sketchup polygon

This tutorial introduces how to use the fireworks polygon slice tool to make navigation bar overlapping effect, the method is very simple also very practical, mainly hope that you through this tutorial, can skillfully grasp the use of polygon tools, forward, hope to help everyone! Usually when you slice out the output of the page, generally use the common slicing tool for output. But if you encounter a lot

To give you illustrator software users to detailed analysis to share the creation of 3D polygon Paper Art ice cream Tutorial. Tutorial Sharing: The points we will be learning in this tutorial are: 1 Application of dot Brush tool 2) Polygon Construction 3) The application of texture 4) Gradient Fill Color One, hand-painted modeling The

This paper uses the Ray method to determine whether the point is within the Polygon C language program. Years ago, I realized such an algorithm myself. But over time, I decided to rewrite the code. Referring to Zhou Peide's "computational Geometry", combined with my practice and experience, I believe that this is the optimal code you have encountered so far in the implementation of this algorithm. This is a C-language small algorithm implementation p

This tutorial is intended to introduce PS simple production pretty popular low polygon background method to PHP chinnet friends. the polygon background produced in this tutorial is very beautiful and difficult, it is very suitable for beginners to learn. we recommend you to the PHP Chinese web. if you like it, you can come and create it. in this tutorial, I would like to introduce PS to my friends in the PH

Meaning of the title:Given an n just n vertex. This is achieved by the N-point coordinate polygon.Http://acm.hdu.edu.cn/showproblem.php?pid=1115Topic Analysis:/*** Source: http://blog.csdn.net/ysc504/article/details/8812339*① quality centered on vertices* N Vertex coordinates are (xi,yi). The mass is MI, then the center of gravity* X =∑ (XIXMI)/∑mi* Y =∑ (YIXMI)/∑mi* in particular. If the quality of each point is the same. The* X =∑xi/n* Y =∑yi/n*② Uniform mass Distribution* in particular. Unifo

2618: [Cqoi2006] Convex polygon Description counter-clockwise gives the vertex coordinates of n convex polygons, and asks them to cross the area. For example, when n=2, two convex polygons such as: The area of the intersecting portion is 5.233.Input The first line has an integer n, which represents the number of convex polygons, and the following describes each polygon in turn. The first line of th

The area of a triangle can be obtained using the cross product of the vector; For a triangle, the area is equal to [(x2-X1) * (Y3-Y1)-(Y2-Y1) * (X3-X1)]/2.0. However, the area is oriented. For a polygon, we can select any point (usually 0, 0) to connect to the fixed point of the polygon, For ordered vertices, we calculate the cross product of a triangle composed of the origin point and a pair of adjacent

Decomposing polygons with GPC(Owed by: Spring Night rain Http://blog.csdn.net/chunyexiyu reprint please indicate the source)Gpc:generic Polygon ClipperGPC supports decomposition polygon, polygon differential set, intersection, XOR, and setGpc_diff,/* difference */Gpc_int,/* intersection */Gpc_xor,/* Exclusive or */Gpc_union/* UNION */Use is more efficient, but be

Method One: Green formulaThe green formula reveals the relationship between the double integral of the planar area and the line integral on the closed curve .where L + indicates a positive boundary curve along a closed area.And by the derivation process of the green formula we know:If L=-y here, the (1) formula is guaranteed to be constant in the area and equal to the area of the closed area.Similarly, m=x can also guarantee (2) that the formula is constant in the area and equal to the area of

In the process of drawing with OpenGL, since OpenGL does not support direct drawing of concave polygon, we usually need to first convert the concave polygon into a group of triangles with a triangular Polygon Algorithm 1) use a one-way cyclic linked list to save the polygon vertices and calculate the convex and conca

Easy to view and reprint 1. How to determine whether a polygon is clockwise or counterclockwiseFor a convex polygon, you only need to calculate a certain point.Cross Product = (Xi-XI-1), (Yi-Yi-1) x (XI + 1-xi), (yi + 1-yi ))= (Xi-XI-1) * (yi + 1-yi)-(Yi-Yi-1) * (XI + 1-xi) If the value of the preceding formula is positive, it is counter-clockwise. If it is negative, it is clockwise. For a general simple

Original works can be reprinted. During reprinting, you must mark the original source, author information, and this statement in hyperlink form. Otherwise, legal liability will be held. Http://yarin.blog.51cto.com/1130898/380265 Lesson 2: Polygon Your first polygon: Based on the first tutorial, we added a triangle and a quadrilateral. You may think this is simple, but you have taken a big step to know tha

To the users of the illustrator software to detailed analysis to share a polygon poster Drawing example Tutorial. Tutorial Sharing: The first step in design Image Source:gilberto Taccari Just take over the design project, you stare at the blank canvas, feel no way, you scratch scratching head, ask yourself "How to start ah", some designers will be in the brain for a quick idea, some designers will first pic

Topic Meaning:An n-shaped N-vertex is given to find the coordinate of the center of gravity of the N-side shape.http://acm.hdu.edu.cn/showproblem.php?pid=1115Topic Analysis:/*** Source: http://blog.csdn.net/ysc504/article/details/8812339*① quality centered on vertices* N Vertex coordinates (xi,yi), MI in mass, center of gravity* X =∑ (XIXMI)/∑mi* Y =∑ (YIXMI)/∑mi* Specifically, if the quality of each point is the same, then* X =∑xi/n* Y =∑yi/n*② Uniform mass Distribution* Specially, the quality

Low polygon (low-poly) font design is the latest and most popular design trend. The low polygon font design is based primarily on a 3D mesh with a small number of polygons, combined with some rendering techniques and lighting effects, making these grids look like paper crafts or origami. Low-polygon is usually required to use 3D software, but this tutorial will

A friend is doing map-related programs, the requirements of the program is: There are a lot of points on the map, stored in the database, input is a polygon, output is contained in this polygon point. A friend discovers that there is a function in Oracle that solves this problem: We then learned about the Oracle spatial API to implement the query functionality. --Create TABLE t2 (ID number, location sdo_geo

The problem of judging convex polygon by vector fork multiplication I'm doing a problem, the title is to give the coordinates of several points in a counter-clockwise order, to find out whether the polygon is concave or convex. I saw a formula on the Internet: Three points on the plane: P1 (x1,y1), p2 (x2,y2), P3 (X3,Y3) S (p1,p2,p3) = (x1-x3) * (y2-y3)-(X2-X3) * (Y1-Y3) If s>0 indicates that these

Array Polygon Questions#include From: http://www.cnblogs.com/graphics/archive/2010/08/24/1761620.html#Array Polygon Questions

As the flattening became popular, a low, abstract, low-level polygon background, which appeared in the background of a Web page or poster design, came into vogue. The shape of its class geometry, there is a concise sense of the future, as high as the big labels are popular. Today we are going to learn how to use AI software to make a low polygon background map. The creation of abstract graphics for beginne