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shape ops work in progress

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git-svn-id: http://skia.googlecode.com/svn/trunk@4737 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
caryclark@google.com 2012-07-24 18:11:03 +00:00
parent 8f4fdc9968
commit afe56de636
3 changed files with 75 additions and 66 deletions
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134
experimental/Intersection/Simplify.cpp
View File

@ -40,13 +40,14 @@ const bool gRunTestsInOneThread = false;
#define DEBUG_MARK_DONE 0
#define DEBUG_PATH_CONSTRUCTION 0
#define DEBUG_SORT 0
#define DEBUG_WIND_BUMP 0
#define DEBUG_WINDING 0
#else
const bool gRunTestsInOneThread = true;
#define DEBUG_ACTIVE_SPANS 0
#define DEBUG_ACTIVE_SPANS 1
#define DEBUG_ADD_INTERSECTING_TS 0
#define DEBUG_ADD_T_PAIR 0
#define DEBUG_CONCIDENT 0
@ -55,6 +56,7 @@ const bool gRunTestsInOneThread = true;
#define DEBUG_MARK_DONE 1
#define DEBUG_PATH_CONSTRUCTION 1
#define DEBUG_SORT 1
#define DEBUG_WIND_BUMP 0
#define DEBUG_WINDING 1
#endif
@ -485,6 +487,10 @@ public:
return fEnd;
}
bool firstBump(int contourWinding, int sumWinding) const {
return sign() * sumWinding > 0;
}
bool isHorizontal() const {
return fDy == 0 && fDDy == 0 && fDDDy == 0;
}
@ -1223,13 +1229,19 @@ public:
// winding -1 means ccw, 1 means cw
// firstFind allows coincident edges to be treated differently
Segment* findNext(SkTDArray<Span*>& chase, int winding,
int contourWinding, int spanWinding,
int contourWinding, bool firstFind, bool active,
const int startIndex, const int endIndex, int& nextStart,
int& nextEnd, int& flipped, bool firstFind, bool active) {
int& nextEnd, int& spanWinding) {
int flipped = 1;
int sumWinding = winding + spanWinding;
if (sumWinding == 0) {
sumWinding = spanWinding;
}
bool insideContour = contourWinding && contourWinding * sumWinding < 0;
if (insideContour) {
sumWinding = contourWinding;
}
#if DEBUG_WINDING
SkDebugf("%s winding=%d contourWinding=%d spanWinding=%d sumWinding=%d\n",
__FUNCTION__, winding, contourWinding, spanWinding, sumWinding);
@ -1267,25 +1279,18 @@ public:
#if DEBUG_SORT
debugShowSort(sorted, firstIndex, contourWinding, sumWinding);
#endif
bool doBump = sorted[firstIndex]->firstBump(contourWinding, sumWinding);
#if DEBUG_WINDING
SkDebugf("%s sumWinding=%d sign=%d (%srewind)\n", __FUNCTION__,
sumWinding, sorted[firstIndex]->sign(),
sorted[firstIndex]->sign() * sumWinding > 0 ? "" : "no ");
SkDebugf("%s sumWinding=%d sign=%d (%sbump)\n", __FUNCTION__,
sumWinding, sorted[firstIndex]->sign(), doBump ? "" : "no ");
#endif
bool innerSwap = false;
bool innerSwap = active && (doBump || insideContour);
int startWinding = sumWinding;
// SkASSERT(SkSign32(sumWinding) == SkSign32(winding) || winding == 0);
if (sorted[firstIndex]->sign() * sumWinding > 0) {
int prior = rewind(sorted[firstIndex]);
if (doBump || insideContour) {
int prior = windBump(sorted[firstIndex]);
SkDebugf("%s prior=%d\n", __FUNCTION__, prior);
if (0 && winding && contourWinding) {
sumWinding += prior;
} else {
sumWinding -= prior;
}
if (active) {
innerSwap = true;
}
sumWinding -= prior;
}
int nextIndex = firstIndex + 1;
int lastIndex = firstIndex != 0 ? firstIndex : angleCount;
@ -1293,16 +1298,16 @@ public:
bool foundDone = false;
// iterate through the angle, and compute everyone's winding
bool firstEdge = true;
bool flopped = false;
Segment* nextSegment;
do {
if (nextIndex == angleCount) {
nextIndex = 0;
}
const Angle* nextAngle = sorted[nextIndex];
int maxWinding = sumWinding;
Segment* nextSegment = nextAngle->segment();
int windValue = nextSegment->windValue(nextAngle);
SkASSERT(windValue > 0);
sumWinding -= nextAngle->sign() * windValue;
nextSegment = nextAngle->segment();
