65f553182a
The fixes include - detect when finding the active top loops between two possible answers - preflight chasing winding to ensure answer is consistent - binary search more often when quadratic intersection fails - add more failure paths when an intersect is missed While this fixes the chrome bug, reenabling path ops in svg should be deferred until additional fixes are landed. TBR= BUG=421132 Committed: https://skia.googlesource.com/skia/+/6f726addf3178b01949bb389ef83cf14a1d7b6b2 Review URL: https://codereview.chromium.org/633393002
2260 lines
89 KiB
HTML
2260 lines
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{{{1.9474306106567383, 2.3777823448181152}, {1.9234547048814592, 2.2418855043499213}, {1.8885438442230225, 2.1114561557769775}}}
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{{{1.9474306106567383, 2.3777823448181152}, {2.0764266380046235, 2.2048800651418379}, {1.8888888359069824, 2.1111111640930176}}}
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</div>
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<div id="simplifyQuadratic58">
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{{326.236786,205.854996}, {329.104431,231.663818}, {351.512085,231.663818}}
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{{303.12088,141.299606}, {330.463562,217.659027}}
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<div id="simplifyQuadratic58a">
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{{{326.23678588867188, 205.85499572753906}, {328.04376176056422, 222.11778818951981}, {337.6092529296875, 228.13298034667969}
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{{{303.12088012695312, 141.29960632324219}, {330.46356201171875, 217.65902709960937}
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</div>
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<div id="quadratic58again">
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{{322.935669,231.030273}, {312.832214,220.393295}, {312.832214,203.454178}}
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{{322.12738,233.397751}, {295.718353,159.505829}}
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</div>
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<div id="simplifyQuadratic56">
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{{{380.29449462890625, 140.44486999511719}, {387.29080200195312, 136.67460632324219}, {396.0399169921875, 136.67460632324219}}}
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{{{380.29449462890625, 140.44486999511719}, {388.29925537109375, 136.67460632324219}, {398.16494750976562, 136.67460632324219}}}
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{{{380.29449462890625, 140.44486999511719}, {387.692810, 137.858429}}}
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</div>
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<div id="simplifyQuadratic56a">
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{{{380.29449462890625, 140.44486999511719}, {387.29079954793264, 136.67460632324219}, {396.0399169921875, 136.67460632324219}}}
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{{{380.29449462890625, 140.44486999511719}, {388.29925767018653, 136.67460632324219}, {398.16494750976562, 136.67460632324219}}}
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{{fX=380.29449462890625 fY=140.44486999511719 }, {fX=398.16494750976562 fY=136.67460632324219 }} }
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{{fX=380.29449462890625 fY=140.44486999511719 }, {fX=396.03991699218750 fY=136.67460632324219 }}
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</div>
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<div id="simplifyQuadratic27">
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{{{1, 1}, {1, 0.666666687f}, {0.888888896f, 0.444444448f}}}
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{{{1, 1}, {1, 0.5f}, {0, 0}}}
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{{fX=1.0000000000000000 fY=1.0000000000000000 }, {fX=0.00000000000000000 fY=0.00000000000000000 }} }
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{{fX=1.0000000000000000 fY=1.0000000000000000 }, {fX=0.88888889551162720 fY=0.44444444775581360 }} }
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</div>
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<div id="cubicOp7d">
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{{{0.7114982008934021, 1.6617077589035034}, {0.51239079236984253, 1.4952657222747803}, {0.27760171890258789, 1.2776017189025879}, {0, 1}}}
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{{{0.7114982008934021, 1.6617077589035034}, {0.20600014925003052, 1.7854888439178467}, {9.8686491813063348e-017, 1.9077447652816772}, {0, 1}}}
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</div>
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<div id="cubicOp25i">
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{{{3.3856770992279053, 1.6298094987869263}, {3.777235186270762, 1.2744716237277114}, {3.7191683314895783, 1.4127666421509713}, {3.3995792865753174, 1.6371387243270874}}}
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{{{3.3856770992279053, 1.6298094987869263}, {3.3902986605112582, 1.6322361865810757}, {3.3949326825525121, 1.6346792563210237}, {3.3995792865753174, 1.6371387243270874}}}
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{{3.3856770992279053, 1.6298094987869263 }, {3.3995792865753174, 1.6371387243270874 }}
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</div>
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<div id="eldorado1">
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{{{1006.69513f, 291}, {1023.26367f, 291}, {1033.84021f, 304.431458f}, {1030.31836f, 321}}}
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{{{1030.318359375, 321}, {1036.695068359375, 291}}}
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{{fX=1030.3183593750000 fY=321.00000000000000 }, {fX=1006.6951293945312 fY=291.00000000000000 }} }
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</div>
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<div id="carpetplanet1">
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{{fX=67.000000000000000, 913.00000000000000 }, {194.00000000000000, 1041.0000000000000 }} }
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{{fX=67.000000000000000, 913.00000000000000 }, {67.662002563476562, 926.00000000000000 }} }
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{{{67, 913}, {67, 917.388977f}, {67.223999f, 921.726013f}, {67.6620026f, 926}}}
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|
{{{67, 913}, {67, 983.692017f}, {123.860001f, 1041}, {194, 1041}}}
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{{{67, 913}, {67.17070902440698, 919.69443917507760}}}
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</div>
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<div id="cubicOp104">
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{{{2.25, 2.5}, {4.5, 1}}}
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{{{2.25, 2.5}, {3.0833333333333321, 1.9999999999999973}, {4.0277778307596899, 1.2777777777777759}, {4.8611111640930176, 1}}}
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|
{{{2.25, 2.5}, {1.9476099234472042, 2.6814340459316774}, {1.6598502000264239, 2.8336073904096661}, {1.3973386287689209, 2.9246666431427002}}}
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{{{2.25, 2.5}, {1.2674896717071533, 3.1550068855285645}}}
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</div>
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<div id="cubicOp105">
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{{{2.4060275554656982, 3.4971563816070557}, {2.9702522134213849, 4.2195279679982622}, {3.8172613958721247, 5.0538091166976979}, {5, 6}}}
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{{{2.4060275554656982, 3.4971563816070557}, {3.4194286958002023, 3.5574883660881684}, {4.0077197935900575, 2.6628073781813661}, {2.2602717876434326, 0.33545622229576111}}}
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</div>
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<div id="cubicOp106">
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{{{0.80825299024581909, 1.9691258668899536}, {0.8601454496383667, 1.9885541200637817}, {0.92434978485107422, 2}, {1, 2}}}
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|
