FOJ
Hotter Colder
http://acm.fzu.edu.cn/problem.php?pid=1014
求線段的中位線,線段相交求交點,求凸多邊形的面積,
無歸之室
http://acm.fzu.edu.cn/problem.php?pid=1016
本題精度要求非常高,用三角函數的話,很容易就wa..
Reflections
http://acm.fzu.edu.cn/problem.php?pid=1035
求一條射線遇到圓后的反射光,
即圓和直線求交點,求點關于交點法線的對稱點。
Pipe
http://acm.fzu.edu.cn/problem.php?pid=1088
求一條光線從管道口進入,最遠能達到多遠。
判斷線段左右位置關系,求線段相交交點。
A Pilot in Danger!
http://acm.fzu.edu.cn/problem.php?pid=1120
判斷點在區域內
Area in Triangle
http://acm.fzu.edu.cn/problem.php?pid=1195
在三角形內的氣球膨脹,求膨脹后的面積。
分情況推公式
Triangle
http://acm.fzu.edu.cn/problem.php?pid=1302
在給定的n( 1<=n<=50000)個點中,取3個點組成三角形,求面積最大。
顯然這3個點在凸包上,點集凸包化+凸包上的點k^2(原來要k^3的,利用某些性質剪枝,降到k^2).
Area
http://acm.fzu.edu.cn/problem.php?pid=1329
Pick定理
Center of Gravity
http://acm.fzu.edu.cn/problem.php?pid=1330
已知半徑,角度的扇形,求其重心到圓心的距離。
Stone
http://acm.fzu.edu.cn/problem.php?pid=1331
求多邊形的重心
Surround the Trees
http://acm.fzu.edu.cn/problem.php?pid=1333
凸包
Star not a Tree?
http://acm.fzu.edu.cn/problem.php?pid=1355
費馬點
Coplanar Points
http://acm.fzu.edu.cn/problem.php?pid=1393
利用差積判斷4點共面。
長方形的并的面積
http://acm.fzu.edu.cn/problem.php?pid=1407
離散化
Common Area
http://acm.fzu.edu.cn/problem.php?pid=1472
三角形和圓的共同面積。
彈弓
http://acm.fzu.edu.cn/problem.php?pid=1482
n(1<=n<=700)個點中,最多有多少個點在同一條直線上。
牧場
http://acm.fzu.edu.cn/problem.php?pid=1485
n(2<=n<=100)個點中,取其中部分點組成的一個凸多邊形,求這樣的凸多邊形的最大頂點數.
