1c5fd62e43
This commit aims to simplify the computation of zoom and resolution in the View class. Previously zoom levels and resolution computations were mixed in different places, ie resolution constraints, initial values, etc. Now the View class only has the `getZoomForResolution` and `getResolutionForZoom` methods to convert from one system to another. Other than that, most computations use the resolution system internally. The `constrainResolution` method also does not exist anymore, and is replaced by `getValidResolution` and `getValidZoomLevel` public methods.
242 lines
9.9 KiB
JavaScript
242 lines
9.9 KiB
JavaScript
import {createSnapToResolutions, createSnapToPower} from '../../../src/ol/resolutionconstraint.js';
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describe('ol.resolutionconstraint', function() {
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describe('SnapToResolution', function() {
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let resolutionConstraint;
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beforeEach(function() {
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resolutionConstraint = createSnapToResolutions(
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[1000, 500, 250, 100]);
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});
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describe('direction 0', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1000, 0)).to.eql(1000);
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expect(resolutionConstraint(500, 0)).to.eql(500);
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expect(resolutionConstraint(250, 0)).to.eql(250);
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expect(resolutionConstraint(100, 0)).to.eql(100);
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});
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});
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describe('direction 1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1000, 1)).to.eql(1000);
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expect(resolutionConstraint(500, 1)).to.eql(500);
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expect(resolutionConstraint(250, 1)).to.eql(250);
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expect(resolutionConstraint(100, 1)).to.eql(100);
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});
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});
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describe('direction -1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1000, -1)).to.eql(1000);
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expect(resolutionConstraint(500, -1)).to.eql(500);
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expect(resolutionConstraint(250, -1)).to.eql(250);
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expect(resolutionConstraint(100, -1)).to.eql(100);
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});
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});
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});
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describe('SnapToResolutions Nearest', function() {
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let resolutionConstraint;
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beforeEach(function() {
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resolutionConstraint =
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createSnapToResolutions(
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[1000, 500, 250, 100]);
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});
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describe('direction 0', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1050, 0)).to.eql(1000);
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expect(resolutionConstraint(950, 0)).to.eql(1000);
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expect(resolutionConstraint(550, 0)).to.eql(500);
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expect(resolutionConstraint(400, 0)).to.eql(500);
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expect(resolutionConstraint(300, 0)).to.eql(250);
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expect(resolutionConstraint(200, 0)).to.eql(250);
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expect(resolutionConstraint(150, 0)).to.eql(100);
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expect(resolutionConstraint(50, 0)).to.eql(100);
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});
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});
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describe('direction 1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1050, 1)).to.eql(1000);
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expect(resolutionConstraint(950, 1)).to.eql(1000);
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expect(resolutionConstraint(550, 1)).to.eql(1000);
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expect(resolutionConstraint(450, 1)).to.eql(500);
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expect(resolutionConstraint(300, 1)).to.eql(500);
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expect(resolutionConstraint(200, 1)).to.eql(250);
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expect(resolutionConstraint(150, 1)).to.eql(250);
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expect(resolutionConstraint(50, 1)).to.eql(100);
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});
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});
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describe('direction -1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1050, -1)).to.eql(1000);
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expect(resolutionConstraint(950, -1)).to.eql(500);
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expect(resolutionConstraint(550, -1)).to.eql(500);
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expect(resolutionConstraint(450, -1)).to.eql(250);
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expect(resolutionConstraint(300, -1)).to.eql(250);
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expect(resolutionConstraint(200, -1)).to.eql(100);
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expect(resolutionConstraint(150, -1)).to.eql(100);
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expect(resolutionConstraint(50, -1)).to.eql(100);
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});
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});
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});
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describe('createSnapToPower', function() {
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let resolutionConstraint;
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beforeEach(function() {
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resolutionConstraint =
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createSnapToPower(2, 1024, 1);
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});
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describe('delta 0', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1024, 0)).to.eql(1024);
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expect(resolutionConstraint(512, 0)).to.eql(512);
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expect(resolutionConstraint(256, 0)).to.eql(256);
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expect(resolutionConstraint(128, 0)).to.eql(128);
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expect(resolutionConstraint(64, 0)).to.eql(64);
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expect(resolutionConstraint(32, 0)).to.eql(32);
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expect(resolutionConstraint(16, 0)).to.eql(16);
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expect(resolutionConstraint(8, 0)).to.eql(8);
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expect(resolutionConstraint(4, 0)).to.eql(4);
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expect(resolutionConstraint(2, 0)).to.eql(2);
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expect(resolutionConstraint(1, 0)).to.eql(1);
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});
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});
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describe('direction 1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1024, 1)).to.eql(1024);
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expect(resolutionConstraint(512, 1)).to.eql(512);
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expect(resolutionConstraint(256, 1)).to.eql(256);
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expect(resolutionConstraint(128, 1)).to.eql(128);
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expect(resolutionConstraint(64, 1)).to.eql(64);
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expect(resolutionConstraint(32, 1)).to.eql(32);
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expect(resolutionConstraint(16, 1)).to.eql(16);
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expect(resolutionConstraint(8, 1)).to.eql(8);
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expect(resolutionConstraint(4, 1)).to.eql(4);
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expect(resolutionConstraint(2, 1)).to.eql(2);