{{{0.80825299024581909, 1.9691258668899536}, {2.2400102615356445, 3.5966837406158447}, {2.5486805438995361, 3.362929105758667}, {2.494147777557373, 2.5976591110229492}}}
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{{{0.80825299024581909, 1.9691258668899536}, {2.494147777557373, 2.5976591110229492}}}
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{{{0.80825299024581909, 1.9691258668899536}, {1, 2}}}
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</div>
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<div id="cubicOp109">
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{{{5, 4}, {5.443139240552143931, 3.556860759447856069}, {5.297161243696338673, 3.702838775882067335}, {4.649086475372314453, 3.654751062393188477}}}
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{{{5, 4}, {4.876459521889748849, 3.876459521889748849}, {4.759596556247283949, 3.761504502886134915}, {4.649086475372314453, 3.654751062393188477}}}
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</div>
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<div id="skpwww_joomla_org_23">
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{{{421, 378}, {421, 380.209137f}, {418.761414f, 382}, {416, 382}}}
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{{{320, 378}, {421, 378.000031f}}}
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{{{421, 378.000031f}, {421, 383}}}
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{{{416, 383}, {418.761414f, 383}, {421, 380.761414f}, {421, 378}}}
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|
</div>
|
|
|
|
<div id="xop1i">
|
|
{{5.000,1.000}, {5.191,0.809}, {5.163,0.837}, {4.993,1.000}}
|
|
{{5.000,1.000}, {4.968,1.024}}
|
|
{{5.000,1.000}, {4.998,1.000}, {4.995,1.000}, {4.993,1.000}}
|
|
</div>
|
|
|
|
<div id="xop1u">
|
|
{{3.500,3.500}, {3.000,4.000}, {2.500,4.500}, {1.000,4.000}}
|
|
{{3.500,3.500}, {3.113,3.887}, {2.725,4.275}, {2.338,3.732}}
|
|
</div>
|
|
|
|
<div id="xOp2i">
|
|
{{{2, 3}, {1.3475509011665685, 4.9573472965002949}, {2.8235509286078759, 3.5091759365574173}, {3.6505906581878662, 1.9883773326873779}}}
|
|
{{{2, 3}, {2.4604574005585795, 2.654656949581065}, {3.0269255632437986, 2.3093137214344743}, {3.6505906581878662, 1.9883773326873779}}}
|
|
{{{2, 3}, {1.0000000000000013, 3.7500000000000004}, {0.500000000000001, 4.5}, {1, 5}}}
|
|
</div>
|
|
|
|
<div id="testQuadratic56">
|
|
{{{380.29449462890625, 140.44486999511719}, {379.59701460635523, 140.8207374882179}, {378.91729736328125, 141.23385620117187}}}
|
|
{{{380.29449462890625, 140.44486999511719}, {387.29079954793264, 136.67460632324219}, {396.0399169921875, 136.67460632324219}}}
|
|
{{{380.29449462890625, 140.44486999511719}, {388.29925767018653, 136.67460632324219}, {398.16494750976562, 136.67460632324219}}}
|
|
</div>
|
|
|
|
<div id="testQuad15">
|
|
{{{1, 3}, {1, 1}}}
|
|
{{{1, 3}, {0, 0}}}
|
|
{{{1, 3}, {2, 0}, {0, 0}}}
|
|
</div>
|
|
|
|
<div id="testQuad21">
|
|
{{{0, 0}, {1, 1}}}
|
|
{{{0, 0}, {3, 0}, {2, 3}}}
|
|
{{{0, 0}, {2, 3}}}
|
|
{{{0, 0}, {2, 1}}}
|
|
</div>
|
|
|
|
<div id="testQuad22">
|
|
{{{0, 0}, {1.2000000476837158, 0.80000001192092896}}}
|
|
{{{0, 0}, {2, 0}}}
|
|
{{{0, 0}, {0, 1}, {3, 2}}}
|
|
{{{0, 0}, {1, 1}}}
|
|
</div>
|
|
|
|
<div id="testQuad23">
|
|
{{{1, 3}, {1.9090908914804459, 1.1818182170391081}, {0.33884298801422119, 1.0165289640426636}}}
|
|
{{{1, 3}, {0.33884298801422119, 1.0165289640426636}}}
|
|
{{{1, 3}, {3, 0}}}
|
|
</div>
|
|
|
|
<div id="cubicOp35d">
|
|
{{{2.211416482925415, 1.6971458196640015}, {1.2938009262874868, 2.8273619288830005}, {0.64690048634813535, 3.5876019453925414}, {0, 1}}}
|
|
{{{2.211416482925415, 1.6971458196640015}, {1.0082962512969971, 1.997925877571106}}}
|
|
{{{2.211416482925415, 1.6971458196640015}, {5, 1}}}
|
|
</div>
|
|
|
|
<div id="skpnational_com_au81">
|
|
{{{1110.7071533203125, 817.29290771484375}, {1110.9998779296875, 817.58587646484375}, {1111, 818}}}
|
|
{{{1110.7071533203125, 817.29290771484375}, {1110.526180767307778, 817.1119214508684081}, {1110.276144384999725, 817}, {1110, 817}}}
|
|
{{{1110.7071533203125, 817.29290771484375}, {1110.888097894721341, 817.4738660071997174}, {1111, 817.7238677851287321}, {1111, 818}}}
|
|
{{{1110.7071533203125, 817.29290771484375}, {1110.4140625, 817.0001220703125}, {1110, 817}}}
|
|
</div>
|
|
|
|
<div id="cubicOp85d">
|
|
{{{1.0648664236068726, 2.9606373310089111}, {0.80208036362614099, 2.7936484180272374}, {0.49170560730211144, 2.2292640182552783}, {0, 1}}}
|
|
{{{1.0648664236068726, 2.9606373310089111}, {0.6261905430171294, 3.2248910899179175}, {0.38860045191888659, 2.9430022595944321}, {0, 1}}}
|
|
{{{1.0648664236068726, 2.9606373310089111}, {1.4282355765013004, 3.191542348791669}, {1.7006143409852195, 2.6626209548338378}, {2.2355968952178955, 2.0810616016387939}}}
|
|
{{{1.0648664236068726, 2.9606373310089111}, {1.3437142856601656, 2.7926622975690494}, {1.7038131304059798, 2.4040122748806132}, {2.2355968952178955, 2.0810616016387939}}}
|
|
</div>
|
|
|
|
<div id="testQuads22">
|
|
{{{0, 0}, {1.20000004768371582, 0.8000000119209289551}}}
|
|
{{{0, 0}, {2, 0}}}
|
|
{{{0, 0}, {0, 1}, {3, 2}}}
|
|
{{{0, 0}, {1, 1}}}
|
|
</div>
|
|
|
|
<div id="cubicOp59d">
|
|
{{{4, 1}, {4, 0.37698365082686142}, {4.3881493046286568, 2.4710128800004547}, {3.4716842174530029, 2.9292664527893066}}}
|
|
{{{4, 1}, {0, 1}}}
|
|
</div>
|
|
|
|
<div id="findFirst1">
|
|
{{{2.5767931938171387, 0.88524383306503296}, {2.4235948002142855, 0.88692501490384834}, {2.2328897699358898, 0.92237007668803672}, {2, 1}}}
|
|
{{{2.5767931938171387, 0.88524383306503296}, {1.6008643534817426, 1.1609015907463158}, {1.1200849961943122, 1.8138386966264941}, {0.75343161821365356, 2.7170474529266357}}}
|
|
{{{2.5767931938171387, 0.88524383306503296}, {4.0492746201577932, 0.86908498848619054}, {2.0567957107800288, 3.9721309710522448}, {0.75343161821365356, 2.7170474529266357}}}
|
|
{{{2.5767931938171387, 0.88524383306503296}, {3.3470152174198557, 0.66768936887879282}, {4.4256496583071421, 0.68512993166142844}, {6, 1}}}
|
|
{{{2.57679319, 0.885243833}, {5.15358639, 0.885243833}}}
|
|
</div>
|
|
|
|
<div id="testQuads54">
|
|
{{1.000,1.000}, {1.500,0.500}, {1.500,0.250}}
|
|
{{1.000,1.000}, {1.667,0.333}}
|
|
{{1.000,1.000}, {2.000,3.000}}
|
|
</div>
|
|
|
|
<div id="testQuads45">
|
|
{{{3, 3}, {3, 2.7999999523162842}, {2.880000114440918, 2.6400001049041748}}}
|
|
{{{3, 3}, {3, 2}, {2, 0}}}
|
|
{{{3, 3}, {2, 0}}}
|
|
{{{3, 3}, {2.880000114440918, 2.6400001049041748}}}
|
|
</div>
|
|
|
|
<div id="testQuads59">
|
|
{{{3, 1}, {3, 0}}}
|
|
{{{3, 1}, {2.6666667461395264, 0.66666668653488159}}}
|
|
{{{3, 1}, {2.8000003099441542, 1.1999996900558463}, {2.6800000667572021, 1.3600000143051147}}}
|
|
{{{3, 1}, {2.6666667461395264, 1.3333333730697632}}}
|
|
</div>
|
|
|
|
<div id="skpcarrot_is24">
|
|
{{{1020.08099, 672.161987}, {1020.08051, 651.450988}, {1011.68576, 632.700988}, {998.113511, 619.128738}}}
|
|
{{{1020.08099, 672.161987}, {1019.27607, 640.291301}, {998.113511, 619.128738}}}
|
|
{{{1020, 672}, {1020, 651.289307}, {1012.67767, 633.611633}, {998.03302, 618.96698}}}
|
|
{{{1020, 672}, {1020, 640.93396}, {998.03302, 618.96698}}}
|
|
</div>
|
|
|
|
<div id="skpcarrot_is24a">
|
|
{{{1020, 672}, {1020, 651.289307}, {1012.67767, 633.611633}, {998.03302, 618.96698}}}
|
|
{{{1020, 672}, {1020, 640.93396}, {998.03302, 618.96698}}}
|
|
</div>
|
|
|
|
<div id="skpcarrot_is24b">
|
|
{{{1020.08099, 672.161987}, {1020.08051, 651.450988}, {1011.68576, 632.700988}, {998.113511, 619.128738}}}
|
|
{{{1020.08099, 672.161987}, {1019.27607, 640.291301}, {998.113511, 619.128738}}}
|
|
</div>
|
|
|
|
<div id="skpcarrot_is24c">
|
|
{{{{1020.08099,672.161987}, {1020.08002,630.73999}, {986.502014,597.161987}, {945.080994,597.161987}}},
|
|
{{{1020,672}, {1020,640.93396}, {998.03302,618.96698}}},
|
|
</div>
|
|
|
|
<div id="skpcarrot_is24d">
|
|
{{{1020.08099, 672.161987}, {1019.27607, 640.291301}, {998.113511, 619.128738}}}
|
|
{{{1020, 672}, {1020, 640.93396}, {998.03302, 618.96698}}}
|
|
</div>
|
|
|
|
<div id="skpcarrot_is24e">
|
|
{{{{1020.08099,672.161987}, {1020.08002,630.73999}, {986.502014,597.161987}, {945.080994,597.161987}}},
|
|
{{{1020.08099, 672.161987}, {1019.27607, 640.291301}, {998.113511, 619.128738}}}
|
|
{{{1020, 672}, {1020, 640.93396}, {998.03302, 618.96698}}}
|
|
</div>
|
|
|
|
<div id="slop1">
|
|
{{{-378.22698974609375, -987.8935546875}, {-47.53326416015625, 482.7139892578125}, {-626.4708251953125, -338.62969970703125}, {-847.94854736328125, -861.42230224609375}}}
