canvas-isPointInStroke.html | Explore in Territory

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<body>
<script>
var ctx = document.createElement('canvas').getContext('2d');
document.body.appendChild(ctx.canvas);
ctx.strokeStyle = '#0ff';

// Create new path.
ctx.beginPath();
ctx.rect(20,20,100,100);

function testPointInStroke(x, y, isPointInStroke) {
    if(isPointInStroke)
        assert_true(ctx.isPointInStroke(x, y));
    else
        assert_false(ctx.isPointInStroke(x, y));
}

testScenarios1 = 
    [
        ['TestScenario 1, Case 1', 20, 20, true],
        ['TestScenario 1, Case 2', 120, 20, true],
        ['TestScenario 1, Case 3', 20, 120, true],
        ['TestScenario 1, Case 4', 120, 120, true],
        ['TestScenario 1, Case 5', 70, 20, true],
        ['TestScenario 1, Case 6', 20, 70, true],
        ['TestScenario 1, Case 7', 120, 70, true],
        ['TestScenario 1, Case 8', 70, 120, true],

        ['TestScenario 1, Case 9', 22, 22, false],
        ['TestScenario 1, Case 10', 118, 22, false],
        ['TestScenario 1, Case 11', 22, 118, false],
        ['TestScenario 1, Case 12', 118, 118, false],
        ['TestScenario 1, Case 13', 70, 18, false],
        ['TestScenario 1, Case 14', 122, 70, false],
        ['TestScenario 1, Case 15', 70, 122, false],
        ['TestScenario 1, Case 16', 18, 70, false],
    ];

testScenarios2 = 
    [
        ['TestScenario 2, Case 1', 22, 22, true],
        ['TestScenario 2, Case 2', 118, 22, true],
        ['TestScenario 2, Case 3', 22, 118, true],
        ['TestScenario 2, Case 4', 118, 118, true],
        ['TestScenario 2, Case 5', 70, 18, true],
        ['TestScenario 2, Case 6', 122, 70, true],
        ['TestScenario 2, Case 7', 70, 122, true],
        ['TestScenario 2, Case 8', 18, 70, true],

        ['TestScenario 2, Case 9', 26, 70, false],
        ['TestScenario 2, Case 10', 70, 26, false],
        ['TestScenario 2, Case 11', 70, 114, false],
        ['TestScenario 2, Case 12', 114, 70, false],
    ];

generate_tests(testPointInStroke, testScenarios1);
ctx.lineWidth = 10;
generate_tests(testPointInStroke, testScenarios2);

test(function(t) {
    ctx.beginPath();
    ctx.moveTo(10,10);
    ctx.lineTo(110,20);
    ctx.lineTo(10,30);
    ctx.lineJoin = "bevel";
    assert_false(ctx.isPointInStroke(113,20));
    
    ctx.miterLimit = 40.0;
    ctx.lineJoin = "miter";
    assert_true(ctx.isPointInStroke(113,20));
    
    ctx.miterLimit = 2.0;
    assert_false(ctx.isPointInStroke(113,20));
    
    ctx.beginPath();
    ctx.moveTo(10,10);
    ctx.lineTo(110,10);
    ctx.lineCap = "butt";
    assert_false(ctx.isPointInStroke(112,10));
    
    ctx.lineCap = "round";
    assert_true(ctx.isPointInStroke(112,10));
    assert_false(ctx.isPointInStroke(117,10));
    
    ctx.lineCap = "square";
    assert_true(ctx.isPointInStroke(112,10));
    assert_false(ctx.isPointInStroke(117,10));
    
    ctx.lineCap = "butt";
    ctx.setLineDash([10,10]);
    assert_true(ctx.isPointInStroke(15,10));
    assert_false(ctx.isPointInStroke(25,10));
    assert_true(ctx.isPointInStroke(35,10));
    
    ctx.lineDashOffset = 10;
    assert_false(ctx.isPointInStroke(15,10));
    assert_true(ctx.isPointInStroke(25,10));
    assert_false(ctx.isPointInStroke(35,10));
    
    ctx.save();
    ctx.scale(Number.MAX_VALUE, Number.MAX_VALUE);
    ctx.beginPath();
    ctx.moveTo(-10, -10);
    ctx.lineTo(10, 10);
    assert_true(ctx.isPointInStroke(0, 0));
    ctx.restore();
    
    ctx.save();
    ctx.scale(0, 0);
    ctx.beginPath();
    ctx.moveTo(-10, -10);
    ctx.lineTo(10, 10);
    assert_false(ctx.isPointInStroke(0, 0));
    ctx.restore();
}, "Test the behavior of isPointInStroke in Canvas");

</script>
</body>
chromium/third_party/blink/web_tests/fast/canvas-api/canvas-isPointInStroke.html
