/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "PathOpsTestCommon.h"
#include "SkOpSegment.h"
#include "SkTArray.h"
#include "Test.h"
static const SkPoint cubics[][4] = {
/* 0 */ {{0, 1}, {2, 6}, {4, 2}, {5, 3}},
/* 1 */ {{10, 234}, {10, 229.581726f}, {13.5817204f, 226}, {18, 226}},
/* 2 */ {{132, 11419}, {130.89543151855469f, 11419}, {130, 11418.1044921875f}, {130, 11417}},
/* 3 */ {{130.04275512695312f, 11417.4130859375f}, {130.23307800292969f, 11418.3193359375f},
{131.03709411621094f, 11419}, {132, 11419}},
/* 4 */ {{0,1}, {0,5}, {4,1}, {6,4}},
/* 5 */ {{1,5}, {4,6}, {1,0}, {4,0}},
/* 6 */ {{0,1}, {0,4}, {5,1}, {6,4}},
/* 7 */ {{0,1}, {1,2}, {1,0}, {6,1}},
/* 8 */ {{0,3}, {0,1}, {2,0}, {1,0}},
/* 9 */ {{189,7}, {189,5.3431458473205566f}, {190.3431396484375f,4}, {192,4}},
/* 10 */ {{0,1}, {1,3}, {1,0}, {6,4}},
/* 11 */ {{0,1}, {2,3}, {2,1}, {4,3}},
/* 12 */ {{1,2}, {3,4}, {1,0}, {3,2}},
/* 13 */ {{0,1}, {4,6}, {4,3}, {5,4}},
/* 14 */ {{806,11419}, {806.962890625f,11419}, {807.76690673828125f,11418.3193359375f}, {807.957275390625f,11417.4130859375f}},
/* 15 */ {{808,11417}, {808,11418.1044921875f}, {807.10455322265625f,11419}, {806,11419}},
/* 16 */ {{132,11419}, {130.89543151855469f,11419}, {130,11418.1044921875f}, {130,11417}},
/* 17 */ {{130.04275512695312f,11417.4130859375f}, {130.23312377929687f,11418.3193359375f}, {131.03707885742187f,11419}, {132,11419}},
/* 18 */ {{1006.6951293945312f,291}, {1023.263671875f,291}, {1033.8402099609375f,304.43145751953125f}, {1030.318359375f,321}},
};
static const SkPoint quads[][3] = {
/* 0 */ {{12.3423996f, 228.342407f}, {10, 230.686295f}, {10, 234}},
/* 1 */ {{304.24319458007812f,591.75677490234375f}, {306,593.51470947265625f}, {306,596}},
/* 2 */ {{0,0}, {3,1}, {0,3}},
/* 3 */ {{0,1}, {3,1}, {0,2}},
};
static const SkPoint lines[][2] = {
/* 0 */ {{6, 2}, {2, 4}},
/* 1 */ {{306,617}, {306,590}},
/* 2 */ {{306,596}, {306,617}},
/* 3 */ {{6,4}, {0,1}},
/* 4 */ {{6,1}, {0,1}},
/* 5 */ {{1,0}, {0,3}},
/* 6 */ {{246,4}, {189,4}},
/* 7 */ {{192,4}, {243,4}},
/* 8 */ {{4,3}, {0,1}},
/* 9 */ {{3,2}, {1,2}},
/* 10 */ {{6,4}, {3,4}},
/* 11 */ {{979.30487060546875f,561}, {1036.695068359375f,291}},
};
struct SortSet {
const SkPoint* ptData;
int ptCount;
double tStart;
double tEnd;
SkPoint endPt;
};
/*static const SortSet set1[] = {
{cubics[0], 4, 0.66666987081928919, 0.875, {0, 0}},
{lines[0], 2, 0.574070336, 0.388888889, {0, 0}},
{cubics[0], 4, 0.66666987081928919, 0.4050371120499307, {0, 0}},
{lines[0], 2, 0.574070336, 0.9140625, {0, 0}},
};
static const SortSet set1a[] = {
{cubics[0], 4, 0.666666667, 0.405037112, {4.58007812f,2.83203125f}},
{lines[0], 2, 0.574074074, 0.9140625, {4.44444466f,2.77777767f}},
};*/
static const SortSet set2[] = {
