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View / add a 'smoothResolutionConstraint' options

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When enabled (true by default), the resolution min/max values will be applied with
a smoothing effect for a better user experience.
This commit is contained in:
Olivier Guyot
2019-01-20 20:45:49 +01:00
parent e023c144bb
commit ef6d17d817
6 changed files with 187 additions and 65 deletions
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95
test/spec/ol/resolutionconstraint.test.js
View File

@@ -1,4 +1,5 @@
import {createSnapToResolutions, createSnapToPower} from '../../../src/ol/resolutionconstraint.js';
import {createMinMaxResolution} from '../../../src/ol/resolutionconstraint';
describe('ol.resolutionconstraint', function() {
@@ -238,4 +239,98 @@ describe('ol.resolutionconstraint', function() {
});
});
});
describe('SnapToPower smooth constraint', function() {
describe('snap to power, smooth constraint on', function() {
it('returns expected resolution value', function() {
let resolutionConstraint = createSnapToPower(2, 128, 16, true);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.be.greaterThan(128);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.be.lessThan(150);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.be.greaterThan(128);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.be.lessThan(130);
expect(resolutionConstraint(128, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(16, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.be.greaterThan(15);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.be.lessThan(16);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.be.greaterThan(10);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.be.lessThan(16);
});
});
describe('snap to power, smooth constraint off', function() {
it('returns expected resolution value', function() {
let resolutionConstraint = createSnapToPower(2, 128, 16, false);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(128, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(16, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.eql(16);
});
});
describe('snap to resolutions, smooth constraint on', function() {
it('returns expected resolution value', function() {
let resolutionConstraint = createSnapToResolutions([128, 64, 32, 16], true);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.be.greaterThan(128);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.be.lessThan(150);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.be.greaterThan(128);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.be.lessThan(130);
expect(resolutionConstraint(128, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(16, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.be.greaterThan(15);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.be.lessThan(16);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.be.greaterThan(10);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.be.lessThan(16);
});
});
describe('snap to resolutions, smooth constraint off', function() {
it('returns expected resolution value', function() {
let resolutionConstraint = createSnapToResolutions([128, 64, 32, 16], false);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(128, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(16, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.eql(16);
});
});
describe('min/max, smooth constraint on', function() {
it('returns expected resolution value', function() {
let resolutionConstraint = createMinMaxResolution(128, 16, true);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.be.greaterThan(128);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.be.lessThan(150);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.be.greaterThan(128);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.be.lessThan(130);
expect(resolutionConstraint(128, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(16, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.be.greaterThan(15);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.be.lessThan(16);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.be.greaterThan(10);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.be.lessThan(16);
});
});
describe('min/max, smooth constraint off', function() {
it('returns expected resolution value', function() {
let resolutionConstraint = createMinMaxResolution(128, 16, false);
expect(resolutionConstraint(150, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(130, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(128, 0, [100, 100], true)).to.eql(128);
expect(resolutionConstraint(16, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(15, 0, [100, 100], true)).to.eql(16);
expect(resolutionConstraint(10, 0, [100, 100], true)).to.eql(16);
});
});
});
});