grid

OpenGL - How to calculate normals in a terrain height grid?

由 冷暖自知 提交于 2019-12-17 17:31:13
问题 My approach is to calculate two tangent vectors parallel to axis X and Y respectively. Then calculate the cross product to find the normal vector. The tangent vector is given by the line that crosses the middle point on the two nearest segments as is shown in the following picture. I was wondering whether there is a more direct calculation, or less expensive in terms of CPU cycles. 回答1: You can actually calculate it without a cross product, by using the "finite difference method" (or at least

How to plot 3D grid (cube) in Matlab

由 ☆樱花仙子☆ 提交于 2019-12-17 15:44:36
问题 Hi I would like to plot transparent cube-shaped grid with lines in it. Something like this: However, I managed only to draw a 2D grid: [X,Y] = meshgrid(-8:.5:8); Z = X+1; surf(X,Y,Z) I use Matlab R2009b. If it is impossible to plot this in matlab could you recommend me a software I could use. 回答1: If you don't mind a few for loops, something like this will work: clf figure(1) for g = 0:.2:2 for i = 0:.2:2 plot3([g g], [0 2], [i, i]) hold on end end for g = 0:.2:2 for i = 0:.2:2 plot3([0 2],

Is there a GUI design app for the Tkinter / grid geometry? [closed]

由 一曲冷凌霜 提交于 2019-12-17 15:16:17
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 9 months ago . Does anyone know of a GUI design app that lets you choose/drag/drop the widgets, and then turn that layout into Python code with the appropriate Tkinter calls & arrangement using the grid geometry manager? So far I've turned up a couple of pretty nice options that I may end up using, but they generate code

Grid Layout support in android API 10

由 穿精又带淫゛_ 提交于 2019-12-17 10:49:26
问题 I had developed an app with target API as 15. The layout includes a grid layout. Now when i am changing the Target API to 10 I am getting issues with the grid Layout and another element 'space'. Eclipse prompts me to download a supporting library for 2.3.3, Which i did... But still having the issue. 回答1: GridLayout has indeed been backported to be compatible with API level 7 and up. It's (sort of) part of the support library. After you've downloaded the support library, you'll find an Android

How do I databind a ColumnDefinition's Width or RowDefinition's Height?

由 做~自己de王妃 提交于 2019-12-17 10:48:11
问题 Under the View-Model-ViewModel pattern for WPF, I am trying to databind the Heights and Widths of various definitions for grid controls, so I can store the values the user sets them to after using a GridSplitter. However, the normal pattern doesn't seem to work for these particular properties. Note: I'm posting this as a reference question that I'm posting as Google failed me and I had to work this out myself. My own answer to follow. 回答1: Create a IValueConverter as follows: public class

Sort dataGridView columns in C# ? (Windows Form)

由 北城余情 提交于 2019-12-17 09:37:29
问题 I have a datagridview that i bind from an sql table, in that dv i have those attributes: Id, Name and Price. When i set the SortMode of the Name Columns to Automatic and i click on the header of this column i can sort this dv based on the first letter of the Name, this way i can order products based on their first letters ( Acumulator, Boat, CocaCola, Engine etc). Is there a way this thing to happen without clicking the header of the column Name. I am looking some code that will do this job

html5 vertical spacing issue with <img>

由 北城余情 提交于 2019-12-17 06:11:06
问题 I am trying to create a layout where the vertical spacing between divs is pixel perfect. So far I've ruled out almost all the big grid systems (960.gs, Blueprint), because they have no solution at all for the vertical spacings. With them, the only way to set vertical spacing between divs is to use body { line-height } attribute and manipulate the div spacing using that. I wouldn't call that a solution, as it ruins your template, depends on font-family, and doesn't let you use different

Bootstrap grid with fixed wrapper - Prevent columns from stacking up

由 喜欢而已 提交于 2019-12-17 05:07:08
问题 As the title says I'm trying to use Bootstrap 3 grid system with a fixed wrapper. But when I resize the Browser the columns stack up even if the wrapper stays the same size? BTW: I'm using version 3 so that I can move to a responsive layout after I have ported the site. (Which is huge and I'm alone, so step by step is the only option ...) <!DOCTYPE html> <html> <head> <title>Bootstrap 101 Template</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Bootstrap --

DependencyProperty getter/setter not being called

由 China☆狼群 提交于 2019-12-17 02:33:12
问题 I am trying to create a Custom control derived from a standard Grid. I added a ObservableCollection as a DependencyProperty of the Custom control. However, the get/set of it is never reached. Can I have some guidelines in creating a DependencyProperty that works correctly with and ObservableCollection? public class MyGrid : Grid { public ObservableCollection<string> Items { get { return (ObservableCollection<string>)GetValue(ItemsProperty); } set { SetValue(ItemsProperty, value); } } public

How to dynamically add RowDefinition or ColumnDefinition to a Grid with binding?

由 自古美人都是妖i 提交于 2019-12-17 02:23:16
问题 I'm trying to create a table with a variable number of rows and columns. I'm doing this with an ItemsControl which has a Grid as its ItemsPanel . And I know I can set Grid.Row and Grid.Column of each item through its ItemContainerStyle . But I don't know how to change the number of rows and columns and their sizes when I can't access the Grid by its name. Question: How can you modify RowDefinitions or ColumnDefinitions of a Grid in run-time without any code-behind using Binding? This is the
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