|
|
{{{-378.61790442466736, -987.49146723747253}, {-282.51787429804051, -556.39065286764685}, {-278.55106873374694, -364.17984985308294}}}
|
|
{{{-305.5273847156202, -615.99979442705023}, {-305.04071954345704, -612.87932617187505}}}
|
|
</div>
|
|
|
|
qT=0.98917687 cT=0.788725084 dist=312.188493 cross=-40759.4852
|
|
<div id="slop2">
|
|
{{{79.5137939,-249.867188}, {260.778931,-561.349854}, {343.375977,-472.657898}, {610.251465,97.8208008}}}
|
|
{{{312.993284,-406.178762}, {418.053808,-326.9483}, {610.036929,97.2408578}}}
|
|
{{{463.107827,-200.015424}, {602.008878,79.5702581}}}
|
|
</div>
|
|
|
|
qT=0.0192863061 cT=0.241285225 dist=652.007881 cross=528435.665
|
|
<div id="slop3">
|
|
{{{-895.015015,-523.545288}, {223.166992,-999.644531}, {615.428711,-767.162109}, {605.479736,480.355713}}}
|
|
{{{-894.932414,-523.605499}, {-66.4040558,-889.938889}, {278.515212,-667.684158}}}
|
|
{{{-207.851881,-740.109296}, {-831.819002,-550.955104}}}
|
|
</div>
|
|
|
|
qT=0.0245724525 cT=0.231316637 dist=407.103004 cross=-46286.5686
|
|
<div id="slop4">
|
|
{{{876.492798,-849.716187}, {519.430908,-288.374207}, {187.2771,314.324341}, {335.363403,533.086548}}}
|
|
{{{876.323133,-849.535824}, {594.868958,-415.229224}, {416.667192,-30.0277669}}}
|
|
{{{638.343827,-458.798274}, {849.023879,-807.14691}}}
|
|
</div>
|
|
|
|
qT=0.000316393778 cT=0.248252634 dist=489.678412 cross=-57352.7653
|
|
<div id="slop5">
|
|
{{{876.492798,-849.716187}, {519.430908,-288.374207}, {187.2771,314.324341}, {335.363403,533.086548}}}
|
|
{{{876.147506,-849.184429}, {593.963775,-414.437342}, {416.842819,-30.3791618}}}
|
|
{{{622.139843,-430.512844}, {876.135915,-849.166571}}}
|
|
</div>
|
|
|
|
qT=0.989562776 cT=0.760518485 dist=211.50589 cross=134901.42
|
|
<div id="slop6">
|
|
{{{876.492798,-849.716187}, {519.430908,-288.374207}, {187.2771,314.324341}, {335.363403,533.086548}}}
|
|
{{{416.141554,-30.4534414}, {237.846068,356.664216}, {335.719378,533.692585}}}
|
|
{{{305.345404,315.701195}, {331.440368,525.591152}}}
|
|
</div>
|
|
|
|
qT=0.0978245708 cT=0.397465904 dist=959.737748 cross=158093.403
|
|
<div id="slop7">
|
|
{{{895.800171,-222.213013}, {-528.78833,526.47644}, {-967.299927,776.05603}, {-611.228027,319.934814}}}
|
|
{{{629.666617,-82.159942}, {-661.943328,620.81113}, {-723.44072,537.121833}}}
|
|
{{{-347.560585,421.003177}, {507.062151,-15.707855}}}
|
|
</div>
|
|
|
|
qT=0.169803964 cT=0.389326872 dist=658.039939 cross=107865.424
|
|
<div id="slop8">
|
|
{{{895.800171,-222.213013}, {-528.78833,526.47644}, {-967.299927,776.05603}, {-611.228027,319.934814}}}
|
|
{{{629.536617,-81.7990275}, {-662.457623,620.485316}, {-723.31072,536.760918}}}
|
|
{{{-330.996421,413.091598}, {257.080063,117.824582}}}
|
|
</div>
|
|
|
|
qT=0.0863836955 cT=0.387901231 dist=986.24777 cross=157348.113
|
|
<div id="slop9">
|
|
{{{895.800171,-222.213013}, {-528.78833,526.47644}, {-967.299927,776.05603}, {-611.228027,319.934814}}}
|
|
{{{629.248316,-81.8984216}, {-662.339696,620.351182}, {-723.022419,536.860313}}}
|
|
{{{-328.058099,411.68229}, {549.399512,-38.5985162}}}
|
|
</div>
|
|
|
|
qT=0.175359403 cT=0.390420692 dist=640.051938 cross=105488.084
|
|
<div id="slop10">
|
|
{{{895.800171,-222.213013}, {-528.78833,526.47644}, {-967.299927,776.05603}, {-611.228027,319.934814}}}
|
|
{{{629.760605,-81.9577046}, {-661.301606,620.029216}, {-723.534707,536.919596}}}
|
|
{{{-333.243516,414.168229}, {238.961251,127.37878}}}
|
|
</div>
|
|
|
|
qT=0.0986412358 cT=0.382365595 dist=921.951857 cross=145651.761
|
|
<div id="slop11">
|
|
{{{895.800171,-222.213013}, {-528.78833,526.47644}, {-967.299927,776.05603}, {-611.228027,319.934814}}}
|
|
{{{629.919588,-82.1841825}, {-662.488256,620.04494}, {-723.693691,537.146073}}}
|
|
{{{-316.541641,406.142013}, {504.067361,-14.0913644}}}
|
|
</div>
|
|
|
|
qT=0.146746849 cT=0.391456086 dist=750.006927 cross=123679.094
|
|
<div id="slop12">
|
|
{{{895.800171,-222.213013}, {-528.78833,526.47644}, {-967.299927,776.05603}, {-611.228027,319.934814}}}
|
|
{{{629.712675,-82.0366321}, {-661.487948,620.191832}, {-723.486777,536.998523}}}
|
|
{{{-335.364605,415.183549}, {334.079508,77.0194322}}}
|
|
</div>
|
|
|
|
qT=0.00196158131 cT=0.20357489 dist=466.080185 cross=241741.95
|
|
<div id="slop13">
|
|
{{{-627.671509,-359.277039}, {222.414551,-791.598328}, {390.603027,-581.903687}, {-21.7962036,560.33728}}}
|
|
{{{-627.675958,-359.282959}, {-52.012535,-659.029798}, {116.967835,-524.756101}}}
|
|
{{{-192.427848,-541.033993}, {-622.696937,-361.871356}}}
|
|
</div>
|
|
|
|
qT=0.948725598 cT=0.744200608 dist=699.694313 cross=179509.878
|
|
<div id="slop14">
|
|
{{{-362.331848,427.292603}, {634.418701,-661.946533}, {438.438599,-626.147278}, {-893.060425,214.243408}}}
|
|
{{{259.978301,-393.549091}, {181.692599,-474.452437}, {-892.389834,213.689096}}}
|
|
{{{-95.1310032,-267.365579}, {-696.89984,89.6307768}}}
|
|
</div>
|
|
|
|
qT=0.971677129 cT=0.755306143 dist=771.998962 cross=189468.817
|
|
<div id="slop15">
|
|
{{{-362.331848,427.292603}, {634.418701,-661.946533}, {438.438599,-626.147278}, {-893.060425,214.243408}}}
|
|
{{{259.662278,-393.355886}, {181.612843,-473.935297}, {-892.073812,213.495892}}}
|
|
{{{-120.438346,-253.451518}, {-782.461182,143.673352}}}
|
|
</div>
|
|
|
|
qT=0.571797795 cT=0.773951562 dist=495.560209 cross=221091.889
|
|
<div id="slop16">
|
|
{{{447.192383,-883.210205}, {359.794678,-987.765808}, {755.427612,-754.328735}, {963.672119,746.545776}}}
|
|
{{{635.795655,-580.726915}, {810.704547,-228.491534}, {963.345162,745.921688}}}
|
|
{{{801.470356,-87.7105789}, {646.551495,-558.433498}}}
|
|
</div>
|
|
|
|
qT=0.579236693 cT=0.782683167 dist=281.750564 cross=65125.1655
|
|
<div id="slop17">
|
|
{{{-931.259155,-883.589966}, {-485.682007,-615.793701}, {-68.5913696,-928.695923}, {431.499268,-810.584778}}}
|
|
{{{-177.087049,-804.265618}, {110.452267,-866.525236}, {430.718323,-810.414444}}}
|
|
{{{116.080189,-836.904702}, {-164.080748,-807.017753}}}
|
|
</div>
|
|
|
|
qT=0.0102075348 cT=0.2448024 dist=855.408492 cross=463614.179
|
|
<div id="slop18">
|
|
{{{-867.011292,844.139282}, {-136.156799,-281.244263}, {583.27771,-926.761414}, {998.710205,6.19244385}}}
|
|
{{{-866.7221,843.65105}, {-308.756317,-34.8353977}, {183.843514,-346.222431}}}
|
|
{{{-336.612013,120.039627}, {-844.283739,808.5112}}}
|
|
</div>
|
|
|
|
qT=0.473968306 cT=0.266805943 dist=567.851844 cross=-461509.104
|
|
<div id="slop19">
|
|
{{{-867.011292,844.139282}, {-136.156799,-281.244263}, {583.27771,-926.761414}, {998.710205,6.19244385}}}
|
|
{{{-867.218781,844.133445}, {-310.496711,-35.0458119}, {184.340195,-346.704825}}}
|
|
{{{-290.018097,66.7065093}, {132.536746,-312.639141}}}
|
|
</div>
|
|
|
|
qT=0.0232589401 cT=0.241085469 dist=789.989464 cross=428119.544
|
|
<div id="slop20">
|
|
{{{-867.011292,844.139282}, {-136.156799,-281.244263}, {583.27771,-926.761414}, {998.710205,6.19244385}}}
|
|
{{{-866.942271,843.928587}, {-309.178151,-34.0018497}, {184.063685,-346.499968}}}
|
|
{{{-344.507162,129.265381}, {-815.30119,763.644082}}}
|
|
</div>
|
|
|
|
<div id="skpnamecheap_405">
|
|
{{{141.008835f, 837.9646f}, {141.235291f, 1109.05884f}}}
|
|
{{{141, 842}, {141.14502f, 1000}}}
|
|
{{{141.14502f, 1000}, {140, 1000}}}
|
|
</div>
|
|
|
|
<div id="skpwww_dealnews_com_315">
|
|
{{{969.87066650390625, 4279.810546875}, {967.7166748046875, 4260}}}
|
|
{{{969.87066650390625, 4279.810546875}, {969.866972698829386, 4279.809233889284769}, {969.88751220703125, 4279.81640625}}}
|
|
{{{969.87066650390625, 4279.810546875}, {970, 4281}}}
|
|
{{{969.87066650390625, 4279.810546875}, {968.9217161046863112, 4279.473236623693992}, {968.17156982421875, 4278.53564453125}}}
|
|
{{{969.8706626470486754, 4279.810469740555163}, {969.8790796016525064, 4279.813461598796493}, {969.88751220703125, 4279.81640625}}}
|
|
</div>
|
|
|
|
<div id="skpwww_dealnews_com_315_a">
|
|
{{{969.8706626470486754, 4279.810469740555163}, {969.8790796016525064, 4279.813461598796493}, {969.88751220703125, 4279.81640625}}}
|
|
{{{969.87066650390625, 4279.810546875}, {969.8790834585100811, 4279.81353873324133}}}
|
|
{{{969.88751220703125, 4279.81640625}, {969.8790796016525064, 4279.813461598796493}}}
|
|
</div>
|
|
|
|
<div id="testQuads60">
|
|
{{{2, 2}, {1.977731304590550021, 1.97773134708404541}, {1.95645439624786377, 1.95546269416809082}}}
|
|
{{{2, 2}, {2, 3}}}
|
|
{{{2, 2}, {2, 1.960000038146972656}}}
|
|
{{{2, 2}, {1.955341815948486328, 1.955341815948486328}}}
|
|
</div>
|
|
|
|
