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View / add support for viewport extent constraint

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This introduces a breaking change:

The `extent` view option now constrains the whole viewport and not just the
view center.
The option `constrainOnlyCenter` was added to keep the previous behaviour.

Constraining the whole viewport and not only the view center means
that the center and resolution constraints must be applied with a knowledge of
the viewport size.
This commit is contained in:
Olivier Guyot
2019-01-14 13:36:20 +01:00
parent e52fab636c
commit 1f379a06a4
8 changed files with 128 additions and 28 deletions
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examples/extent-constrained.html Normal file
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---
layout: example.html
title: Constrained Extent
shortdesc: Example of a view with a constrained extent.
docs: >
This map has a view that is constrained in an extent. This is done using the `extent` view option. Please note that specifying `restrictOnlyCenter: true` would only apply the extent restriction to the view center.
tags: "view, extent, constrain, restrict"
---
<div id="map" class="map"></div>