canvas

LWJGL Display mounted on Canvas fails to generate Mouse Events

由 社会主义新天地 提交于 2020-01-25 23:56:13
问题 My ultimate goal is to be able to make use of additional mouse buttons in Java. Currently, LWJGL's JInput doesn't seem capable of detecting more than three buttons. To make use of Java's System.setProperty("sun.awt.enableExtraMouseButtons", "true"), I've tried mounting the Display onto an AWT Canvas, within a JFrame. Unfortunately, this does not appear to work, and I am unsure why. [I should note that I've been away from Java for a some time] import java.awt.Canvas; import java.awt.event

How multiple canvas elements affect performance?

由 狂风中的少年 提交于 2020-01-25 23:43:49
问题 I'm trying to make a simple game (view from above) on canvas. Please tell me, which is faster: 1) Draw everything on one <canvas> and calculate the areas that need to be redrawn. 2) Draw certain parts of the scene on different <canvas> elements and update each only if necessary. In the it variant, probably, I can also use a partial redraw. For example, I could draw a map on one element, enemies on the second, and a cursor and etc on the third. When moving enemies, I could only redraw the

Android PathMeasure的使用

由 ぐ巨炮叔叔 提交于 2020-01-25 20:55:07
文章目录 PathMeasure基本概念 PathMeasure常用API PathMeasure案例实现 forceClosed nextContour getSegment 示例：箭头围绕圆运动 示例：圆圈加载 示例：笑脸加载 示例：小船滑动 参考： https://blog.csdn.net/weixin_33935505/article/details/88000720 https://blog.csdn.net/coderinchina/article/details/53665632 PathMeasure基本概念 路径测量，一个用来测量Path的工具类 PathMeasure常用API 常用API如Path长度测量，Path跳转，Path片段获取等。 PathMeasure案例实现 先画坐标轴 private int mViewWidth ; private int mViewHeight ; private Paint mDeafultPaint ; private Paint mPaint ; public MyView ( Context context ) { super ( context ) ; init ( ) ; } private void init ( ) { mDeafultPaint = new Paint ( ) ;

How to save a canvas image with a specific filename

由 家住魔仙堡 提交于 2020-01-25 20:16:20
问题 I have a web page that can show a live stream and then be able to snap shot the live stream. I need to have a button that can save the image in the canvas with a specific file name of my own (it can be the date for today). Badly need it. Thanks to those who will respond! :) Here's the code: <!DOCTYPE html> <html> <head> <title>Video Live Stream</title> <link rel="stylesheet" type="text/css" href="demo'.css"/> </head> <body> <center> <style> <p> video { border: 20px solid #ccc; display: block;

How to save a canvas image with a specific filename

由 纵然是瞬间 提交于 2020-01-25 20:15:53
问题 I have a web page that can show a live stream and then be able to snap shot the live stream. I need to have a button that can save the image in the canvas with a specific file name of my own (it can be the date for today). Badly need it. Thanks to those who will respond! :) Here's the code: <!DOCTYPE html> <html> <head> <title>Video Live Stream</title> <link rel="stylesheet" type="text/css" href="demo'.css"/> </head> <body> <center> <style> <p> video { border: 20px solid #ccc; display: block;

THREE.JS MakeTextSprite properties

由 大兔子大兔子 提交于 2020-01-25 17:18:49
问题 I use the function "MakeTextSprite" in https://stemkoski.github.io/Three.js/Sprite-Text-Labels.html function makeTextSprite(message, parameters) { if (parameters === undefined) parameters = {}; var fontface = parameters.hasOwnProperty("fontface") ? parameters["fontface"] : "Helvetica"; var fontsize = parameters.hasOwnProperty("fontsize") ? parameters["fontsize"] : 18; var borderThickness = parameters.hasOwnProperty("borderThickness") ? parameters["borderThickness"] : 0; var borderColor =

How to convert a div inside an iframe into svg code? [duplicate]

由 别说谁变了你拦得住时间么 提交于 2020-01-25 10:14:31
问题 This question already has answers here : How to take screenshot of a div with JavaScript? (11 answers) Closed 16 days ago . I have a simple html page with a datatables table. This page itself is being used as an iframe for another page. Now in that page I am able to get the table html code properly, but I cannot figure out a way to convert it into svg code. I found multiple options all of which I tried, but failed, because I just want the SVG code of my div. I need like a screenshot of the

How to convert a div inside an iframe into svg code? [duplicate]

由 不问归期 提交于 2020-01-25 10:14:15
问题 This question already has answers here : How to take screenshot of a div with JavaScript? (11 answers) Closed 16 days ago . I have a simple html page with a datatables table. This page itself is being used as an iframe for another page. Now in that page I am able to get the table html code properly, but I cannot figure out a way to convert it into svg code. I found multiple options all of which I tried, but failed, because I just want the SVG code of my div. I need like a screenshot of the

Custom Google Map won't show in div element

由 北战南征 提交于 2020-01-25 09:49:26
问题 I'm trying to customize google map but I have a small problem. Here is the css code: #map-canvas { width: 100%; height: 500px; } and the js code: <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script> <script> function initialize() { var myLatlng = new google.maps.LatLng(-25.363882,131.044922); var mapOptions = { zoom: 4, center: myLatlng } var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions); var marker = new google.maps.Marker({

Draw bing map pushpin using custom shape & click event should only work for shaped pushpin

由 耗尽温柔 提交于 2020-01-25 09:40:28
问题 Feature Overview I am using Bing Map V8. As per the requirement, we need to create custom pushpin (ref. Custom Pushpin) which contains three different html elements. E.g. Canvas, Image & Label. That pushpin will be looks like below, In this pushpin, all three elements are being set dynamically on run time. Like, Canvas radius, Pushpin Name font style (color, size), etc.. properties are different per pushpin. This feature we achieved by merging these three elements into the canvas and then by
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