77 lines
1.8 KiB
JavaScript
77 lines
1.8 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
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* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Utilities for testing SVG matrices
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*/
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function createMatrix(a, b, c, d, e, f)
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{
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var svg = document.getElementsByTagName("svg")[0];
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var m = svg.createSVGMatrix();
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m.a = a;
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m.b = b;
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m.c = c;
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m.d = d;
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m.e = e;
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m.f = f;
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return m;
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}
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// Lightweight dummy Matrix class for representing arrays that get passed in
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function MatrixFromArray(a)
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{
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this.a = a[0];
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this.b = a[1];
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this.c = a[2];
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this.d = a[3];
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this.e = a[4];
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this.f = a[5];
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}
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function cmpMatrix(a, b, msg)
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{
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if (a.constructor === Array)
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a = new MatrixFromArray(a);
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if (b.constructor === Array)
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b = new MatrixFromArray(b);
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ok(a.a == b.a &&
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a.b == b.b &&
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a.c == b.c &&
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a.d == b.d &&
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a.e == b.e &&
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a.f == b.f,
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msg + " - got " + formatMatrix(a)
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+ ", expected " + formatMatrix(b));
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}
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function roughCmpMatrix(a, b, msg)
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{
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if (a.constructor === Array)
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a = new MatrixFromArray(a);
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if (b.constructor === Array)
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b = new MatrixFromArray(b);
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const tolerance = 1 / 65535;
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ok(Math.abs(b.a - a.a) < tolerance &&
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Math.abs(b.b - a.b) < tolerance &&
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Math.abs(b.c - a.c) < tolerance &&
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Math.abs(b.d - a.d) < tolerance &&
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Math.abs(b.e - a.e) < tolerance &&
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Math.abs(b.f - a.f) < tolerance,
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msg + " - got " + formatMatrix(a)
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+ ", expected " + formatMatrix(b));
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}
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function formatMatrix(m)
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{
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if (m.constructor != Array)
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return "(" + [m.a, m.b, m.c, m.d, m.e, m.f].join(', ') + ")";
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return "(" + m.join(', ') + ")";
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}
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