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skia2/tests/PathOpsQuadIntersectionTest.cpp

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Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
/*
* 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 "PathOpsQuadIntersectionTestData.h"
harden and speed up path op unit tests PathOps tests internal routines direcctly. Check to make sure that test points, lines, quads, curves, triangles, and bounds read from arrays are valid (i.e., don't contain NaN) before calling the test function. Repurpose the test flags. - make 'v' verbose test region output against path output - make 'z' single threaded (before it made it multithreaded) The latter change speeds up tests run by the buildbot by 2x to 3x. BUG= Review URL: https://codereview.chromium.org/19374003 git-svn-id: http://skia.googlecode.com/svn/trunk@10107 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-16 16:11:16 +00:00
#include "PathOpsTestCommon.h"
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
#include "SkIntersections.h"
#include "SkPathOpsRect.h"
#include "SkReduceOrder.h"
#include "Test.h"
static void standardTestCases(skiatest::Reporter* reporter) {
bool showSkipped = false;
for (size_t index = 0; index < quadraticTests_count; ++index) {
const SkDQuad& quad1 = quadraticTests[index][0];
harden and speed up path op unit tests PathOps tests internal routines direcctly. Check to make sure that test points, lines, quads, curves, triangles, and bounds read from arrays are valid (i.e., don't contain NaN) before calling the test function. Repurpose the test flags. - make 'v' verbose test region output against path output - make 'z' single threaded (before it made it multithreaded) The latter change speeds up tests run by the buildbot by 2x to 3x. BUG= Review URL: https://codereview.chromium.org/19374003 git-svn-id: http://skia.googlecode.com/svn/trunk@10107 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-16 16:11:16 +00:00
SkASSERT(ValidQuad(quad1));
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
const SkDQuad& quad2 = quadraticTests[index][1];
harden and speed up path op unit tests PathOps tests internal routines direcctly. Check to make sure that test points, lines, quads, curves, triangles, and bounds read from arrays are valid (i.e., don't contain NaN) before calling the test function. Repurpose the test flags. - make 'v' verbose test region output against path output - make 'z' single threaded (before it made it multithreaded) The latter change speeds up tests run by the buildbot by 2x to 3x. BUG= Review URL: https://codereview.chromium.org/19374003 git-svn-id: http://skia.googlecode.com/svn/trunk@10107 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-16 16:11:16 +00:00
SkASSERT(ValidQuad(quad2));
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
SkReduceOrder reduce1, reduce2;
int order1 = reduce1.reduce(quad1, SkReduceOrder::kFill_Style);
int order2 = reduce2.reduce(quad2, SkReduceOrder::kFill_Style);
if (order1 < 3) {
if (showSkipped) {
SkDebugf("[%d] quad1 order=%d\n", static_cast<int>(index), order1);
}
}
if (order2 < 3) {
if (showSkipped) {
SkDebugf("[%d] quad2 order=%d\n", static_cast<int>(index), order2);
}
}
if (order1 == 3 && order2 == 3) {
SkIntersections intersections;
intersections.intersect(quad1, quad2);
if (intersections.used() > 0) {
for (int pt = 0; pt < intersections.used(); ++pt) {
double tt1 = intersections[0][pt];
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
SkDPoint xy1 = quad1.ptAtT(tt1);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
double tt2 = intersections[1][pt];
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
SkDPoint xy2 = quad2.ptAtT(tt2);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
if (!xy1.approximatelyEqual(xy2)) {
SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
__FUNCTION__, static_cast<int>(index), pt, tt1, xy1.fX, xy1.fY,
tt2, xy2.fX, xy2.fY);
REPORTER_ASSERT(reporter, 0);
}
}
}
}
}
}
static const SkDQuad testSet[] = {
Sanitizing source files in Housekeeper-Nightly git-svn-id: http://skia.googlecode.com/svn/trunk@12101 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-11-02 07:02:02 +00:00
