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lmj01 · Jul 24, 2023 · 40cf4bd · 40cf4bd
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diff --git a/articles/2023/daily.md b/articles/2023/daily.md
@@ -1,7 +1,16 @@
+## 2023-7-19
+
+后台Java使用分布式ID，**雪花算法SnowFlake**，生成的是一个非常大的整数，在前端是没法直接使用这个数的，超出Number表示的精度范围
+
 ## 2023-7-7
 
 给一个STL模型，对其数据进行连通区域的分割，分割成多个模型
 
+前端渲染可，是把数据传给GPU，要做编辑就需要缓存拓扑结构，这个与渲染的缓存数据的是有差异的，等他们的结果
+
+2023-7-21
+别人写出算法来了，起始就是我心中有些知识没有打通，会阻碍我前进的想法。
+
 ## 2023-6-16
 **布什内尔定律**，是游戏公司Atari的创始人，他提出，游戏的操作应该简单，一看就会，但是玩法应该保持挑战性，后人总结为“易于学习，难以精通”
 

diff --git a/dev-note/cmake.md b/dev-note/cmake.md
@@ -1,6 +1,11 @@
 # CMake 
 
-# VS-cmake 
+## cmd-tool
+
+cmake 
+
+
+## VS-cmake 
 
 MSBuild命令行， 每个开关都有两种形式：-switch 和 /switch
 
@@ -19,3 +24,6 @@ MSBuild.exe VTK.sln /t:Rebuild /p:Configuration=release
 MSBuild.exe INSTALL.vcxproj /p:Configuration=release
 
 ```
+
+## 参考
+- [cmake常用命令](https://zhuanlan.zhihu.com/p/315768216)
diff --git a/math/transform.html b/math/transform.html
@@ -15,6 +15,9 @@ <h1>transform in render detail</h1>
                     <li>
                         <a href="#section0">Coordinate System</a>
                         <ol>
+                            <li><a href="#section0e">Object Space</a></li>
+                            <li><a href="#section0d">World Space</a></li>
+                            <li><a href="#section0f">Camera Space</a></li>
                             <li><a href="#section0a">Screen Space</a></li>
                             <li><a href="#section0b">NDC(Normalized Device Coordinate) space</a></li>
                             <li><a href="#section0c">Raster Space</a></li>
@@ -44,17 +47,53 @@ <h1>transform in render detail</h1>
             <h4></h4>
             <div class="my-3">
                 <h4 id="section0">Coordinate System</h4>
+                <div>
+                    <h5 id="section0e">Object Space</h5>
+                    <p>
+                        This is the coordinate system in which geometric primitives are defined. 
+                        For example, spheres in pbrt are defined to be centered at the origin of their object space
+                    </p>
+                </div>
+                <div>
+                    <h5 id="section0d">World Space</h5>
+                    <p>
+                        While each primitive may have its own object space, all objects in the scene are placed in relation to a single world space. 
+                        Each primitive has an object-to-world transformation that determines where it is located in world space. 
+                        World space is the standard frame that all other spaces are defined in terms of.
+                    </p>
+                </div>
+                <div>
+                    <h5 id="section0f">Camera Space</h5>
+                    <p>
+                        A camera is placed in the scene at some world space point with a particular viewing direction and orientation. 
+                        This camera defines a new coordinate system with its origin at the camera’s location. 
+                        The \(Z\) axis of this coordinate system is mapped to the viewing direction, and the \(y\) axis is mapped to the up direction. 
+                        This is a handy space for reasoning about which objects are potentially visible to the camera. 
+                        For example, if an object’s camera space bounding box is entirely behind the \(Z=0\) plane (and the camera doesn’t have a field of view wider than 180 degrees), 
+                        the object will not be visible to the camera.
+                    </p>
+                </div>
                 <div>
                     <h5 id="section0a">Screen Space</h5>
-                    <p>Screen space is defined on the film plane. The camera projects objects in camera space onto the film plane; the parts inside the screen window are visible in the image that is generated. Depth  values in screen space range from 0 to 1, corresponding to points at the near and far clipping planes, respectively. Note that, although this is called “screen” space, it is still a 3D coordinate system, since  values are meaningful.</p>
+                    <p>
+                        Screen space is defined on the film plane. The camera projects objects in camera space onto the film plane; 
+                        the parts inside the screen window are visible in the image that is generated. 
+                        Depth  values in screen space range from 0 to 1, corresponding to points at the near and far clipping planes, respectively. 
+                        Note that, although this is called “screen” space, it is still a 3D coordinate system, since  values are meaningful.
+                    </p>
                 </div>
                 <div>
                     <h5 id="section0b">NDC(Normalized Device Coordinate) space</h5>
-                    <p>This is the coordinate system for the actual image being rendered. In  x and y, this space ranges from (0,0) to (1,1) , with (0,0) being the upper-left corner of the image. Depth values are the same as in screen space, and a linear transformation converts from screen to NDC space.</p>
+                    <p>
+                        This is the coordinate system for the actual image being rendered. In \(x\) and \(y\), this space ranges from \((0,0)\) to \((1,1)\) , 
+                        with \((0,0)\) being the upper-left corner of the image. Depth values are the same as in screen space, and a linear transformation converts from screen to NDC space.
+                    </p>
                 </div>
                 <div>
                     <h5 id="section0c">Raster Space</h5>
-                    <p>This is almost the same as NDC space, except the  and  coordinates range from  to.</p>
+                    <p>
+                        This is almost the same as NDC space, except the \(x\) and \(y\) coordinates range from \((0,0)\) to \((resolution.x,resolution.y)\).
+                    </p>
                 </div>
             </div>
             <div>