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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "PathOpsExtendedTest.h"
#include "PathOpsTestCommon.h"
#include "SkGeometry.h"
#include "SkIntersections.h"
#include "SkPathOpsConic.h"
#include "SkPathOpsLine.h"
#include "SkReduceOrder.h"
#include "Test.h"
static struct lineConic {
ConicPts conic;
SkDLine line;
int result;
SkDPoint expected[2];
} lineConicTests[] = {
{
{{{{30.6499996,25.6499996}, {30.6499996,20.6499996}, {25.6499996,20.6499996}}}, 0.707107008f},
{{{25.6499996,20.6499996}, {45.6500015,20.6499996}}},
1,
{{25.6499996,20.6499996}, {0,0}}
},
};
static size_t lineConicTests_count = SK_ARRAY_COUNT(lineConicTests);
static int doIntersect(SkIntersections& intersections, const SkDConic& conic, const SkDLine& line,
bool& flipped) {
int result;
flipped = false;
if (line[0].fX == line[1].fX) {
double top = line[0].fY;
double bottom = line[1].fY;
flipped = top > bottom;
if (flipped) {
SkTSwap<double>(top, bottom);
}
result = intersections.vertical(conic, top, bottom, line[0].fX, flipped);
} else if (line[0].fY == line[1].fY) {
double left = line[0].fX;
double right = line[1].fX;
flipped = left > right;
if (flipped) {
SkTSwap<double>(left, right);
}
result = intersections.horizontal(conic, left, right, line[0].fY, flipped);
} else {
intersections.intersect(conic, line);
result = intersections.used();
}
return result;
}
static struct oneLineConic {
ConicPts conic;
SkDLine line;
} oneOffs[] = {
{{{{{30.6499996,25.6499996}, {30.6499996,20.6499996}, {25.6499996,20.6499996}}}, 0.707107008f},
{{{25.6499996,20.6499996}, {45.6500015,20.6499996}}}}
};
static size_t oneOffs_count = SK_ARRAY_COUNT(oneOffs);
static void testOneOffs(skiatest::Reporter* reporter) {
bool flipped = false;
for (size_t index = 0; index < oneOffs_count; ++index) {
const ConicPts& c = oneOffs[index].conic;
SkDConic conic;
conic.debugSet(c.fPts.fPts, c.fWeight);
SkASSERT(ValidConic(conic));
const SkDLine& line = oneOffs[index].line;
SkASSERT(ValidLine(line));
SkIntersections intersections;
int result = doIntersect(intersections, conic, line, flipped);
for (int inner = 0; inner < result; ++inner) {
double conicT = intersections[0][inner];
SkDPoint conicXY = conic.ptAtT(conicT);
double lineT = intersections[1][inner];
SkDPoint lineXY = line.ptAtT(lineT);
if (!conicXY.approximatelyEqual(lineXY)) {
conicXY.approximatelyEqual(lineXY);
SkDebugf("");
}
REPORTER_ASSERT(reporter, conicXY.approximatelyEqual(lineXY));
}
}
}
DEF_TEST(PathOpsConicLineIntersectionOneOff, reporter) {
testOneOffs(reporter);
}
DEF_TEST(PathOpsConicLineIntersection, reporter) {
for (size_t index = 0; index < lineConicTests_count; ++index) {
int iIndex = static_cast<int>(index);
const ConicPts& c = lineConicTests[index].conic;
SkDConic conic;
conic.debugSet(c.fPts.fPts, c.fWeight);
SkASSERT(ValidConic(conic));
const SkDLine& line = lineConicTests[index].line;
SkASSERT(ValidLine(line));
SkReduceOrder reducer;
SkPoint pts[3] = { conic.fPts.fPts[0].asSkPoint(), conic.fPts.fPts[1].asSkPoint(),
conic.fPts.fPts[2].asSkPoint() };
SkPoint reduced[3];
SkConic floatConic;
floatConic.set(pts, conic.fWeight);
SkPath::Verb order1 = SkReduceOrder::Conic(floatConic, reduced);
if (order1 != SkPath::kConic_Verb) {
SkDebugf("%s [%d] conic verb=%d\n", __FUNCTION__, iIndex, order1);
REPORTER_ASSERT(reporter, 0);
}
int order2 = reducer.reduce(line);
if (order2 < 2) {
SkDebugf("%s [%d] line order=%d\n", __FUNCTION__, iIndex, order2);
REPORTER_ASSERT(reporter, 0);
}
SkIntersections intersections;
bool flipped = false;
int result = doIntersect(intersections, conic, line, flipped);
REPORTER_ASSERT(reporter, result == lineConicTests[index].result);
if (intersections.used() <= 0) {
continue;
}
for (int pt = 0; pt < result; ++pt) {
double tt1 = intersections[0][pt];
REPORTER_ASSERT(reporter, tt1 >= 0 && tt1 <= 1);
SkDPoint t1 = conic.ptAtT(tt1);
double tt2 = intersections[1][pt];
REPORTER_ASSERT(reporter, tt2 >= 0 && tt2 <= 1);
SkDPoint t2 = line.ptAtT(tt2);
if (!t1.approximatelyEqual(t2)) {
SkDebugf("%s [%d,%d] x!= t1=%1.9g (%1.9g,%1.9g) t2=%1.9g (%1.9g,%1.9g)\n",
__FUNCTION__, iIndex, pt, tt1, t1.fX, t1.fY, tt2, t2.fX, t2.fY);
REPORTER_ASSERT(reporter, 0);
}
if (!t1.approximatelyEqual(lineConicTests[index].expected[0])
&& (lineConicTests[index].result == 1
|| !t1.approximatelyEqual(lineConicTests[index].expected[1]))) {
SkDebugf("%s t1=(%1.9g,%1.9g)\n", __FUNCTION__, t1.fX, t1.fY);
REPORTER_ASSERT(reporter, 0);
}
}
}
}
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