{{{164, -40}, {231.51681518554687, -40}, {279.25839233398438, 7.7416000366210938}}},
{{{279.25839233398438, 7.7416000366210938}, {275.2164306640625, 3.6996400356292725}, {271.03286743164062, -5.3290705182007514e-015}}},
pathops work in progress BUG= Review URL: https://codereview.chromium.org/52653002 git-svn-id: http://skia.googlecode.com/svn/trunk@12089 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-11-01 17:36:03 +00:00
Sanitizing source files in Housekeeper-Nightly git-svn-id: http://skia.googlecode.com/svn/trunk@11585 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-10-03 07:01:37 +00:00
{{{2.9999997378517067, 1.9737872594345709}, {2.9999997432230918, 1.9739647181863822}, {1.2414155459263587e-163, 5.2957833941332142e-315}}},
{{{2.9999047485265304, 1.9739164225694723}, {3.0000947268526112, 1.9738379076623633}, {0.61149411077591886, 0.0028382324376270418}}},
{{{2.9999996843656502, 1.9721416019045801}, {2.9999997725237835, 1.9749798343422071},
{5.3039068214821359e-315, 8.9546185262775165e-307}}},
{{{2.9984791443874976, 1.974505741312242}, {2.9999992702127476, 1.9738772171479178},
{3.0015187977319759, 1.9732495027303418}}},
path ops work in progress make more skps work remove edit files BUG= Review URL: https://codereview.chromium.org/23542056 git-svn-id: http://skia.googlecode.com/svn/trunk@11570 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-10-02 14:49:34 +00:00
Sanitizing source files in Housekeeper-Nightly git-svn-id: http://skia.googlecode.com/svn/trunk@10096 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-16 07:00:56 +00:00
{{{0.647069409,2.97691634}, {0.946860918,3.17625612}, {1.46875407,2.65105457}}},
{{{0,1}, {0.723699095,2.82756208}, {1.08907197,2.97497449}}},
path ops near exact Modify line intersections to first - match exact ends - compute intersections - match near ends where the exact ends are preferred, then near matches, then computed matches. This pulls matches towards existing end points when possible, and keeps intersection distances consistent with different line/line line/quad and line/cubic computations. BUG= Review URL: https://codereview.chromium.org/19183003 git-svn-id: http://skia.googlecode.com/svn/trunk@10073 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-15 13:29:13 +00:00
path ops -- rewrite angle sort This is a major change resulting from a minor tweak. In the old code, the intersection point of two curves was shared between them, but the intersection points and end points of sorted edges was computed directly from the intersection T value. In this CL, both intersection points and sorted points are the same, and intermediate control points are computed to preserve their slope. The sort itself has been completely rewritten to be more robust and remove 'magic' checks, conditions that empirically worked but couldn't be rationalized. This CL was triggered by errors generated computing the clips of SKP files. At this point, all 73M standard tests work and at least the first troublesome SKPs work. Review URL: https://codereview.chromium.org/15338003 git-svn-id: http://skia.googlecode.com/svn/trunk@9432 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-06-04 17:59:42 +00:00
{{{131.37418,11414.9825}, {130.28798,11415.9328}, {130.042755,11417.4131}}},
{{{130.585787,11418.4142}, {130.021447,11417.8498}, {130,11417}}},
{{{130.73167037963867, 11418.546386718750}, {131.26360225677490, 11418.985778808592},
{132, 11419 }}},
{{{132, 11419}, {131.15012693405151, 11418.978546142578},
{130.58578681945801, 11418.414184570313}}},
{{{132, 11419},
{130.73167037963867, 11418.546386718750}, {131.26360225677490, 11418.985778808592}}},
{{{131.15012693405151, 11418.978546142578},
{130.58578681945801, 11418.414184570313}, {132, 11419}}},
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
{{{3.0774019473063863, 3.35198509346713}, {3.0757503498668397, 3.327320623945933},
{3.0744102085015879, 3.3025879417907196}}},
{{{3.053913680774329, 3.3310471586283938}, {3.0758730889691694, 3.3273466070370152},
{3.0975671980059394, 3.3235031316554351}}},
{{{3.39068129, 4.44939202}, {3.03659239, 3.81843234}, {3.06844529, 3.02100922}}},
{{{2.10714698, 3.44196686}, {3.12180288, 3.38575704}, {3.75968569, 3.1281838}}},
