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| {{{-728.5626220703125, 141.134521484375}, {749.9122314453125, -645.93359375}, {67.1751708984375, -285.85528564453125}}}, |
| {{{-728.5626220703125, 141.134521484375}, {-841.0341796875, -988.058349609375}, {34.87939453125, -489.359130859375}}} |
| {{{276.48354206343231, -395.24293552482953}, {-728.5626220703125, 141.134521484375}}} |
| {{{fX=97.702285839737073, -301.95147049201717}, {-728.5626220703125, 141.134521484375}}} |
| {{{fX=-52.525628917174856, -536.31069276053427}, {-728.5626220703125, 141.134521484375}}} |
| {{{fX=-5.2463328209585285, -511.63085965304060}, {-728.5626220703125, 141.134521484375}}} |
| </div> |
| |
| <div id="quad77"> |
| {{{383.7933349609375, -397.5057373046875}, {480.7408447265625, 92.927490234375}, {690.7930908203125, -267.44964599609375}}}, |
| {{{383.7933349609375, -397.5057373046875}, {83.3685302734375, 619.781005859375}, {688.14111328125, 416.241455078125}}} |
| </div> |
| |
| <div id="quad94"> |
| {{{627.6910400390625, 81.144287109375}, {168.9248046875, -211.72735595703125}, {-61.57086181640625, 915.171875}}}, |
| {{{627.6910400390625, 81.144287109375}, {918.159423828125, -325.468994140625}, {359.0523681640625, 817.4888916015625}}} |
| {{{564.43435948662466, 47.034527772832369}, {627.6910400390625, 81.144287109375}}} |
| {{{699.34014109378302, 79.147174806567705}, {627.6910400390625, 81.144287109375}}} |
| </div> |
| |
| <div id="quad4a"> |
| {{{187.410400390625, -343.557373046875}, {-752.7930908203125, 431.57177734375}, {387.663330078125, 701.281982421875}}}, |
| {{{187.410400390625, -343.557373046875}, {-86.16302490234375, -366.027099609375}, {-468.3883056640625, -25.736572265625}}} |
| </div> |
| |
| <div id="quad0"> |
| {{{-708.0077926931004413, -154.6166947224404566}, {-701.0429781735874712, -128.8517387364408933}, {505.58447265625, -504.9130859375}}}, |
| {{{-708.0077926931004413, -154.6166947224404566}, {-721.5125661899801344, -174.4028951148648048}, {-32.39227294921875, -906.3277587890625}}} |
| {{{-707.8363172079705237, -154.25350453766481}, {-708.0077926931004413, -154.6166947224404566}}} |
| {{{-708.1792267111628689, -154.9799046892118213}, {-708.0077926931004413, -154.6166947224404566}}} |
| </div> |
| |
| <div id="quad999"> |
| {{{-708.00779269310044, -154.61669472244046}, {-707.92342686353186, -154.30459999551294}, {505.58447265625, -504.9130859375}}}, |
| {{{-708.00779269310044, -154.61669472244046}, {-708.1713780141481, -154.85636789757655}, {-32.39227294921875, -906.3277587890625}}} |
| {{{-708.0077672218041, -154.61664072892336}, {-708.00779269310044, -154.61669472244046}}} |
| {{{-708.00781827681976, -154.61674895426012}, {-708.00779269310044, -154.61669472244046}}} |
| </div> |
| |
| <div id="quad113"> |
| {{{425.018310546875, -866.61865234375}, {-918.76531982421875, 209.05322265625}, {964.34716796875, 199.52587890625}}}, |
| {{{425.018310546875, -866.61865234375}, {703.10693359375, -955.0738525390625}, {-952.24664306640625, -717.94775390625}}} |
| </div> |
| |
| <div id="quad136"> |
| {{{178.1549072265625, 62.724609375}, {541.3643798828125, 223.823486328125}, {-446.77471923828125, -15.990478515625}}}, |
| {{{178.1549072265625, 62.724609375}, {-347.14031982421875, -834.27191162109375}, {-495.138885498046875, 96.476806640625}}} |