<div id="testQuads60_a">
|
|
{{{2, 0}, {1, 1}, {2, 2}}}
|
|
{{{2, 2}, {0, 0}}}
|
|
</div>
|
|
|
|
<div id="testQuads60_b">
|
|
{{2,1}, {0,2}, {3,2}},
|
|
{{3,2}, {2,3}},
|
|
{{2,3}, {2,1}},
|
|
{{0,0}, {2,0}},
|
|
{{2,0}, {1,1}, {2,2}},
|
|
{{2,2}, {0,0}},
|
|
</div>
|
|
|
|
<div id="skpelpais_com_18">
|
|
{{183,8507}, {552,8506.99023}},
|
|
{{552,8506.99023}, {552,8508}},
|
|
{{552,8508}, {183,8508}},
|
|
{{183,8508}, {183,8507}},
|
|
op intersect
|
|
{{183,8508}, {183,8506.99023}},
|
|
{{183,8506.99023}, {552,8507}},
|
|
{{552,8507}, {552,8508}},
|
|
</div>
|
|
|
|
<div id="skpwww_cityads_ru_249">
|
|
{{{1000, 10.4003992f}, {1000, 13.3527431f}}}
|
|
{{{1000, 13.3527431f}, {999.917603f, 13.2607508f}, {999.82843f, 13.1715727f}}}
|
|
{{{1000, 13}, {999.969971f, 37.0299988f}}}
|
|
</div>
|
|
|
|
<div id="skpwww_maturesupertube_com_21">
|
|
{{{{3.87867975f, 11831.8789f}, {4.7573595f, 11831}, {6, 11831}}},
|
|
{{{2, 11830}, {4.5f, 11832.5f}}}},
|
|
</div>
|
|
|
|
<div id="loop1">
|
|
{{1, 4, 2, 6, 0, 5, 4.5f, 4.33333302f
|
|
{{2, 6, 0, 5, 4.5f, 4.33333302f, 1, 4
|
|
{{{3, 5}, {2.33333325f, 4.33333349f}, {3.83333325f, 3.83333349f}, {2, 4}}}
|
|
{{{2, 4}, {3, 5}, {2.33333325f, 4.33333349f}, {3.83333325f, 3.83333349f}}}
|
|
</div>
|
|
|
|
<div id="serp1">
|
|
{{{0.55431359440952721, 2.1086271888190544}, {0.1588954256872922, 2.3078315988141811}, {0.57446808656344528, 2.1489361731268914}, {0, 1}}}
|
|
{{{0.55431359440952721, 2.1086271888190544}, {0.1588954256872922, 2.3078315988141811}, {0.57446808656344528, 2.1489361731268914}, {0, 1}}}
|
|
</div>
|
|
<div id="serp2">
|
|
{{{4.0946656649135988, 3.283996994740797}, {4.1983471074380168, 2.1074380165289259}, {4.5454545454545459, 1.3636363636363635}, {4, 3}}}
|
|
{{{4.0946656649135988, 3.283996994740797}, {4.1983471074380168, 2.1074380165289259}, {4.5454545454545459, 1.3636363636363635}, {4, 3}}}
|
|
</div>
|
|
<div id="serp3">
|
|
{{{2.2015477442471254, 1.1371488033013577}, {2.3167674423028526, 0.68323255769714741}, {2.4076432497431028, 0.59235675025689716}, {2, 1}}}
|
|
{{{2.2015477442471254, 1.1371488033013577}, {2.3167674423028526, 0.68323255769714741}, {2.4076432497431028, 0.59235675025689716}, {2, 1}}}
|
|
</div>
|
|
|
|
<div id="skpwww_seopack_blogspot_com_2153">
|
|
{{{924, 245.472672f}, {1143, 247}}}
|
|
{{{1000, 246}, {927.340759f, 245.505722f}}}
|
|
{{{999.892212f, 246}, {927.340759f, 245.505722f}}}
|
|
</div>
|
|
|
|
<div id="self1">
|
|
{{{2, 3}, {0, 4}, {3, 2}, {5, 3}}}
|
|
{{{2, 3}, {0, 4}, {3, 2}, {5, 3}}}
|
|
</div>
|
|
|
|
<div id="skpwww_pindosiya_com_99">
|
|
{{{901.0869140625, 547}, {899, 556}}}
|
|
{{{900.0235595703125, 551.60284423828125}, {900.06072998046875, 551.29705810546875}, {900.15655517578125, 551.0157470703125}}}
|
|
</div>
|
|
|
|
<div id="cubicLineMiss1">
|
|
{{{-634.60540771484375, -481.262939453125}, {266.2696533203125, -752.70867919921875}, {-751.8370361328125, -317.37921142578125}, {-969.7427978515625, 824.7255859375}}}
|
|
{{{-287.9506133720805678, -557.1376476615772617}, {-285.9506133720805678, -557.1376476615772617}}}
|
|
</div>
|
|
|
|
<div id="cubicLineMiss2">
|
|
{{{-818.4456787109375, 248.218017578125}, {944.18505859375, -252.2330322265625}, {957.3946533203125, -45.43280029296875}, {-591.766357421875, 868.6187744140625}}}
|
|
{{{435.1963493079119871, -16.42683763243891093}, {437.1963493079119871, -16.42683763243891093}}}
|
|
</div>
|
|
|
|
<div id="cubicLineMiss3">
|
|
{{{-818.4456787109375, 248.218017578125}, {944.18505859375, -252.2330322265625}, {957.3946533203125, -45.43280029296875}, {-591.766357421875, 868.6187744140625}}}
|
|
{{{397.5007682490800676, -17.35020084021140008}, {399.5007682490800676, -17.35020084021140008}}}
|
|
</div>
|
|
|
|
<div id="cubicLineMiss4">
|
|
{{{-652.660888671875, -384.6475830078125}, {-551.7723388671875, -925.5025634765625}, {-321.06658935546875, -813.10345458984375}, {142.6982421875, -47.4503173828125}}}
|
|
{{{-478.4372049758064236, -717.868282575075682}, {-476.4372049758064236, -717.868282575075682}}}
|
|
</div>
|
|
|
|
<div id="cubicLineErr1">
|
|
{{{-954.4322509765625, 827.2216796875}, {-420.24017333984375, -7.80560302734375}, {799.134765625, -971.4295654296875}, {-556.23486328125, 344.400146484375}}}
|
|
|
|
{{{58.57411390280688579, -302.8879316712078662}, {60.57411390280688579, -302.8879316712078662}}}
|
|
</div>
|
|
|
|
<div id="cubicLineErr2">
|
|
{{{-634.60540771484375, -481.262939453125}, {266.2696533203125, -752.70867919921875}, {-751.8370361328125, -317.37921142578125}, {-969.7427978515625, 824.7255859375}}}
|
|
{{{-287.95061337208057, -557.13764766157726}, {-285.95061337208057, -557.13764766157726}}}
|
|
{{{-308.65463091760211, -549.4520029924679} -308.65463091760211, -569.4520029924679
|
|
</div>
|
|
|
|
<div id="skpwww_educationalcraft_com_4">
|
|
{{{974.91998291015625, 1481.7769775390625}, {974.91998291015625, 1481.7760009765625}, {977.3189697265625, 1484.6190185546875}, {975.10699462890625, 1486.97802734375}}}
|
|
{{fX=974.91998291015625 fY=1481.7769775390625 }, {fX=974.92071342468262 fY=1481.7972941398621 }} }
|
|
</div>
|
|
|
|
<div id="skpwww_educationalcraft_com_4a">
|
|
{{{962.10699462890625, 1485.654052734375}, {962.10699462890625, 1485.654052734375}, {960.58502197265625, 1483.595947265625}, {957.53900146484375, 1482.0970458984375}}}
|
|
{{{963.21502685546875, 1486.6700439453125}, {962.7449951171875, 1486.6700439453125}, {962.10699462890625, 1485.654052734375}, {962.10699462890625, 1485.654052734375}}}
|
|
</div>
|
|
|
|
<div id="skpwww_educationalcraft_com_4b">
|
|
{{{980.9000244140625, 1474.3280029296875}, {980.9000244140625, 1474.3280029296875}, {978.89300537109375, 1471.95703125}, {981.791015625, 1469.487060546875}}}
|
|
{{{981.791015625, 1469.487060546875}, {981.791015625, 1469.4859619140625}, {983.3580322265625, 1472.72900390625}, {980.9000244140625, 1474.3280029296875}}}
|
|
</div>
|
|
|
|
<div id="skpwww_aceinfographics_com_106">
|
|
{{{168, 29.6722088f}, {166, 29.6773338f}}}
|
|
{{{166.878677f, 29.6750813f}, {167.388f, 29.6763878f}, {168.019989f, 29.6769352f}}}
|
|
</div>
|
|
|
|
<div id="skpwww_tcmevents_org_13">
|
|
{{{465.84668f, 547.288391f}, {467.274506f, 552.852356f}, {468.506836f, 560.718567f}}}
|
|
{{{468.506836f, 560.718567f}, {467.336121f, 553.24585f}, {465.951904f, 547.960144f}}
|
|
</div>
|
|
|
|
<div id="skpwww_kitcheninspirations_wordpress_com_66">
|
|
{{{60.8333359f, 27820.498f}, {47.1666679f, 27820.5f}}}
|
|
{{{60.8333359f, 27820.668f}, {60.8333359f, 27820.498f}}}
|
|
{{{47.1666679f, 27820.498f}, {60.8333359f, 27820.5f}}}
|
|
{{{60.8333359f, 27820.5f}, {60.8333359f, 27820.668f}}}
|
|
</div>
|
|
|
|
<div id="skpwww_galaxystwo_com_4">
|
|
{{{10105, 2510}, {10123, 2509.98999f}}}
|
|
{{{10105, 2509.98999f}, {10123, 2510}}}
|
|
</div>
|
|
|
|
<div id="skpwww_wartepop_blogspot_com_br_6">
|
|
{{{124.666672f, 152.333344f}, {125.909309f, 152.333344f}, {126.787994f, 153.309662f}}}
|
|
{{fX=124.66666412353516 fY=152.33334350585937 }, {fX=126.78799438476562 fY=153.30966186523437 }} }
|
|
{{fX=124.66666412353516 fY=152.33334350585937 }, {fX=127.02368927001953 fY=153.30966186523437 }} }
|
|
</div>
|
|
|
|
<div id="skpwww_wartepop_blogspot_com_br_6a">
|
|
{{{124.666672f, 152.333344f}, {125.909309f, 152.333344f}, {126.787994f, 153.309662f}}}
|
|
{{fX=124.66667175292969 fY=152.33334350585937 }, {fX=126.78799438476562 fY=153.30966186523437 }} }
|
|
{{fX=124.66667175292969 fY=152.33334350585937 }, {fX=127.02368927001953 fY=153.30966186523437 }} }
|
|
</div>
|
|
|
|
<div id="skpcarrot_is24x">
|
|
{{{1020.08099, 672.16198699999995}, {1020.08002, 630.73999000000003}, {986.50201400000003, 597.16198699999995}, {945.08099400000003, 597.16198699999995}}}
|
|
{{{1020, 672}, {1020, 640.93395999999996}, {998.03301999999996, 618.96698000000004}}}
|
|
</div>
|
|
|
|
<div id="skpwww_9to5mac_com_64">
|
|
{{{{365.848175,5081.15186}, {368,5103}}},
|
|
{{{367.967712,5102.61084}, {368.278717,5105.71045}}}},
|
|
</div>
|
|
|
|
<div id="issue2753">
|
|
{{50.6,117.001}, {50.6,117.001}, {164.601,85.2}, {188.201,117.601}},
|
|
{{188.201,117.601}, {188.201,117.601}, {174.801,93}, {39,124.001}},
|
|
computed quadratics set
|
|
{{50.6,117.001}, {52.4926111,116.112083}, {81.0298889,109.956333}},
|
|
{{81.0298889,109.956333}, {109.567167,103.800583}, {142.037778,103.045}},
|
|
{{142.037778,103.045}, {174.508389,102.289417}, {188.201,117.601}},
|
|
computed quadratics set
|
|
{{188.201,117.601}, {189.210269,116.85838}, {179.697259,112.371148}},
|
|