{{{2.74792918, 4.77711896}, {2.82236867, 4.23882547}, {2.82848144, 3.63729341}}},
{{{2.62772567, 3.64823958}, {3.46652495, 3.64258364}, {4.1425079, 3.48623815}}},
{{{1.34375, 2.03125}, {2.2734375, 2.6640625}, {3.25, 3.25}}},
{{{3.96875, 4.65625}, {3.3359375, 3.7265625}, {2.75, 2.75}}},
{{{0, 1}, {0.324417544, 2.27953848}, {0.664376547, 2.58940267}}},
{{{1, 2}, {0.62109375, 2.70703125}, {0.640625, 2.546875}}},
{{{1, 2}, {0.984375, 2.3359375}, {1.0625, 2.15625}}},
{{{0, 1}, {0.983539095, 2.30041152}, {1.47325103, 2.61316872}}},
{{{4.09011926, 2.20971038}, {4.74608133, 1.9335932}, {5.02469918, 2.00694987}}},
{{{2.79472921, 1.73568666}, {3.36246373, 1.21251209}, {5, 2}}},
{{{1.80814127, 2.41537795}, {2.23475077, 2.05922313}, {3.16529668, 1.98358763}}},
{{{2.16505631, 2.55782454}, {2.40541285, 2.02193091}, {2.99836023, 1.68247638}}},
{{{3, 1.875}, {3.375, 1.54296875}, {3.375, 1.421875}}},
{{{3.375, 1.421875}, {3.3749999999999996, 1.3007812499999998}, {3, 2}}},
{{{3.34, 8.98}, {2.83363281, 9.4265625}, {2.83796875, 9.363125}}},
{{{2.83796875, 9.363125}, {2.84230469, 9.2996875}, {3.17875, 9.1725}}},
{{{2.7279999999999998, 3.024}, {2.5600000000000005, 2.5600000000000005},
{2.1520000000000001, 1.8560000000000001}}},
{{{0.66666666666666652, 1.1481481481481481}, {1.3333333333333326, 1.3333333333333335},
{2.6666666666666665, 2.1851851851851851}}},
{{{2.728, 3.024}, {2.56, 2.56}, {2.152, 1.856}}},
{{{0.666666667, 1.14814815}, {1.33333333, 1.33333333}, {2.66666667, 2.18518519}}},
{{{0.875, 1.5}, {1.03125, 1.11022302e-16}, {1, 0}}},
{{{0.875, 0.859375}, {1.6875, 0.73046875}, {2.5, 0.625}}},
{{{1.64451042, 0.0942001592}, {1.53635465, 0.00152863961}, {1, 0}}},
{{{1.27672209, 0.15}, {1.32143477, 9.25185854e-17}, {1, 0}}},
{{{0, 0}, {0.51851851851851849, 1.0185185185185186}, {1.2592592592592591, 1.9259259259259258}}},
{{{1.2592592592592593, 1.9259259259259265}, {0.51851851851851893, 1.0185185185185195}, {0, 0}}},
{{{1.93281168, 2.58856757}, {2.38543691, 2.7096125}, {2.51967352, 2.34531784}}},
{{{2.51967352, 2.34531784}, {2.65263731, 2.00639194}, {3.1212119, 1.98608967}}},
{{{2.09544533, 2.51981963}, {2.33331524, 2.25252128}, {2.92003302, 2.39442311}}},
{{{0.924337655, 1.94072717}, {1.25185043, 1.52836494}, {1.71793901, 1.06149951}}},
{{{0.940798831, 1.67439357}, {1.25988251, 1.39778567}, {1.71791672, 1.06650313}}},
{{{0.924337655, 1.94072717}, {1.39158994, 1.32418496}, {2.14967426, 0.687365435}}},
{{{0.940798831, 1.67439357}, {1.48941875, 1.16280321}, {2.47884711, 0.60465921}}},
{{{1.7465749139282332, 1.9930452039527999}, {1.8320006564080331, 1.859481345189089},
{1.8731035127758437, 1.6344055934266613}}},
{{{1.8731035127758437, 1.6344055934266613}, {1.89928170345231, 1.5006405518943067},
{1.9223833226085514, 1.3495796165215643}}},
{{{1.74657491, 1.9930452}, {1.87407679, 1.76762853}, {1.92238332, 1.34957962}}},
{{{0.60797907, 1.68776977}, {1.0447864, 1.50810914}, {1.87464474, 1.63655092}}},
{{{1.87464474, 1.63655092}, {2.70450308, 1.76499271}, {4, 3}}},
{{{1.2071879545809394, 0.82163474041730045}, {1.1534203513372994, 0.52790870069930229},
{1.0880000000000001, 0.29599999999999982}}}, //t=0.63155333662549329,0.80000000000000004
{{{0.33333333333333326, 0.81481481481481488}, {0.63395173631977997, 0.68744136726313931},
{1.205684411948591, 0.81344322326274499}}},
{{{0.33333333333333326, 0.81481481481481488}, {0.63396444791444551, 0.68743368362444768},
{1.205732763658403, 0.81345617746834109}}}, //t=0.33333333333333331, 0.63396444791444551
{{{1.205684411948591, 0.81344322326274499}, {1.2057085875611198, 0.81344969999329253},
{1.205732763658403, 0.81345617746834109}}},
{{{1.20718795, 0.82163474}, {1.15342035, 0.527908701}, {1.088, 0.296}}},
{{{1.20568441, 0.813443223}, {1.20570859, 0.8134497}, {1.20573276, 0.813456177}}},
{{{41.5072916, 87.1234036}, {28.2747836, 80.9545395}, {23.5780771, 69.3344126}}},
{{{72.9633878, 95.6593007}, {42.7738746, 88.4730382}, {31.1932785, 80.2458029}}},
{{{31.1663962, 54.7302484}, {31.1662882, 54.7301074}, {31.1663969, 54.7302485}}},
{{{26.0404936, 45.4260361}, {27.7887523, 33.1863051}, {40.8833242, 26.0301855}}},
{{{29.9404074, 49.1672596}, {44.3131071, 45.3915253}, {58.1067559, 59.5061814}}},
