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什么是极坐标? —— 一点微小的想法 What is Polar Coordinate ? - Some Naive Thoughts about It
Can you answer these three questions? The answer seems to be trivial, since we can use our eyes to obtain the answer. But can you use mathematical met ...
分类:其他好文   时间:2018-02-07 19:29:30    阅读次数:183
Graphics.DrawRectangle Method(矩形)
Overload List Name Description DrawRectangle(Pen,?Int32,?Int32,?Int32,?Int32) Draws a rectangle specified by a coordinate pair, a width, and a height. ...
分类:其他好文   时间:2018-01-21 11:00:41    阅读次数:172
[leetcode]Geometry-587. Erect the Fence
There are some trees, where each tree is represented by (x,y) coordinate in a two-dimensional garden. Your job is to fence the entire garden using the ...
分类:其他好文   时间:2018-01-13 20:51:04    阅读次数:185
Geometry-587. Erect the Fence
There are some trees, where each tree is represented by (x,y) coordinate in a two-dimensional garden. Your job is to fence the entire garden using the ...
分类:其他好文   时间:2018-01-13 11:15:26    阅读次数:218
qml----定位信息
QtPositioning类提供了位置信息,使用它时导入 import QtPositioning 常用的到有全局QtPostioning对象、PostionSource类、Postion类以及coordinate类,其中coordinate类表示地理位置,经、纬、高度以及距离和方位角的计算等等Po ...
分类:其他好文   时间:2018-01-10 11:43:08    阅读次数:155
Leetcode 593: Valid Square
Given the coordinates of four points in 2D space, return whether the four points could construct a square. The coordinate (x,y) of a point is represen ...
分类:其他好文   时间:2017-12-30 12:30:04    阅读次数:105
Leetcode:11- Container With Most Water
Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpo ...
分类:其他好文   时间:2017-12-27 14:09:50    阅读次数:140
OpenGL坐标系统
一、坐标系统概述 本文类容见 "LearnOpenGL CN" 。直接copy过来留个存档。 OpenGL希望每次顶点着色后,我们的可见顶点都为标准化设备坐标(Normalized Device Coordinate,NDC)。也就是说每个顶点的$z,y,z$都应该在$ 1$到$1$之间,超出这个范 ...
分类:其他好文   时间:2017-12-25 20:58:14    阅读次数:161
运算符重载
运算符重载的意思就是给原有的运算符赋值新的功能,来满足我们更多的需求。 运算符重载可以分为两种形式:一、一元运算符重载 (-)负号的重载: 友元函数的重载: friend coordinate operator-(const coordinate &coor) 成员函数的重载: coordinate ...
分类:其他好文   时间:2017-12-17 00:59:14    阅读次数:130
[LeetCode] Flood Fill 洪水填充
An image is represented by a 2-D array of integers, each integer representing the pixel value of the image (from 0 to 65535). Given a coordinate (sr, ...
分类:其他好文   时间:2017-12-05 23:55:46    阅读次数:336
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