{{179.697259,112.371148}, {170.18425,107.883917}, {138.037741,108.563519}},
|
|
{{138.037741,108.563519}, {105.891231,109.24312}, {39,124.001}},
|
|
</div>
|
|
|
|
<div id="battle6001">
|
|
{{{0.111722f, -59.999897f}, {0.0895366594f, -59.999939f}, {0.0673542097f, -59.9999695f}, {0.0451717526f, -59.9999847f}}}
|
|
{{{0.0451734141f, -59.9999847f}, {0.0438041016f, -59.9999886f}, {0.0424379632f, -59.9999886f}, {0.0410718247f, -59.9999886f}}}
|
|
</div>
|
|
|
|
<div id="fuzz763_3084">
|
|
{{{38.6568527f, 27.3431454f}, {41, 29.6862907f}, {41, 33}}}
|
|
{{{39.131218f, 27.8554096f}, {41, 30.0406685f}, {41, 33}}}
|
|
{{{44.6041069f, 27.9369583f}, {41.8078537f, 28.9057903f}, {39.131218f, 27.8554096f}}}
|
|
</div>
|
|
|
|
<div id="fuzz763_378">
|
|
{{{-52.8062439,14.1493912}, {-53.6638947,10.948595}, {-52.0070419,8.07883835}}
|
|
{{-52.8054848,14.1522331}, {-53.6633072,10.9514809}, {-52.0066071,8.08163643}}
|
|
</div>
|
|
|
|
<div id="fuzz763_378d">
|
|
{{{-37.351398500000002, 10.0082998}, {-36.493801099999999, 13.209099800000001}, {-38.150600400000002, 16.0788002}}
|
|
{{-37.350898700000002, 10.010299699999999}, {-36.493099200000003, 13.2110004}, {-38.149799299999998, 16.080900199999999}}}
|
|
{{-37.320497331221297, 10.126736679362402}, {-37.320543141534543 fY=10.126556206903867 }}
|
|
{{-37.514829818825397, 14.722977321623326}, {=-37.514249241879924 fY=14.725464892492159 }}
|
|
</div>
|
|
|
|
<div id="fuzz763_6411089">
|
|
{{38.5810318, 38.7318115}, {38.5877266, 38.7252655}, {38.5931816, 38.7199173}}
|
|
{{38.5931816, 38.7199173}, {38.5880508, 38.7249527}, {38.5810318, 38.7318115}}
|
|
</div>
|
|
|
|
</div>
|
|
|
|
<script type="text/javascript">
|
|
|
|
var testDivs = [
|
|
fuzz763_6411089,
|
|
fuzz763_378d,
|
|
fuzz763_378,
|
|
fuzz763_3084,
|
|
battle6001,
|
|
issue2753,
|
|
skpwww_9to5mac_com_64,
|
|
skpcarrot_is24x,
|
|
skpwww_wartepop_blogspot_com_br_6,
|
|
skpwww_wartepop_blogspot_com_br_6a,
|
|
skpwww_galaxystwo_com_4,
|
|
skpwww_kitcheninspirations_wordpress_com_66,
|
|
skpwww_tcmevents_org_13,
|
|
skpwww_aceinfographics_com_106,
|
|
skpwww_educationalcraft_com_4b,
|
|
skpwww_educationalcraft_com_4a,
|
|
skpwww_educationalcraft_com_4,
|
|
cubicLineErr2,
|
|
cubicLineErr1,
|
|
cubicLineMiss1,
|
|
cubicLineMiss2,
|
|
cubicLineMiss3,
|
|
cubicLineMiss4,
|
|
skpwww_pindosiya_com_99,
|
|
self1,
|
|
skpwww_seopack_blogspot_com_2153,
|
|
serp1,
|
|
serp2,
|
|
serp3,
|
|
loop1,
|
|
skpwww_maturesupertube_com_21,
|
|
skpwww_cityads_ru_249,
|
|
skpelpais_com_18,
|
|
testQuads60_b,
|
|
testQuads60_a,
|
|
testQuads60,
|
|
skpwww_dealnews_com_315_a,
|
|
skpwww_dealnews_com_315,
|
|
skpnamecheap_405,
|
|
slop1,
|
|
slop2,
|
|
slop3,
|
|
slop4,
|
|
slop5,
|
|
slop6,
|
|
slop7,
|
|
slop8,
|
|
slop9,
|
|
slop10,
|
|
slop11,
|
|
slop12,
|
|
slop13,
|
|
slop14,
|
|
slop15,
|
|
slop16,
|
|
slop17,
|
|
slop18,
|
|
slop19,
|
|
slop20,
|
|
skpcarrot_is24e,
|
|
skpcarrot_is24d,
|
|
skpcarrot_is24c,
|
|
skpcarrot_is24b,
|
|
skpcarrot_is24a,
|
|
skpcarrot_is24,
|
|
testQuads59,
|
|
testQuads45,
|
|
testQuads54,
|
|
findFirst1,
|
|
cubicOp59d,
|
|
testQuads22,
|
|
cubicOp85d,
|
|
cubicOp104,
|
|
skpnational_com_au81,
|
|
cubicOp35d,
|
|
testQuad23,
|
|
testQuad22,
|
|
testQuad21,
|
|
testQuad15,
|
|
testQuadratic56,
|
|
xop1i,
|
|
xOp2i,
|
|
xop1u,
|
|
skpwww_joomla_org_23,
|
|
cubicOp109,
|
|
cubicOp106,
|
|
cubicOp105,
|
|
carpetplanet1,
|
|
eldorado1,
|
|
cubicOp25i,
|
|
cubicOp7d,
|
|
simplifyQuadratic27,
|
|
simplifyQuadratic56a,
|
|
simplifyQuadratic56,
|
|
quadratic58again,
|
|
simplifyQuadratic58a,
|
|
simplifyQuadratic58,
|
|
simplifyQuadratic36,
|
|
quad89987,
|
|
quad8741,
|
|
quad8b,
|
|
quad8a,
|
|
quad208,
|
|
quad67242,
|
|
quad37226,
|
|
quad35237,
|
|
quad108,
|
|
quad212,
|
|
quad3160,
|
|
quad640,
|
|
quad206,
|
|
quad136,
|
|
quad113,
|
|
quad999,
|
|
quad0,
|
|
quad179,
|
|
quad4a,
|
|
quad94,
|
|
quad77,
|
|
quad22a,
|
|
quad14a,
|
|
quad809,
|
|
quad653,
|
|
quad584,
|
|
quad413,
|
|
quad379,
|
|
quad159,
|
|
quad232,
|
|
quad40,
|
|
quad39,
|
|
quad38,
|
|
quad37,
|
|
quad36,
|
|
quad35,
|
|
quad34,
|
|
quad33,
|
|
quad32,
|
|
quad31,
|
|
quad30,
|
|
quad29,
|
|
quad28,
|
|
quad27,
|
|
quad26,
|
|
quad25,
|
|
quad24,
|
|
quad23,
|
|
quad22,
|
|
quad21,
|
|
quad20,
|
|
quad19,
|
|
quad18,
|
|
quad17,
|
|
quad16,
|
|
quad15,
|
|
quad14,
|
|
quad13,
|
|
quad12,
|
|
quad11,
|
|
cubic2,
|
|
cubic1,
|
|
quad1,
|
|
quad2,
|
|
quad3,
|
|
quad4,
|
|
quad5,
|
|
quad6,
|
|
quad7,
|
|
quad8,
|
|
quad9,
|
|
quad10,
|
|
];
|
|
|
|
var tests = [];
|
|
var testTitles = [];
|
|
var testIndex = 0;
|
|
var ctx;
|
|
var subscale = 1;
|
|
var xmin, xmax, ymin, ymax;
|
|
var scale;
|
|
var initScale;
|
|
var mouseX, mouseY;
|
|
var mouseDown = false;
|
|
var srcLeft, srcTop;
|
|
var screenWidth, screenHeight;
|
|
var drawnPts;
|
|
var curveT = 0;
|
|
|
|
var lastX, lastY;
|
|
var activeCurve = [];
|
|
var activePt;
|
|
|
|
var decimal_places = 3;
|
|
|
|
var draw_t = false;
|
|
var draw_closest_t = false;
|
|
var draw_cubic_red = false;
|
|
var draw_derivative = false;
|
|
var draw_endpoints = true;
|
|
var draw_midpoint = 0;
|
|
var draw_mouse_xy = false;
|
|
var draw_order = false;
|
|
var draw_point_xy = false;
|
|
var draw_ray_intersect = false;
|
|
var draw_quarterpoint = 0;
|
|
var draw_tangents = 1;
|
|
var draw_sortpoint = 0;
|
|
var retina_scale = !!window.devicePixelRatio;
|
|
|
|
function parse(test, title) {
|
|
var curveStrs = test.split("{{");
|
|
var pattern = /-?\d+\.*\d*e?-?\d*/g;
|
|
var curves = [];
|
|
for (var c in curveStrs) {
|
|
var curveStr = curveStrs[c];
|
|
var points = curveStr.match(pattern);
|
|
var pts = [];
|
|
for (var wd in points) {
|
|
var num = parseFloat(points[wd]);
|
|
if (isNaN(num)) continue;
|
|
pts.push(num);
|
|
}
|
|
if (pts.length > 2)
|
|
curves.push(pts);
|
|
}
|
|
if (curves.length >= 1) {
|
|
tests.push(curves);
|
|
testTitles.push(title);
|
|
}
|
|
}
|
|
|
|
function init(test) {
|
|
var canvas = document.getElementById('canvas');
|
|
if (!canvas.getContext) return;
|
|
ctx = canvas.getContext('2d');
|
|
var resScale = retina_scale && window.devicePixelRatio ? window.devicePixelRatio : 1;
|
|
var unscaledWidth = window.innerWidth - 20;
|
|
var unscaledHeight = window.innerHeight - 20;
|
|
screenWidth = unscaledWidth;
|
|
screenHeight = unscaledHeight;
|
|
canvas.width = unscaledWidth * resScale;
|
|
canvas.height = unscaledHeight * resScale;
|
|
canvas.style.width = unscaledWidth + 'px';
|
|
canvas.style.height = unscaledHeight + 'px';
|
|
if (resScale != 1) {
|
|
ctx.scale(resScale, resScale);
|
|
}
|
|
xmin = Infinity;
|
|
xmax = -Infinity;
|
|
ymin = Infinity;
|
|
ymax = -Infinity;
|
|
for (var curves in test) {
|
|
var curve = test[curves];
|
|
var last = curve.length;
|
|
for (var idx = 0; idx < last; idx += 2) {
|
|
xmin = Math.min(xmin, curve[idx]);
|
|
xmax = Math.max(xmax, curve[idx]);
|
|
ymin = Math.min(ymin, curve[idx + 1]);
|
|
ymax = Math.max(ymax, curve[idx + 1]);
|
|
}
|
|
}
|
|
xmin -= 1;
|
|
var testW = xmax - xmin;
|
|
var testH = ymax - ymin;
|
|
subscale = 1;
|
|
while (testW * subscale < 0.1 && testH * subscale < 0.1) {
|
|
subscale *= 10;
|
|
}
|
|
while (testW * subscale > 10 && testH * subscale > 10) {
|
|
subscale /= 10;
|
|
}
|
|
setScale(xmin, xmax, ymin, ymax);
|
|
mouseX = (screenWidth / 2) / scale + srcLeft;
|
|
mouseY = (screenHeight / 2) / scale + srcTop;
|
|
initScale = scale;
|
|
}
|
|
|
|
function setScale(x0, x1, y0, y1) {
|
|
var srcWidth = x1 - x0;
|
|
var srcHeight = y1 - y0;
|
|
var usableWidth = screenWidth;
|
|
var xDigits = Math.ceil(Math.log(Math.abs(xmax)) / Math.log(10));
|
|
var yDigits = Math.ceil(Math.log(Math.abs(ymax)) / Math.log(10));
|
|
usableWidth -= (xDigits + yDigits) * 10;
|
|
usableWidth -= decimal_places * 10;
|
|
var hscale = usableWidth / srcWidth;
|
|
var vscale = screenHeight / srcHeight;
|
|
scale = Math.min(hscale, vscale);
|
|
var invScale = 1 / scale;
|
|
var sxmin = x0 - invScale * 5;
|
|
var symin = y0 - invScale * 10;
|
|
var sxmax = x1 + invScale * (6 * decimal_places + 10);
|
|
var symax = y1 + invScale * 10;
|
|
srcWidth = sxmax - sxmin;
|
|
srcHeight = symax - symin;
|
|
hscale = usableWidth / srcWidth;
|
|
vscale = screenHeight / srcHeight;
|
|
scale = Math.min(hscale, vscale);
|
|
srcLeft = sxmin;
|
|
srcTop = symin;
|
|
}
|
|
|
|
function dxy_at_t(curve, t) {
|
|
var dxy = {};
|
|
if (curve.length == 6) {
|
|
var a = t - 1;
|
|
var b = 1 - 2 * t;
|
|
var c = t;
|
|