{cubics[0], 4, 0.666666667, 0.875, {0, 0}},
{lines[0], 2, 0.574074074, 0.388888889, {0, 0}},
{cubics[0], 4, 0.666666667, 0.405037112, {0, 0}},
{lines[0], 2, 0.574074074, 0.9140625, {0, 0}},
};
static const SortSet set3[] = {
{cubics[1], 4, 0, 1, {0, 0}},
{quads[0], 3, 1, 0, {0, 0}},
};
/*static const SortSet set4[] = {
{cubics[2], 4, 0.812114222, 1, {0, 0}},
{cubics[3], 4, 0.0684734759, 0, {0, 0}},
};*/
static const SortSet set5[] = {
{lines[1], 2, 0.777777778, 1, {0, 0}},
{quads[1], 3, 1, 4.34137342e-06, {0, 0}},
{lines[2], 2, 0, 1, {0, 0}},
};
static const SortSet set5a[] = {
{lines[1], 2, 0.777777778, 1, {306,590}},
{quads[1], 3, 1, 4.34137342e-06, {304.243195f,591.756775f}},
{lines[2], 2, 0, 1, {306,617}},
};
static const SortSet set6[] = {
{lines[3], 2, 0.407407407, 0.554627832, {0, 0}},
{cubics[4], 4, 0.666666667, 0.548022446, {0, 0}},
{lines[3], 2, 0.407407407, 0, {0, 0}},
{cubics[4], 4, 0.666666667, 1, {0, 0}},
};
static const SortSet set6a[] = {
{lines[3], 2, 0.407407407, 0.554627832, {2.6722331f,2.33611655f}},
{cubics[4], 4, 0.666666667, 0.548022446, {2.61642241f,2.83718514f}},
{lines[3], 2, 0.407407407, 0, {6,4}},
{cubics[4], 4, 0.666666667, 1, {6,4}},
};
static const SortSet set7[] = {
{cubics[5], 4, 0.545233342, 0.545454545, {0, 0}},
{cubics[6], 4, 0.484938134, 0.484805744, {0, 0}},
{cubics[5], 4, 0.545233342, 0, {0, 0}},
{cubics[6], 4, 0.484938134, 0.545454545, {0, 0}},
};
static const SortSet set8[] = {
{cubics[7], 4, 0.5, 0.522986744, {0, 0}},
{lines[4], 2, 0.75, 1, {0, 0}},
{cubics[7], 4, 0.5, 0, {0, 0}},
{lines[4], 2, 0.75, 0.737654321, {0, 0}},
};
static const SortSet set8a[] = {
{cubics[7], 4, 0.5, 0.522986744, {1.60668361f,0.965592742f}},
{lines[4], 2, 0.75, 1, {0,1}},
{cubics[7], 4, 0.5, 0, {0,1}},
{lines[4], 2, 0.75, 0.737654321, {1.57407403f,1}},
};
static const SortSet set9[] = {
{cubics[8], 4, 0.4, 1, {0, 0}},
{lines[5], 2, 0.36, 0, {0, 0}},
{cubics[8], 4, 0.4, 0.394675838, {0, 0}},
{lines[5], 2, 0.36, 0.363999782, {0, 0}},
};
static const SortSet set10[] = {
{lines[6], 2, 0.947368421, 1, {0, 0}},
{cubics[9], 4, 1, 0.500000357, {0, 0}},
{lines[7], 2, 0, 1, {0, 0}},
};
static const SortSet set11[] = {
{lines[3], 2, 0.75, 1, {0, 0}},
{cubics[10], 4, 0.5, 0.228744269, {0, 0}},
{lines[3], 2, 0.75, 0.627112191, {0, 0}},
{cubics[10], 4, 0.5, 0.6339746, {0, 0}},
};
static const SortSet set12[] = {
{cubics[12], 4, 0.5, 1, {0, 0}},
{lines[8], 2, 0.5, 1, {0, 0}},
{cubics[11], 4, 0.5, 0, {0, 0}},
{lines[9], 2, 0.5, 1, {0, 0}},
{cubics[12], 4, 0.5, 0, {0, 0}},
{lines[8], 2, 0.5, 0, {0, 0}},
{cubics[11], 4, 0.5, 1, {0, 0}},
{lines[9], 2, 0.5, 0, {0, 0}},
};
/*static const SortSet set13[] = {
{cubics[13], 4, 0.5, 0.400631046, {0, 0}},
