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Description: 我的程序是用C语言编的一个画图软件，满足以下几点： 用某种方法实现圆的生成算法。 实现橡皮筋直线、圆、矩形。 实现多边形裁剪。 实现基本几何变换（平移、旋转、缩放）。 实现Bezier曲线或B样条曲线。 最终呈现的结果是一个小型的交互式图形系统，用界面把所有功能串连起来。-the procedures I used the C language is part of a drawing software to meet the following points : the use of a certain method of generating algorithm round. Achieving rubber-band linear, circular and rectangular. Achieving polygon clipping. To achieve basic geometry transformation (translation, rotation, zoom). Achieving Bezier curve or B-spline curves. The final results show is a small interactive graphics system, with all the functional interface to link up.
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Size: 5316 |
Author: 李玮玮 |
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Description: 一个画nurbs曲面的vc程序 可能贵站已经有此代码 贵站有许多程序代码我非常有用 需要写进我工作所要做的dxf数据转换程序中 希望站长能开通我的帐号 让我下载贵站代码完成我的工作 完成后我会将代码上传 那是一个将dxf转换成 点 线 面的程序 会转换所有 dxf平面 图形 所有平面的 块 图层 颜色 填充体 现在只差dxf的样条曲线 就会完成 程序 贵站有我需要的B样条 nurbs等 曲线的代码 会帮助我完成程序 完成后我会将代码 上传 我的程序 汇集了 GIS系统 数据转换系统 实现了一些 较难 图形了的算法 如斜椭圆 斜椭圆弧 样条曲线 的算法 一个程序绝对 可以顶5个 希望站长 先能开通我的帐号-a painting NURBS surfaces vc Guizhan procedures may have this code Guizhan many of the code I need to be very useful part of my work to be done dxf data conversion program director can hope to open my account so I downloaded code Guizhan finish my work I will be completed after the code is uploaded to a dxf conversion-point line will change the procedures for all dxf graphic block all planar layer colors filled only a dxf reflected in the kind of curve will be completed procedures Guizhan I need a B-spline curves, such as NURBS code will help me complete the formalities are completed I will upload the code procedures pool of GIS data conversion system more difficult to achieve some of the graphics algorithms such as ramps elliptical ramp ellipse spline curve algorithm a procedure can certa
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Size: 55258 |
Author: zhen |
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Description: 在中小型电力行业系统中，曲线的要求比较严格，虽然网络上面各种曲线控件非常多，但是很多只能提供一段时间的曲线显示或者历史若干个点的显示。比如在一个普通的小型水电站系统中我们会牵涉到许多的点（可能甚至达到400到500多个），一般的电站运行人员或者管理者希望能够对这类点的历史运行状况进行还原（即能够将历史运行的各个点状况进行还原），曲线就是非常重要的一个环节了，考虑到各种因素，由于很多控件虽然外表包装漂亮，但是功能觉得不能这么完善，所以我自己写了一个显示控件，现进行简要的介绍，希望对这个方面寻求帮助的人有帮助！-SMEs in the power industry system, the curve of the more stringent requirements, although the network control curve above all is very large, but many only for a period of the curve shows or historical point of a number of shows. For example, in a general system of small hydropower stations, we will involve many of the points (which may even reach 400 to 500 s), the average power plant operating personnel or managers hope to be able to point to the history of these operating conditions reduction (that is, to run the various historical points situation reduction) curve is a very important aspect, taking into account various factors, as many controls exterior packaging beautiful, but functional think it is not so perfect, so I wrote a show that the controls are for a brief introduction, and I
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Author: 陈一拉 |
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Description:
在三次样条中，要寻找三次多项式，以逼近每对数据点间的曲线。在样条术语中，这些数据点称之为断点。因为，两点只能决定一条直线，而在两点间的曲线可用无限多的三次多项式近似。因此，为使结果具有唯一性。在三次样条中，增加了三次多项式的约束条件。通过限定每个三次多项式的一阶和二阶导数，使其在断点处相等，就可以较好地确定所有内部三次多项式。此外，近似多项式通过这些断点的斜率和曲率是连续的。然而，第一个和最后一个三次多项式在第一个和最后一个断点以外，没有伴随多项式。因此必须通过其它方法确定其余的约束。最常用的方法，也是函数spline所采用的方法，就是采用非扭结(not-a-knot)条件。这个条件强迫第一个和第二个三次多项式的三阶导数相等。对最后一个和倒数第二个三次多项式也做同样地处理。
-the Cubic Spline, to find three polynomial, approaching every right to point the data curve. The kind of terms, these data points called breakpoints. Because only two points a straight decisions, and in between the two curves can be used an infinite number of cubic polynomial approximation. Therefore, in order for the outcome of uniqueness. The Cubic Spline, add the cubic polynomial bound by the conditions. By limiting each cubic polynomial of the first order and second-order derivative, it breakpoint in the same Department, we can better identify all internal cubic polynomial. In addition, the polynomial approximation of these breakpoints slope and curvature is continuous. However, the last one and a cubic polynomial in a breakpoint and the final one, not accompanied by polynomials. There
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Size: 3360 |
Author: 讲演 |
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Description: ；生成界面上有三个按钮，Add**Move,为左键增加点，右键拖动点；Move**Add,为右键增加点，左键拖动点；Clear为清楚界面上所有的点和曲线！ 其实这是我得一门选修课的作业！欢迎指教！- Generated interface has three buttons, Add** Move, increased points for the left, right drag the point Move** Add, for the right to increase, the left-drag point Clear to clear all interface points and curves! In fact, this is an elective course I have the operation! Welcome advice!
