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ol/geom/flat/simplify export

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raiyni
2018-02-13 00:08:20 -06:00
parent 78b418ba9d
commit 837490b4a4
8 changed files with 83 additions and 85 deletions
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82
test/spec/ol/geom/flat/simplify.test.js
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@@ -1,4 +1,4 @@
import _ol_geom_flat_simplify_ from '../../../../../src/ol/geom/flat/simplify.js';
import {douglasPeucker, quantize, radialDistance, simplifyLineString} from '../../../../../src/ol/geom/flat/simplify.js';
describe('ol.geom.flat.simplify', function() {
@@ -81,31 +81,31 @@ describe('ol.geom.flat.simplify', function() {
866.36, 480.77
];
describe('ol.geom.flat.simplify.lineString', function() {
describe('ol.geom.flat.simplify.simplifyLineString', function() {
it('works with empty line strings', function() {
expect(_ol_geom_flat_simplify_.lineString([], 0, 0, 2, 1, true)).to.
expect(simplifyLineString([], 0, 0, 2, 1, true)).to.
eql([]);
expect(_ol_geom_flat_simplify_.lineString([], 0, 0, 2, 1, false)).to.
expect(simplifyLineString([], 0, 0, 2, 1, false)).to.
eql([]);
});
it('works with a line string with a single point', function() {
expect(_ol_geom_flat_simplify_.lineString([1, 2], 0, 2, 2, 1, true)).to.
expect(simplifyLineString([1, 2], 0, 2, 2, 1, true)).to.
eql([1, 2]);
expect(_ol_geom_flat_simplify_.lineString([1, 2], 0, 2, 2, 1, false)).to.
expect(simplifyLineString([1, 2], 0, 2, 2, 1, false)).to.
eql([1, 2]);
});
it('returns the expected result with low quality', function() {
const result = _ol_geom_flat_simplify_.lineString(
const result = simplifyLineString(
flatCoordinates, 0, flatCoordinates.length, 2, 25, false);
expect(result.length).to.be(simplifiedFlatCoordinates.length);
expect(result).to.eql(simplifiedFlatCoordinates);
});
it('returns the expected result with high quality', function() {
const result = _ol_geom_flat_simplify_.lineString(
const result = simplifyLineString(
flatCoordinates, 0, flatCoordinates.length, 2, 25, true);
expect(result.length).to.be(simplifiedHighQualityFlatCoordinates.length);
expect(result).to.eql(simplifiedHighQualityFlatCoordinates);
@@ -121,63 +121,63 @@ describe('ol.geom.flat.simplify', function() {
});
it('works with empty line strings', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[], 0, 0, 2, 1, dest, 0)).to.be(0);
expect(dest).to.eql([]);
});
it('works with a line string with a single point', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[1, 2], 0, 2, 2, 1, dest, 0)).to.be(2);
expect(dest).to.eql([1, 2]);
});
it('works with a line string with two points', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[1, 2, 3, 4], 0, 4, 2, 1, dest, 0)).to.be(4);
expect(dest).to.eql([1, 2, 3, 4]);
});
it('works when the points are widely spaced', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[0, 0, 1, 0, 2, 0, 3, 0], 0, 8, 2, 0.5, dest, 0)).to.be(8);
expect(dest).to.eql([0, 0, 1, 0, 2, 0, 3, 0]);
});
it('works when the spacing matches the tolerance', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[0, 0, 1, 0, 2, 0, 3, 0], 0, 8, 2, 1, dest, 0)).to.be(6);
expect(dest).to.eql([0, 0, 2, 0, 3, 0]);
});
it('works when the points are closely spaced', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[0, 0, 1, 0, 2, 0, 3, 0], 0, 8, 2, 1.5, dest, 0)).to.be(6);
expect(dest).to.eql([0, 0, 2, 0, 3, 0]);
});
it('works when the line oscillates with widely spaced points', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1], 0, 12, 2, 1, dest, 0)).
to.be(12);
expect(dest).to.eql([0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1]);
});
it('works when the line oscillates with closely spaced points', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1], 0, 12, 2, 2, dest, 0)).to.be(4);
expect(dest).to.eql([0, 0, 1, 1]);
});
it('works when the line oscillates within the tolerance', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
[0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0], 0, 14, 2, 2, dest, 0)).
to.be(2);
expect(dest).to.eql([0, 0]);
});
it('works with real data', function() {
expect(_ol_geom_flat_simplify_.radialDistance(
expect(radialDistance(
flatCoordinates, 0, flatCoordinates.length, 2, 25, dest, 0)).