{lines[10], 2, 0.791666667, 0.928, {0, 0}},
{lines[10], 2, 0.791666667, 0.333333333, {0, 0}},
{cubics[13], 4, 0.5, 0.866666667, {0, 0}},
};*/
static const SortSet set14[] = {
{quads[2], 3, 0.5, 0.310102051, {0, 0}},
{quads[3], 3, 0.5, 0.2, {0, 0}},
{quads[3], 3, 0.5, 0.770156212, {0, 0}},
{quads[2], 3, 0.5, 0.7, {0, 0}},
};
/*static const SortSet set15[] = {
{cubics[14], 4, 0.93081374, 1, {0, 0}},
{cubics[15], 4, 0.188518131, 0, {0, 0}},
{cubics[14], 4, 0.93081374, 0, {0, 0}},
};*/
static const SortSet set16[] = {
{cubics[17], 4, 0.0682619216, 0, {130.042755f,11417.4131f}},
{cubics[16], 4, 0.812302088, 1, {130,11417}},
{cubics[17], 4, 0.0682619216, 1, {132,11419}},
};
static const SortSet set17[] = {
{lines[11], 2, 0.888889581, 1, {0, 0}},
{cubics[18], 4, 0.999996241, 0, {0, 0}},
{lines[11], 2, 0.888889581, 0, {0, 0}},
{cubics[18], 4, 0.999996241, 1, {0, 0}},
};
struct SortSetTests {
const char* name;
const SortSet* set;
size_t count;
SkPoint startPt;
};
#define TEST_ENTRY(name) #name, name, SK_ARRAY_COUNT(name)
static const SortSetTests tests[] = {
{ TEST_ENTRY(set17), {0, 0}},
{ TEST_ENTRY(set16), {130.090179f,11417.5957f} },
// { TEST_ENTRY(set15), {0, 0}},
{ TEST_ENTRY(set14), {0, 0}},
// { TEST_ENTRY(set13), {0, 0}},
{ TEST_ENTRY(set12), {0, 0}},
{ TEST_ENTRY(set11), {0, 0}},
{ TEST_ENTRY(set10), {0, 0}},
{ TEST_ENTRY(set9), {0, 0}},
{ TEST_ENTRY(set6a), {3.55555558f,2.77777767f} },
{ TEST_ENTRY(set8a), {1.5f,1} },
{ TEST_ENTRY(set8), {0, 0}},
{ TEST_ENTRY(set7), {0, 0}},
{ TEST_ENTRY(set6a), {3.55555558f,2.77777767f} },
{ TEST_ENTRY(set6), {0, 0}},
{ TEST_ENTRY(set5a), {306,596} },
{ TEST_ENTRY(set5), {0, 0}},
// { TEST_ENTRY(set4), {0, 0}},
{ TEST_ENTRY(set3), {0, 0}},
{ TEST_ENTRY(set2), {0, 0}},
// { TEST_ENTRY(set1a), {3.70370364f,3.14814806f} },
// { TEST_ENTRY(set1), {0, 0}},
};
#undef TEST_ENTRY
static void setup(const SortSet* set, const size_t idx,
SkOpSegment* seg, int* ts, const SkPoint& startPt) {
SkPoint start, end;
const SkPoint* data = set[idx].ptData;
bool useIntersectPt = startPt.fX != 0 || startPt.fY != 0;
if (useIntersectPt) {
start = startPt;
end = set[idx].endPt;
}
switch(set[idx].ptCount) {
case 2: {
SkASSERT(ValidPoints(data, 2));
seg->addLine(data, false, false);
SkDLine dLine;
dLine.set(set[idx].ptData);
SkASSERT(ValidLine(dLine));
if (useIntersectPt) {
break;
}
start = dLine.ptAtT(set[idx].tStart).asSkPoint();
end = dLine.ptAtT(set[idx].tEnd).asSkPoint();
} break;
case 3: {
SkASSERT(ValidPoints(data, 3));
seg->addQuad(data, false, false);
SkDQuad dQuad;
dQuad.set(set[idx].ptData);
SkASSERT(ValidQuad(dQuad));
if (useIntersectPt) {
break;
}
start = dQuad.ptAtT(set[idx].tStart).asSkPoint();
end = dQuad.ptAtT(set[idx].tEnd).asSkPoint();
} break;
case 4: {