Oaiei's Trouble
http://acm.fzu.edu.cn/problem.php?pid=1510
圖形學中的直線剪裁算法,可以用計算幾何中的點和線段的關系,線段和線段的求交點來求解。
Defense the country
http://acm.fzu.edu.cn/problem.php?pid=1338
Treasure Hunt
http://acm.fzu.edu.cn/problem.php?pid=1332
線段相交
Minkowski Sum
http://acm.fzu.edu.cn/problem.php?pid=1379
Area Ratio
http://acm.fzu.edu.cn/problem.php?pid=1382
求三角形的內切圓,外接圓
Video Surveillance
http://acm.fzu.edu.cn/problem.php?pid=1032
簡單題
最大可分離值問題
http://acm.fzu.edu.cn/problem.php?pid=1201
POJ
http://acm.pku.edu.cn/JudgeOnline/
這些題的解題報告
http://old.blog.edu.cn/user3/Hailer/archives/2008/2158935.shtml
1031 Fence
1039 Pipe
1092 Farmland
1106 Transmitters
1113 Wall
1118 Lining Up
1133 Stars
1151 Atlantis
1225 STRICTLY INSCRIBED SIMILAR TRIANGLES
1259 The Picnic
1263 Reflections
1265 Area
1266 Cover an Arc.
1269 Intersecting Lines
1271 Nice Milk
1279 Art Gallery
1294 Not Too Convex Hull
1319 Pipe Fitters
1347 Triangle
1361 JaWs
1375 Intervals
1379 Run Away
1389 Area of Simple Polygons
1408 Fishnet
1410 Intersection
1418 Viva Confetti
1428 Hermes' Colony
1434 Fill the Cisterns!
1444 Parallelepiped walk
1471 Triangles
1473 There's Treasure Everywhere!
1494 Sunrise
1499 Supercomputer Selection, The Sequel
1500 Polygonal Puzzle
1514 Metal Cutting
1518 Problem Bee
1536 Trains
1556 The Doors
1569 Myacm Triangles
1584 A Round Peg in a Ground Hole
1586 Three Sides Make a Triangle
1605 Horse Shoe Scoring
1610 Quad Trees
1623 Squadtrees
1624 This Takes the Cake
1645 BSP Trees
1654 Area
1660 Princess FroG
1673 EXOCENTER OF A TRIANGLE
1685 Color Tunnels
1687 Buggy Sat
1688 Dolphin Pool
1693 Counting Rectangles
1696 Space Ant
1727 Advanced Causal Measurements (ACM)
1758 Frontier
1765 November Rain
1774 Fold Paper Strips
1803 Box Art
1810 Covering
1813 Overlapped Shapes
1819 Disks
1834 線段處理
1843 Shire
1851 Map
1871 Bullet Hole
1873 The Fortified Forest
1875 Robot
1877 Flooded!
1881 Sail Race
1899 Farmer Bill's Problem
1902 Illumination
1912 A highway and the seven dwarfs
1921 Paper Cut
1927 Area in Triangle
1931 Biometrics
1937 Balanced Food
1939 Diplomatic License
1940 Polygon Programming with Ease
1956 Pumps and Pipes
1971 Parallelogram Counting
1981 Circle and Points
1982 Water Tank
2007 Scrambled Polygon
2012 Triangle Cuts
2016 Ink Blots
2026 As the Crow Flies
2031 Building a Space Station
2036 I Conduit!
2043 Area of Polygons
2048 Monster Trap
2053 Square
2066 Minimax Triangulation
2069 Super Star
2074 Line of Sight
2079 Triangle
2087 Petanque
2098 Ellipse
2130 Jogging
2149 Inherit the Spheres
2150 Crossing Prisms
2164 Find the Border
2165 Gunman
2172 Bricks
2177 Ghost Busters
2284 That Nice Euler Circuit
2621 Parallelepiped
2622 Convex hull
2686 Traveling by Stagecoach
2687 Earth Observation with a Mobile Robot Team
2747 Shy Polygons
2839 Convex Hull and Triangle
2932 Coneology
2954 Triangle
3011 Secrets in Shadows
3129 How I Wonder What You Are!
3130 How I Mathematician Wonder What You Are!
3135 Polygons on the Grid
3334 Connected Gheeves
3335 Rotating Scoreboard
3347 Kadj Squares
3384 Feng Shui
3407 Brookebond s'en va en guerre...
3410 Split convex polygon
3608 Bridge Across Islands
ZOJ
zoj相關練習題
1597 1608 1648 1683
1910 2102 2157 2318
2335 2347 2352 2361
2370 2375 2403
2015(中歐1999正賽)
2107(浙江2004省賽)
2228(北京2004預賽題,難)
2234(北京2004預賽題)
2214(北京2004正賽題,費馬點,知道該知識點=〉易解,否則=〉不可能)
2394(上海2004正賽題)
主要內容(仔細核對,看看自己哪些未掌握):
判斷線段相交;
判斷直線相交;
判斷點是否在多邊形內;
求凸包;
凸多邊形面積計算;
矩形的交與并(掃描法);
已知三點求三角形面積(包括海倫公式)和重心;
已知三點求外接圓和內接圓圓心、半徑、面積 ;
最近點對問題;
最遠點對問題;
點集或圖形集合的最小覆蓋圓;
點集或圖形集合的最小覆蓋矩形;
三角剖分;
費爾馬點的計算;
posted on 2010-10-12 17:36
孟起 閱讀(689)
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計算幾何