{{{72.6510251, 64.2972928}, {53.6989659, 60.1862397}, {35.2053722, 44.8391126}}},
{{{52.14807018377202, 65.012420045148644}, {44.778669050208237, 66.315562705604378},
{51.619118408823567, 63.787827046262684}}},
{{{30.004993234763383, 93.921296668202288}, {53.384822003076991, 60.732180341802753},
{58.652998934338584, 43.111073088306185}}},
{{{80.897794748143198, 49.236332042718459}, {81.082078218891212, 64.066749904488631},
{69.972305057149981, 72.968595519850993}}},
{{{72.503745601281395, 32.952320736577882}, {88.030880716061645, 38.137194847810164},
{73.193774825517906, 67.773492479591397}}},
{{{67.426548091427676, 37.993772624988935}, {51.129513170665035, 57.542281234563646},
{44.594748190899189, 65.644267382683879}}},
{{{61.336508189019057, 82.693132843213675}, {54.825078921449354, 71.663932799212432},
{47.727444217558926, 61.4049645128392}}},
{{{67.4265481, 37.9937726}, {51.1295132, 57.5422812}, {44.5947482, 65.6442674}}},
{{{61.3365082, 82.6931328}, {54.8250789, 71.6639328}, {47.7274442, 61.4049645}}},
{{{53.774852327053594, 53.318060789841951}, {45.787877803416805, 51.393492026284981},
{46.703936967162392, 53.06860709822206}}},
{{{46.703936967162392, 53.06860709822206}, {47.619996130907957, 54.74372217015916},
{53.020051653535361, 48.633140968832024}}},
{{{50.934805397717923, 51.52391952648901}, {56.803308902971423, 44.246234610627596},
{69.776888596721406, 40.166645096692555}}},
{{{50.230212796400401, 38.386469101526998}, {49.855620812184917, 38.818990392153609},
{56.356567496227363, 47.229909093319407}}},
{{{36.148792695174222, 70.336952793070424}, {36.141613037691357, 70.711654739870085},
{36.154708826402597, 71.088492662905836}}},
{{{35.216235592661825, 70.580199617313212}, {36.244476835123969, 71.010897787304074},
{37.230244263238326, 71.423156953613102}}},
// this pair is nearly coincident, and causes the quartic code to produce bad
// data. Mathematica doesn't think they touch. Graphically, I can't tell.
// it may not be so bad to pretend that they don't touch, if I can detect that
{{{369.848602, 145.680267}, {382.360413, 121.298294}, {406.207703, 121.298294}}},
{{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}}},
{{{33.567436351153468, 62.336347586395924}, {35.200980274619084, 65.038561460144479},
{36.479571811084995, 67.632178905412445}}},
{{{41.349524945572696, 67.886658677862641}, {39.125562529359087, 67.429772735149214},
{35.600314083992416, 66.705372160552685}}},
{{{67.25299631583178, 21.109080184767524}, {43.617595267398613, 33.658034168577529},
{33.38371819435676, 44.214192553988745}}},
{{{40.476838859398541, 39.543209911285999}, {36.701186108431131, 34.8817994016458},
{30.102144288878023, 26.739063172945315}}},
{{{25.367434474345036, 50.4712103169743}, {17.865013304933097, 37.356741010559439},
{16.818988838905465, 37.682915484123129}}},
{{{16.818988838905465, 37.682915484123129}, {15.772964372877833, 38.009089957686811},
{20.624104547604965, 41.825131596683121}}},
{{{26.440225044088567, 79.695009812848298}, {26.085525979582247, 83.717928354134784},
{27.075079976297072, 84.820633667838905}}},
{{{27.075079976297072, 84.820633667838905}, {28.276546859574015, 85.988574184029034},
{25.649263209500006, 87.166762066617025}}},
{{{34.879150914024962, 83.862726601601125}, {35.095810134304429, 83.693473210169543},
{35.359284111931586, 83.488069234177502}}},
{{{54.503204203015471, 76.094098492518242}, {51.366889541918894, 71.609856061299155},
{46.53086955445437, 69.949863036494207}}},
{{{0, 0}, {1, 0}, {0, 3}}},
{{{1, 0}, {0, 1}, {1, 1}}},
{{{369.961151, 137.980698}, {383.970093, 121.298294}, {406.213287, 121.298294}}},
{{{353.2948, 194.351074}, {353.2948, 173.767563}, {364.167572, 160.819855}}},
{{{360.416077, 166.795715}, {370.126831, 147.872162}, {388.635406, 147.872162}}},
{{{406.236359, 121.254936}, {409.445679, 121.254936}, {412.975952, 121.789818}}},
{{{406.235992, 121.254936}, {425.705902, 121.254936}, {439.71994, 137.087616}}},
{{{369.8543701171875, 145.66734313964844}, {382.36788940429688, 121.28203582763672},
{406.21844482421875, 121.28203582763672}}},
{{{369.96469116210938, 137.96672058105469}, {383.97555541992188, 121.28203582763672},
{406.2218017578125, 121.28203582763672}}},
{{{369.962311, 137.976044}, {383.971893, 121.29287}, {406.216125, 121.29287}}},
