rendering | 易学教程

How can I replace my cursor with a circle instead of drawing it to canvas in p5.js?

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问题 The problem: I'm trying to create a simple drawing app using p5.js. Instead of the standard cursor image, I'd like to show a circle at my cursor location that represents the size of the drawing brush. Potential solution 1: Replace the cursor using the cursor() function native to p5. Why it doesn't work: The p5 cursor function only takes the following parameters: ARROW, CROSS, HAND, MOVE, TEXT, or WAIT, or path for image As such, there's no native way to replace the cursor using the ellipse

Grails rendering plugin does not work in Grails3.2.4?

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问题 I want to render a view to pdf and tried using the Grails rendering plugin 2.0.3 I tried the simplest gsp-file to start with: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">  <%@ page contentType="text/html;charset=UTF-8" %> <html> <head> <meta http-equiv=

HTML5 canvas arcs not rendering correctly in Google Chrome

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问题 The code below renders a broken ring nicely in IE9 and FireFox, but fails part way round the circle in Chrome. Any ideas why, or what I can do to make it render in all browsers? Cheers (Chrome version 15.0.874.121) <!DOCTYPE html> <html> <body> <canvas id="canvas1" width="201" height="201">No canvas in your browser...sorry...</canvas> <script> var canv = document.getElementById('canvas1'); var ctx = canv.getContext('2d'); var size = 201; var centerX = size / 2; var centerY = centerX; var i;

@font-face on Chrome 16 in Windows 7 looks like something ate parts of it

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问题 The problem How it should look (Chrome 16 on a Mac). (source: ddesign.si) How it looks (Chrome 16 on Windows 7) (source: ddesign.si) How it looks with bigger font-size (source: ddesign.si) Description I'm using Font Squirrel's generator for my css code. font-family: 'Conv_Gotham-Light'; src: url('fonts1/Gotham-Light.eot'); src: local('☺'), url('fonts1/Gotham-Light.woff') format('woff'), url('fonts1/Gotham-Light.ttf') format('truetype'), url('fonts1/Gotham-Light.svg') format('svg'); Tried

Why isn't Expression Blend rendering my User Control? It's only showing XAML

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问题 I'm opening valid XAML within my VS2008 solution in Expression Blend 3 and it is only showing XAML when I try to open individual XAML files. My solution/projects all build and run correctly. When I go to View -> Active Document View the Design View , Split View and XAML View options are all grayed out... which doesn't make much sense. I'm not much of a Blend user, but this has never happened before, and I'm coming up blank for how to fix it. Any ideas? 回答1: How did you create your project ?

Render isometric text in 2D

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问题 How can I render text in the form of an isometric projection? I understand the principle but I'm not sure how to actually transform a SpriteFont programmatically to do this. Example of what I mean: I'm not even sure what I should be searching for. It seems I could accomplish this by using an isometric projection matrix and a 3D mesh font, but that seems overcomplicated considering I'm working in 2D. Any ideas? 回答1: SpriteBatch.Begin takes a Matrix parameter, transforming the sprites you draw

Scaling of the point sprites (Direc3D 9)

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问题 Tell me please what values should I set for D3DRS_POINTSCALE_A, D3DRS_POINTSCALE_B, D3DRS_POINTSCALE_С to point sprites scaled just like other objects in the scene. The parameters A = 0 B = 0 and C = 1 (proposed by F. D. Luna) not suitable because the scale is not accurate enough and the distance between the particles (point sprites) can be greater than it should be. If I replace the point sprites to billboards, the scale of the particles is correct, but the rendering is much slower. Help

Swing active rendering efficiency or how to combine active rendering with gui widgets

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问题 Continuing from a previous question, I keep searching for the optimal way to combine active rendering with textfields in Java. I tried several options, using BufferStrategy, VolatileImage or overriding update() and paint() in standard AWT, but I ended up using Swing. I'm posting the current state of affairs here just in case someone happens to have new insights based on my code example, and perhaps others who are working on a similar app might benefit from my findings. The target is to

How can I calculate the rendered height of an HTML table, from within JavaScript?

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问题 When the window is resized, I need to know how big the table is, so I can dynamically fit everything else nicely in-between. The table height is solely dependant on the contents, which are loaded dynamically. How do you calculate the rendered height of the table in JavaScript? 回答1: You can use element.offsetHeight for this. var table = document.getElementById("tableId"); alert(table.offsetHeight); 来源： https://stackoverflow.com/questions/2733666/how-can-i-calculate-the-rendered-height-of-an

Texture repeating on quads OpenGL

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问题 I am writing a voxel engine and at the moment I am working on the Chunk-Rendering-System but I have a problem. It seems that the textures were repeated on the quads. There is this green line at the bottom of the grass blocks and I don't know why. This is the OpenGL-Render-Code: Texture texture = TextureManager.getTexture(block.getTextureNameForSide(Direction.UP)); texture.bind(); GL11.glBegin(GL11.GL_QUADS); GL11.glTexCoord2d(0, 0); GL11.glVertex3f(0, 1, 0); GL11.glTexCoord2d(1, 0); GL11