efc86d59b0
This commit also changes the TextReplay.drawText() signature, and moves geometry calculation into drawText(). This improves performance where no text needs to be rendered (TextStyle.getText() == ''), which is used often in applications.
122 lines
4.8 KiB
JavaScript
122 lines
4.8 KiB
JavaScript
goog.require('ol.geom.flat.textpath');
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goog.require('ol.geom.flat.length');
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describe('textpath', function() {
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var horizontal = [0, 0, 100, 0];
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var vertical = [0, 0, 0, 100];
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var diagonal = [0, 0, 100, 100];
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var reverse = [100, 0, 0, 100];
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var angled = [0, 0, 100, 100, 200, 0];
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var reverseangled = [151, 17, 163, 22, 159, 30, 150, 30, 143, 24, 151, 17];
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function measure(text) {
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return 10 * text.length;
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}
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it('center-aligns text on a horizontal line', function() {
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var startM = 50 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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horizontal, 0, horizontal.length, 2, 'foo', measure, startM, Infinity);
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expect(instructions).to.eql([[40, 0, 0], [50, 0, 0], [60, 0, 0]]);
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});
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it('left-aligns text on a horizontal line', function() {
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var instructions = ol.geom.flat.textpath.lineString(
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horizontal, 0, horizontal.length, 2, 'foo', measure, 0, Infinity);
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expect(instructions).to.eql([[5, 0, 0], [15, 0, 0], [25, 0, 0]]);
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});
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it('right-aligns text on a horizontal line', function() {
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var startM = 100 - 30;
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var instructions = ol.geom.flat.textpath.lineString(
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horizontal, 0, horizontal.length, 2, 'foo', measure, startM, Infinity);
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expect(instructions).to.eql([[75, 0, 0], [85, 0, 0], [95, 0, 0]]);
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});
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it('draws text on a vertical line', function() {
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var startM = 50 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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vertical, 0, vertical.length, 2, 'foo', measure, startM, Infinity);
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var a = 90 * Math.PI / 180;
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expect(instructions).to.eql([[0, 40, a], [0, 50, a], [0, 60, a]]);
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});
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it('draws text on a diagonal line', function() {
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var startM = Math.sqrt(2) * 50 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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diagonal, 0, diagonal.length, 2, 'foo', measure, startM, Infinity);
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expect(instructions[0][2]).to.be(45 * Math.PI / 180);
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expect(instructions[0][0]).to.be.lessThan(instructions[2][0]);
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expect(instructions[0][1]).to.be.lessThan(instructions[2][1]);
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});
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it('draws reverse text on a diagonal line', function() {
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var startM = Math.sqrt(2) * 50 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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reverse, 0, reverse.length, 2, 'foo', measure, startM, Infinity);
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expect(instructions[0][2]).to.be(-45 * Math.PI / 180);
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expect(instructions[0][0]).to.be.lessThan(instructions[2][0]);
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expect(instructions[0][1]).to.be.greaterThan(instructions[2][1]);
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});
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it('renders long text with extrapolation', function() {
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var startM = 50 - 75;
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var instructions = ol.geom.flat.textpath.lineString(
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horizontal, 0, horizontal.length, 2, 'foo-foo-foo-foo', measure, startM, Infinity);
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expect(instructions[0]).to.eql([-20, 0, 0]);
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expect(instructions[14]).to.eql([120, 0, 0]);
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});
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it('renders angled text', function() {
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var length = ol.geom.flat.length.lineString(angled, 0, angled.length, 2);
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var startM = length / 2 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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angled, 0, angled.length, 2, 'foo', measure, startM, Infinity);
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expect(instructions[0][2]).to.be(45 * Math.PI / 180);
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expect(instructions[2][2]).to.be(-45 * Math.PI / 180);
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});
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it('respects maxAngle', function() {
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var length = ol.geom.flat.length.lineString(angled, 0, angled.length, 2);
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var startM = length / 2 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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angled, 0, angled.length, 2, 'foo', measure, startM, Math.PI / 4);
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expect(instructions).to.be(null);
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});
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it('uses the smallest angle for maxAngleDelta', function() {
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var length = ol.geom.flat.length.lineString(reverseangled, 0, reverseangled.length, 2);
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var startM = length / 2 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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reverseangled, 0, reverseangled.length, 2, 'foo', measure, startM, Math.PI);
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expect(instructions).to.not.be(undefined);
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});
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it('respects the begin option', function() {
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var length = ol.geom.flat.length.lineString(angled, 2, angled.length, 2);
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var startM = length / 2 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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angled, 2, angled.length, 2, 'foo', measure, startM, Infinity);
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expect(instructions[1][0]).to.be(150);
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});
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it('respects the end option', function() {
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var length = ol.geom.flat.length.lineString(angled, 0, 4, 2);
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var startM = length / 2 - 15;
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var instructions = ol.geom.flat.textpath.lineString(
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angled, 0, 4, 2, 'foo', measure, startM, Infinity);
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expect(instructions[1][0]).to.be(50);
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});
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it('uses the provided result array', function() {
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var result = [];
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result[3] = undefined;
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var startM = 50 - 15;
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ol.geom.flat.textpath.lineString(
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horizontal, 0, horizontal.length, 2, 'foo', measure, startM, Infinity, result);
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expect(result).to.eql([[40, 0, 0], [50, 0, 0], [60, 0, 0], undefined]);
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});
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});
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