dxy.x = a * curve[0] + b * curve[2] + c * curve[4];
|
|
dxy.y = a * curve[1] + b * curve[3] + c * curve[5];
|
|
} else if (curve.length == 8) {
|
|
var one_t = 1 - t;
|
|
var a = curve[0];
|
|
var b = curve[2];
|
|
var c = curve[4];
|
|
var d = curve[6];
|
|
dxy.x = 3 * ((b - a) * one_t * one_t + 2 * (c - b) * t * one_t + (d - c) * t * t);
|
|
a = curve[1];
|
|
b = curve[3];
|
|
c = curve[5];
|
|
d = curve[7];
|
|
dxy.y = 3 * ((b - a) * one_t * one_t + 2 * (c - b) * t * one_t + (d - c) * t * t);
|
|
}
|
|
return dxy;
|
|
}
|
|
|
|
var flt_epsilon = 1.19209290E-07;
|
|
|
|
function approximately_zero(A) {
|
|
return Math.abs(A) < flt_epsilon;
|
|
}
|
|
|
|
function approximately_zero_inverse(A) {
|
|
return Math.abs(A) > (1 / flt_epsilon);
|
|
}
|
|
|
|
function quad_real_roots(A, B, C) {
|
|
var s = [];
|
|
var p = B / (2 * A);
|
|
var q = C / A;
|
|
if (approximately_zero(A) && (approximately_zero_inverse(p)
|
|
|| approximately_zero_inverse(q))) {
|
|
if (approximately_zero(B)) {
|
|
if (C == 0) {
|
|
s[0] = 0;
|
|
}
|
|
return s;
|
|
}
|
|
s[0] = -C / B;
|
|
return s;
|
|
}
|
|
/* normal form: x^2 + px + q = 0 */
|
|
var p2 = p * p;
|
|
if (!approximately_zero(p2 - q) && p2 < q) {
|
|
return s;
|
|
}
|
|
var sqrt_D = 0;
|
|
if (p2 > q) {
|
|
sqrt_D = Math.sqrt(p2 - q);
|
|
}
|
|
s[0] = sqrt_D - p;
|
|
var flip = -sqrt_D - p;
|
|
if (!approximately_zero(s[0] - flip)) {
|
|
s[1] = flip;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
function cubic_real_roots(A, B, C, D) {
|
|
if (approximately_zero(A)) { // we're just a quadratic
|
|
return quad_real_roots(B, C, D);
|
|
}
|
|
if (approximately_zero(D)) { // 0 is one root
|
|
var s = quad_real_roots(A, B, C);
|
|
for (var i = 0; i < s.length; ++i) {
|
|
if (approximately_zero(s[i])) {
|
|
return s;
|
|
}
|
|
}
|
|
s.push(0);
|
|
return s;
|
|
}
|
|
if (approximately_zero(A + B + C + D)) { // 1 is one root
|
|
var s = quad_real_roots(A, A + B, -D);
|
|
for (var i = 0; i < s.length; ++i) {
|
|
if (approximately_zero(s[i] - 1)) {
|
|
return s;
|
|
}
|
|
}
|
|
s.push(1);
|
|
return s;
|
|
}
|
|
var a, b, c;
|
|
var invA = 1 / A;
|
|
a = B * invA;
|
|
b = C * invA;
|
|
c = D * invA;
|
|
var a2 = a * a;
|
|
var Q = (a2 - b * 3) / 9;
|
|
var R = (2 * a2 * a - 9 * a * b + 27 * c) / 54;
|
|
var R2 = R * R;
|
|
var Q3 = Q * Q * Q;
|
|
var R2MinusQ3 = R2 - Q3;
|
|
var adiv3 = a / 3;
|
|
var r;
|
|
var roots = [];
|
|
if (R2MinusQ3 < 0) { // we have 3 real roots
|
|
var theta = Math.acos(R / Math.sqrt(Q3));
|
|
var neg2RootQ = -2 * Math.sqrt(Q);
|
|
r = neg2RootQ * Math.cos(theta / 3) - adiv3;
|
|
roots.push(r);
|
|
r = neg2RootQ * Math.cos((theta + 2 * Math.PI) / 3) - adiv3;
|
|
if (!approximately_zero(roots[0] - r)) {
|
|
roots.push(r);
|
|
}
|
|
r = neg2RootQ * Math.cos((theta - 2 * Math.PI) / 3) - adiv3;
|
|
if (!approximately_zero(roots[0] - r) && (roots.length == 1
|
|
|| !approximately_zero(roots[1] - r))) {
|
|
roots.push(r);
|
|
}
|
|
} else { // we have 1 real root
|
|
var sqrtR2MinusQ3 = Math.sqrt(R2MinusQ3);
|
|
var A = Math.abs(R) + sqrtR2MinusQ3;
|
|
A = Math.pow(A, 1/3);
|
|
if (R > 0) {
|
|
A = -A;
|
|
}
|
|
if (A != 0) {
|
|
A += Q / A;
|
|
}
|
|
r = A - adiv3;
|
|
roots.push(r);
|
|
if (approximately_zero(R2 - Q3)) {
|
|
r = -A / 2 - adiv3;
|
|
if (!approximately_zero(s[0] - r)) {
|
|
roots.push(r);
|
|
}
|
|
}
|
|
}
|
|
return roots;
|
|
}
|
|
|
|
function approximately_zero_or_more(tValue) {
|
|
return tValue >= -flt_epsilon;
|
|
}
|
|
|
|
function approximately_one_or_less(tValue) {
|
|
return tValue <= 1 + flt_epsilon;
|
|
}
|
|
|
|
function approximately_less_than_zero(tValue) {
|
|
return tValue < flt_epsilon;
|
|
}
|
|
|
|
function approximately_greater_than_one(tValue) {
|
|
return tValue > 1 - flt_epsilon;
|
|
}
|
|
|
|
function add_valid_ts(s) {
|
|
var t = [];
|
|
nextRoot:
|
|
for (var index = 0; index < s.length; ++index) {
|
|
var tValue = s[index];
|
|
if (approximately_zero_or_more(tValue) && approximately_one_or_less(tValue)) {
|
|
if (approximately_less_than_zero(tValue)) {
|
|
tValue = 0;
|
|
} else if (approximately_greater_than_one(tValue)) {
|
|
tValue = 1;
|
|
}
|
|
for (var idx2 = 0; idx2 < t.length; ++idx2) {
|
|
if (approximately_zero(t[idx2] - tValue)) {
|
|
continue nextRoot;
|
|
}
|
|
}
|
|
t.push(tValue);
|
|
}
|
|
}
|
|
return t;
|
|
}
|
|
|
|
function quad_roots(A, B, C) {
|
|
var s = quad_real_roots(A, B, C);
|
|
var foundRoots = add_valid_ts(s);
|
|
return foundRoots;
|
|
}
|
|
|
|
function cubic_roots(A, B, C, D) {
|
|
var s = cubic_real_roots(A, B, C, D);
|
|
var foundRoots = add_valid_ts(s);
|
|
return foundRoots;
|
|
}
|
|
|
|
function ray_curve_intersect(startPt, endPt, curve) {
|
|
var adj = endPt[0] - startPt[0];
|
|
var opp = endPt[1] - startPt[1];
|
|
var r = [];
|
|
for (var n = 0; n < curve.length / 2; ++n) {
|
|
r[n] = (curve[n * 2 + 1] - startPt[1]) * adj - (curve[n * 2] - startPt[0]) * opp;
|
|
}
|
|
if (curve.length == 6) {
|
|
var A = r[2];
|
|
var B = r[1];
|
|
var C = r[0];
|
|
A += C - 2 * B; // A = a - 2*b + c
|
|
B -= C; // B = -(b - c)
|
|
return quad_roots(A, 2 * B, C);
|
|
}
|
|
var A = r[3]; // d
|
|
var B = r[2] * 3; // 3*c
|
|
var C = r[1] * 3; // 3*b
|
|
var D = r[0]; // a
|
|
A -= D - C + B; // A = -a + 3*b - 3*c + d
|
|
B += 3 * D - 2 * C; // B = 3*a - 6*b + 3*c
|
|
C -= 3 * D; // C = -3*a + 3*b
|
|
return cubic_roots(A, B, C, D);
|
|
}
|
|
|
|
function x_at_t(curve, t) {
|
|
var one_t = 1 - t;
|
|
if (curve.length == 4) {
|
|
return one_t * curve[0] + t * curve[2];
|
|
}
|
|
var one_t2 = one_t * one_t;
|
|
var t2 = t * t;
|
|
if (curve.length == 6) {
|
|
return one_t2 * curve[0] + 2 * one_t * t * curve[2] + t2 * curve[4];
|
|
}
|
|
var a = one_t2 * one_t;
|
|
var b = 3 * one_t2 * t;
|
|
var c = 3 * one_t * t2;
|
|
var d = t2 * t;
|
|
return a * curve[0] + b * curve[2] + c * curve[4] + d * curve[6];
|
|
}
|
|
|
|
function y_at_t(curve, t) {
|
|
var one_t = 1 - t;
|
|
if (curve.length == 4) {
|
|
return one_t * curve[1] + t * curve[3];
|
|
}
|
|
var one_t2 = one_t * one_t;
|
|
var t2 = t * t;
|
|
if (curve.length == 6) {
|
|
return one_t2 * curve[1] + 2 * one_t * t * curve[3] + t2 * curve[5];
|
|
}
|
|
var a = one_t2 * one_t;
|
|
var b = 3 * one_t2 * t;
|
|
var c = 3 * one_t * t2;
|
|
var d = t2 * t;
|
|
return a * curve[1] + b * curve[3] + c * curve[5] + d * curve[7];
|
|
}
|
|
|
|
function drawPointAtT(curve) {
|
|
var x = x_at_t(curve, curveT);
|
|
var y = y_at_t(curve, curveT);
|
|
drawPoint(x, y);
|
|
}
|
|
|
|
function drawLine(x1, y1, x2, y2) {
|
|
ctx.beginPath();
|
|
ctx.moveTo((x1 - srcLeft) * scale,
|
|
(y1 - srcTop) * scale);
|
|
ctx.lineTo((x2 - srcLeft) * scale,
|
|
(y2 - srcTop) * scale);
|
|
ctx.stroke();
|
|
}
|
|
|
|
function drawPoint(px, py) {
|
|
for (var pts = 0; pts < drawnPts.length; pts += 2) {
|
|
var x = drawnPts[pts];
|
|
var y = drawnPts[pts + 1];
|
|
if (px == x && py == y) {
|
|
return;
|
|
}
|
|
}
|
|
drawnPts.push(px);
|
|
drawnPts.push(py);
|
|
var _px = (px - srcLeft) * scale;
|
|
var _py = (py - srcTop) * scale;
|
|
ctx.beginPath();
|
|
ctx.arc(_px, _py, 3, 0, Math.PI * 2, true);
|
|
ctx.closePath();
|
|
ctx.stroke();
|
|
if (draw_point_xy) {
|
|
var label = px.toFixed(decimal_places) + ", " + py.toFixed(decimal_places);
|
|
ctx.font = "normal 10px Arial";
|
|
ctx.textAlign = "left";
|
|
ctx.fillStyle = "black";
|
|
ctx.fillText(label, _px + 5, _py);
|
|
}
|
|
}
|
|
|
|
function drawPointSolid(px, py) {
|
|
drawPoint(px, py);
|
|
ctx.fillStyle = "rgba(0,0,0, 0.4)";
|
|
ctx.fill();
|
|
}
|
|
|
|
function crossPt(origin, pt1, pt2) {
|
|
return ((pt1[0] - origin[0]) * (pt2[1] - origin[1])
|
|
- (pt1[1] - origin[1]) * (pt2[0] - origin[0])) > 0 ? 0 : 1;
|
|
}
|
|
|
|
// may not work well for cubics
|
|
function curveClosestT(curve, x, y) {
|
|
var closest = -1;
|
|
var closestDist = Infinity;
|
|
var l = Infinity, t = Infinity, r = -Infinity, b = -Infinity;
|
|
for (var i = 0; i < 16; ++i) {
|
|
var testX = x_at_t(curve, i / 16);
|
|
l = Math.min(testX, l);
|
|
r = Math.max(testX, r);
|
|
var testY = y_at_t(curve, i / 16);
|
|
t = Math.min(testY, t);
|
|
b = Math.max(testY, b);
|
|
var dx = testX - x;
|
|
var dy = testY - y;
|
|
var dist = dx * dx + dy * dy;
|
|
if (closestDist > dist) {
|
|
closestDist = dist;
|
|
closest = i;
|
|
}
|
|
}
|
|
var boundsX = r - l;
|
|
var boundsY = b - t;
|
|
var boundsDist = boundsX * boundsX + boundsY * boundsY;
|
|
if (closestDist > boundsDist) {
|
|
return -1;
|
|
}
|
|
console.log("closestDist = " + closestDist + " boundsDist = " + boundsDist
