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skia2/tests/StrokerTest.cpp
John Stiles 9765973380 Fix cases of variable shadowing in /tests/. 
If we manage to fix all the existing cases of variable shadowing, we
could enable -Wshadow.

Change-Id: Ib8b92275c5da71c4ee48540d434f3afdc45f4067
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/438819
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Florin Malita <fmalita@google.com>
2021-08-12 16:11:39 +00:00

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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/core/SkTime.h"
#include "include/utils/SkRandom.h"
#include "src/core/SkPointPriv.h"
#include "src/core/SkStrokerPriv.h"
#include "src/pathops/SkPathOpsCubic.h"
#include "tests/PathOpsCubicIntersectionTestData.h"
#include "tests/PathOpsQuadIntersectionTestData.h"
#include "tests/Test.h"
#include "tools/flags/CommandLineFlags.h"
using namespace PathOpsCubicIntersectionTestData;
static DEFINE_bool(timeout, true, "run until alloted time expires");
#define MS_TEST_DURATION 10
const SkScalar widths[] = {-FLT_MAX, -1, -0.1f, -FLT_EPSILON, 0, FLT_EPSILON,
0.0000001f, 0.000001f, 0.00001f, 0.0001f, 0.001f, 0.01f,
0.1f, 0.2f, 0.3f, 0.4f, 0.5f, 1, 1.1f, 2, 10, 10e2f, 10e3f, 10e4f, 10e5f, 10e6f, 10e7f,
10e8f, 10e9f, 10e10f, 10e20f, FLT_MAX };
size_t widths_count = SK_ARRAY_COUNT(widths);
static void pathTest(const SkPath& path) {
SkPaint p;
SkPath fill;
p.setStyle(SkPaint::kStroke_Style);
for (size_t index = 0; index < widths_count; ++index) {
p.setStrokeWidth(widths[index]);
p.getFillPath(path, &fill);
}
}
static void cubicTest(const SkPoint c[4]) {
SkPath path;
path.moveTo(c[0].fX, c[0].fY);
path.cubicTo(c[1].fX, c[1].fY, c[2].fX, c[2].fY, c[3].fX, c[3].fY);
pathTest(path);
}
static void quadTest(const SkPoint c[3]) {
SkPath path;
path.moveTo(c[0].fX, c[0].fY);
path.quadTo(c[1].fX, c[1].fY, c[2].fX, c[2].fY);
pathTest(path);
}
static void cubicSetTest(const CubicPts* dCubic, size_t count) {
skiatest::Timer timer;
for (size_t index = 0; index < count; ++index) {
const CubicPts& dPts = dCubic[index];
SkDCubic d;
d.debugSet(dPts.fPts);
SkPoint c[4] = { {(float) d[0].fX, (float) d[0].fY}, {(float) d[1].fX, (float) d[1].fY},
{(float) d[2].fX, (float) d[2].fY}, {(float) d[3].fX, (float) d[3].fY} };
cubicTest(c);
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
}
static void cubicPairSetTest(const CubicPts dCubic[][2], size_t count) {
skiatest::Timer timer;
for (size_t index = 0; index < count; ++index) {
for (int pair = 0; pair < 2; ++pair) {
const CubicPts& dPts = dCubic[index][pair];
SkDCubic d;
d.debugSet(dPts.fPts);
SkPoint c[4] = { {(float) d[0].fX, (float) d[0].fY}, {(float) d[1].fX, (float) d[1].fY},
{(float) d[2].fX, (float) d[2].fY}, {(float) d[3].fX, (float) d[3].fY} };
cubicTest(c);
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
}
}
static void quadSetTest(const QuadPts* dQuad, size_t count) {
skiatest::Timer timer;
for (size_t index = 0; index < count; ++index) {
const QuadPts& dPts = dQuad[index];
SkDQuad d;
d.debugSet(dPts.fPts);
SkPoint c[3] = { {(float) d[0].fX, (float) d[0].fY}, {(float) d[1].fX, (float) d[1].fY},
{(float) d[2].fX, (float) d[2].fY} };
quadTest(c);
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
}
static void quadPairSetTest(const QuadPts dQuad[][2], size_t count) {
