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/*
* Copyright 2015 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 "SkGeometry.h"
#include "SkIntersections.h"
#include "Test.h"
/*
manually compute the intersection of a pair of circles and see if the conic intersection matches
given two circles
construct a line connecting their centers
*/
static const SkDConic testSet[] = {
{{{{-4,1}, {-4,5}, {0,5}}}, 0.707106769f},
{{{{-3,4}, {-3,1}, {0,1}}}, 0.707106769f},
{{{{0, 0}, {0, 1}, {1, 1}}}, 0.5f},
{{{{1, 0}, {0, 0}, {0, 1}}}, 0.5f},
};
const int testSetCount = (int) SK_ARRAY_COUNT(testSet);
static void oneOff(skiatest::Reporter* reporter, const SkDConic& c1, const SkDConic& c2,
bool coin) {
SkASSERT(ValidConic(c1));
SkASSERT(ValidConic(c2));
SkIntersections intersections;
intersections.intersect(c1, c2);
if (coin && intersections.used() != 2) {
SkDebugf("");
}
REPORTER_ASSERT(reporter, !coin || intersections.used() == 2);
double tt1, tt2;
SkDPoint xy1, xy2;
for (int pt3 = 0; pt3 < intersections.used(); ++pt3) {
tt1 = intersections[0][pt3];
xy1 = c1.ptAtT(tt1);
tt2 = intersections[1][pt3];
xy2 = c2.ptAtT(tt2);
const SkDPoint& iPt = intersections.pt(pt3);
REPORTER_ASSERT(reporter, xy1.approximatelyEqual(iPt));
REPORTER_ASSERT(reporter, xy2.approximatelyEqual(iPt));
REPORTER_ASSERT(reporter, xy1.approximatelyEqual(xy2));
}
reporter->bumpTestCount();
}
static void oneOff(skiatest::Reporter* reporter, int outer, int inner) {
const SkDConic& c1 = testSet[outer];
const SkDConic& c2 = testSet[inner];
oneOff(reporter, c1, c2, false);
}
static void oneOffTests(skiatest::Reporter* reporter) {
for (int outer = 0; outer < testSetCount - 1; ++outer) {
for (int inner = outer + 1; inner < testSetCount; ++inner) {
oneOff(reporter, outer, inner);
}
}
}
DEF_TEST(PathOpsConicIntersectionOneOff, reporter) {
oneOff(reporter, 0, 1);
}
DEF_TEST(PathOpsConicIntersection, reporter) {
oneOffTests(reporter);
}
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