59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
goog.require('ol.geom.flat.straightchunk');
|
|
|
|
|
|
describe('ol.geom.flat.straightchunk', function() {
|
|
|
|
describe('ol.geom.flat.straightchunk.lineString', function() {
|
|
|
|
describe('single segment with stride == 3', function() {
|
|
var flatCoords = [0, 0, 42, 1, 1, 42];
|
|
var stride = 3;
|
|
|
|
it('returns whole line with angle delta', function() {
|
|
var got = ol.geom.flat.straightchunk.lineString(Math.PI / 4, flatCoords, 0, 6, stride);
|
|
expect(got).to.eql([0, 6]);
|
|
});
|
|
|
|
it('returns whole line with zero angle delta', function() {
|
|
var got = ol.geom.flat.straightchunk.lineString(0, flatCoords, 0, 6, stride);
|
|
expect(got).to.eql([0, 6]);
|
|
});
|
|
|
|
});
|
|
|
|
describe('short line string', function() {
|
|
var flatCoords = [0, 0, 1, 0, 1, 1, 0, 1];
|
|
var stride = 2;
|
|
|
|
it('returns whole line if straight enough', function() {
|
|
var got = ol.geom.flat.straightchunk.lineString(Math.PI, flatCoords, 0, 8, stride);
|
|
expect(got).to.eql([0, 8]);
|
|
});
|
|
|
|
it('returns first matching chunk if all chunk lengths are the same', function() {
|
|
var got = ol.geom.flat.straightchunk.lineString(Math.PI / 4, flatCoords, 0, 8, stride);
|
|
expect(got).to.eql([0, 4]);
|
|
});
|
|
|
|
});
|
|
|
|
describe('longer line string', function() {
|
|
var flatCoords = [0, 0, 1, 0, 1, 1, 0, 1, 0, -1, -1, -1, -1, 0, -1, 2, -2, 4];
|
|
var stride = 2;
|
|
|
|
it('returns stright chunk from within the linestring', function() {
|
|
var got = ol.geom.flat.straightchunk.lineString(0, flatCoords, 0, 18, stride);
|
|
expect(got).to.eql([10, 16]);
|
|
});
|
|
|
|
it('returns long chunk at the end if angle and length within threshold', function() {
|
|
var got = ol.geom.flat.straightchunk.lineString(Math.PI / 4, flatCoords, 0, 18, stride);
|
|
expect(got).to.eql([10, 18]);
|
|
});
|
|
|
|
});
|
|
|
|
});
|
|
|
|
});
|