a461ff0866
git-svn-id: http://skia.googlecode.com/svn/trunk@5893 2bbb7eff-a529-9590-31e7-b0007b416f81
143 lines
6.1 KiB
C++
143 lines
6.1 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "CurveIntersection.h"
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#include "CurveUtilities.h"
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#include "Intersection_Tests.h"
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#include "Intersections.h"
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#include "QuadraticIntersection_TestData.h"
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#include "TestUtilities.h"
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#include "SkTypes.h"
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const int firstQuadIntersectionTest = 9;
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static void standardTestCases() {
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for (size_t index = firstQuadIntersectionTest; index < quadraticTests_count; ++index) {
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const Quadratic& quad1 = quadraticTests[index][0];
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const Quadratic& quad2 = quadraticTests[index][1];
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Quadratic reduce1, reduce2;
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int order1 = reduceOrder(quad1, reduce1);
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int order2 = reduceOrder(quad2, reduce2);
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if (order1 < 3) {
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printf("[%d] quad1 order=%d\n", (int) index, order1);
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}
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if (order2 < 3) {
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printf("[%d] quad2 order=%d\n", (int) index, order2);
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}
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if (order1 == 3 && order2 == 3) {
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Intersections intersections, intersections2;
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intersect(reduce1, reduce2, intersections);
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intersect2(reduce1, reduce2, intersections2);
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SkASSERT(intersections.used() == intersections2.used());
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if (intersections.intersected()) {
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for (int pt = 0; pt < intersections.used(); ++pt) {
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double tt1 = intersections.fT[0][pt];
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double tx1, ty1;
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xy_at_t(quad1, tt1, tx1, ty1);
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double tt2 = intersections.fT[1][pt];
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double tx2, ty2;
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xy_at_t(quad2, tt2, tx2, ty2);
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if (!approximately_equal(tx1, tx2)) {
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printf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
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__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
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}
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if (!approximately_equal(ty1, ty2)) {
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printf("%s [%d,%d] y!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
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__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
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}
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tt1 = intersections2.fT[0][pt];
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SkASSERT(approximately_equal(intersections.fT[0][pt], tt1));
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tt2 = intersections2.fT[1][pt];
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SkASSERT(approximately_equal(intersections.fT[1][pt], tt2));
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}
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}
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}
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}
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}
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static const Quadratic testSet[] = {
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{{369.8543701171875, 145.66734313964844}, {382.36788940429688, 121.28203582763672}, {406.21844482421875, 121.28203582763672}},
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{{369.96469116210938, 137.96672058105469}, {383.97555541992188, 121.28203582763672}, {406.2218017578125, 121.28203582763672}},
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{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}},
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{{369.962311, 137.976044}, {383.971893, 121.29287}, {406.216125, 121.29287}},
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{{400.121704, 149.468719}, {391.949493, 161.037186}, {391.949493, 181.202423}},
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{{391.946747, 181.839218}, {391.946747, 155.62442}, {406.115479, 138.855438}},
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{{360.048828125, 229.2578125}, {360.048828125, 224.4140625}, {362.607421875, 221.3671875}},
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{{362.607421875, 221.3671875}, {365.166015625, 218.3203125}, {369.228515625, 218.3203125}},
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{{8, 8}, {10, 10}, {8, -10}},
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{{8, 8}, {12, 12}, {14, 4}},
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{{8, 8}, {9, 9}, {10, 8}}
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};
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const size_t testSetCount = sizeof(testSet) / sizeof(testSet[0]);
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static void oneOffTest() {
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for (size_t outer = 0; outer < testSetCount - 1; ++outer) {
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for (size_t inner = outer + 1; inner < testSetCount; ++inner) {
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const Quadratic& quad1 = testSet[outer];
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const Quadratic& quad2 = testSet[inner];
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double tt1, tt2;
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Intersections intersections2;
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intersect2(quad1, quad2, intersections2);
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for (int pt = 0; pt < intersections2.used(); ++pt) {
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tt1 = intersections2.fT[0][pt];
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double tx1, ty1;
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xy_at_t(quad1, tt1, tx1, ty1);
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int pt2 = intersections2.fFlip ? intersections2.used() - pt - 1 : pt;
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tt2 = intersections2.fT[1][pt2];
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double tx2, ty2;
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xy_at_t(quad2, tt2, tx2, ty2);
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if (!approximately_equal(tx1, tx2)) {
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SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
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__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
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SkASSERT(0);
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}
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if (!approximately_equal(ty1, ty2)) {
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SkDebugf("%s [%d,%d] y!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
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__FUNCTION__, (int)index, pt, tt1, tx1, ty1, tt2, tx2, ty2);
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SkASSERT(0);
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}
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SkDebugf("%s [%d][%d] t1=%1.9g (%1.9g, %1.9g) t2=%1.9g\n", __FUNCTION__,
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outer, inner, tt1, tx1, tx2, tt2);
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}
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}
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}
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}
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static const Quadratic coincidentTestSet[] = {
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{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}},
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{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}},
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{{8, 8}, {10, 10}, {8, -10}},
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{{8, -10}, {10, 10}, {8, 8}},
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};
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const size_t coincidentTestSetCount = sizeof(coincidentTestSet) / sizeof(coincidentTestSet[0]);
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static void coincidentTest() {
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for (size_t testIndex = 0; testIndex < coincidentTestSetCount - 1; testIndex += 2) {
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const Quadratic& quad1 = coincidentTestSet[testIndex];
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const Quadratic& quad2 = coincidentTestSet[testIndex + 1];
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Intersections intersections2;
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intersect2(quad1, quad2, intersections2);
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SkASSERT(intersections2.coincidentUsed() == 2);
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for (int pt = 0; pt < intersections2.coincidentUsed(); ++pt) {
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double tt1 = intersections2.fT[0][pt];
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double tt2 = intersections2.fT[1][pt];
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// SkASSERT(approximately_equal(intersections.fT[0][pt], tt1));
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// SkASSERT(approximately_equal(intersections.fT[1][pt], tt2));
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}
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}
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}
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void QuadraticIntersection_Test() {
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oneOffTest();
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coincidentTest();
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standardTestCases();
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}
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