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expect(resolutionConstraint(1, 1)).to.eql(1);
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});
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});
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describe('direction -1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1024, -1)).to.eql(1024);
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expect(resolutionConstraint(512, -1)).to.eql(512);
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expect(resolutionConstraint(256, -1)).to.eql(256);
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expect(resolutionConstraint(128, -1)).to.eql(128);
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expect(resolutionConstraint(64, -1)).to.eql(64);
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expect(resolutionConstraint(32, -1)).to.eql(32);
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expect(resolutionConstraint(16, -1)).to.eql(16);
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expect(resolutionConstraint(8, -1)).to.eql(8);
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expect(resolutionConstraint(4, -1)).to.eql(4);
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expect(resolutionConstraint(2, -1)).to.eql(2);
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expect(resolutionConstraint(1, -1)).to.eql(1);
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});
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});
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});
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describe('createSnapToPower Nearest', function() {
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let resolutionConstraint;
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beforeEach(function() {
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resolutionConstraint =
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createSnapToPower(2, 1024, 1);
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});
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describe('direction 0', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1050, 0)).to.eql(1024);
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expect(resolutionConstraint(9050, 0)).to.eql(1024);
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expect(resolutionConstraint(550, 0)).to.eql(512);
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expect(resolutionConstraint(450, 0)).to.eql(512);
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expect(resolutionConstraint(300, 0)).to.eql(256);
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expect(resolutionConstraint(250, 0)).to.eql(256);
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expect(resolutionConstraint(150, 0)).to.eql(128);
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expect(resolutionConstraint(100, 0)).to.eql(128);
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expect(resolutionConstraint(75, 0)).to.eql(64);
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expect(resolutionConstraint(50, 0)).to.eql(64);
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expect(resolutionConstraint(40, 0)).to.eql(32);
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expect(resolutionConstraint(30, 0)).to.eql(32);
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expect(resolutionConstraint(20, 0)).to.eql(16);
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expect(resolutionConstraint(12, 0)).to.eql(16);
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expect(resolutionConstraint(9, 0)).to.eql(8);
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expect(resolutionConstraint(7, 0)).to.eql(8);
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expect(resolutionConstraint(5, 0)).to.eql(4);
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expect(resolutionConstraint(3.5, 0)).to.eql(4);
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expect(resolutionConstraint(2.1, 0)).to.eql(2);
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expect(resolutionConstraint(1.9, 0)).to.eql(2);
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expect(resolutionConstraint(1.1, 0)).to.eql(1);
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expect(resolutionConstraint(0.9, 0)).to.eql(1);
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});
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});
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describe('direction 1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1050, 1)).to.eql(1024);
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expect(resolutionConstraint(9050, 1)).to.eql(1024);
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expect(resolutionConstraint(550, 1)).to.eql(1024);
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expect(resolutionConstraint(450, 1)).to.eql(512);
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expect(resolutionConstraint(300, 1)).to.eql(512);
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expect(resolutionConstraint(250, 1)).to.eql(256);
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expect(resolutionConstraint(150, 1)).to.eql(256);
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expect(resolutionConstraint(100, 1)).to.eql(128);
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expect(resolutionConstraint(75, 1)).to.eql(128);
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expect(resolutionConstraint(50, 1)).to.eql(64);
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expect(resolutionConstraint(40, 1)).to.eql(64);
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expect(resolutionConstraint(30, 1)).to.eql(32);
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expect(resolutionConstraint(20, 1)).to.eql(32);
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expect(resolutionConstraint(12, 1)).to.eql(16);
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expect(resolutionConstraint(9, 1)).to.eql(16);
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expect(resolutionConstraint(7, 1)).to.eql(8);
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expect(resolutionConstraint(5, 1)).to.eql(8);
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expect(resolutionConstraint(3.5, 1)).to.eql(4);
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expect(resolutionConstraint(2.1, 1)).to.eql(4);
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expect(resolutionConstraint(1.9, 1)).to.eql(2);
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expect(resolutionConstraint(1.1, 1)).to.eql(2);
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expect(resolutionConstraint(0.9, 1)).to.eql(1);
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});
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});
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describe('direction -1', function() {
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it('returns expected resolution value', function() {
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expect(resolutionConstraint(1050, -1)).to.eql(1024);
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expect(resolutionConstraint(9050, -1)).to.eql(1024);
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expect(resolutionConstraint(550, -1)).to.eql(512);
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expect(resolutionConstraint(450, -1)).to.eql(256);
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expect(resolutionConstraint(300, -1)).to.eql(256);
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expect(resolutionConstraint(250, -1)).to.eql(128);
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expect(resolutionConstraint(150, -1)).to.eql(128);
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expect(resolutionConstraint(100, -1)).to.eql(64);
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expect(resolutionConstraint(75, -1)).to.eql(64);
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expect(resolutionConstraint(50, -1)).to.eql(32);
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expect(resolutionConstraint(40, -1)).to.eql(32);
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expect(resolutionConstraint(30, -1)).to.eql(16);
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expect(resolutionConstraint(20, -1)).to.eql(16);
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expect(resolutionConstraint(12, -1)).to.eql(8);
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expect(resolutionConstraint(9, -1)).to.eql(8);
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expect(resolutionConstraint(7, -1)).to.eql(4);
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expect(resolutionConstraint(5, -1)).to.eql(4);
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expect(resolutionConstraint(3.5, -1)).to.eql(2);
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expect(resolutionConstraint(2.1, -1)).to.eql(2);
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expect(resolutionConstraint(1.9, -1)).to.eql(1);
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expect(resolutionConstraint(1.1, -1)).to.eql(1);
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expect(resolutionConstraint(0.9, -1)).to.eql(1);
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});
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});
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});
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});
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