ca47aae7ec
https://codereview.appspot.com/6927054/ git-svn-id: http://skia.googlecode.com/svn/trunk@6756 2bbb7eff-a529-9590-31e7-b0007b416f81
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Test.h"
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#include "SkRandom.h"
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#include "SkRect.h"
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#ifdef SK_SCALAR_IS_FLOAT
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static float make_zero() {
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return sk_float_sin(0);
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}
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#endif
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static void test_center(skiatest::Reporter* reporter) {
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static const struct {
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SkIRect fRect;
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SkIPoint fCenter;
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} data[] = {
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{ { 0, 0, 0, 0 }, { 0, 0 } },
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{ { 0, 0, 1, 1 }, { 0, 0 } },
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{ { -1, -1, 0, 0 }, { -1, -1 } },
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{ { 0, 0, 10, 7 }, { 5, 3 } },
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{ { 0, 0, 11, 6 }, { 5, 3 } },
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};
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for (size_t index = 0; index < SK_ARRAY_COUNT(data); ++index) {
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REPORTER_ASSERT(reporter,
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data[index].fRect.centerX() == data[index].fCenter.x());
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REPORTER_ASSERT(reporter,
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data[index].fRect.centerY() == data[index].fCenter.y());
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}
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SkRandom rand;
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for (int i = 0; i < 10000; ++i) {
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SkIRect r;
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r.set(rand.nextS() >> 2, rand.nextS() >> 2,
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rand.nextS() >> 2, rand.nextS() >> 2);
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int cx = r.centerX();
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int cy = r.centerY();
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REPORTER_ASSERT(reporter, ((r.left() + r.right()) >> 1) == cx);
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REPORTER_ASSERT(reporter, ((r.top() + r.bottom()) >> 1) == cy);
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}
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}
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static void check_invalid(skiatest::Reporter* reporter,
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SkScalar l, SkScalar t, SkScalar r, SkScalar b) {
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SkRect rect;
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rect.set(l, t, r, b);
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REPORTER_ASSERT(reporter, !rect.isFinite());
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}
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// Tests that isFinite() will reject any rect with +/-inf values
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// as one of its coordinates.
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static void TestInfRect(skiatest::Reporter* reporter) {
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#ifdef SK_SCALAR_IS_FLOAT
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float inf = 1 / make_zero(); // infinity
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float nan = inf * 0;
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SkASSERT(!(nan == nan));
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#else
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SkFixed inf = SK_FixedNaN;
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SkFixed nan = SK_FixedNaN;
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#endif
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SkScalar small = SkIntToScalar(10);
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SkScalar big = SkIntToScalar(100);
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REPORTER_ASSERT(reporter, SkRect::MakeEmpty().isFinite());
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SkRect rect = SkRect::MakeXYWH(small, small, big, big);
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REPORTER_ASSERT(reporter, rect.isFinite());
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const SkScalar invalid[] = { nan, inf, -inf };
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for (size_t i = 0; i < SK_ARRAY_COUNT(invalid); ++i) {
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check_invalid(reporter, small, small, big, invalid[i]);
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check_invalid(reporter, small, small, invalid[i], big);
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check_invalid(reporter, small, invalid[i], big, big);
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check_invalid(reporter, invalid[i], small, big, big);
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}
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test_center(reporter);
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}
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// need tests for SkStrSearch
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#include "TestClassDef.h"
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DEFINE_TESTCLASS("InfRect", InfRectTestClass, TestInfRect)
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