{{{400.121704, 149.468719}, {391.949493, 161.037186}, {391.949493, 181.202423}}},
{{{391.946747, 181.839218}, {391.946747, 155.62442}, {406.115479, 138.855438}}},
{{{360.048828125, 229.2578125}, {360.048828125, 224.4140625}, {362.607421875, 221.3671875}}},
{{{362.607421875, 221.3671875}, {365.166015625, 218.3203125}, {369.228515625, 218.3203125}}},
{{{8, 8}, {10, 10}, {8, -10}}},
{{{8, 8}, {12, 12}, {14, 4}}},
{{{8, 8}, {9, 9}, {10, 8}}}
};
path ops work in progress standardize tests use SK_ARRAY_COUNT everywhere debug why x87 differs from SIMD 64 various platform specific fixes git-svn-id: http://skia.googlecode.com/svn/trunk@8689 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-15 19:13:59 +00:00
const size_t testSetCount = SK_ARRAY_COUNT(testSet);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
static void oneOffTest1(skiatest::Reporter* reporter, size_t outer, size_t inner) {
const SkDQuad& quad1 = testSet[outer];
harden and speed up path op unit tests PathOps tests internal routines direcctly. Check to make sure that test points, lines, quads, curves, triangles, and bounds read from arrays are valid (i.e., don't contain NaN) before calling the test function. Repurpose the test flags. - make 'v' verbose test region output against path output - make 'z' single threaded (before it made it multithreaded) The latter change speeds up tests run by the buildbot by 2x to 3x. BUG= Review URL: https://codereview.chromium.org/19374003 git-svn-id: http://skia.googlecode.com/svn/trunk@10107 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-16 16:11:16 +00:00
SkASSERT(ValidQuad(quad1));
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
const SkDQuad& quad2 = testSet[inner];
harden and speed up path op unit tests PathOps tests internal routines direcctly. Check to make sure that test points, lines, quads, curves, triangles, and bounds read from arrays are valid (i.e., don't contain NaN) before calling the test function. Repurpose the test flags. - make 'v' verbose test region output against path output - make 'z' single threaded (before it made it multithreaded) The latter change speeds up tests run by the buildbot by 2x to 3x. BUG= Review URL: https://codereview.chromium.org/19374003 git-svn-id: http://skia.googlecode.com/svn/trunk@10107 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-16 16:11:16 +00:00
SkASSERT(ValidQuad(quad2));
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
SkIntersections intersections2;
intersections2.intersect(quad1, quad2);
for (int pt = 0; pt < intersections2.used(); ++pt) {
double tt1 = intersections2[0][pt];
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
SkDPoint xy1 = quad1.ptAtT(tt1);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
double tt2 = intersections2[1][pt];
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
SkDPoint xy2 = quad2.ptAtT(tt2);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
if (!xy1.approximatelyEqual(xy2)) {
SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
__FUNCTION__, static_cast<int>(outer), static_cast<int>(inner),
tt1, xy1.fX, xy1.fY, tt2, xy2.fX, xy2.fY);
REPORTER_ASSERT(reporter, 0);
}
#if ONE_OFF_DEBUG
SkDebugf("%s [%d][%d] t1=%1.9g (%1.9g, %1.9g) t2=%1.9g\n", __FUNCTION__,
outer, inner, tt1, xy1.fX, xy1.fY, tt2);
#endif
}
}
path ops near exact Modify line intersections to first - match exact ends - compute intersections - match near ends where the exact ends are preferred, then near matches, then computed matches. This pulls matches towards existing end points when possible, and keeps intersection distances consistent with different line/line line/quad and line/cubic computations. BUG= Review URL: https://codereview.chromium.org/19183003 git-svn-id: http://skia.googlecode.com/svn/trunk@10073 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-15 13:29:13 +00:00
static void PathOpsQuadIntersectionOneOffTest(skiatest::Reporter* reporter) {