|
|
+ " t = " + closest / 16);
|
|
return closest / 16;
|
|
}
|
|
|
|
function draw(test, title) {
|
|
ctx.font = "normal 50px Arial";
|
|
ctx.textAlign = "left";
|
|
ctx.fillStyle = "rgba(0,0,0, 0.1)";
|
|
ctx.fillText(title, 50, 50);
|
|
ctx.font = "normal 10px Arial";
|
|
// ctx.lineWidth = "1.001"; "0.999";
|
|
var hullStarts = [];
|
|
var hullEnds = [];
|
|
var midSpokes = [];
|
|
var midDist = [];
|
|
var origin = [];
|
|
var shortSpokes = [];
|
|
var shortDist = [];
|
|
var sweeps = [];
|
|
drawnPts = [];
|
|
for (var curves in test) {
|
|
var curve = test[curves];
|
|
origin.push(curve[0]);
|
|
origin.push(curve[1]);
|
|
var startPt = [];
|
|
startPt.push(curve[2]);
|
|
startPt.push(curve[3]);
|
|
hullStarts.push(startPt);
|
|
var endPt = [];
|
|
if (curve.length == 4) {
|
|
endPt.push(curve[2]);
|
|
endPt.push(curve[3]);
|
|
} else if (curve.length == 6) {
|
|
endPt.push(curve[4]);
|
|
endPt.push(curve[5]);
|
|
} else if (curve.length == 8) {
|
|
endPt.push(curve[6]);
|
|
endPt.push(curve[7]);
|
|
}
|
|
hullEnds.push(endPt);
|
|
var sweep = crossPt(origin, startPt, endPt);
|
|
sweeps.push(sweep);
|
|
var midPt = [];
|
|
midPt.push(x_at_t(curve, 0.5));
|
|
midPt.push(y_at_t(curve, 0.5));
|
|
midSpokes.push(midPt);
|
|
var shortPt = [];
|
|
shortPt.push(x_at_t(curve, 0.25));
|
|
shortPt.push(y_at_t(curve, 0.25));
|
|
shortSpokes.push(shortPt);
|
|
var dx = midPt[0] - origin[0];
|
|
var dy = midPt[1] - origin[1];
|
|
var dist = Math.sqrt(dx * dx + dy * dy);
|
|
midDist.push(dist);
|
|
dx = shortPt[0] - origin[0];
|
|
dy = shortPt[1] - origin[1];
|
|
dist = Math.sqrt(dx * dx + dy * dy);
|
|
shortDist.push(dist);
|
|
}
|
|
var intersect = [];
|
|
var useIntersect = false;
|
|
var maxWidth = Math.max(xmax - xmin, ymax - ymin);
|
|
for (var curves in test) {
|
|
var curve = test[curves];
|
|
if (curve.length == 6 || curve.length == 8) {
|
|
var opp = curves == 0 || curves == 1 ? 0 : 1;
|
|
var sects = ray_curve_intersect(origin, hullEnds[opp], curve);
|
|
intersect.push(sects);
|
|
if (sects.length > 1) {
|
|
var intersection = sects[0];
|
|
if (intersection == 0) {
|
|
intersection = sects[1];
|
|
}
|
|
var ix = x_at_t(curve, intersection) - origin[0];
|
|
var iy = y_at_t(curve, intersection) - origin[1];
|
|
var ex = hullEnds[opp][0] - origin[0];
|
|
var ey = hullEnds[opp][1] - origin[1];
|
|
if (ix * ex >= 0 && iy * ey >= 0) {
|
|
var iDist = Math.sqrt(ix * ix + iy * iy);
|
|
var eDist = Math.sqrt(ex * ex + ey * ey);
|
|
var delta = Math.abs(iDist - eDist) / maxWidth;
|
|
if (delta > (curve.length == 6 ? 1e-5 : 1e-4)) {
|
|
useIntersect ^= true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
var midLeft = curves != 0 ? crossPt(origin, midSpokes[0], midSpokes[1]) : 0;
|
|
var firstInside;
|
|
if (useIntersect) {
|
|
var sect1 = intersect[0].length > 1;
|
|
var sIndex = sect1 ? 0 : 1;
|
|
var sects = intersect[sIndex];
|
|
var intersection = sects[0];
|
|
if (intersection == 0) {
|
|
intersection = sects[1];
|
|
}
|
|
var curve = test[sIndex];
|
|
var ix = x_at_t(curve, intersection) - origin[0];
|
|
var iy = y_at_t(curve, intersection) - origin[1];
|
|
var opp = sect1 ? 1 : 0;
|
|
var ex = hullEnds[opp][0] - origin[0];
|
|
var ey = hullEnds[opp][1] - origin[1];
|
|
var iDist = ix * ix + iy * iy;
|
|
var eDist = ex * ex + ey * ey;
|
|
firstInside = (iDist > eDist) ^ (sIndex == 0) ^ sweeps[0];
|
|
// console.log("iDist=" + iDist + " eDist=" + eDist + " sIndex=" + sIndex
|
|
// + " sweeps[0]=" + sweeps[0]);
|
|
} else {
|
|
// console.log("midLeft=" + midLeft);
|
|
firstInside = midLeft != 0;
|
|
}
|
|
var shorter = midDist[1] < midDist[0];
|
|
var shortLeft = shorter ? crossPt(origin, shortSpokes[0], midSpokes[1])
|
|
: crossPt(origin, midSpokes[0], shortSpokes[1]);
|
|
var startCross = crossPt(origin, hullStarts[0], hullStarts[1]);
|
|
var disallowShort = midLeft == startCross && midLeft == sweeps[0]
|
|
&& midLeft == sweeps[1];
|
|
|
|
// console.log("midLeft=" + midLeft + " startCross=" + startCross);
|
|
var intersectIndex = 0;
|
|
for (var curves in test) {
|
|
var curve = test[curves];
|
|
if (curve.length != 4 && curve.length != 6 && curve.length != 8) {
|
|
continue;
|
|
}
|
|
ctx.lineWidth = 1;
|
|
if (draw_tangents != 0) {
|
|
if (draw_cubic_red ? curve.length == 8 : firstInside == curves) {
|
|
ctx.strokeStyle = "rgba(255,0,0, 0.3)";
|
|
} else {
|
|
ctx.strokeStyle = "rgba(0,0,255, 0.3)";
|
|
}
|
|
drawLine(curve[0], curve[1], curve[2], curve[3]);
|
|
if (draw_tangents != 2) {
|
|
if (curve.length > 4) drawLine(curve[2], curve[3], curve[4], curve[5]);
|
|
if (curve.length > 6) drawLine(curve[4], curve[5], curve[6], curve[7]);
|
|
}
|
|
if (draw_tangents != 1) {
|
|
if (curve.length == 6) drawLine(curve[0], curve[1], curve[4], curve[5]);
|
|
if (curve.length == 8) drawLine(curve[0], curve[1], curve[6], curve[7]);
|
|
}
|
|
}
|
|
ctx.beginPath();
|
|
ctx.moveTo((curve[0] - srcLeft) * scale, (curve[1] - srcTop) * scale);
|
|
if (curve.length == 4) {
|
|
ctx.lineTo((curve[2] - srcLeft) * scale, (curve[3] - srcTop) * scale);
|
|
} else if (curve.length == 6) {
|
|
ctx.quadraticCurveTo(
|
|
(curve[2] - srcLeft) * scale, (curve[3] - srcTop) * scale,
|
|
(curve[4] - srcLeft) * scale, (curve[5] - srcTop) * scale);
|
|
} else {
|
|
ctx.bezierCurveTo(
|
|
(curve[2] - srcLeft) * scale, (curve[3] - srcTop) * scale,
|
|
(curve[4] - srcLeft) * scale, (curve[5] - srcTop) * scale,
|
|
(curve[6] - srcLeft) * scale, (curve[7] - srcTop) * scale);
|
|
}
|
|
if (draw_cubic_red ? curve.length == 8 : firstInside == curves) {
|
|
ctx.strokeStyle = "rgba(255,0,0, 1)";
|
|
} else {
|
|
ctx.strokeStyle = "rgba(0,0,255, 1)";
|
|
}
|
|
ctx.stroke();
|
|
if (draw_endpoints) {
|
|
drawPoint(curve[0], curve[1]);
|
|
drawPoint(curve[2], curve[3]);
|
|
if (curve.length > 4) drawPoint(curve[4], curve[5]);
|
|
if (curve.length > 6) drawPoint(curve[6], curve[7]);
|
|
}
|
|
if (draw_midpoint != 0) {
|
|
if ((curves == 0) == (midLeft == 0)) {
|
|
ctx.strokeStyle = "rgba(0,180,127, 0.6)";
|
|
} else {
|
|
ctx.strokeStyle = "rgba(127,0,127, 0.6)";
|
|
}
|
|
var midX = x_at_t(curve, 0.5);
|
|
var midY = y_at_t(curve, 0.5);
|
|
drawPointSolid(midX, midY);
|
|
if (draw_midpoint > 1) {
|
|
drawLine(curve[0], curve[1], midX, midY);
|
|
}
|
|
}
|
|
if (draw_quarterpoint != 0) {
|
|
if ((curves == 0) == (shortLeft == 0)) {
|
|
ctx.strokeStyle = "rgba(0,191,63, 0.6)";
|
|
} else {
|
|
ctx.strokeStyle = "rgba(63,0,191, 0.6)";
|
|
}
|
|
var midT = (curves == 0) == shorter ? 0.25 : 0.5;
|
|
var midX = x_at_t(curve, midT);
|
|
var midY = y_at_t(curve, midT);
|
|
drawPointSolid(midX, midY);
|
|
if (draw_quarterpoint > 1) {
|
|
drawLine(curve[0], curve[1], midX, midY);
|
|
}
|
|
}
|
|
if (draw_sortpoint != 0) {
|
|
if ((curves == 0) == ((disallowShort == -1 ? midLeft : shortLeft) == 0)) {
|
|
ctx.strokeStyle = "rgba(0,155,37, 0.6)";
|
|
} else {
|
|
ctx.strokeStyle = "rgba(37,0,155, 0.6)";
|
|
}
|
|
var midT = (curves == 0) == shorter && disallowShort != curves ? 0.25 : 0.5;
|
|
console.log("curves=" + curves + " disallowShort=" + disallowShort
|
|
+ " midLeft=" + midLeft + " shortLeft=" + shortLeft
|
|
+ " shorter=" + shorter + " midT=" + midT);
|
|
var midX = x_at_t(curve, midT);
|
|
var midY = y_at_t(curve, midT);
|
|
drawPointSolid(midX, midY);
|
|
if (draw_sortpoint > 1) {
|
|
drawLine(curve[0], curve[1], midX, midY);
|
|
}
|
|
}
|
|
if (draw_ray_intersect != 0) {
|
|
ctx.strokeStyle = "rgba(75,45,199, 0.6)";
|
|
if (curve.length == 6 || curve.length == 8) {
|
|
var intersections = intersect[intersectIndex];
|
|
for (var i in intersections) {
|
|
var intersection = intersections[i];
|
|
var x = x_at_t(curve, intersection);
|
|
var y = y_at_t(curve, intersection);
|
|
drawPointSolid(x, y);
|
|
if (draw_ray_intersect > 1) {
|
|
drawLine(curve[0], curve[1], x, y);
|
|
}
|
|
}
|
|
}
|
|
++intersectIndex;
|
|
}
|
|
if (draw_order) {
|
|
var px = x_at_t(curve, 0.75);
|
|
var py = y_at_t(curve, 0.75);
|
|
var _px = (px - srcLeft) * scale;
|
|
var _py = (py - srcTop) * scale;
|
|
ctx.beginPath();
|
|
ctx.arc(_px, _py, 15, 0, Math.PI * 2, true);
|
|
ctx.closePath();
|
|
ctx.fillStyle = "white";
|
|
ctx.fill();
|
|
if (draw_cubic_red ? curve.length == 8 : firstInside == curves) {
|
|
ctx.strokeStyle = "rgba(255,0,0, 1)";
|
|
ctx.fillStyle = "rgba(255,0,0, 1)";
|
|
} else {
|
|
ctx.strokeStyle = "rgba(0,0,255, 1)";
|
|
ctx.fillStyle = "rgba(0,0,255, 1)";
|
|
}
|
|
ctx.stroke();
|
|