skiatest::Timer timer;
for (size_t index = 0; index < count; ++index) {
for (int pair = 0; pair < 2; ++pair) {
const QuadPts& dPts = dQuad[index][pair];
SkDQuad d;
d.debugSet(dPts.fPts);
SkPoint c[3] = { {(float) d[0].fX, (float) d[0].fY}, {(float) d[1].fX, (float) d[1].fY},
{(float) d[2].fX, (float) d[2].fY} };
quadTest(c);
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
}
}
DEF_TEST(QuadStrokerSet, reporter) {
quadSetTest(quadraticLines, quadraticLines_count);
quadSetTest(quadraticPoints, quadraticPoints_count);
quadSetTest(quadraticModEpsilonLines, quadraticModEpsilonLines_count);
quadPairSetTest(quadraticTests, quadraticTests_count);
}
DEF_TEST(CubicStrokerSet, reporter) {
cubicSetTest(pointDegenerates, pointDegenerates_count);
cubicSetTest(notPointDegenerates, notPointDegenerates_count);
cubicSetTest(lines, lines_count);
cubicSetTest(notLines, notLines_count);
cubicSetTest(modEpsilonLines, modEpsilonLines_count);
cubicSetTest(lessEpsilonLines, lessEpsilonLines_count);
cubicSetTest(negEpsilonLines, negEpsilonLines_count);
cubicPairSetTest(tests, tests_count);
}
static SkScalar unbounded(SkRandom& r) {
uint32_t val = r.nextU();
return SkBits2Float(val);
}
static SkScalar unboundedPos(SkRandom& r) {
uint32_t val = r.nextU() & 0x7fffffff;
return SkBits2Float(val);
}
DEF_TEST(QuadStrokerUnbounded, reporter) {
SkRandom r;
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
int best = 0;
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
skiatest::Timer timer;
for (int i = 0; i < 1000000; ++i) {
SkPath path, fill;
path.moveTo(unbounded(r), unbounded(r));
path.quadTo(unbounded(r), unbounded(r), unbounded(r), unbounded(r));
p.setStrokeWidth(unboundedPos(r));
p.getFillPath(path, &fill);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (best < gMaxRecursion[2]) {
if (reporter->verbose()) {
SkDebugf("\n%s quad=%d width=%1.9g\n", __FUNCTION__, gMaxRecursion[2],
p.getStrokeWidth());
path.dumpHex();
SkDebugf("fill:\n");
fill.dumpHex();
}
best = gMaxRecursion[2];
}
#endif
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("\n%s max quad=%d\n", __FUNCTION__, best);
}
#endif
}
DEF_TEST(CubicStrokerUnbounded, reporter) {
SkRandom r;
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
int bestTan = 0;
int bestCubic = 0;
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
skiatest::Timer timer;
for (int i = 0; i < 1000000; ++i) {
SkPath path, fill;
path.moveTo(unbounded(r), unbounded(r));
path.cubicTo(unbounded(r), unbounded(r), unbounded(r), unbounded(r),
unbounded(r), unbounded(r));
p.setStrokeWidth(unboundedPos(r));
p.getFillPath(path, &fill);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (bestTan < gMaxRecursion[0] || bestCubic < gMaxRecursion[1]) {
if (reporter->verbose()) {
SkDebugf("\n%s tan=%d cubic=%d width=%1.9g\n", __FUNCTION__, gMaxRecursion[0],
gMaxRecursion[1], p.getStrokeWidth());
path.dumpHex();
SkDebugf("fill:\n");
fill.dumpHex();
}
bestTan = std::max(bestTan, gMaxRecursion[0]);
bestCubic = std::max(bestCubic, gMaxRecursion[1]);
}
#endif
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("\n%s max tan=%d cubic=%d\n", __FUNCTION__, bestTan, bestCubic);
}
#endif
}
DEF_TEST(QuadStrokerConstrained, reporter) {
SkRandom r;
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
int best = 0;