path ops -- rewrite angle sort This is a major change resulting from a minor tweak. In the old code, the intersection point of two curves was shared between them, but the intersection points and end points of sorted edges was computed directly from the intersection T value. In this CL, both intersection points and sorted points are the same, and intermediate control points are computed to preserve their slope. The sort itself has been completely rewritten to be more robust and remove 'magic' checks, conditions that empirically worked but couldn't be rationalized. This CL was triggered by errors generated computing the clips of SKP files. At this point, all 73M standard tests work and at least the first troublesome SKPs work. Review URL: https://codereview.chromium.org/15338003 git-svn-id: http://skia.googlecode.com/svn/trunk@9432 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-06-04 17:59:42 +00:00
oneOffTest1(reporter, 0, 1);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
}
static void oneOffTests(skiatest::Reporter* reporter) {
for (size_t outer = 0; outer < testSetCount - 1; ++outer) {
for (size_t inner = outer + 1; inner < testSetCount; ++inner) {
oneOffTest1(reporter, outer, inner);
}
}
}
static const SkDQuad coincidentTestSet[] = {
path ops work in progress make more skps work remove edit files BUG= Review URL: https://codereview.chromium.org/23542056 git-svn-id: http://skia.googlecode.com/svn/trunk@11570 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-10-02 14:49:34 +00:00
#if 0
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
{{{97.9337615966796875,100}, {88,112.94264984130859375}, {88,130}}},
{{{88,130}, {88,124.80951690673828125}, {88.91983795166015625,120}}},
path ops work in progress make more skps work remove edit files BUG= Review URL: https://codereview.chromium.org/23542056 git-svn-id: http://skia.googlecode.com/svn/trunk@11570 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-10-02 14:49:34 +00:00
#endif
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
{{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}}},
{{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}}},
{{{8, 8}, {10, 10}, {8, -10}}},
{{{8, -10}, {10, 10}, {8, 8}}},
};
path ops work in progress standardize tests use SK_ARRAY_COUNT everywhere debug why x87 differs from SIMD 64 various platform specific fixes git-svn-id: http://skia.googlecode.com/svn/trunk@8689 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-15 19:13:59 +00:00
const size_t coincidentTestSetCount = SK_ARRAY_COUNT(coincidentTestSet);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
static void coincidentTestOne(skiatest::Reporter* reporter, int test1, int test2) {
const SkDQuad& quad1 = coincidentTestSet[test1];
SkASSERT(ValidQuad(quad1));
const SkDQuad& quad2 = coincidentTestSet[test2];
SkASSERT(ValidQuad(quad2));
SkIntersections intersections2;
intersections2.intersect(quad1, quad2);
REPORTER_ASSERT(reporter, intersections2.coincidentUsed() == 2);
REPORTER_ASSERT(reporter, intersections2.used() == 2);
for (int pt = 0; pt < intersections2.coincidentUsed(); ++pt) {
double tt1 = intersections2[0][pt];
double tt2 = intersections2[1][pt];
SkDPoint pt1 = quad1.ptAtT(tt1);
SkDPoint pt2 = quad2.ptAtT(tt2);
REPORTER_ASSERT(reporter, pt1.approximatelyEqual(pt2));
}
}
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
static void coincidentTest(skiatest::Reporter* reporter) {
for (size_t testIndex = 0; testIndex < coincidentTestSetCount - 1; testIndex += 2) {
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
coincidentTestOne(reporter, testIndex, testIndex + 1);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
}
}
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
static void PathOpsQuadIntersectionCoincidenceOneOffTest(skiatest::Reporter* reporter) {
coincidentTestOne(reporter, 0, 1);
}
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
static int floatSign(double x) {
return x < 0 ? -1 : x > 0 ? 1 : 0;
}
static const SkDQuad pointFinderTestSet[] = {
//>=0.633974464 0.633974846 <=
{{{1.2071879545809394, 0.82163474041730045}, {1.1534203513372994, 0.52790870069930229},
{1.0880000000000001, 0.29599999999999982}}}, //t=0.63155333662549329, 0.80000000000000004
{{{1.2071879545809394, 0.82163474041730045}, {1.2065040319428038, 0.81766753259119995},
{1.2058123269101506, 0.81370135061854221}}}, //t=0.63155333662549329, 0.6339049773632347
{{{1.2058123269101506, 0.81370135061854221}, {1.152376363978022, 0.5244097415381026},
