane with the origin in the top left,
		where the positive x-axis goes right, and the positive y-axis goes down.

		That is, the top left corner is `[0, 0]` and the bottom right corner is `[width, height]`.

		## Change log
		@@ -44,0 +53,0 @@

test/index.js

		@@ -101,1 +101,30 @@ // Copyright (c) 2015 Uber Technologies, Inc.
		});

		test('contains a given point', function tt(t) {
		var size = 512;
		var viewport = createViewport({
		width: size,
		height: size,
		latitude: 0,
		longitude: 0,
		zoom: 12
		});

		// Center should be in
		t.true(viewport.contains([0, 0]));

		// Test the boundaries are in
		t.true(viewport.contains(viewport.unproject([0, 0])));
		t.true(viewport.contains(viewport.unproject([512, 512])));

		// Outside in either direction is false
		t.false(viewport.contains(viewport.unproject([-1, 256])));
		t.false(viewport.contains(viewport.unproject([256, -1])));
		t.false(viewport.contains(viewport.unproject([256, 513])));
		t.false(viewport.contains(viewport.unproject([513, 256])));

		// Both under and over
		t.false(viewport.contains(viewport.unproject([513, 513])));
		t.false(viewport.contains(viewport.unproject([-1, -1])));
		t.end();
		});

New alerts