| </div> |
| |
| <div id="quad206"> |
| {{{-503.007415771484375, -318.59490966796875}, {-798.330810546875, -881.21630859375}, {-127.2027587890625, 769.6160888671875}}}, |
| {{{-503.007415771484375, -318.59490966796875}, {-153.6217041015625, -776.896728515625}, {-378.43701171875, -296.3197021484375}}} |
| {{{-468.9176053311167607, -89.39573455985038208}, {-503.007415771484375, -318.59490966796875}}} |
| {{{-356.1573846604815685, -497.6768266540607328}, {-503.007415771484375, -318.59490966796875}}} |
| {{{-559.0376987487186398, -420.2054253473417589}, {-503.007415771484375, -318.59490966796875}}} |
| {{{-431.6586315464865606, -409.8353728177644371}, {-503.007415771484375, -318.59490966796875}}} |
| </div> |
| |
| <div id="quad640"> |
| {{{412.260498046875, 49.193603515625}, {838.97900390625, 86.9951171875}, {427.7896728515625, -605.6881103515625}}}, |
| {{{412.260498046875, 49.193603515625}, {-995.54583740234375, 990.032470703125}, {-881.18670654296875, 461.211669921875}}} |
| </div> |
| |
| <div id="quad3160"> |
| {{{426.645751953125, 813.79150390625}, {-387.23828125, -588.89483642578125}, {792.4261474609375, -704.4637451171875}}}, |
| {{{426.645751953125, 813.79150390625}, {19.24896240234375, -416.09906005859375}, {233.8497314453125, 350.778564453125}}} |
| </div> |
| |
| <div id="quad35237"> |
| {{{-770.8492431640625, 948.2369384765625}, {-853.37066650390625, 972.0301513671875}, {-200.62042236328125, -26.7174072265625}}}, |
| {{{-770.8492431640625, 948.2369384765625}, {513.602783203125, 578.8681640625}, {960.641357421875, -813.69757080078125}}} |
| </div> |
| |
| <div id="quad37226"> |
| {{{563.8267822265625, -107.4566650390625}, {-44.67724609375, -136.57452392578125}, {492.3856201171875, -268.79644775390625}}}, |
| {{{563.8267822265625, -107.4566650390625}, {708.049072265625, -100.77789306640625}, {-48.88226318359375, 967.9022216796875}}} |
| </div> |
| |
| <div id="quad67242"> |
| {{{598.857421875, 846.345458984375}, {-644.095703125, -316.12921142578125}, {-97.64599609375, 20.6158447265625}}}, |
| {{{598.857421875, 846.345458984375}, {715.7142333984375, 955.3599853515625}, {-919.9478759765625, 691.611328125}}} |
| </div> |
| |
| <div id="quad208"> |
| {{{481.1463623046875, -687.09613037109375}, {643.64697265625, -951.9462890625}, {162.5869140625, 698.7342529296875}}}, |
| {{{481.1463623046875, -687.09613037109375}, {171.8175048828125, -919.07977294921875}, {153.3433837890625, -587.43072509765625}}} |
| </div> |
| |
| <div id="quad8a"> |
| {{{344.2755126953125, -689.900390625}, {743.6728515625, 512.8448486328125}, {928.598388671875, 111.946044921875}}}, |
| {{{344.2755126953125, -689.900390625}, {-950.03106689453125, -511.25741577148437}, {850.8173828125, 798.4874267578125}}} |
| </div> |
| |
| <div id="quad8b"> |
| {{{344.2755126953125, -689.900390625}, {928.598388671875, 111.946044921875}, {743.6728515625, 512.8448486328125}}}, |
| {{{344.2755126953125, -689.900390625}, {-950.03106689453125, -511.25741577148437}, {850.8173828125, 798.4874267578125}}} |
| </div> |
| |
| <div id="quad8741"> |
| {{{944.9024658203125, 939.454345703125}, {-971.06219482421875, -914.24395751953125}, {-878.764404296875, -297.61602783203125}}}, |
| {{{944.9024658203125, 939.454345703125}, {-838.96612548828125, -785.837646484375}, {-126.80029296875, 921.1981201171875}}} |