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Size: 27648 |
Author: 谈 |
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Description: 采用两种不同的方法绘制曲线 a） 二次B样条曲线 二次B样条曲线段的函数表达式为 （1） 其中 为控制顶点。 说明： ① 对任给定的一组控制顶点 ，每相邻三个控制顶点为一组进行曲线段绘制。即 为一组， 为一组，…， 为一组，所有曲线段连在一起即构成了整个B样条曲线。事实上，前一条曲线段的终点即是下一条曲线段的起点。 ② 在每一段曲线的绘制过程中， 取不同的值便得到曲线上不同的点。例如 时，由公式（1）可得到曲线的起点， 时可计算得到曲线的终点。为处理方便，可进行等距离选择，如10等份， 依次取0,0.1,0.2…,1.0，从而可计算得到10个曲线段上的点，把这10个点依次连接，就可得到该曲线段。 b） 四点插值细分曲线 四点插值细分曲线的表达规则为 其中 为控制顶点， 为细分次数， 为顶点下标。即每细分一次，在任意两点之间插入一顶点。为方便处理起见，可绘制成封闭曲线。 （初始）控制顶点保存在文件中。 给定两个测试文件c1.txt，c2.txt-using two different methods of drawing curve a) quadratic B-spline curves of the second B-spline curves of expression as a function of (1) for the control vertices. Note :-given right of a group of control vertices per three vertices adjacent to a group Marche line drawing. Namely, a group of a group, ... to a group, all of the curves that together constitute the entire B-spline curves. In fact, a curve before the end of the next one that is the starting point of the curve. curve in every section of the drawing process, different from the value curve will be different points. For example, by the formula (1) available curve starting point, to be compiled at the end of the curve. To facilitate handling, for equidistance options such as 10 equal installments, in order, from 0,0.1,0.2 ..., 1
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Size: 2048 |
Author: 梁小秋 |
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Description: 坐标曲线的编程实现
在实际应用中经常会要画各种统计图。坐标曲线图是其中比较常用的一种。而坐标曲线在各种统计图中应该算比较难画的，主要是很难将坐标值与图中的位置对应起来。我在做一个asp网站的项目中曾遇到过要画坐标曲线，由于没有易用免费的控件可用，只好自己来实现。因此对画坐标曲线有了一点心得。
-curve coordinates the program in practical applications often want to paint all kinds of statistics and maps. Coordinate curve which is a more commonly used. And coordinate the various statistical curves map should count more difficult paintings, it is very difficult to coordinate and map the location matching. I was doing an asp website project has encountered want to paint coordinates curve, owing to the lack of user-friendly controls available free of charge, but his is to be achieved. Therefore the paintings, there was a slight curve coordinates experience.
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Size: 1948672 |
Author: lion |
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Description: 曲线拟合程序，用最小二乘法实现，供大家参看-Curve fitting procedures, using the least square method to achieve, for all to see
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Size: 1024 |
Author: victor1302 |
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Description: When working with mathematical simulations or engineering problems, it is not unusual to handle curves that contains thousands of points. Usually, displaying all the points is not useful, a number of them will be rendered on the same pixel since the screen precision is finite. Hence, you use a lot of resource for nothing!
This article presents a fast 2D-line approximation algorithm based on the Douglas-Peucker algorithm (see [1]), well-known in the cartography community. It computes a hull, scaled by a tolerance factor, around the curve by choosing a minimum of key points. This algorithm has several advantages:
这是一个基于Douglas-Peucker算法的二维估值算法。-When working with mathematical simulations or engineering problems, it is not unusual to handle curves that contains thousands of points. Usually, displaying all the points is not useful, a number of them will be rendered on the same pixel since the screen precision is finite. Hence, you use a lot of resource for nothing! This article presents a fast 2D-line approximation algorithm based on the Douglas-Peucker algorithm (see [1]), well-known in the cartography community. It computes a hull, scaled by a tolerance factor, around the curve by choosing a minimum of key points. This algorithm has several advantages: It is a Douglas-Peucker algorithm based on two-dimensional valuation algorithm.