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
skiatest::Timer timer;
for (int i = 0; i < 1000000; ++i) {
SkPath path, fill;
SkPoint quad[3];
quad[0].fX = r.nextRangeF(0, 500);
quad[0].fY = r.nextRangeF(0, 500);
const SkScalar halfSquared = 0.5f * 0.5f;
do {
quad[1].fX = r.nextRangeF(0, 500);
quad[1].fY = r.nextRangeF(0, 500);
} while (SkPointPriv::DistanceToSqd(quad[0], quad[1]) < halfSquared);
do {
quad[2].fX = r.nextRangeF(0, 500);
quad[2].fY = r.nextRangeF(0, 500);
} while (SkPointPriv::DistanceToSqd(quad[0], quad[2]) < halfSquared
|| SkPointPriv::DistanceToSqd(quad[1], quad[2]) < halfSquared);
path.moveTo(quad[0].fX, quad[0].fY);
path.quadTo(quad[1].fX, quad[1].fY, quad[2].fX, quad[2].fY);
p.setStrokeWidth(r.nextRangeF(0, 500));
p.getFillPath(path, &fill);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (best < gMaxRecursion[2]) {
if (reporter->verbose()) {
SkDebugf("\n%s quad=%d width=%1.9g\n", __FUNCTION__, gMaxRecursion[2],
p.getStrokeWidth());
path.dumpHex();
SkDebugf("fill:\n");
fill.dumpHex();
}
best = gMaxRecursion[2];
}
#endif
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("\n%s max quad=%d\n", __FUNCTION__, best);
}
#endif
}
DEF_TEST(CubicStrokerConstrained, reporter) {
SkRandom r;
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
int bestTan = 0;
int bestCubic = 0;
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
skiatest::Timer timer;
for (int i = 0; i < 1000000; ++i) {
SkPath path, fill;
SkPoint cubic[4];
cubic[0].fX = r.nextRangeF(0, 500);
cubic[0].fY = r.nextRangeF(0, 500);
const SkScalar halfSquared = 0.5f * 0.5f;
do {
cubic[1].fX = r.nextRangeF(0, 500);
cubic[1].fY = r.nextRangeF(0, 500);
} while (SkPointPriv::DistanceToSqd(cubic[0], cubic[1]) < halfSquared);
do {
cubic[2].fX = r.nextRangeF(0, 500);
cubic[2].fY = r.nextRangeF(0, 500);
} while ( SkPointPriv::DistanceToSqd(cubic[0], cubic[2]) < halfSquared
|| SkPointPriv::DistanceToSqd(cubic[1], cubic[2]) < halfSquared);
do {
cubic[3].fX = r.nextRangeF(0, 500);
cubic[3].fY = r.nextRangeF(0, 500);
} while ( SkPointPriv::DistanceToSqd(cubic[0], cubic[3]) < halfSquared
|| SkPointPriv::DistanceToSqd(cubic[1], cubic[3]) < halfSquared
|| SkPointPriv::DistanceToSqd(cubic[2], cubic[3]) < halfSquared);
path.moveTo(cubic[0].fX, cubic[0].fY);
path.cubicTo(cubic[1].fX, cubic[1].fY, cubic[2].fX, cubic[2].fY, cubic[3].fX, cubic[3].fY);
p.setStrokeWidth(r.nextRangeF(0, 500));
p.getFillPath(path, &fill);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (bestTan < gMaxRecursion[0] || bestCubic < gMaxRecursion[1]) {
if (reporter->verbose()) {
SkDebugf("\n%s tan=%d cubic=%d width=%1.9g\n", __FUNCTION__, gMaxRecursion[0],
gMaxRecursion[1], p.getStrokeWidth());
path.dumpHex();
SkDebugf("fill:\n");
fill.dumpHex();
}
bestTan = std::max(bestTan, gMaxRecursion[0]);
bestCubic = std::max(bestCubic, gMaxRecursion[1]);
}
#endif
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("\n%s max tan=%d cubic=%d\n", __FUNCTION__, bestTan, bestCubic);
}
#endif
}
DEF_TEST(QuadStrokerRange, reporter) {
SkRandom r;
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
int best = 0;
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
skiatest::Timer timer;
for (int i = 0; i < 1000000; ++i) {
SkPath path, fill;
SkPoint quad[3];
quad[0].fX = r.nextRangeF(0, 500);
