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。. 如果它不能在某一点修复原点,那么我有没有办法修复原点,因为我读到没有所谓的"OpenGL窗口坐标“这样的东西? WebFeb 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, …
不了解gluOrtho2D函数 - 问答 - 腾讯云开发者社区-腾讯云
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 ... quotes for missing family
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WebDescription. glPointSize specifies the rasterized diameter of points. If point size mode is disabled (see glEnable with parameter GL_PROGRAM_POINT_SIZE), this value will be used t WebgluOrtho2DNAMEgluOrtho2D -- define a 2-D orthographic projection matrixC SPECIFICATIONvoid gluOrtho2D(GLdouble left,GLdouble right,GLdouble … 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. quotes for missing a friend