645e359cde
Until now, the features of transparent vector layers were rendered using the layer opacity. This caused colors to mix together and the opacities to stack up to an higher value than the expected layer opacity. With this commit, the features are rendered at 100% opacity to an intermediate canvas which ensures colors do not mix up even in the case of features using an array of styles. The intermediate canvas is then composed to the map canvas using the layer opacity. Transparent layers are automatically detected, non-transparent layers are not affected by the change.
OpenLayers
OpenLayers is a high-performance, feature-packed library for creating interactive maps on the web. It can display map tiles, vector data and markers loaded from any source on any web page. OpenLayers has been developed to further the use of geographic information of all kinds. It is completely free, Open Source JavaScript, released under the 2-clause BSD License (also known as the FreeBSD).
Getting Started
- Download the latest release
- Install with npm:
npm install openlayers - Clone the repo:
git clone git@github.com:openlayers/openlayers.git
Supported Browsers
OpenLayers runs on all modern browsers that support HTML5 and ECMAScript 5. This includes Chrome, Firefox, Safari and Edge. For older browsers and platforms like Internet Explorer (down to version 9) and Android 4.x, polyfills for requestAnimationFrame and Element.prototype.classList are required, and using the KML format requires a polyfill for URL.
Documentation
Check out the hosted examples, the workshop or the API documentation.
Bugs
Please use the GitHub issue tracker for all bugs and feature requests. Before creating a new issue, do a quick search to see if the problem has been reported already.
Contributing
Please see our guide on contributing if you're interested in getting involved.
Community
- Need help? Find it on Stack Overflow using the tag 'openlayers'
- Follow @openlayers on Twitter
- Discuss with openlayers users on IRC in
#openlayersatchat.freenode