to.be(simplifiedRadiallyFlatCoordinates.length);
expect(dest).to.eql(simplifiedRadiallyFlatCoordinates);
@@ -193,93 +193,93 @@ describe('ol.geom.flat.simplify', function() {
});
it('works with empty line strings', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[], 0, 0, 2, 1, dest, 0)).to.be(0);
expect(dest).to.eql([]);
});
it('works with a line string with a single point', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[1, 2], 0, 2, 2, 1, dest, 0)).to.be(2);
expect(dest).to.eql([1, 2]);
});
it('works with a line string with two points', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[1, 2, 3, 4], 0, 4, 2, 1, dest, 0)).to.be(4);
expect(dest).to.eql([1, 2, 3, 4]);
});
it('works when the points are widely spaced', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 0, 2, 0, 3, 0], 0, 8, 2, 0.5, dest, 0)).to.be(4);
expect(dest).to.eql([0, 0, 3, 0]);
});
it('works when the spacing matches the tolerance', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 0, 2, 0, 3, 0], 0, 8, 2, 1, dest, 0)).to.be(4);
expect(dest).to.eql([0, 0, 3, 0]);
});
it('works when the points are closely spaced', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 0, 2, 0, 3, 0], 0, 8, 2, 1.5, dest, 0)).to.be(4);
expect(dest).to.eql([0, 0, 3, 0]);
});
it('does not elimnate points outside the tolerance', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 1, 2, 0], 0, 6, 2, 0.5, dest, 0)).to.be(6);
expect(dest).to.eql([0, 0, 1, 1, 2, 0]);
});
it('does eliminate points within the tolerance', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 1, 2, 0], 0, 6, 2, 2, dest, 0)).to.be(4);
expect(dest).to.eql([0, 0, 2, 0]);
});
it('does not eliminate multiple points outside the tolerance', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 1, 1, -1, 2, 0], 0, 8, 2, 0.5, dest, 0)).to.be(8);
expect(dest).to.eql([0, 0, 1, 1, 1, -1, 2, 0]);
});
it('does eliminate multiple points within the tolerance', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 1, 1, -1, 2, 0], 0, 8, 2, 2, dest, 0)).to.be(4);
expect(dest).to.eql([0, 0, 2, 0]);
});
it('works when the line oscillates with widely spaced points', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1], 0, 12, 2, 1, dest, 0)).to.be(4);
expect(dest).to.eql([0, 0, 1, 1]);
});
it('works when the line oscillates with closely spaced points', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1], 0, 12, 2, 2, dest, 0)).
to.be(4);
expect(dest).to.eql([0, 0, 1, 1]);
});
it('works when the line oscillates within the tolerance', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0], 0, 14, 2, 2, dest, 0)).
to.be(4);
expect(dest).to.eql([0, 0, 0, 0]);
});
it('works on small triangles', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
[3, 0, 4, 1, 5, 2, 5, 0], 0, 8, 2, 1, dest, 0)).to.be(6);
expect(dest).to.eql([3, 0, 5, 2, 5, 0]);
});
it('is the same as high quality simplification', function() {
expect(_ol_geom_flat_simplify_.douglasPeucker(
expect(douglasPeucker(
flatCoordinates, 0, flatCoordinates.length, 2, 25, dest, 0)).
to.be(simplifiedHighQualityFlatCoordinates.length);
expect(dest).to.eql(simplifiedHighQualityFlatCoordinates);
@@ -291,28 +291,28 @@ describe('ol.geom.flat.simplify', function() {
it('handles empty coordinates', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[], 0, 0, 2, 2, simplifiedFlatCoordinates, 0)).to.be(0);
expect(simplifiedFlatCoordinates).to.be.empty();
});
it('expands points to a zero-length line', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[0, 0, 0, 0], 0, 4, 2, 2, simplifiedFlatCoordinates, 0)).to.be(4);
expect(simplifiedFlatCoordinates).to.eql([0, 0, 0, 0]);
});
it('snaps near-by points to the same value', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[0.1, 0, 0, 0.1], 0, 4, 2, 2, simplifiedFlatCoordinates, 0)).to.be(4);
expect(simplifiedFlatCoordinates).to.eql([0, 0, 0, 0]);
});
it('eliminates duplicate snapped points', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[0.1, 0, 2, 0, 2.1, 0, 2, 0.1, 1.9, 0, 2, -0.1], 0, 12, 2, 2,
simplifiedFlatCoordinates, 0)).to.be(4);
expect(simplifiedFlatCoordinates).to.eql([0, 0, 2, 0]);
@@ -320,7 +320,7 @@ describe('ol.geom.flat.simplify', function() {
it('eliminates horizontal colinear points', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[0, 0, 2, 0, 4, 0, 6, 0], 0, 8, 2, 2,
simplifiedFlatCoordinates, 0)).to.be(4);
expect(simplifiedFlatCoordinates).to.eql([0, 0, 6, 0]);
@@ -328,7 +328,7 @@ describe('ol.geom.flat.simplify', function() {
it('eliminates vertical colinear points', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[0, 0, 0, -2, 0, -4, 0, -6], 0, 8, 2, 2,
simplifiedFlatCoordinates, 0)).to.be(4);
expect(simplifiedFlatCoordinates).to.eql([0, 0, 0, -6]);
@@ -336,7 +336,7 @@ describe('ol.geom.flat.simplify', function() {
it('eliminates diagonal colinear points', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[0, 0, 2, -2, 4, -4, 6, -6], 0, 8, 2, 2,
simplifiedFlatCoordinates, 0)).to.be(4);
expect(simplifiedFlatCoordinates).to.eql([0, 0, 6, -6]);
@@ -344,7 +344,7 @@ describe('ol.geom.flat.simplify', function() {
it('handles switchbacks', function() {
const simplifiedFlatCoordinates = [];
expect(_ol_geom_flat_simplify_.quantize(
expect(quantize(
[0, 0, 2, 0, 0, 0, 4, 0], 0, 8, 2, 2,
simplifiedFlatCoordinates, 0)).to.be(8);
expect(simplifiedFlatCoordinates).to.eql([0, 0, 2, 0, 0, 0, 4, 0]);