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Size: 429056 |
Author: 成东 |
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Description: 文档fractal(1)~fractal(5)是本人花费心血编写的分形几何中一些经典图形的详细Matlab画法（包括Koch曲线、Levy 曲线、分形树、Sierpinski三角形，并附有详细的注解），全部程序都经过认真调试，运行良好。-Document fractal (1) ~ fractal (5) is to spend my efforts to prepare the fractal geometry of some of the classic details of Matlab graphics painting (including the Koch curve, Levy curve, fractal tree, Sierpinski triangle, together with detailed comments) All procedures are carefully debugging, running good.
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Size: 40960 |
Author: 刘小 |
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Description: mfc实现的二次B样条曲线实例，点击所有的点之后，点击生成按钮，自动实现绘制二次B样条曲线。
此实例是我费了很大劲才找来的，对研究二次B样条曲线绘制会有很大帮助。-mfc realized quadratic B-spline curve example, click on all the points, click generate button, automatically rendering the second B-spline curve. This example is my great劲才charges brought, and the study of quadratic B-spline curve drawn would be of considerable help.
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Size: 1942528 |
Author: 游弋人生 |
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Description: This code implements the well-known Chan-Vese segmentation algorithm from the paper "Active Contours Without Edges."
This technique deforms an initial curve so that it separates foreground from background based on the means of the two regions. The technique is very robust to initialization and gives very nice results when there is a difference between the foreground and background means.
This code uses active contours and level sets in the implementation. It could also serve as a good framework for implementing all kinds of region-based active contour energies.
1.) Download
2.) Unzip
3.) Run >>region_seg_demo
See this site for experiments, videos, and more information on segmentation, active contours, and level sets:
[ http://www.shawnlankton.com/2007/05/active-contours/ ]
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Author: hiyisf |
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Description: 1、DES加密示例程序，包含全部加密过程，可以实现单个文件加解密功能；2、椭圆曲线密码体制加密算法实现原理源码；3、RSA算法示例源码-1, DES encryption sample procedures, contains all the encryption process, you can achieve a single file encryption and decryption functions 2, Elliptic Curve Cryptography encryption algorithm implementation principle source 3, RSA algorithm sample source
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Size: 8192 |
Author: |
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Description: 图形学源码~~~~~希望对大家有用-Graphics source ~~~~~ ~~~~~~~~~~~~~~~~~~~ useful for all of us hope
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Size: 3309568 |
Author: gawing |
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Description: this elliptic curve code which is written in c++.they are 1-7 packages are available in ECC.i will upload u a-this is elliptic curve code which is written in c++.they are 1-7 packages are available in ECC.i will upload u all
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Size: 4096 |
Author: johny |
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Description: At SRRC, a precision output current monitoring
system is installed to monitor the output performance of
all the booster/storage ring power supplies. Accurate DC
current transformers (DCCTs) are attached to the output
terminal of every power supply system. Each
transformer’ s gain/offset are carefully calibrated against
high precision current source and approximated using
high-order polynomial curve fitting. The output of each
DCCT is connected to multi-channels data logger for realtime
data collection, the collected data are calibrated
using the interpolated DCCT gain/offset value. A PC
station is set up to serve as host to store the current output
for real-time monitoring. This monitoring system provide
a precise real-time database for rapid fault diagnosing
whenever there is malfunction of the beam operation
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Size: 517120 |
Author: john hice |
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Description: 汽车发动机万有曲线绘制，等燃油消耗率曲线和等功率曲线的三维拟合图-Automobile engine all curve drawing
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Size: 1024 |
Author: hdy |
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Description: Koch曲线文法模型算法 课程设计做的,全部的源码 已经测试-Koch curve grammar model algorithm curriculum design, all of the source code has been tested
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Size: 362496 |
Author: ltt |
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Description: 动画编辑器，使用bezier曲线编辑sprite精灵的位置，缩放，旋转，颜色矩阵，使的精灵根据bezier曲线播放动画，所有的曲线点都可以保存并加载，查看myGame类将代码移植到你的项目中，就可以使用bezier曲线的点来播放你的游戏动画了-Animation editor, using bezier curve editing sprite sprite position, scale, rotation, color matrix, so the elves play the animation according to bezier curves, all curve points can be saved and loaded, see myGame class code into your project , you can use bezier curve points to play your game animation
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Size: 258048 |
Author: 胡凯 |
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Description: 这个代码主要解决数学中离散的多个点，并对这些点进行非线性拟合，是绝大多数点几乎都落在这条曲线附近-This code is mainly to solve in mathematics, a multiple discrete points, and nonlinear fitting to these points, is the vast majority of almost all fall around the curve
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Size: 1024 |
Author: 秦学珍 |
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