{1.0880000000000001, 0.29599999999999982}}}, //t=0.6339049773632347, 0.80000000000000004
//>=0.633974083 0.633975227 <=
{{{0.33333333333333326, 0.81481481481481488}, {0.63395173631977997, 0.68744136726313931},
{1.205684411948591, 0.81344322326274499}}}, //t=0.33333333333333331, 0.63395173631977986
{{{0.33333333333333326, 0.81481481481481488}, {0.63396444791444551, 0.68743368362444768},
{1.205732763658403, 0.81345617746834109}}}, //t=0.33333333333333331, 0.63396444791444551
{{{1.205684411948591, 0.81344322326274499}, {1.2057085875611198, 0.81344969999329253},
{1.205732763658403, 0.81345617746834109}}}, //t=0.63395173631977986, 0.63396444791444551
{{{1.205732763658403, 0.81345617746834109}, {1.267928895828891, 0.83008534558465619},
{1.3333333333333333, 0.85185185185185175}}}, //t=0.63396444791444551, 0.66666666666666663
};
static void pointFinder(const SkDQuad& q1, const SkDQuad& q2) {
for (int index = 0; index < 3; ++index) {
double t = q1.nearestT(q2[index]);
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
SkDPoint onQuad = q1.ptAtT(t);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
SkDebugf("%s t=%1.9g (%1.9g,%1.9g) dist=%1.9g\n", __FUNCTION__, t, onQuad.fX, onQuad.fY,
onQuad.distance(q2[index]));
double left[3];
left[0] = ((const SkDLine&) q1[0]).isLeft(q2[index]);
left[1] = ((const SkDLine&) q1[1]).isLeft(q2[index]);
SkDLine diag = {{q1[0], q1[2]}};
left[2] = diag.isLeft(q2[index]);
SkDebugf("%s left=(%d, %d, %d) inHull=%s\n", __FUNCTION__, floatSign(left[0]),
floatSign(left[1]), floatSign(left[2]),
q1.pointInHull(q2[index]) ? "true" : "false");
}
SkDebugf("\n");
}
static void hullIntersect(const SkDQuad& q1, const SkDQuad& q2) {
SkDebugf("%s", __FUNCTION__);
SkIntersections ts;
for (int i1 = 0; i1 < 3; ++i1) {
SkDLine l1 = {{q1[i1], q1[(i1 + 1) % 3]}};
for (int i2 = 0; i2 < 3; ++i2) {
SkDLine l2 = {{q2[i2], q2[(i2 + 1) % 3]}};
if (ts.intersect(l1, l2)) {
SkDebugf(" [%d,%d]", i1, i2);
}
}
}
SkDebugf("\n");
}
static void QuadraticIntersection_PointFinder() {
pointFinder(pointFinderTestSet[0], pointFinderTestSet[4]);
pointFinder(pointFinderTestSet[4], pointFinderTestSet[0]);
pointFinder(pointFinderTestSet[0], pointFinderTestSet[6]);
pointFinder(pointFinderTestSet[6], pointFinderTestSet[0]);
hullIntersect(pointFinderTestSet[0], pointFinderTestSet[4]);
hullIntersect(pointFinderTestSet[0], pointFinderTestSet[6]);
}
static void intersectionFinder(int test1, int test2) {
const SkDQuad& quad1 = testSet[test1];
const SkDQuad& quad2 = testSet[test2];
double t1Seed = 0.5;
double t2Seed = 0.8;
double t1Step = 0.1;
double t2Step = 0.1;
SkDPoint t1[3], t2[3];
bool toggle = true;
do {
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
t1[0] = quad1.ptAtT(t1Seed - t1Step);
t1[1] = quad1.ptAtT(t1Seed);
t1[2] = quad1.ptAtT(t1Seed + t1Step);
t2[0] = quad2.ptAtT(t2Seed - t2Step);
t2[1] = quad2.ptAtT(t2Seed);
t2[2] = quad2.ptAtT(t2Seed + t2Step);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
double dist[3][3];
dist[1][1] = t1[1].distance(t2[1]);
int best_i = 1, best_j = 1;
for (int i = 0; i < 3; ++i) {
for (int j = 0; j < 3; ++j) {
if (i == 1 && j == 1) {
continue;
}
dist[i][j] = t1[i].distance(t2[j]);
if (dist[best_i][best_j] > dist[i][j]) {
best_i = i;
best_j = j;
}
}
}
if (best_i == 0) {
t1Seed -= t1Step;
} else if (best_i == 2) {
t1Seed += t1Step;
}
if (best_j == 0) {
t2Seed -= t2Step;
} else if (best_j == 2) {
t2Seed += t2Step;
}
if (best_i == 1 && best_j == 1) {
if ((toggle ^= true)) {
t1Step /= 2;
} else {
t2Step /= 2;
}
}
} while (!t1[1].approximatelyEqual(t2[1]));
t1Step = t2Step = 0.1;
double t10 = t1Seed - t1Step * 2;
double t12 = t1Seed + t1Step * 2;
double t20 = t2Seed - t2Step * 2;
double t22 = t2Seed + t2Step * 2;
SkDPoint test;
while (!approximately_zero(t1Step)) {
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
test = quad1.ptAtT(t10);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
t10 += t1[1].approximatelyEqual(test) ? -t1Step : t1Step;
t1Step /= 2;
}
t1Step = 0.1;
while (!approximately_zero(t1Step)) {
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
test = quad1.ptAtT(t12);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