sumWinding -= nextSegment->windBump(nextAngle);
SkASSERT(abs(sumWinding) <= gDebugMaxWindSum);
#if DEBUG_WINDING
SkDebugf("%s maxWinding=%d sumWinding=%d sign=%d\n", __FUNCTION__,
@ -1310,6 +1315,7 @@ public:
#endif
if (maxWinding * sumWinding < 0) {
flipped = -flipped;
flopped = true;
#if DEBUG_WINDING
SkDebugf("flipped sign %d %d\n", maxWinding, sumWinding);
#endif
@ -1328,7 +1334,7 @@ public:
if (!foundAngle || foundDone) {
foundAngle = nextAngle;
foundDone = nextSegment->done(*nextAngle);
if (flipped > 0 && maxWinding * startWinding < 0) {
if (!flopped && maxWinding * startWinding < 0) {
flipped = -flipped;
#if DEBUG_WINDING
SkDebugf("flopped sign %d %d\n", maxWinding, startWinding);
@ -1369,7 +1375,13 @@ public:
}
nextStart = foundAngle->start();
nextEnd = foundAngle->end();
return foundAngle->segment();
nextSegment = foundAngle->segment();
spanWinding = SkSign32(spanWinding) * flipped * nextSegment->windValue(
SkMin32(nextStart, nextEnd));
#if DEBUG_WINDING
SkDebugf("%s spanWinding=%d\n", __FUNCTION__, spanWinding);
#endif
return nextSegment;
}
int findStartingEdge(SkTDArray<Angle*>& sorted, int start, int end) {
@ -1749,7 +1761,7 @@ public:
}
void markWinding(int index, int winding) {
SkASSERT(!done());
// SkASSERT(!done());
double referenceT = fTs[index].fT;
int lesser = index;
while (--lesser >= 0 && referenceT - fTs[lesser].fT < FLT_EPSILON) {
@ -1825,15 +1837,6 @@ public:
fTs.reset();
}
int rewind(const Angle* angle) {
SkASSERT(angle->segment() == this);
const Span& span = fTs[SkMin32(angle->start(), angle->end())];
#if DEBUG_SORT
SkDebugf("%s offset=%d\n", __FUNCTION__, angle->sign() * span.fWindValue);
#endif
return angle->sign() * span.fWindValue;
}
// OPTIMIZATION: mark as debugging only if used solely by tests
const Span& span(int tIndex) const {
return fTs[tIndex];
@ -1857,6 +1860,16 @@ public:
return fVerb;
}
int windBump(const Angle* angle) const {
SkASSERT(angle->segment() == this);
const Span& span = fTs[SkMin32(angle->start(), angle->end())];
int result = angle->sign() * span.fWindValue;
#if DEBUG_WIND_BUMP
SkDebugf("%s bump=%d\n", __FUNCTION__, result);
#endif
return result;
}
int windSum(int tIndex) const {
return fTs[tIndex].fWindSum;
}
@ -1970,15 +1983,18 @@ public:
#if DEBUG_SORT
void debugShowSort(const SkTDArray<Angle*>& angles, int first,
int contourWinding, int sumWinding) {
int index = first;
int windSum = sumWinding;
const Angle& fAngle = *angles[first];
const Segment& fSegment = *fAngle.segment();
SkASSERT(&fSegment == this);
const Span& fSpan = fSegment.fTs[SkMin32(fAngle.start(), fAngle.end())];
if (fAngle.sign() * sumWinding < 0) {
windSum += fAngle.sign() * fSpan.fWindValue;
SkASSERT(angles[first]->segment() == this);
bool doBump = angles[first]->firstBump(contourWinding, sumWinding);
bool insideContour = contourWinding && contourWinding * sumWinding < 0;
int windSum = insideContour ? contourWinding : sumWinding;
int lastSum = windSum;
if (insideContour || doBump) {
windSum -= windBump(angles[first]);
} else {
lastSum += windBump(angles[first]);
}
int index = first;
bool firstTime = true;
do {
const Angle& angle = *angles[index];
const Segment& segment = *angle.segment();
@ -1987,8 +2003,12 @@ public:
const Span& sSpan = segment.fTs[start];
const Span& eSpan = segment.fTs[end];
const Span& mSpan = segment.fTs[SkMin32(start, end)];
int lastSum = windSum;
windSum -= angle.sign() * mSpan.fWindValue;
if (firstTime) {
firstTime = false;
} else {
lastSum = windSum;
windSum -= segment.windBump(&angle);
}
SkDebugf("%s [%d] id=%d start=%d (%1.9g,%,1.9g) end=%d (%1.9g,%,1.9g)"
" sign=%d windValue=%d winding: %d->%d (max=%d) done=%d\n",