| {{{107.03238931174118, 218.460612766889}, {944.9024658203125, 939.454345703125}}} |
| {{{-292.72752350740279, 99.917575976335598}, {944.9024658203125, 939.454345703125}}} |
| </div> |
| |
| <div id="quad89987"> |
| {{{939.4808349609375, 914.355224609375}, {-357.7921142578125, 590.842529296875}, {736.8936767578125, -350.717529296875}}}, |
| {{{939.4808349609375, 914.355224609375}, {-182.85418701171875, 634.4552001953125}, {-509.62615966796875, 576.1182861328125}}} |
| </div> |
| |
| <div id="simplifyQuadratic36"> |
| {{{1.9474306106567383, 2.3777823448181152}, {1.9234547048814592, 2.2418855043499213}, {1.8885438442230225, 2.1114561557769775}}} |
| {{{1.9474306106567383, 2.3777823448181152}, {2.0764266380046235, 2.2048800651418379}, {1.8888888359069824, 2.1111111640930176}}} |
| </div> |
| |
| <div id="simplifyQuadratic58"> |
| {{326.236786,205.854996}, {329.104431,231.663818}, {351.512085,231.663818}} |
| {{303.12088,141.299606}, {330.463562,217.659027}} |
| </div> |
| |
| <div id="simplifyQuadratic58a"> |
| {{{326.23678588867188, 205.85499572753906}, {328.04376176056422, 222.11778818951981}, {337.6092529296875, 228.13298034667969} |
| {{{303.12088012695312, 141.29960632324219}, {330.46356201171875, 217.65902709960937} |
| </div> |
| |
| <div id="quadratic58again"> |
| {{322.935669,231.030273}, {312.832214,220.393295}, {312.832214,203.454178}} |
| {{322.12738,233.397751}, {295.718353,159.505829}} |
| </div> |
| |
| <div id="simplifyQuadratic56"> |
| {{{380.29449462890625, 140.44486999511719}, {387.29080200195312, 136.67460632324219}, {396.0399169921875, 136.67460632324219}}} |
| {{{380.29449462890625, 140.44486999511719}, {388.29925537109375, 136.67460632324219}, {398.16494750976562, 136.67460632324219}}} |
| {{{380.29449462890625, 140.44486999511719}, {387.692810, 137.858429}}} |
| </div> |
| |
| <div id="simplifyQuadratic56a"> |
| {{{380.29449462890625, 140.44486999511719}, {387.29079954793264, 136.67460632324219}, {396.0399169921875, 136.67460632324219}}} |
| {{{380.29449462890625, 140.44486999511719}, {388.29925767018653, 136.67460632324219}, {398.16494750976562, 136.67460632324219}}} |
| {{fX=380.29449462890625 fY=140.44486999511719 }, {fX=398.16494750976562 fY=136.67460632324219 }} } |
| {{fX=380.29449462890625 fY=140.44486999511719 }, {fX=396.03991699218750 fY=136.67460632324219 }} |
| </div> |
| |
| <div id="simplifyQuadratic27"> |
| {{{1, 1}, {1, 0.666666687f}, {0.888888896f, 0.444444448f}}} |
| {{{1, 1}, {1, 0.5f}, {0, 0}}} |
| {{fX=1.0000000000000000 fY=1.0000000000000000 }, {fX=0.00000000000000000 fY=0.00000000000000000 }} } |
| {{fX=1.0000000000000000 fY=1.0000000000000000 }, {fX=0.88888889551162720 fY=0.44444444775581360 }} } |
| </div> |
| |
| <div id="cubicOp7d"> |
| {{{0.7114982008934021, 1.6617077589035034}, {0.51239079236984253, 1.4952657222747803}, {0.27760171890258789, 1.2776017189025879}, {0, 1}}} |
| {{{0.7114982008934021, 1.6617077589035034}, {0.20600014925003052, 1.7854888439178467}, {9.8686491813063348e-017, 1.9077447652816772}, {0, 1}}} |
| </div> |
| |
| <div id="cubicOp25i"> |
| {{{3.3856770992279053, 1.6298094987869263}, {3.777235186270762, 1.2744716237277114}, {3.7191683314895783, 1.4127666421509713}, {3.3995792865753174, 1.6371387243270874}}} |