quad[0].fY = r.nextRangeF(0, 500);
quad[1].fX = r.nextRangeF(0, 500);
quad[1].fY = r.nextRangeF(0, 500);
quad[2].fX = r.nextRangeF(0, 500);
quad[2].fY = r.nextRangeF(0, 500);
path.moveTo(quad[0].fX, quad[0].fY);
path.quadTo(quad[1].fX, quad[1].fY, quad[2].fX, quad[2].fY);
p.setStrokeWidth(r.nextRangeF(0, 500));
p.getFillPath(path, &fill);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (best < gMaxRecursion[2]) {
if (reporter->verbose()) {
SkDebugf("\n%s quad=%d width=%1.9g\n", __FUNCTION__, gMaxRecursion[2],
p.getStrokeWidth());
path.dumpHex();
SkDebugf("fill:\n");
fill.dumpHex();
}
best = gMaxRecursion[2];
}
#endif
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("\n%s max quad=%d\n", __FUNCTION__, best);
}
#endif
}
DEF_TEST(CubicStrokerRange, reporter) {
SkRandom r;
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
int best[2] = { 0 };
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
skiatest::Timer timer;
for (int i = 0; i < 1000000; ++i) {
SkPath path, fill;
path.moveTo(r.nextRangeF(0, 500), r.nextRangeF(0, 500));
path.cubicTo(r.nextRangeF(0, 500), r.nextRangeF(0, 500), r.nextRangeF(0, 500),
r.nextRangeF(0, 500), r.nextRangeF(0, 500), r.nextRangeF(0, 500));
p.setStrokeWidth(r.nextRangeF(0, 100));
p.getFillPath(path, &fill);
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (best[0] < gMaxRecursion[0] || best[1] < gMaxRecursion[1]) {
if (reporter->verbose()) {
SkDebugf("\n%s tan=%d cubic=%d width=%1.9g\n", __FUNCTION__, gMaxRecursion[0],
gMaxRecursion[1], p.getStrokeWidth());
path.dumpHex();
SkDebugf("fill:\n");
fill.dumpHex();
}
best[0] = std::max(best[0], gMaxRecursion[0]);
best[1] = std::max(best[1], gMaxRecursion[1]);
}
#endif
if (FLAGS_timeout && timer.elapsedMs() > MS_TEST_DURATION) {
return;
}
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("\n%s max tan=%d cubic=%d\n", __FUNCTION__, best[0], best[1]);
}
#endif
}
DEF_TEST(QuadStrokerOneOff, reporter) {
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SkDoubleToScalar(164.683548));
SkPath path, fill;
path.moveTo(SkBits2Float(0x43c99223), SkBits2Float(0x42b7417e));
path.quadTo(SkBits2Float(0x4285d839), SkBits2Float(0x43ed6645), SkBits2Float(0x43c941c8), SkBits2Float(0x42b3ace3));
p.getFillPath(path, &fill);
if (reporter->verbose()) {
SkDebugf("\n%s path\n", __FUNCTION__);
path.dump();
SkDebugf("fill:\n");
fill.dump();
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("max quad=%d\n", gMaxRecursion[2]);
}
#endif
}
DEF_TEST(CubicStrokerOneOff, reporter) {
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
sk_bzero(gMaxRecursion, sizeof(gMaxRecursion[0]) * 3);
#endif
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SkDoubleToScalar(42.835968));
SkPath path, fill;
path.moveTo(SkBits2Float(0x433f5370), SkBits2Float(0x43d1f4b3));
path.cubicTo(SkBits2Float(0x4331cb76), SkBits2Float(0x43ea3340), SkBits2Float(0x4388f498), SkBits2Float(0x42f7f08d), SkBits2Float(0x43f1cd32), SkBits2Float(0x42802ec1));
p.getFillPath(path, &fill);
if (reporter->verbose()) {
SkDebugf("\n%s path\n", __FUNCTION__);
path.dump();
SkDebugf("fill:\n");
fill.dump();
}
#if defined(SK_DEBUG) && QUAD_STROKE_APPROX_EXTENDED_DEBUGGING
if (reporter->verbose()) {
SkDebugf("max tan=%d cubic=%d\n", gMaxRecursion[0], gMaxRecursion[1]);
}
#endif
}
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