__FUNCTION__, index, segment.fID, start, segment.xAtT(&sSpan),
@ -2951,9 +2971,8 @@ static int innerContourCheck(SkTDArray<Contour*>& contourList,
SkASSERT(winding != SK_MinS32);
windValue = test->windValue(angle);
#if 0
int firstSign = angle->sign();
if (firstSign * winding > 0) {
winding -= test->rewind(angle);
if (angle->firstBump(0, winding)) {
winding -= test->windBump(angle);
}
#endif
#if DEBUG_WINDING
@ -3056,11 +3075,9 @@ static Segment* findChase(SkTDArray<Span*>& chase, int& tIndex, int& endIndex,
angle->segment()->debugShowSort(sorted, firstIndex, contourWinding,
spanWinding);
#endif
int firstSign = angle->sign();
if (firstSign * spanWinding > 0) {
spanWinding -= angle->segment()->rewind(angle);
if (angle->firstBump(contourWinding, spanWinding)) {
spanWinding -= angle->segment()->windBump(angle);
}
// SkDebugf("%s firstSign=%d\n", __FUNCTION__, firstSign);
// we care about first sign and whether wind sum indicates this
// edge is inside or outside. Maybe need to pass span winding
// or first winding or something into this function?
@ -3076,10 +3093,8 @@ static Segment* findChase(SkTDArray<Span*>& chase, int& tIndex, int& endIndex,
}
const Angle* angle = sorted[nextIndex];
segment = angle->segment();
int windValue = segment->windValue(angle);
SkASSERT(windValue > 0);
int maxWinding = spanWinding;
spanWinding -= angle->sign() * windValue;
spanWinding -= segment->windBump(angle);
if (maxWinding * spanWinding < 0) {
SkDebugf("%s flipped sign %d %d\n", __FUNCTION__, maxWinding, spanWinding);
}
@ -3160,7 +3175,7 @@ static void bridge(SkTDArray<Contour*>& contourList, SkPath& simple) {
&& abs(winding) <= abs(spanWinding);
#if DEBUG_WINDING
if (abs(winding) > abs(spanWinding) && winding * spanWinding < 0) {
SkDebugf("%s *** unexpected active\n?", __FUNCTION__);
SkDebugf("%s *** unexpected active?\n", __FUNCTION__);
}
SkDebugf("%s active=%s winding=%d spanWinding=%d\n",
__FUNCTION__, active ? "true" : "false",
@ -3169,10 +3184,10 @@ static void bridge(SkTDArray<Contour*>& contourList, SkPath& simple) {
const SkPoint* firstPt = NULL;
do {
SkASSERT(!current->done());
int nextStart, nextEnd, flipped = 1;
int nextStart, nextEnd;
Segment* next = current->findNext(chaseArray, winding,
contourWinding, spanWinding, index, endIndex,
nextStart, nextEnd, flipped, firstTime, active);
contourWinding, firstTime, active, index, endIndex,
nextStart, nextEnd, spanWinding);
if (!next) {
break;
}
@ -3183,11 +3198,6 @@ static void bridge(SkTDArray<Contour*>& contourList, SkPath& simple) {
current = next;
index = nextStart;
endIndex = nextEnd;
spanWinding = SkSign32(spanWinding) * flipped * next->windValue(
SkMin32(nextStart, nextEnd));
#if DEBUG_WINDING
SkDebugf("%s spanWinding=%d\n", __FUNCTION__, spanWinding);
#endif
firstTime = false;
} while (*firstPt != lastPt && (active || !current->done()));
if (firstPt && active) {

5
experimental/Intersection/SimplifyFindNext_Test.cpp
View File

@ -32,11 +32,10 @@ static const SimplifyFindNextTest::Segment* testCommon(
SimplifyFindNextTest::Segment& segment = contours[0].debugSegments()[0];
SkPoint pts[2];
pts[0] = segment.xyAtT(&segment.span(endIndex));
int nextStart, nextEnd, flipped = 1;
int nextStart, nextEnd;
SkTDArray<SimplifyFindNextTest::Span*> chaseArray;
SimplifyFindNextTest::Segment* next = segment.findNext(chaseArray, winding,
winding, 0, startIndex, endIndex, nextStart, nextEnd, flipped,
true, true);
0, true, true, startIndex, endIndex, nextStart, nextEnd, winding);
pts[1] = next->xyAtT(&next->span(nextStart));
SkASSERT(pts[0] == pts[1]);
return next;

2
experimental/Intersection/SimplifyNew_Test.cpp
View File

@ -550,7 +550,7 @@ static void testLine55() {
testSimplifyx(path);
}
static void (*firstTest)() = 0;
static void (*firstTest)() = testLine55;
static struct {
void (*fun)();