SkASSERT(ValidPoints(data, 4));
seg->addCubic(data, false, false);
SkDCubic dCubic;
dCubic.set(set[idx].ptData);
SkASSERT(ValidCubic(dCubic));
if (useIntersectPt) {
break;
}
start = dCubic.ptAtT(set[idx].tStart).asSkPoint();
end = dCubic.ptAtT(set[idx].tEnd).asSkPoint();
} break;
}
double tStart = set[idx].tStart;
double tEnd = set[idx].tEnd;
seg->addT(NULL, start, tStart);
seg->addT(NULL, end, tEnd);
if (tStart != 0 && tEnd != 0) {
seg->addT(NULL, set[idx].ptData[0], 0);
}
if (tStart != 1 && tEnd != 1) {
seg->addT(NULL, set[idx].ptData[set[idx].ptCount - 1], 1);
}
int tIndex = 0;
ts[0] = 0;
ts[1] = 1;
do {
if (seg->t(tIndex) == set[idx].tStart) {
ts[0] = tIndex;
}
if (seg->t(tIndex) == set[idx].tEnd) {
ts[1] = tIndex;
}
if (seg->t(tIndex) >= 1) {
break;
}
} while (++tIndex);
}
static void testOne(skiatest::Reporter* reporter, const SortSetTests& test) {
SkTDArray<SkOpAngle> angles;
bool unsortable = false;
bool unorderable = false;
SkTArray<SkOpSegment> segs;
for (size_t idx = 0; idx < test.count; ++idx) {
int ts[2];
const SortSet* set = test.set;
SkOpSegment& seg = segs.push_back();
setup(set, idx, &seg, ts, test.startPt);
SkOpAngle* angle = angles.append();
angle->set(&seg, ts[0], ts[1]);
#if DEBUG_ANGLE
angle->setID(idx);
#endif
if (angle->unsortable()) {
#if DEBUG_ANGLE
SkDebugf("%s test[%s]: angle[%d] unsortable\n", __FUNCTION__, test.name, idx);
#endif
unsortable = true;
}
if (angle->unorderable()) {
#if DEBUG_ANGLE
SkDebugf("%s test[%s]: angle[%d] unorderable\n", __FUNCTION__, test.name, idx);
#endif
unorderable = true;
}
reporter->bumpTestCount();
}
if (unsortable || unorderable) {
return;
}
#if DEBUG_ANGLE
SkDebugf("%s test[%s]\n", __FUNCTION__, test.name);
#endif
for (size_t idxL = 0; idxL < test.count; ++idxL) {
const SkOpAngle& first = angles[idxL];
for (size_t idxG = 0; idxG < test.count; ++idxG) {
if (idxL == idxG) {
continue;
}
const SkOpAngle& second = angles[idxG];
bool compare = first < second;
if (idxL < idxG) {
if (!compare) {
SkDebugf("%s test[%s]: first[%d] > second[%d]\n", __FUNCTION__,
test.name, idxL, idxG);
compare = first < second;
}
REPORTER_ASSERT(reporter, compare);
} else {
SkASSERT(idxL > idxG);
if (compare) {
SkDebugf("%s test[%s]: first[%d] < second[%d]\n", __FUNCTION__,
test.name, idxL, idxG);
compare = first < second;
}
REPORTER_ASSERT(reporter, !compare);
}
compare = second < first;
if (idxL < idxG) {
if (compare) {
SkDebugf("%s test[%s]: second[%d] < first[%d]\n", __FUNCTION__,
test.name, idxL, idxG);
compare = second < first;
}
REPORTER_ASSERT(reporter, !compare);
} else {
SkASSERT(idxL > idxG);
if (!compare) {
SkDebugf("%s test[%s]: second[%d] > first[%d]\n", __FUNCTION__,
test.name, idxL, idxG);
compare = second < first;
}
