mesh slicing

database through Changelog:Mongos> Db.changelog.count ({What: "Split"}) is 2mongos> Db.changelog.count ({What: "Movechunk.commit"}). Count () 2014-11-08t20:12:09.618+0800 Typeerror:object 1 have no method ' count ' mongos> db.changelog.find ({what: " Movechunk.commit "}). Count () 1mongos> Db.changelog.find ({What:" Movechunk.commit "}) {" _id ":" WIN--20141018KO-2014-11-08T11:01:40-545DF8141603DFC967D0FDCD "," Server ":" Win--20141018ko "," clientAddr ":" 127.0.0.1:50644 "," Time ": Isodate ("

In the development process we often use the three mesh operator, the following two cases can you say that more reasonable?Usage A:...Map...Integer count = Result.get (key);Count = = null? Result.put (key,1): Result.put (key,count++);...Usage B:...Map...Integer count = Result.get (key);Result.put (Key,count==null 1:count++);...At first glance, usage B is more refined, and usage a is clearer. In fact, you are wrong, usage A is wrong, do not believe you

This article mainly introduces how to implement the Focus Image switching effect of the js imitation potato mesh belt thumbnail, and involves the javascript technique for operating Image effects, which has some reference value, for more information about how to switch the focus image of a js imitation potato mesh belt thumbnail, see the example below. Share it with you for your reference. The specific imple

Today, we found that the mesh of Max's teapot has two points with the same index on one side. Ah, hahaha, mesh really has all the structures. If you are interested, try it.View code for (int i=0; i { Object * selectObject = ip->GetSelNode(i)->GetObjectRef(); TriObject *tri = (TriObject *)selectObject->ConvertToType(ip->GetTime(),Class_ID(TRIOBJ_CLASS_ID, 0));

The organization method of U3D mesh. The default mesh construction method of U3D is triangle, that is, the index points to three points, so these three points will be connected to a triangle, Before that, you must apply for many vertices, UV, and normal, and then set points and indexes. Note that the U3D area must be drawn counterclockwise to display the surface. Otherwise, the area is not displayed, the fo

Recently in dealing with a requirement, the requirements are described as follows: A simple process for a field of data queried in a database. Handled by: If the value of the field (the value range 0~4, possibly null) equals 0, then the default process is 1.The test code is as follows:1 Public classTestnull {2 3 PrivateInteger Starlevel;4 5 PublicInteger Getstarlevel () {6 returnStarlevel;7 }8 9 Public voidsetstarlevel (Integer starlevel) {Ten This. Starlevel

Written at the beginning:More and more annoying those without brain forwarding themselves do not do the verification of Bo main forum landlord, the Internet finally found some information, the result code is wrong, and some really because the version of the problem is too old incompatible, but some obviously have problems, forwarding before you try to know is definitely not available. Results... Hey... I really don't want to say anything.This time in the small map to draw a line circle, using th

In most programming languages, there are three-mesh operators: In this form, let's take a look at the three-mesh operator instance. $safe = $input? $input: ' Default '; This code is a bit redundant in some places, so the median value is already optional. Now just use the ifsetor syntax, just like the following code. $safe = $input?: ' Default '; One of the common operations in processing input data is t

Three-mesh operators in JavaThree-mesh operators in Java:Some select branching structures, which can be replaced with simple conditional operators. Such as:if (aB) min=A; Else min=B; // You can use the following conditional operators to handle min= (awhere "(aThe conditional operator consists of two symbols "?" and ":", requires 3 operand, so also called it the trinocular operator.Three-

Q: N row m column of the grid cake with some cherries, each time you can use a knife to cut along the grid line into two pieces, asked to make the final cake on each piece happens to have a cherry, cut to the minimum length. Straight forward to think how to cut feel bad, but you can, in turn, like the interval splicing the same consideration when a mesh cake stitching up, stitching the length is to cut the length. Dp[a][b][c][d] represents the shortes

Objective:Drawing a circle, it is expected to draw the geometry associated with it, in order to more flexibly grasp the mechanism and method of mesh dynamic creation model.First, Analysis:First, draw the ring in conjunction with the process of drawing the circle:The circle is composed of segments a isosceles triangle (in the previous article, the circle is divided into segments parts, that is, segments isosceles triangle), the ring is a segments isosc

The previous article briefly introduced the conceptual data model, the logical data model, the physical data Model basic concept, the characteristic as well as the three corresponding database development stage. Now for the three kinds of data models used in the logical data Model---Hierarchical data model, mesh data model and relational data model to do a trust introduction and comparative analysis.　　One, hierarchical data model　　definition: A hierar

1. for the direction of the poly normal, I just found the above, and used the algorithm to mark the direction of the point. I thought about it for a few hours last night, not very good. If you want to project any flattened poly object as a normal, I didn't think of it because the points on the surface of ploy are undefined. 2. mesh is easy to use. First (1) Visibility of the normal. (2) The visibility rate of each layer is very high. (3) versatil

. Effect 4: labeling in a small closed contour circle There are many theories for creating contour lines. However, we usually use a triangular mesh section + Contour Tracking. There are many papers on the Internet for reference: Gridded network partitioning algorithm Knowledge about node partitioning Automatic Generation of triangular mesh contour lines and program implementation Here is a dra

Absrtact: Here everyone is familiar with the two symbols, all know that the trinocular operator is a shortcut mechanism for If/else control statements (Boolean expressions)? Statement: Statements such as if/else, like the execution, but three mesh operation also has a hidden data type conversion function, + = and-= is also not only add or subtract after the assignment, let us use a few examples to illustrate their hidden function.I. Three-

Openmesh provides the Delete_vertex () function to remove vertices from the grid, and all edges connected to the vertex are deleted at the same time as the vertices are deleted.The vertex deletion function in the Openmesh official document is declared as follows: void Openmesh::P olyconnectivity::d Elete_vertex (Vertexhandle _VH, bool _delete_isolated_vertices = TRUE) Mark Vertex and all incident edges and faces deleted. Items marked deleted is removed by Garbagecollection ().

' Prompt when accessing a DataTable: Deleted rows cannot be accessedFor each Dr in mesh Part 1. DataTable.RowsIf IsNull (dr["ID"]) Thenshowinformation ("ID cannot be empty")EndEnd If Nextas shown in this circular judgment, if the data in the mesh Part 1 has been deleted, that is called: mesh parts. Deletefocusedrow (), then an error is raised: The deleted cannot

expression should return a memory space ! That's the first address of memory! What is the first address of memory? It's a pointer.AI can write this: (A int main (){int a=10;int b=20;The trinocular operator is an expression and the expression cannot be left-valued* (aprintf ("a=%d,b=%d", A, b);return 0;}Operation Result:A=30,b=20Press any key to continueSo, C + + compiler is to help our programmers to complete the work of fetching addresses.Conclusion :1, the C language returns the value of the

Requirement Description: Picture element background picture loading: If the URL from the background is empty, the default picture URL is displayed.That's what I do:1 Divclass= "Swiper-container">2 Divclass= "Swiper-wrapper">3 Divclass= "Swiper-slide"th:unless= "${#lists. IsEmpty (hotList)}"Th:each= "element: ${hotList}"Th:style= "${#strings. Prepend ((Element.imgurl! = null)? ( Accesspath+element.imgurl):(accesspath+ ' img_default_2.png '), ' Backg

This article mainly introduces the method of implementing three mesh in Python, this article uses the and/or operator to simulate the three mesh operation, the need friend can refer to the following Three-mesh operator in C language The code is as follows: Expression expr1:expr2; Expression is true to take the value of an expression expr1, otherwise the value