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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkRandom.h"
#include "SkRect.h"
#include "Test.h"
static float make_zero() {
return sk_float_sin(0);
}
struct RectCenter {
SkIRect fRect;
SkIPoint fCenter;
};
static void test_center(skiatest::Reporter* reporter) {
static const RectCenter gData[] = {
{ { 0, 0, 0, 0 }, { 0, 0 } },
{ { 0, 0, 1, 1 }, { 0, 0 } },
{ { -1, -1, 0, 0 }, { -1, -1 } },
{ { 0, 0, 10, 7 }, { 5, 3 } },
{ { 0, 0, 11, 6 }, { 5, 3 } },
};
for (size_t index = 0; index < SK_ARRAY_COUNT(gData); ++index) {
REPORTER_ASSERT(reporter,
gData[index].fRect.centerX() == gData[index].fCenter.x());
REPORTER_ASSERT(reporter,
gData[index].fRect.centerY() == gData[index].fCenter.y());
}
SkRandom rand;
for (int i = 0; i < 10000; ++i) {
SkIRect r;
r.set(rand.nextS() >> 2, rand.nextS() >> 2,
rand.nextS() >> 2, rand.nextS() >> 2);
int cx = r.centerX();
int cy = r.centerY();
REPORTER_ASSERT(reporter, ((r.left() + r.right()) >> 1) == cx);
REPORTER_ASSERT(reporter, ((r.top() + r.bottom()) >> 1) == cy);
}
}
static void check_invalid(skiatest::Reporter* reporter,
SkScalar l, SkScalar t, SkScalar r, SkScalar b) {
SkRect rect;
rect.set(l, t, r, b);
REPORTER_ASSERT(reporter, !rect.isFinite());
}
// Tests that isFinite() will reject any rect with +/-inf values
// as one of its coordinates.
DEF_TEST(InfRect, reporter) {
float inf = 1 / make_zero(); // infinity
float nan = inf * 0;
SkASSERT(!(nan == nan));
SkScalar small = SkIntToScalar(10);
SkScalar big = SkIntToScalar(100);
REPORTER_ASSERT(reporter, SkRect::MakeEmpty().isFinite());
SkRect rect = SkRect::MakeXYWH(small, small, big, big);
REPORTER_ASSERT(reporter, rect.isFinite());
const SkScalar invalid[] = { nan, inf, -inf };
for (size_t i = 0; i < SK_ARRAY_COUNT(invalid); ++i) {
check_invalid(reporter, small, small, big, invalid[i]);
check_invalid(reporter, small, small, invalid[i], big);
check_invalid(reporter, small, invalid[i], big, big);
check_invalid(reporter, invalid[i], small, big, big);
}
test_center(reporter);
}
// need tests for SkStrSearch
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