position

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Are point sprites the best choice to build a particle system? Are point sprites present in the newer versions of OpenGL and drivers of the latest graphics cards? Or should I do it using vbo and glsl? 回答1: Point sprites are indeed well suited for particle systems. But they don't have anything to do with VBOs and GLSL, meaning they are a completely orthogonal feature. No matter if you use point sprites or not, you always have to use VBOs for uploading the geometry, be they just points, pre-made sprites or whatever, and you always have to put

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In a big project, few buttons were misalligned in IE. I found a fix by coincidence, by setting position: absolute without any parameters. It made me wonder, what are the default values of such position? I understand how absolute positioning works and what containing element means. But I don't know where the default values come from. They are definitely not top:0; left:0 which I originally expected. */ /*--> */ Absoulute pos Paragraph Here is a simple page, and this is how final positioning of the h1 element looks like: 回答1: As you suspect,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a ViewPager with two page how can I remove one of Fragment from ViewPager and add another Fragment to ViewPager ? I wrote below code but doesn't work : public class MainActivity extends AppCompatActivity implements WorkTableFragment.listenerLogin { @BindView(R.id.tabsMainActivity) TabLayout tabsMainActivity; @BindView(R.id.viewpagerMainActivity) ViewPager viewPagerMainActivity; private ViewPagerAdapter adapter; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: Absolutely positioning with flexbox in Safari 1 answer I am looking for an explanation why the following code works differently in Chrome and Safari Chrome centers the inner item both vertically and horizontally, whereas Safari doesn't. .flex-container { display: flex; flex-direction: column; align-items: center; justify-content: center; width: 100%; height: 300px; background: #e2e2f2; } .flex-overlapping-item { position: absolute; margin: auto; } <div class='container'> <div class='flex-container'>

i have a bunch of images that are positioned absolutely, i want to be able to click a button and have them all animate to where they would normally be on the page if they had the position: relative. so is it even possible to animate from position:absolute to position:relative in jquery? this is what i have: $(".change_layout").click(function(){ $(".book_img").animate({position:'relative', top:'0px', left:'0px'}, 1000) }) No, you cannot animate it directly but you can find out the end point and animate the position there. Something like this might work when animation to the static position: $(

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am currently in the process of learning both WebGL and Javascript. An assignment is requiring me to create multiple shapes using WebGL and for them to all be different colours, however, I am unable to figure out how to set it so that each shape has it's own colour. // HelloTriangle.js (c) 2012 matsuda // Vertex shader program var VSHADER_SOURCE = 'attribute vec4 a_Position;\n' + 'void main() {\n' + ' gl_Position = a_Position;\n' + '}\n'; // Fragment shader program var FSHADER_SOURCE = 'precision mediump float;\n' + 'uniform vec4 u

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have an application with a QGraphicsView window in the middle of the screen. I want to be able to zoom in and out using a mouse wheel scroll. Currently I have re-implemented QGraphicsView and overriden the mouse scroll function so that it doesn't scroll the image (like it does by default). void MyQGraphicsView::wheelEvent(QWheelEvent *event) { if(event->delta() > 0) { emit mouseWheelZoom(true); } else { emit mouseWheelZoom(false); } } so when I scroll, I'm emitting a signal true if mouse wheel forward false if mouse wheel back. I have then

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I wrote a script that allows a user to control the sprite of an eagle to fly around to learn pygame. It seemed fine until i implemented a rotation function that makes the sprite rotate according to the direction it is flying along. The sprite becomes really fuzzy after moving a short while and an error soon pops up saying out of memory (at this line: eagle_img = pygame.transform.rotate(eagle_img,new_angle-angle) ) My code: # eagle movement script import pygame, math, sys from pygame.locals import * pygame.init() clock = pygame.time.Clock() #

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: <!DOCTYPE html> <html> <head> <script> position=0; var tLight = ["red light.gif","red_and_amber_light.gif","green light.gif","amber light.gif"] function changeImage() { if (position==0) { document.getElementById('myImage').innerHTML=tLight[1] position=1; } else if (position==1) { document.getElementById('myImage').innerHTML=tLight[2] position=2; } else if (position==2) { document.getElementById('myImage').innerHTML=tLight[3] position=3; } else if (position==3) { document.getElementById('myImage').innerHTML=tLight[4] position=4; } } </script>

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Hi guys I have a question: I created a listview, with search-bar etc . So when I click on an item (through switch-case) the selected new activity opens and there are no problems. you can see the code here: Filtered list item opens the original list items' activity The problems start when I filter the listview, with the search-bar, and instead of opening the selected activity (let us say activity 10), it throws me back to activity 1 and so forth. What I have figured out so far is that most probably the CustomAdapter somehow mixes my