| <!doctype html> |
| <title>Geometry APIs spec examples</title> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <link rel=help href="https://drafts.fxtf.org/geometry/"> |
| <script> |
| test(() => { |
| var point = new DOMPoint(5, 4); |
| var matrix = new DOMMatrix([2, 0, 0, 2, 10, 10]); |
| var transformedPoint = point.matrixTransform(matrix); |
| // The point variable is set to a new DOMPoint object with x coordinate initialized to 5 and y |
| // coordinate initialized to 4. |
| assert_equals(point.x, 5, 'point.x'); |
| assert_equals(point.y, 4, 'point.y'); |
| assert_equals(point.z, 0, 'point.z'); |
| assert_equals(point.w, 1, 'point.w'); |
| // This new DOMPoint is now scaled and the translated by matrix. This resulting transformedPoint |
| // has the x coordinate 20 and y coordinate 18. |
| assert_equals(transformedPoint.x, 20, 'transformedPoint.x'); |
| assert_equals(transformedPoint.y, 18, 'transformedPoint.x'); |
| assert_equals(transformedPoint.z, 0, 'transformedPoint.z'); |
| assert_equals(transformedPoint.w, 1, 'transformedPoint.w'); |
| }, 'matrixTransform'); |
| |
| test(() => { |
| var point = new DOMPoint(2, 0); |
| var quad1 = new DOMQuad(point, {x: 12, y: 0}, {x: 12, y: 10}, {x: 2, y: 10}); |
| // The attribute values of the resulting DOMQuad quad1 above are also equivalent to the attribute |
| // values of the following DOMQuad quad2: |
| var rect = new DOMRect(2, 0, 10, 10); |
| var quad2 = DOMQuad.fromRect(rect); |
| for (var p of ['p1', 'p2', 'p3', 'p4']) { |
| for (var attr of ['x', 'y', 'z', 'w']) { |
| assert_equals(quad2[p][attr], quad1[p][attr], `${p}.${attr}`); |
| } |
| } |
| }, 'DOMQuad'); |
| |
| test(() => { |
| var quad = new DOMQuad({x: 40, y: 25}, {x: 180, y: 8}, {x: 210, y: 150}, {x: 10, y: 180}); |
| // <circle cx="40" cy="25" r="3" fill="rgb(204, 51, 51)"/> |
| assert_equals(quad.p1.x, 40, 'p1.x'); |
| assert_equals(quad.p1.y, 25, 'p1.y'); |
| // <circle cx="180" cy="8" r="3" fill="rgb(204, 51, 51)"/> |
| assert_equals(quad.p2.x, 180, 'p2.x'); |
| assert_equals(quad.p2.y, 8, 'p2.y'); |
| // <circle cx="210" cy="150" r="3" fill="rgb(204, 51, 51)"/> |
| assert_equals(quad.p3.x, 210, 'p3.x'); |
| assert_equals(quad.p3.y, 150, 'p3.y'); |
| // <circle cx="10" cy="180" r="3" fill="rgb(204, 51, 51)"/> |
| assert_equals(quad.p4.x, 10, 'p4.x'); |
| assert_equals(quad.p4.y, 180, 'p4.y'); |
| var bounds = quad.getBounds(); |
| // <rect x="10" y="8" width="200" height="172" fill="none" stroke="black" stroke-dasharray="3 2"/> |
| assert_equals(bounds.x, 10, 'bounds.x'); |
| assert_equals(bounds.y, 8, 'bounds.x'); |
| assert_equals(bounds.width, 200, 'bounds.width'); |
| assert_equals(bounds.height, 172, 'bounds.height'); |
| }, 'DOMQuad irregular'); |
| |
| test(() => { |
| // In this example, a matrix is created and several 2D transformation methods are called: |
| var matrix = new DOMMatrix(); |
| matrix.scaleSelf(2); |
| matrix.translateSelf(20,20); |
| assert_equals(matrix.toString(), "matrix(2, 0, 0, 2, 40, 40)"); |
| }, 'DOMMatrix 2D transformation'); |
| |
| test(() => { |
| // In the following example, a matrix is created and several 3D transformation methods are called: |
| var matrix = new DOMMatrix(); |
| matrix.scale3dSelf(2); |
| assert_equals(matrix.toString(), "matrix3d(2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 1)"); |
| }, 'DOMMatrix 3D transformation'); |
| |
| test(() => { |
| // This example will throw an exception because there are non-finite values in the matrix. |
| var matrix = new DOMMatrix([NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN, NaN]); |
| assert_throws("InvalidStateError", () => { var string = matrix + " Batman!"; }); |
| }, 'DOMMatrix NaN'); |
| |
| test(() => { |
| var matrix = new DOMMatrix(); |
| matrix.translateSelf(20, 20); |
| matrix.scaleSelf(2); |
| matrix.translateSelf(-20, -20); |
| // is equivalent to: |
| var matrix2 = new DOMMatrix(); |
| matrix2.translateSelf(20, 20).scaleSelf(2).translateSelf(-20, -20); |
| assert_equals(matrix.toString(), matrix2.toString()); |
| }, 'DOMMatrix mutable'); |
| </script> |