| {{{3.3856770992279053, 1.6298094987869263}, {3.3902986605112582, 1.6322361865810757}, {3.3949326825525121, 1.6346792563210237}, {3.3995792865753174, 1.6371387243270874}}} |
| {{3.3856770992279053, 1.6298094987869263 }, {3.3995792865753174, 1.6371387243270874 }} |
| </div> |
| |
| <div id="eldorado1"> |
| {{{1006.69513f, 291}, {1023.26367f, 291}, {1033.84021f, 304.431458f}, {1030.31836f, 321}}} |
| {{{1030.318359375, 321}, {1036.695068359375, 291}}} |
| {{fX=1030.3183593750000 fY=321.00000000000000 }, {fX=1006.6951293945312 fY=291.00000000000000 }} } |
| </div> |
| |
| <div id="carpetplanet1"> |
| {{fX=67.000000000000000, 913.00000000000000 }, {194.00000000000000, 1041.0000000000000 }} } |
| {{fX=67.000000000000000, 913.00000000000000 }, {67.662002563476562, 926.00000000000000 }} } |
| {{{67, 913}, {67, 917.388977f}, {67.223999f, 921.726013f}, {67.6620026f, 926}}} |
| {{{67, 913}, {67, 983.692017f}, {123.860001f, 1041}, {194, 1041}}} |
| {{{67, 913}, {67.17070902440698, 919.69443917507760}}} |
| </div> |
| |
| <div id="cubicOp104"> |
| {{{2.25, 2.5}, {4.5, 1}}} |
| {{{2.25, 2.5}, {3.0833333333333321, 1.9999999999999973}, {4.0277778307596899, 1.2777777777777759}, {4.8611111640930176, 1}}} |
| {{{2.25, 2.5}, {1.9476099234472042, 2.6814340459316774}, {1.6598502000264239, 2.8336073904096661}, {1.3973386287689209, 2.9246666431427002}}} |
| {{{2.25, 2.5}, {1.2674896717071533, 3.1550068855285645}}} |
| </div> |
| |
| <div id="cubicOp105"> |
| {{{2.4060275554656982, 3.4971563816070557}, {2.9702522134213849, 4.2195279679982622}, {3.8172613958721247, 5.0538091166976979}, {5, 6}}} |
| {{{2.4060275554656982, 3.4971563816070557}, {3.4194286958002023, 3.5574883660881684}, {4.0077197935900575, 2.6628073781813661}, {2.2602717876434326, 0.33545622229576111}}} |
| </div> |
| |
| <div id="cubicOp106"> |
| {{{0.80825299024581909, 1.9691258668899536}, {0.8601454496383667, 1.9885541200637817}, {0.92434978485107422, 2}, {1, 2}}} |
| {{{0.80825299024581909, 1.9691258668899536}, {2.2400102615356445, 3.5966837406158447}, {2.5486805438995361, 3.362929105758667}, {2.494147777557373, 2.5976591110229492}}} |
| {{{0.80825299024581909, 1.9691258668899536}, {2.494147777557373, 2.5976591110229492}}} |
| {{{0.80825299024581909, 1.9691258668899536}, {1, 2}}} |
| </div> |
| |
| <div id="cubicOp109"> |
| {{{5, 4}, {5.443139240552143931, 3.556860759447856069}, {5.297161243696338673, 3.702838775882067335}, {4.649086475372314453, 3.654751062393188477}}} |
| {{{5, 4}, {4.876459521889748849, 3.876459521889748849}, {4.759596556247283949, 3.761504502886134915}, {4.649086475372314453, 3.654751062393188477}}} |
| </div> |
| |
| <div id="skpwww_joomla_org_23"> |
| {{{421, 378}, {421, 380.209137f}, {418.761414f, 382}, {416, 382}}} |
| {{{320, 378}, {421, 378.000031f}}} |
| {{{421, 378.000031f}, {421, 383}}} |
| {{{416, 383}, {418.761414f, 383}, {421, 380.761414f}, {421, 378}}} |
| </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> |
| |
| <script type="text/javascript"> |
| |
| var testDivs = [ |
| 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_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 (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 (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 (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 '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> |