ctx.font = "normal 16px Arial";
|
|
ctx.textAlign = "center";
|
|
ctx.fillText(parseInt(curves) + 1, _px, _py + 5);
|
|
}
|
|
if (draw_closest_t) {
|
|
var t = curveClosestT(curve, mouseX, mouseY);
|
|
if (t >= 0) {
|
|
var x = x_at_t(curve, t);
|
|
var y = y_at_t(curve, t);
|
|
drawPointSolid(x, y);
|
|
}
|
|
}
|
|
if (!approximately_zero(scale - initScale)) {
|
|
ctx.font = "normal 20px Arial";
|
|
ctx.fillStyle = "rgba(0,0,0, 0.3)";
|
|
ctx.textAlign = "right";
|
|
ctx.fillText(scale.toFixed(decimal_places) + 'x',
|
|
screenWidth - 10, screenHeight - 5);
|
|
}
|
|
if (draw_t) {
|
|
drawPointAtT(curve);
|
|
}
|
|
}
|
|
if (draw_t) {
|
|
drawCurveTControl();
|
|
}
|
|
}
|
|
|
|
function drawCurveTControl() {
|
|
ctx.lineWidth = 2;
|
|
ctx.strokeStyle = "rgba(0,0,0, 0.3)";
|
|
ctx.beginPath();
|
|
ctx.rect(screenWidth - 80, 40, 28, screenHeight - 80);
|
|
ctx.stroke();
|
|
var ty = 40 + curveT * (screenHeight - 80);
|
|
ctx.beginPath();
|
|
ctx.moveTo(screenWidth - 80, ty);
|
|
ctx.lineTo(screenWidth - 85, ty - 5);
|
|
ctx.lineTo(screenWidth - 85, ty + 5);
|
|
ctx.lineTo(screenWidth - 80, ty);
|
|
ctx.fillStyle = "rgba(0,0,0, 0.6)";
|
|
ctx.fill();
|
|
var num = curveT.toFixed(decimal_places);
|
|
ctx.font = "normal 10px Arial";
|
|
ctx.textAlign = "left";
|
|
ctx.fillText(num, screenWidth - 78, ty);
|
|
}
|
|
|
|
function ptInTControl() {
|
|
var e = window.event;
|
|
var tgt = e.target || e.srcElement;
|
|
var left = tgt.offsetLeft;
|
|
var top = tgt.offsetTop;
|
|
var x = (e.clientX - left);
|
|
var y = (e.clientY - top);
|
|
if (x < screenWidth - 80 || x > screenWidth - 50) {
|
|
return false;
|
|
}
|
|
if (y < 40 || y > screenHeight - 80) {
|
|
return false;
|
|
}
|
|
curveT = (y - 40) / (screenHeight - 120);
|
|
if (curveT < 0 || curveT > 1) {
|
|
throw "stop execution";
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function drawTop() {
|
|
init(tests[testIndex]);
|
|
redraw();
|
|
}
|
|
|
|
function redraw() {
|
|
ctx.beginPath();
|
|
ctx.rect(0, 0, ctx.canvas.width, ctx.canvas.height);
|
|
ctx.fillStyle = "white";
|
|
ctx.fill();
|
|
draw(tests[testIndex], testTitles[testIndex]);
|
|
}
|
|
|
|
function doKeyPress(evt) {
|
|
var char = String.fromCharCode(evt.charCode);
|
|
switch (char) {
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
decimal_places = char - '0';
|
|
redraw();
|
|
break;
|
|
case '-':
|
|
scale /= 2;
|
|
calcLeftTop();
|
|
redraw();
|
|
break;
|
|
case '=':
|
|
case '+':
|
|
scale *= 2;
|
|
calcLeftTop();
|
|
redraw();
|
|
break;
|
|
case 'b':
|
|
draw_cubic_red ^= true;
|
|
redraw();
|
|
break;
|
|
case 'c':
|
|
drawTop();
|
|
break;
|
|
case 'd':
|
|
var test = tests[testIndex];
|
|
var testClone = [];
|
|
for (var curves in test) {
|
|
var c = test[curves];
|
|
var cClone = [];
|
|
for (var index = 0; index < c.length; ++index) {
|
|
cClone.push(c[index]);
|
|
}
|
|
testClone.push(cClone);
|
|
}
|
|
tests.push(testClone);
|
|
testTitles.push(testTitles[testIndex] + " copy");
|
|
testIndex = tests.length - 1;
|
|
redraw();
|
|
break;
|
|
case 'e':
|
|
draw_endpoints ^= true;
|
|
redraw();
|
|
break;
|
|
case 'f':
|
|
draw_derivative ^= true;
|
|
redraw();
|
|
break;
|
|
case 'i':
|
|
draw_ray_intersect = (draw_ray_intersect + 1) % 3;
|
|
redraw();
|
|
break;
|
|
case 'l':
|
|
var test = tests[testIndex];
|
|
console.log("<div id=\"" + testTitles[testIndex] + "\" >");
|
|
for (var curves in test) {
|
|
var c = test[curves];
|
|
var s = "{{";
|
|
for (var i = 0; i < c.length; i += 2) {
|
|
s += "{";
|
|
s += c[i] + "," + c[i + 1];
|
|
s += "}";
|
|
if (i + 2 < c.length) {
|
|
s += ", ";
|
|
}
|
|
}
|
|
console.log(s + "}},");
|
|
}
|
|
console.log("</div>");
|
|
break;
|
|
case 'm':
|
|
draw_midpoint = (draw_midpoint + 1) % 3;
|
|
redraw();
|
|
break;
|
|
case 'N':
|
|
testIndex += 9;
|
|
case 'n':
|
|
testIndex = (testIndex + 1) % tests.length;
|
|
drawTop();
|
|
break;
|
|
case 'o':
|
|
draw_order ^= true;
|
|
redraw();
|
|
break;
|
|
case 'P':
|
|
testIndex -= 9;
|
|
case 'p':
|
|
if (--testIndex < 0)
|
|
testIndex = tests.length - 1;
|
|
drawTop();
|
|
break;
|
|
case 'q':
|
|
draw_quarterpoint = (draw_quarterpoint + 1) % 3;
|
|
redraw();
|
|
break;
|
|
case 'r':
|
|
for (var i = 0; i < testDivs.length; ++i) {
|
|
var title = testDivs[i].id.toString();
|
|
if (title == testTitles[testIndex]) {
|
|
var str = testDivs[i].firstChild.data;
|
|
parse(str, title);
|
|
var original = tests.pop();
|
|
testTitles.pop();
|
|
tests[testIndex] = original;
|
|
break;
|
|
}
|
|
}
|
|
redraw();
|
|
break;
|
|
case 's':
|
|
draw_sortpoint = (draw_sortpoint + 1) % 3;
|
|
redraw();
|
|
break;
|
|
case 't':
|
|
draw_t ^= true;
|
|
redraw();
|
|
break;
|
|
case 'u':
|
|
draw_closest_t ^= true;
|
|
redraw();
|
|
break;
|
|
case 'v':
|
|
draw_tangents = (draw_tangents + 1) % 4;
|
|
redraw();
|
|
break;
|
|
case 'x':
|
|
draw_point_xy ^= true;
|
|
redraw();
|
|
break;
|
|
case 'y':
|
|
draw_mouse_xy ^= true;
|
|
redraw();
|
|
break;
|
|
case '\\':
|
|
retina_scale ^= true;
|
|
drawTop();
|
|
break;
|
|
}
|
|
}
|
|
|
|
function doKeyDown(evt) {
|
|
var char = evt.keyCode;
|
|
var preventDefault = false;
|
|
switch (char) {
|
|
case 37: // left arrow
|
|
if (evt.shiftKey) {
|
|
testIndex -= 9;
|
|
}
|
|
if (--testIndex < 0)
|
|
testIndex = tests.length - 1;
|
|
drawTop();
|
|
preventDefault = true;
|
|
break;
|
|
case 39: // right arrow
|
|
if (evt.shiftKey) {
|
|
testIndex += 9;
|
|
}
|
|
if (++testIndex >= tests.length)
|
|
testIndex = 0;
|
|
drawTop();
|
|
preventDefault = true;
|
|
break;
|
|
}
|
|
if (preventDefault) {
|
|
evt.preventDefault();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function calcXY() {
|
|
var e = window.event;
|
|
var tgt = e.target || e.srcElement;
|
|
var left = tgt.offsetLeft;
|
|
var top = tgt.offsetTop;
|
|
mouseX = (e.clientX - left) / scale + srcLeft;
|
|
mouseY = (e.clientY - top) / scale + srcTop;
|
|
}
|
|
|
|
function calcLeftTop() {
|
|
srcLeft = mouseX - screenWidth / 2 / scale;
|
|
srcTop = mouseY - screenHeight / 2 / scale;
|
|
}
|
|
|
|
function handleMouseClick() {
|
|
if (!draw_t || !ptInTControl()) {
|
|
calcXY();
|
|
} else {
|
|
redraw();
|
|
}
|
|
}
|
|
|
|
function initDown() {
|
|
var test = tests[testIndex];
|
|
var bestDistance = 1000000;
|
|
activePt = -1;
|
|
for (var curves in test) {
|
|
var testCurve = test[curves];
|
|
if (testCurve.length != 4 && testCurve.length != 6 && testCurve.length != 8) {
|
|
continue;
|
|
}
|
|
for (var i = 0; i < testCurve.length; i += 2) {
|
|
var testX = testCurve[i];
|
|
var testY = testCurve[i + 1];
|
|
var dx = testX - mouseX;
|
|
var dy = testY - mouseY;
|
|
var dist = dx * dx + dy * dy;
|
|
if (dist > bestDistance) {
|
|
continue;
|
|
}
|
|
activeCurve = testCurve;
|
|
activePt = i;
|
|
bestDistance = dist;
|
|
}
|
|
}
|
|
if (activePt >= 0) {
|
|
lastX = mouseX;
|
|
lastY = mouseY;
|
|
}
|
|
}
|
|
|
|
function handleMouseOver() {
|
|
calcXY();
|
|
if (draw_mouse_xy) {
|
|
var num = mouseX.toFixed(decimal_places) + ", " + mouseY.toFixed(decimal_places);
|
|
ctx.beginPath();
|
|
ctx.rect(300, 100, num.length * 6, 10);
|
|
ctx.fillStyle = "white";
|
|
ctx.fill();
|
|
ctx.font = "normal 10px Arial";
|
|
ctx.fillStyle = "black";
|
|
ctx.textAlign = "left";
|
|
ctx.fillText(num, 300, 108);
|
|
}
|
|
if (!mouseDown) {
|
|
activePt = -1;
|
|
return;
|
|
}
|
|
if (activePt < 0) {
|
|
initDown();
|
|
return;
|
|
}
|
|
var deltaX = mouseX - lastX;
|
|
var deltaY = mouseY - lastY;
|
|
lastX = mouseX;
|
|
lastY = mouseY;
|
|
if (activePt == 0) {
|
|
var test = tests[testIndex];
|
|
for (var curves in test) {
|
|
var testCurve = test[curves];
|
|
testCurve[0] += deltaX;
|
|
testCurve[1] += deltaY;
|
|
}
|
|
} else {
|
|
activeCurve[activePt] += deltaX;
|
|
activeCurve[activePt + 1] += deltaY;
|
|
}
|
|
redraw();
|
|
}
|
|
|
|
function start() {
|
|
for (var i = 0; i < testDivs.length; ++i) {
|
|
var title = testDivs[i].id.toString();
|
|
var str = testDivs[i].firstChild.data;
|
|
parse(str, title);
|
|
}
|
|
drawTop();
|
|
window.addEventListener('keypress', doKeyPress, true);
|
|
window.addEventListener('keydown', doKeyDown, true);
|
|
window.onresize = function () {
|
|
drawTop();
|
|
}
|
|
}
|
|
|
|
</script>
|
|
</head>
|
|
|
|
<body onLoad="start();">
|
|
|
|
<canvas id="canvas" width="750" height="500"
|
|
onmousedown="mouseDown = true"
|
|
onmouseup="mouseDown = false"
|
|
onmousemove="handleMouseOver()"
|
|
onclick="handleMouseClick()"
|
|
></canvas >
|
|
</body>
|
|
</html> |