REPORTER_ASSERT(reporter, compare);
}
}
}
}
static void PathOpsAngleTest(skiatest::Reporter* reporter) {
for (size_t index = 0; index < SK_ARRAY_COUNT(tests); ++index) {
const SortSetTests& test = tests[index];
testOne(reporter, test);
reporter->bumpTestCount();
}
}
static void PathOpsAngleTestOne(skiatest::Reporter* reporter) {
size_t index = 0;
const SortSetTests& test = tests[index];
testOne(reporter, test);
}
#if 0
static int find_slop(double x, double y, double rx, double ry) {
int slopBits = 0;
bool less1, less2;
double absX = fabs(x);
double absY = fabs(y);
double length = absX < absY ? absX / 2 + absY : absX + absY / 2;
int exponent;
(void) frexp(length, &exponent);
double epsilon = ldexp(FLT_EPSILON, exponent);
do {
// get the length as the larger plus half the smaller (both same signs)
// find the ulps of the length
// compute the offsets from there
double xSlop = epsilon * slopBits;
double ySlop = x * y < 0 ? -xSlop : xSlop; // OPTIMIZATION: use copysign / _copysign ?
double x1 = x - xSlop;
double y1 = y + ySlop;
double x_ry1 = x1 * ry;
double rx_y1 = rx * y1;
less1 = x_ry1 < rx_y1;
double x2 = x + xSlop;
double y2 = y - ySlop;
double x_ry2 = x2 * ry;
double rx_y2 = rx * y2;
less2 = x_ry2 < rx_y2;
} while (less1 == less2 && ++slopBits);
return slopBits;
}
// from http://stackoverflow.com/questions/1427422/cheap-algorithm-to-find-measure-of-angle-between-vectors
static double diamond_angle(double y, double x)
{
if (y >= 0)
return (x >= 0 ? y/(x+y) : 1-x/(-x+y));
else
return (x < 0 ? 2-y/(-x-y) : 3+x/(x-y));
}
static const double slopTests[][4] = {
// x y rx ry
{-0.058554756452593892, -0.18804585843827226, -0.018568569646021160, -0.059615294434479438},
{-0.0013717412948608398, 0.0041152238845825195, -0.00045837944195925573, 0.0013753175735478074},
{-2.1033774145221198, -1.4046019261273715e-008, -0.70062688352066704, -1.2706324683777995e-008},
};
static void PathOpsAngleFindSlop(skiatest::Reporter* reporter) {
for (size_t index = 0; index < SK_ARRAY_COUNT(slopTests); ++index) {
const double* slopTest = slopTests[index];
double x = slopTest[0];
double y = slopTest[1];
double rx = slopTest[2];
double ry = slopTest[3];
SkDebugf("%s xy %d=%d\n", __FUNCTION__, (int) index, find_slop(x, y, rx, ry));
SkDebugf("%s rxy %d=%d\n", __FUNCTION__, (int) index, find_slop(rx, ry, x, y));
double angle = diamond_angle(y, x);
double rAngle = diamond_angle(ry, rx);
double diff = fabs(angle - rAngle);
SkDebugf("%s diamond xy=%1.9g rxy=%1.9g diff=%1.9g factor=%d\n", __FUNCTION__,
angle, rAngle, diff, (int) (diff / FLT_EPSILON));
}
}
#endif
#include "TestClassDef.h"
DEFINE_TESTCLASS_SHORT(PathOpsAngleTest)
DEFINE_TESTCLASS_SHORT(PathOpsAngleTestOne)
// DEFINE_TESTCLASS_SHORT(PathOpsAngleFindSlop)