| <!DOCTYPE html> |
| <title>Point mapping through 3D transform hierarchies</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-document-elementfrompoint"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style type="text/css" media="screen"> |
| #scene { |
| position: absolute; |
| border: 1px solid black; |
| height: 400px; |
| width: 400px; |
| perspective: 600px; |
| transform-style: preserve-3d; |
| } |
| |
| #container { |
| position: absolute; |
| height: 300px; |
| width: 300px; |
| margin: 50px; |
| border: 1px solid blue; |
| transform-style: preserve-3d; |
| } |
| |
| #card { |
| position: absolute; |
| top: 50px; |
| left: 50px; |
| height: 200px; |
| width: 200px; |
| background-color: #81AA8A; |
| transform-origin: right top; |
| transform: rotateY(45deg); |
| } |
| |
| #card:hover { |
| background-color: orange; |
| } |
| </style> |
| |
| <body> |
| <div id="scene"> |
| <div id="container"> |
| <div id="card"></div> |
| </div> |
| </div> |
| </body> |
| |
| <script> |
| class Point { |
| constructor(x, y) { |
| this.x = x; |
| this.y = y; |
| } |
| }; |
| const tests = [{ |
| expectedElemId: 'card', |
| // Points inside the 3D-transformed element |
| insidePoints: [ |
| new Point(160, 85), // Top-left |
| new Point(306, 113), // Top-right |
| new Point(160, 335), // Bottom-left |
| new Point(307, 307), // Bottom-right |
| ], |
| // Points outside the 3D-transformed element |
| outsidePoints: [ |
| new Point(115, 115), // Inside top-left when untransformed |
| new Point(115, 300), // Inside bottom-left when untransformed |
| ] |
| } |
| ]; |
| |
| tests.forEach(testcase => { |
| test(t => { |
| const expectedElem = document.getElementById(testcase.expectedElemId); |
| // Test points that should hit the element |
| for (const point of testcase.insidePoints) { |
| const hitElem = document.elementFromPoint(point.x, point.y); |
| assert_equals(hitElem, expectedElem, |
| `point (${point.x}, ${point.y}) should be inside element ${testcase.expectedElemId}`); |
| } |
| // Test points that should NOT hit the element |
| for (const point of testcase.outsidePoints) { |
| const hitElem = document.elementFromPoint(point.x, point.y); |
| assert_not_equals(hitElem, expectedElem, |
| `point (${point.x}, ${point.y}) should be outside element ${testcase.expectedElemId}`); |
| } |
| }, `${document.title}, hittesting ${testcase.expectedElemId})`); |
| }); |
| </script> |
| |
| </html> |
