3d

实现立方体旋转

由 霸气de小男生 提交于 2020-01-21 07:55:14
HTML部分： <body class="body"> <div class="rect-wrap"> <!-- // 舞台元素，设置 perspective ，让其子元素获得透视效果。 --> <div class="container"> <!-- // 容器，设置 transform-style: preserve-3d ，让其子元素在 3D 空间呈现 --> <div class="top slide">1</div> <!-- // 立方体的六个面 --> <div class="bottom slide">2</div> <div class="left slide">3</div> <div class="right slide">4</div> <div class="front slide">5</div> <div class="back slide">6</div> </div> </div> </body> CSS: <style> .rect-wrap { position: relative; perspective: 2000px; } .container { width: 400px; height: 400px; transform-style: preserve-3d; transform-origin: 50% 50% 100px; /* /

实现立方体旋转

由 浪尽此生 提交于 2020-01-21 07:35:46
HTML部分： <body class="body"> <div class="rect-wrap"> <!-- //舞台元素，设置perspective，让其子元素获得透视效果。 --> <div class="container"> <!-- //容器，设置transform-style: preserve-3d，让其子元素在3D空间呈现 --> <div class="top slide">1</div> <!-- //立方体的六个面 --> <div class="bottom slide">2</div> <div class="left slide">3</div> <div class="right slide">4</div> <div class="front slide">5</div> <div class="back slide">6</div> </div> </div> </body> CSS: <style> .rect-wrap { position: relative; perspective: 2000px; } .container { width: 400px; height: 400px; transform-style: preserve-3d; transform-origin: 50% 50% 100px; /* /

Fit a 3D line to 3D point data in Java?

由 久未见 提交于 2020-01-21 06:53:54
问题 I've spent a decent amount of time trying to hunt down a simple way of doing this - ideally, a magical library exists out there somewhere that will take my set of 3D data points and return 2 points on the best fit line using either orthogonal regression or least squares and also return the error of the fitted line. Does such a thing exist, and if so, where? 回答1: This is easy enough to do, but to write it yourself you will need an eigenvalue solver or a singular value decomposition. Create the

3D sphere tag cloud [closed]

由 不想你离开。 提交于 2020-01-21 05:11:25
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 4 years ago . Does anyone know how to achieve a 3D sphere tag cloud, like on this site: http://krypted.com/ Is there a Javascript library that can easily do this, or was it most likely written by hand? 回答1: That is done in Flash using the WP-Cumulus plugin. While there are ways to accomplish it in javascript I haven't seen

HTML5+CSS3

由 杀马特。学长 韩版系。学妹 提交于 2020-01-21 04:53:20
cHTML5 第三天 一、 认识 3D 转换 3D 的特点 近大远小 物体和面遮挡不可见 三维坐标系 x 轴：水平向右 – 注意：x 轴右边是正值，左边是负值 y 轴：垂直向下 – 注意：y 轴下面是正值，上面是负值 z 轴：垂直屏幕 – 注意：往外边的是正值，往里面的是负值 ​ 二、 3D 转换 3D 转换知识要点 3D 位移： translate3d(x, y, z) 3D 旋转： rotate3d(x, y, z) 透视： perspctive 3D 呈现 transfrom-style 3D 移动 translate3d 3D 移动就是在 2D 移动的基础上多加了一个可以移动的方向，就是 z 轴方向 transform: translateX(100px) ：仅仅是在 x 轴上移动 transform: translateY(100px) ：仅仅是在 y 轴上移动 transform: translateZ(100px) ：仅仅是在 z 轴上移动 transform: translate3d(x, y, z) ：其中x、y、z 分别指要移动的轴的方向的距离 注意：x, y, z 对应的值不能省略，不需要填写用 0 进行填充 语法 transform : translate3d ( x, y, z ) 代码演示 transform : translate3d ( 100px,

