1 /*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/private/base/SkFloatingPoint.h"
9 #include "src/core/SkScaleToSides.h"
10 #include "tests/Test.h"
11
12 #include <algorithm>
13 #include <array>
14 #include <cfloat>
15
DEF_TEST(ScaleToSides,reporter)16 DEF_TEST(ScaleToSides, reporter) {
17 double interestingValues[] = {
18 // From sample app - PathFuzzer
19 260.01662826538085938,
20 63.61007690429687500,
21 795.98901367187500000,
22 217.71697616577148438,
23 686.15960693359375000,
24 556.57641601562500000,
25 // From skp bitbucket
26 111.60000228881836,
27 55.800003051757813,
28 0.99999996581812677920,
29 0.0,
30 0.5,
31 1.0,
32 2.0,
33 3.0,
34 33.0,
35 33554430.0,
36 33554431.0,
37 33554464.0,
38 333333332.0,
39 333333333.0,
40 333333334.0,
41 FLT_MAX,
42 FLT_EPSILON,
43 FLT_MIN,
44 340282569745034499980078846904281071616.0,
45 170141284872517249990039423452140535808.0,
46 170141244307698042686698575557637963776.0,
47 };
48
49 int numInterestingValues = (int)std::size(interestingValues);
50
51 for (int s = 0; s <= numInterestingValues; s++) {
52 for (int i = 0; i < numInterestingValues; i++) {
53 for (int j = 0; j < numInterestingValues; j++) {
54 for (int k = 0; k < numInterestingValues; k++) {
55 // We're about to cast values i and j to float, don't bother if they won't fit.
56 // (Is there a more robust way to test this, like SkTFitsIn but double->float?)
57 if (interestingValues[i] > FLT_MAX ||
58 interestingValues[j] > FLT_MAX) {
59 continue;
60 }
61 float radius1 = (float)interestingValues[i];
62 float radius2 = (float)interestingValues[j];
63 double width = interestingValues[k];
64 double scale = sk_ieee_double_divide(width, (double)radius1 + (double)radius2);
65 if (width > 0.0) {
66 if (s != 0) {
67 scale = std::min(scale, interestingValues[s-1]);
68 }
69 if (scale < 1.0 && scale > 0.0) {
70 SkScaleToSides::AdjustRadii(width, scale, &radius1, &radius2);
71 }
72 }
73 }
74 }
75 }
76 }
77 }
78