t12 -= t1[1].approximatelyEqual(test) ? -t1Step : t1Step;
t1Step /= 2;
}
while (!approximately_zero(t2Step)) {
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
test = quad2.ptAtT(t20);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
t20 += t2[1].approximatelyEqual(test) ? -t2Step : t2Step;
t2Step /= 2;
}
t2Step = 0.1;
while (!approximately_zero(t2Step)) {
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
test = quad2.ptAtT(t22);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
t22 -= t2[1].approximatelyEqual(test) ? -t2Step : t2Step;
t2Step /= 2;
}
#if ONE_OFF_DEBUG
SkDebugf("%s t1=(%1.9g<%1.9g<%1.9g) t2=(%1.9g<%1.9g<%1.9g)\n", __FUNCTION__,
t10, t1Seed, t12, t20, t2Seed, t22);
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
SkDPoint p10 = quad1.ptAtT(t10);
SkDPoint p1Seed = quad1.ptAtT(t1Seed);
SkDPoint p12 = quad1.ptAtT(t12);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
SkDebugf("%s p1=(%1.9g,%1.9g)<(%1.9g,%1.9g)<(%1.9g,%1.9g)\n", __FUNCTION__,
p10.fX, p10.fY, p1Seed.fX, p1Seed.fY, p12.fX, p12.fY);
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
SkDPoint p20 = quad2.ptAtT(t20);
SkDPoint p2Seed = quad2.ptAtT(t2Seed);
SkDPoint p22 = quad2.ptAtT(t22);
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
SkDebugf("%s p2=(%1.9g,%1.9g)<(%1.9g,%1.9g)<(%1.9g,%1.9g)\n", __FUNCTION__,
p20.fX, p20.fY, p2Seed.fX, p2Seed.fY, p22.fX, p22.fY);
#endif
}
static void QuadraticIntersection_IntersectionFinder() {
intersectionFinder(0, 1);
}
path ops work in progress standardize tests use SK_ARRAY_COUNT everywhere debug why x87 differs from SIMD 64 various platform specific fixes git-svn-id: http://skia.googlecode.com/svn/trunk@8689 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-15 19:13:59 +00:00
static void PathOpsQuadIntersectionTest(skiatest::Reporter* reporter) {
Add intersections for path ops This CL depends on https://codereview.chromium.org/12827020/ "Add base types for path ops" The intersection of a line, quadratic, or cubic with another curve (or with itself) is found by solving the implicit equation for the curve pair. The curves are first reduced to find the simplest form that will describe the original, and to detect degenerate or special-case data like horizontal and vertical lines. For cubic self-intersection, and for a pair of cubics, the intersection is found by recursively approximating the cubic with a series of quadratics. The implicit solutions depend on the root finding contained in the DCubic and DQuad structs, and the quartic root finder included here. Review URL: https://codereview.chromium.org/12880016 git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00
oneOffTests(reporter);
coincidentTest(reporter);
standardTestCases(reporter);
if (false) QuadraticIntersection_IntersectionFinder();
if (false) QuadraticIntersection_PointFinder();
}
#include "TestClassDef.h"
path ops work in progress standardize tests use SK_ARRAY_COUNT everywhere debug why x87 differs from SIMD 64 various platform specific fixes git-svn-id: http://skia.googlecode.com/svn/trunk@8689 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-15 19:13:59 +00:00
DEFINE_TESTCLASS_SHORT(PathOpsQuadIntersectionTest)
path ops near exact Modify line intersections to first - match exact ends - compute intersections - match near ends where the exact ends are preferred, then near matches, then computed matches. This pulls matches towards existing end points when possible, and keeps intersection distances consistent with different line/line line/quad and line/cubic computations. BUG= Review URL: https://codereview.chromium.org/19183003 git-svn-id: http://skia.googlecode.com/svn/trunk@10073 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-15 13:29:13 +00:00
DEFINE_TESTCLASS_SHORT(PathOpsQuadIntersectionOneOffTest)
turn off debugging printfs fix pathops issues 1417, 1418 be more rigorous about pulling intersections of lines to end points rewrite cubic/line and quad/line intersections to share style BUG= Review URL: https://codereview.chromium.org/19543005 git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
DEFINE_TESTCLASS_SHORT(PathOpsQuadIntersectionCoincidenceOneOffTest)
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