How to plot (x,y,z) points showing their density

由 女生的网名这么多〃 提交于 2020-01-21 04:33:27
问题 My data file is a set of (x,y,z) points located around the axis origin. They represent points where a kind of measure has failed. These points are in this link. Gnuplot can plot them, set encoding iso_8859_1 set term postscript eps enhanced color size 4.7in,4in set xlabel "X" set ylabel "Y" set zlabel "Z" set output "test_gp.eps" set style line 1 lc rgb '#0060ad' pt 7 ps 0.5 lt 1 lw 0.5 # --- blue set style fill transparent solid 0.15 noborder splot "data.dat" u 1:2:3 w p ls 1 title "P_{error

Using CreateOrthographicOffCenter in XNA

由 生来就可爱ヽ(ⅴ＜●) 提交于 2020-01-21 02:30:17
问题 I'm trying to figure out how to draw graphics in XNA, and someone else suggested this. But before I attempt to use this... If I create and use this camera, and set LEFT,TOP to 0 and WIDTH=256 and HEIGHT=240, anything I render to the screen will use these coordinates? So a box with a width and height of 1, if set to 0,0 will take up space from 0,0 to 1,1? 回答1: The function you are referring to is: Matrix.CreateOrthographicOffCenter(left, right, bottom, top, zNearPlane, zFarPlane) . This

3D-HEVC中的编码关键技术

由 旧时模样 提交于 2020-01-21 01:54:39
图(1) 3D编码框架图 3D-HEVC采用多视角加深度图( MVD )的格式来表示编码的3D视频。其中包括独立视角的编码( unmodified )上图中的蓝色部分，和修改的HEVC编码器用于减少冗余度。 1. 视差补偿预测(DCP) 图(2) DCP as an alternative to motion-compensated prediction MCP是参考同一视角下的以编码图像的帧间编码，而DCP是参考不同的视角下视角间的编码如上图中所示，其中的R代表搜索的参考序列及顺序。 2. 层间运动参数预测 图(3)层间运动参数预测 由于MVD的不同视角是从不同的方向得到3D画面的，因此不同的视角间的非常相似，相关性很大。所以不同视角的同一画面的运动参数及其相似，即可以从编码的块中得到当前块的运动参数。如上图所示。 3. 层间残差预测 图(4) 层间残差预测 如上图所示，Dc为当前视角下的当前块，Bc为参考视角下的同时刻的的参考块。Dr为同一视角下的帧间预测，Vd表示运动向量(MCP)。由于Bc与Dc是不同视角下的同一时刻下的预测，所以两个块有相同的运动信息。因此，Bc在参考视角中的时间预测Br可以通过Bc加上Vd运动信息得到；Bc的残差加上Vd运动信息，再乘以加权值就可以得到当前的的残差。 4. 深度模型模式(DMM) 由于深度图代表的是物体离镜头的远近

Conversion euler to matrix and matrix to euler

由 断了今生、忘了曾经 提交于 2020-01-21 01:47:29
问题 I'm trying to convert a 3D rotation described in term of euler angles into a matrix and then back, using .NET/C#. My conventions are: left handed system (x right, y top, z forward) order of rotations: heading around y, pitch around x, bank around z rotations are positive using the left hand rule (thumb pointing to +infinity) My trial is: Euler to matrix (I've removed the x,y,z translation part for simplification) Matrix3D matrix = new Matrix3D() { M11 = cosH * cosB - sinH * sinP * sinB, M12 =

three.js: how to control rendering order

由 自闭症网瘾萝莉.ら 提交于 2020-01-20 03:52:25
问题 Am using three.js How can I control the rendering order? Let's say I have three plane geometries, and want to render them in a specific order regardless of their spatial position. thanks 回答1: You can set renderer.sortObjects = false; and the objects will be rendered in the order they were added to the scene. Alternatively, you can leave sortObjects as true , the default, and specify for each object a value for object.renderOrder . For more detail, see Transparent objects in Threejs Another
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