WebOct 21, 2016 · 后来发现code blocks的lib文件夹中缺少glu32.lib文件，在网上下载之后放到lib文件夹中就ok了，记得添加到codeblocks->settings->compilers->LinkSetting。. code blocks是在linux很好的c/c++ IDE， 但是用的时候出了个 undefined reference to问题， 在网上没有找到答案， 即便是它的官方网 ... WebBest Java code snippets using javax.media.opengl.glu. GLU.gluOrtho2D (Showing top 6 results out of 315) javax.media.opengl.glu GLU gluOrtho2D.
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Web2. Introduction. OpenGL (Open Graphics Library) is a cross-platform, hardware-accelerated, language-independent, industrial standard API for producing 3D (including 2D) graphics. Modern computers have dedicated GPU (Graphics Processing Unit) with its own memory to speed up graphics rendering. OpenGL is the software interface to graphics hardware. WebJan 19, 2010 · gluOrtho2D sets up a two-dimensional orthographic viewing region. This is equivalent to calling glOrtho with near = -1 and far = 1 . What glOrtho does is define what area (volume) of your infinite 3d space is visible on your screen. The params of glOrtho are. glOrtho (left,right,bottom,top,nearVal,farVal); so, what that means is that any part ...
Web名称. gluOrtho2D定义了一个二维图像投影矩阵. C 语言说明. 参数 left,right指明平面的左边和右边的垂直坐标. bottom,top. 指明平面底部和顶部的水平坐标。. 函数参数示意图. 描述：建立了一个可视的二维平面区域。. 这个和用glOrtho函数效果是一样的当glOrtho的near=0，far ... WebNov 25, 2016 · gluOrtho2D定义剪裁面，通过正交投影，把景物（模型）按照1:1的比例绘制到一个剪裁面上，相当于对世界坐标窗口的一个截取。glViewport定义视口，即视见窗口，是从世界坐标系窗口到屏幕坐标系 …
WebJun 27, 2010 · gluOrtho2D (-5.0,5.0,-5.0,5.0); 参数分别代表（左下角x坐标，右上角x坐标，左下角y坐标，右上角y坐标）——坐标全相对于窗口左下角－－原点），near和far默认为-1和1，此函数决定一个平行六面体，即View Volume！. View Volume越大，里面的物体显得越小！. 如，一个点的 ... WebOct 1, 2024 · glOrtho2D (2 - 8, 2 + 8, 3 - 4, 3 + 4); That is: glOrtho2D (-6, 10, -1, 7); This effectively maps the X coordinate of -6 to the left edge of the viewport. The glViewport mapping then maps that to the actual location on the screen. As the screen size changes, you must adjust the glOrtho2D coordinates to compensate for the aspect ratio, but as ...
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WebMay 12, 2024 · 我不能用gluOrtho2D()函数做什么？它是将原点固定在OpenGL窗口上的某个特定点还是其他位置？ 这是因为gluOrtho2D(1,1,1,1)将原点固定在窗口中间。. 如果它 … cycle crash birminghamWebFeb 26, 2008 · The problem is that, when changing the sign of all -500 values, your triangle gets transformed outside of your viewing frustum. Change the gluOrtho call to. gluOrtho2D (-400, 400, -400, 400); to see what is happening. N. thinks February 26, 2008, 4:07pm #3. In your example code your up-vector is (0,0,0). This is undefined. cycle crash helmetsWebJun 10, 2010 · I’m working on examples from the Red Book. I’m trying to get a triangle to appear using gluOrtho2D but nothing appears. Here’s my code. Strangely enough when I uncomment the gluPerspective line and comment out gluOrth… cycle crash lee valleyWebNov 30, 2024 · gluOrtho2D定义剪裁面，通过正交投影，把景物（模型）按照1:1的比例绘制到一个剪裁面上，相当于对世界坐标窗口的一个截取。glViewport定义视口，即视见窗口，是从世界坐标系窗口到屏幕坐标系 … cycle crash lawyer in kitchenercheap trick cheap trick at budokanWebFeb 26, 2012 · To fix it, you need to make sure that you're linking in the glu library correctly. – Stuart Golodetz. Feb 26, 2012 at 15:47. You seem to be linking in gl with -lGL but not glu. Try adding -lGLU and see if that helps. – Stuart Golodetz. Feb 26, 2012 at 15:49. possible duplicate of undefined reference to `gluOrtho2D'. cycle credit limitedWebFeb 25, 2003 · gluOrtho2D specifies the coordinates to be used with the viewport which defaults to the window size. Use glViewport to specify the window region in window coordinates to be drawn to. So, if you want create a 400 x 400 window and only want to draw to the rectangle (50, 50, 350, 350) within the window, then use glViewport (50, 50, … cycle crash velodrome