第二章 图形系统综述
DESCRIPTION
第二章 图形系统综述. 交互式 图形系统的组成 视频显示设备 随机扫描系统 光栅扫描系统 输入设备 硬拷贝设备 图形软件. 交互式 图形系统的组成. 硬件系统 主计算机 图形显示器 、绘图仪、打印机 键盘、鼠标仪、图形输入板 磁盘、磁带、光盘机 软件系统 操作系统 DOS MS-Windows UNIX Linux 高级语言 Visual C++ VB PASCAL ... 图形软件 GKS PHIGS OPEN GL ... 应用软件 CorelDraw, AutoCAD. 图形系统. - PowerPoint PPT PresentationTRANSCRIPT
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DOS MS-Windows UNIX Linux Visual C++ VB PASCAL ... GKS PHIGS OPEN GL ... CorelDraw, AutoCAD ...
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CRT (Cathod-Ray Tube) To 8-9: Vector / Random Display to 15 --- Storage Tube Display To 6---Raster Display to 17 To 17 to 21 To 26
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CRT
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CRT
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CRTXY 1/10 301/30( resolution) Pixel 2.5
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CRT RGB
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Raster Scan DisplayCPU---- Frame Buffer RGB 1 bit 8bit 256 RGB Color Table R G B 1 0 0 0 1 0 0 0 1
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1024768Frame Buffer(x,y)(x,y)1 0 1 0 1 1 0 1
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1024768 color lookup table)24 bitR G B28025520 0 0 0 1 0 1 0 0(x,y)(x,y)color lookup table
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display controller
I/OCPUmemoryFrame Buf.Video controllerBUS
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xyxy(x,y)
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Displays Processor CPU : Scan conversion
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Random scan displays
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Random-scanCRT,.CPU----DPU--SCREEN
I/O
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E&S Tornado1920 x 1200 (2424Z- 2048 x 7683D 5M/s3D 5M/s 100M/s
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( Graphics Server) Client
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;;;
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GKS 2D,3D)PHIGSOpenGL
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GKS, PHIGS, OpenGLCGICGMIGES,STEPIInitial Graphics Exchange SystemStandard for the Exchange ofProduct model Data
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GKS-Graphics Kernal System/ MCModeling Coordinates WC(World Coordinates)Viewing Coordinates)NDC(Normalized Device Coordinate)DC(Device Coordinate)
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WC NDC NDC DC Polyline Polymarker Text Fill Area Cell Array Generalized Drawing Primitive Segment
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Locater Stroke Valuator Choice Pick String
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PHIGS(PHIGS +)Programmers Hierarchical Interactive Graphics System CGICGM Computer Graphics Metafile
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OpenGL (gl) .
OpenGL Utility glu 2
OpenGL Utility Toolkit glut
OSMS windows WGL
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OpenGL: 3 Bezier Emitted LightAmbient LightDiffuse LightSpecular Light Texture Mapping BlendingAntialiasingfog Double Buffering
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OpenGL MicrosoftSGIIBMDECSUNHP
OpenGL for Windows OpenGL100115glOpenGLOpenGL utility libraryGLU43gluOpenGLOpenGL auxiliarylibraryGLAUX31aux